Category: NEWS

A slip ring, also known as a rotary electrical connector or rotary joint, is a crucial component in packaging machinery used for transmitting power, signals, and data, making it essential for the smooth operation of packaging equipment. Recently, JINPAT has developed a groundbreaking slip ring that can replace KUEBLER’s products in the field of packaging machinery, offering the following features and functionalities:

One of the primary functions of slip rings in packaging machinery is power transmission. They allow the transfer of electrical power from the stationary parts to the rotating components such as turntables and reels, ensuring the continuous operation of these rotating parts without being limited by cables. This seamless power transmission is vital for the efficient functioning of packaging machinery. JINPAT latest product, the SR085-30-06-04-12302-V100, similar to the hollow shaft slip ring 030 series,offers modular combination of ring circuits, with users being able to choose from 1 to 10 channels. Additionally, this slip ring employs a screw-type wiring method, eliminating the need for external wires, thus significantly reducing space constraints.

Packaging machinery typically requires the transmission of various control signals and data to ensure precise operation and monitoring. Slip rings play a crucial role in this regard by ensuring seamless communication between the rotating and stationary parts, facilitating precise control of the machinery. It is imperative to select highly reliable slip rings to ensure stable operation even under high-speed, high-load, and continuous running conditions. JINPAT SR085-30-06-04-12302-V100 slip ring features an aluminum alloy sandblasted housing, offering excellent wear resistance, high-temperature tolerance, and a long lifespan, ensuring the stability of packaging machinery.

Slip rings are indispensable components in packaging machinery, ensuring the smooth operation of the machines. Therefore,the design and selection of slip rings must be tailored to specific application requirements to meet the unique demands of different packaging machinery.Different packaging machinery typically requires different characteristics,such as varying outer diameters, conductive materials, channel numbers, and rated currents. As a professional slip ring manufacturer, JINPAT actively collaborate with customers to design and produce slip rings according to their specific needs, ensuring the efficient operation of their machinery.

Mechanical laser radar is a widely used sensor technology for distance measurement, 3D modeling, and environmental sensing. Their operation involves the emission and reception of laser beams,often requiring rotating components to scan the surrounding environment. To achieve continuous rotation and transmit power and data signals, mechanical laser radar typically relies on electric slip rings or optical fiber slip rings to support the transmission of power signals.

One notable feature of many laser radars on the market is that their operating wavelengths align with the optical signal bands that optical fiber slip rings can transmit. This makes solving the signal transmission problem for mechanical laser radar relatively straightforward. For instance, most optical fiber slip rings developed by JINPAT support operating wavelengths ranging from 650 nanometers to 1650 nanometers, with only a few models operating within the 850 nanometers to 1550 nanometers range. These bands cover almost all mainstream laser radar operating wavelength ranges.Additionally, JINPAT developed optical fiber slip rings possess excellentel ectrical characteristics and must be capable of transmitting high current and high-frequency signals to meet the power supply and data transmission requirements of laser radar.

For mechanical laser radar, the generated data volume is relatively small, and there is no need to transmit data over long distances. Since mechanical laser radar typically requires continuous operation for extended periods, slip rings must have high durability and stability to minimize maintenance needs. Therefore, using single-channel multi mode optical fiber slip rings can effectively address the issue of laser radar signal transmission. This approach has two distinct advantages: one is better alignment with the working wavelength range of laser radar, and the other is that optical fiber slip rings have an extremely long lifespan, capable of enduring hundreds of millions of rotations, fully meeting the long-termmaintenance-free requirements of laser radar.
Once the signal transmission issue is resolved through optical fiber slip rings, the electrical transmission problem becomes simpler. The mechanical design of the slip rings must align with the mechanical structure of the laser radar to ensure stability during installation and connection. A reasonable mechanical design helps reduce friction and wear,extending the lifespan of the slip rings. Using traditional electro-optical integrated slip rings may result in insufficient lifespan and could increase the volume of the laser radar, affecting its stability. In terms of rotary conductive solutions, as a specialized slip ring manufacturer, JINPAT provides wireless coil power supply solutions.

In conclusion, selecting the appropriate slip rings for mechanical laser radar depends on the specific requirements of the radar. Different models and manufacturers of laser radar may require different types of slip rings to ensure their performance and reliability.Therefore, the choice of slip rings should be made based on a comprehensive consideration of these factors. Feel free to consult JINPAT, and we will provide high-quality solutions.

Generally speaking, the slip ring industry refers to the high and low temperature impact environment of outdoor high-altitude areas, humid and hot tropical areas, high salt fog and corrosion in the ocean, and sudden cooling and heating in outer space as extreme environments. When manufacturing slip rings for equipment used in extreme environments, special measures must be taken to ensure that the service life and performance of slip rings can meet the requirements for long-term operation in harsh environments.

In addition to the harsh external conditions that objectively exist in extreme natural environments, there are also special scenarios in industrial production that require the use of slip rings with special functions. For example, in high-temperature rollers used in certain industries, slip rings with a temperature resistance of over 100 ℃ are required.

In response to the market demand for slip rings that can with stand high temperatures above 100 ℃, JINPAT has invested a lot of resources in product development. During the product development process, several sets of high-temperature motors were scrapped due to testing the lifespan of high-temperature slip rings alone. JINPAT’s efforts in the field of high-temperature resistant slip rings have led its research and development at the forefront of international slip ring manufacturers.

However, in some industrial applications,slip rings face external conditions that are far more than just high temperatures. JINPAT has developed an integrated slip ring that can withstand high temperatures of 200 ℃, operate in a 140MPa high-pressure 201 methyl silicone oil   environment, and has high-definition video transmission capabilities. Its model is LPC-0303-HD01, and the rated working voltage of the power ring is 400VAC,with a current of 3A, Its high-definition video signal is transmitted using the RG179 coaxial line. This type of slip ring can operate in high pressure and high temperature environments and transmit high-definition video signals. Due to the difficulty of development technology, it is difficult for ordinary slip ring manufacturers to manufacture this type of product, but JINPAT has successfully developed it. Moreover, after large-scale delivery and use, this type of electric vehicle has withstood the test of long-term operation in extreme environments. According to customer feedback, the performance of JINPAT special slip ring LPC-0303-HD01 is very stable, which is once again recognized and praised by customers for its excellent quality.

Carbon brush slip rings are a type of slip ring, characterized by high current carrying capacity, high lifespan, and strong maintainability. In the product line of JINPAT, the vast majority of high current slip rings with a single path current transmission capacity of 50A or more will adopt a carbon brush type structure, such as JINPAT LPA series slip rings. In addition to the LPA series slip ring products, JINPAT also has other slip rings with a carbon brush structure, such as many LPS series slip rings and hollow shaft slip rings.

Unlike the LPA high current series slip rings, the current of the LPS series slip rings and hollow shaft slip rings is slightly smaller, with LPS450-0320-02S being a typical product. The slip ring stator does not use the standard LPS series slip ring brush wire, but instead uses carbon brushes. Due to the integration of power and thermocouple signal channels, the carbon brushes used are also different. The signal ring part uses silver graphite carbon brush slip rings with a silver content of over 50%, and the copper graphite carbon brush has a copper content of over 90%. It can be seen that the functions of the two carbon brushes are different, with silver graphite mostly used for transmitting signals, while copper graphite is used for transmitting power. For example, the LPS11-16S separation structure slip ring, which has 16 pulse signal pathways, all of which use silver graphite carbon brushes.

From the two products of the LPS series slip ring mentioned above, it can be seen that using silver graphite carbon brushes to transmit thermocouple signals and pulse signals is feasible, while transmitting other relatively simple digital or analog signals is also feasible.JINPAT has developed various types of silver graphite carbon brush signal slip ring models.

In addition to the signal and power slip   rings of the LPS series, JINPAT also has some hollow shaft slip rings that use carbon brush deconstruction. In addition to models above 50A, there are also many smaller current models. JINPAT LPT020-0316-02S is a typical hollow shaft carbon brush small current slip ring, which also uses copper graphite and silver graphite carbon brushes to meet the transmission requirements of signal and power, respectively. Unlike the LPS slip rings, which cannot provide effective protection against harsh external environments, this product adopts a fully enclosed structure with an IP64 protection level. Its designed working speed is 500rpm and its designed service life reaches 100 million revolutions.The reason why carbon brush structure is chosen for low current slip rings is because these products have a longer lifespan and support a series of characteristics such as higher rotational speeds. As an old brand slip ring manufacturer, JINPAT has rich manufacturing experience. If you have a demand for this type of slip ring, you can contact us for customization.

High current slip rings are rotating connectors that possess significant features in the field of electrical power transmission. Their primary characteristic is their outstanding current   carrying capacity. In the high current slip rings by JINPAT, each channel can handle an astonishing maximum current transmission capability of up to 4000A.This feature makes high current slip rings highly favored in numerous high-power applications, such as electric motors, generators, and various industrial equipment.

To achieve the transmission of such high currents, high current slip rings typically employ a carbon brush friction system. However, due to the need for different specifications of carbon brushes for various current requirements, high current slip rings are often customized according to specific demands, with no standard products readily available. This personalized design ensures the reliability and efficiency of high current transmission, and

JINPAT can offer customers a variety of solutions.

The second significant characteristic is that high current slip rings usually have a larger physical size. This is due to the use of an open-air structure to ensure effective heat dissipation. For some high current slip rings with multiple channels and high-rated voltages,their dimensions can be quite substantial. For instance, the model LPA000-09800-01PE-3020-04L designed by JINPAT for offshore floating cranes can have a volume of up to 5 cubic meters. Similarly, high current slip rings required for podded electric propulsion systems can also be extremely large,with some products having irregular shapes, resulting in an external packaging volume that may exceed 11 cubic meters.

The third significant characteristic is that the components of high current slip rings are relatively large. Besides needing sufficient space to accommodate the components for high-voltage products, these components themselves are typically of substantial size. For example, in a recent high current slip ring developed by JINPAT for podded electric propulsion systems, which integrates three 4000A current channels, the copper rings used inside the slip ring are over ten centimeters in height and have a diameter exceeding one meter to handle such massive currents. Combined with the dimensions of other components, this type of slip ring can have an overall volume exceeding an unprecedented ten cubic meters.

In summary, high current slip rings have become indispensable components in high-power, high-current applications due to their exceptionally large current carrying capacity, the use of large-scale components, enormous physical size, and significant weight. These characteristics enable them to play a crucial role in a range of industrial and commercial applications, whether driving giant electric motors or supporting heavy-duty industrial equipment, high current slip rings provide reliable solutions for high current requirements.

 

Medical devices serve as important indicators of the level of medical science and technology, and SDI signal slip rings are widely used as crucial core components in the production of high-tech products such as medical instruments and medical equipment. Currently, slip rings have become indispensable components in many medical devices.

As a pioneer among international slip ring manufacturers, JINPAT possesses the capability for large-scale production of various categories of SDI signal slip rings, including HD-SDI, 3G-SDI, 6G-SDI,and 12G-SDI, as well as their integrated products. Equipment used in narrow-space detection, machine vision, and other fields typically integrates high-resolution optical sensing systems, and in most cases, the SDI high-definition video signals generated by these systems are transmitted through coaxial cables. When these optical systems are integrated onto joints capable of 360° rotation, there is a need to install a high-definition video signal integrated slip ring assembly to maintain the SDI signal path.

Devices such as surgical robots, high-speed intravascular ultrasound scanners, magnetic resonance imaging, ophthalmic examination, and treatment instruments are all vital equipment within the medical field. As various highly advanced surgical robots with complex functionalities are gradually developed, slip rings specific to this field will also see comprehensive development. SDI high-definition video signal slip rings, as important components on robotic arms, are present in the visual systems of these medical robots. Robotic arms can rotate freely in 360 degrees without restrictions while requiring continuous power supply, making it necessary to have a component that can rotate freely and continuously for 360 degrees to ensure their proper operation, and the SDI signal slip ring precisely meets this requirement. JINPAT possesses extensive experience in the development of multi-signal integrated slip rings, enabling the transmission of various special signals within compact slip rings. The slip rings developed by JINPAT for the medical industry are primarily small-sized products, with most of them falling into the category of 30 channels or fewer LPC capsule slip rings, LPM full series slip rings, and some LPMS slip rings.

For example, the LPMS-12U-HD01-08S is an extremely compact 3G-SDI signal integrated slip ring with an outer diameter of 6.5mm and a length of 17.4mm. This slip ring is likely the smallest 3G-SDI signal integrated slip ring available in the global market. Of course, if customers have specific requirements, JINPAT can also develop a smaller SDI signal slip ring based on the 5.5mm diameter LPMS-08D. However, in most cases,medical SDI signal slip rings are developed based on LPM or LPC, as many medical instruments do not require extremely compact slip rings, and the size of the slip ring is not a critical factor under normal circumstances.

JINPAT, as an established international manufacturer of slip rings, supports customization of over 30 types of signal-specific slip rings for telecommunications. Among all the slip ring signals, Ethernet signals are the most widely applied. This is due to their high data transfer rates, and integrating Ethernet signals into slip rings does not significantly increase costs. Additionally, the rapid development of electromechanical integration has led to the widespread adoption of Ethernet signals in slip rings, surpassing other types of digital signals.

 

Ethernet signals are transmitted through Ethernet cables, which are composed of multiple pairs of twisted wires. When incorporated into slip rings, they involve multiple copper rings connected to wires through twisted pairs to achieve Ethernet connectivity. In certain specialized fields where slip rings are used, specific Ethernet cables may be designated for transmitting Ethernet signals. For example, a layer of metal shielding can be added between the twisted wire pairs and the outer sheath ofthe cable. Next, we will explore how Ethernet signals are handled in slip rings used in different sectors.

 

Taking the integrated Ethernet signal slip rings developed by JINPAT for the monitoring industry as an example, the primary products belong to the capsule medium-sized LPC and micro-sized LPMseries, with the number of channels ranging between 18 and 24. In slip rings used for monitoring equipment, the most common integration is for Fast Ethernet(100 Mbps) signals. For convenient installation and connection, specialized standard rubber housings are often used as Ethernet connection terminals,eliminating the need for soldering an RJ45 connector or an industrial Ethernet connector. This design makes the monitoring slip rings easily recognizable,with twisted pairs and various colored power lines inserted within a white rubber housing.

 

In industrial applications, slip rings usually utilize Category 5 or Category 6 Ethernet cables to transmit Ethernet signals. In most cases, these cables are terminated with RJ45 male or female connectors. In certain specialized machinery, stronger industrial Ethernet cable assemblies with enhanced tensile strength might be employed. When using industrial Ethernet cable assemblies, the cable connectors at both ends of the slip ring can be RJ connectors or connectors specifically designed for industrial Ethernet. Both types of slip rings with integrated Ethernet are quite common,and JINPAT releases dozens of new models almost every month.

 

Moreover, in some other specialized fields,slip rings with Ethernet pathways are also connected to dedicated aviation plugs to achieve rapid and efficient plug-and-play functionality.

The 2023 Shenzhen International Medical

Equipment Exhibition is held from August 29th to 31st at the Shenzhen International Convention and Exhibition Center. This exhibition comprehensively serves the entire medical equipment industry, covering the entire medical industry chain from source to end-users. The showcased product range includes medical electronics, medical imaging equipment, medical instruments, and products for various departments within hospitals, creating a specialized platform for procurement, cooperation, and communication among hospitals,suppliers, and agents.

 

Within medical devices, many systems require rotation while simultaneously transmitting power and other signals, and slip rings are one of their crucial components. For instance, CT systems and blood cell analysis systems require reliable transmission of high-powercurrents, communication signals, and image digital signals. This places high demands on the complexity and difficulty of slip ring technology. JINPAT is the sole provider of slip ring solutions focused on rotational transmission for medical devices in this exhibition. As an internationally renowned manufacturer in the field of slip rings, JINPAT is invited to participate and showcased arange of high-end medical slip ring products. The first day of the exhibition attracted industry experts, visiting clients, and technical exchanges.

 

As a professional manufacturer of slip rings,JINPAT has built on its extensive technical development and experience to successfully overcome technical challenges. They have developed a series of high-reliability dedicated slip rings for the medical industry. The featured products include the LPKS series and LPC-76/125 series slip rings, suitable for surgical robots, supporting high-speed signal transmission, high durability,and stable signal transmission; the LPFO fiber optic series and LPC series tailored for medical endoscopic diagnostic instruments; the LPC, SR, and LPHFseries slip rings with strong structural compatibility and adaptable to different medical shadowless lamp system requirements; the LPC-06/12/18/24/36and LPM-24/30 series slip rings, compact in size and suitable for medical extracorporeal diagnostic instruments; the LPT012 series and LPM-08 series adapted to various types of ophthalmic testing instrument installation spaces;the LPMS-04/06/12 and LPC-06/12/18 slip rings with ultra-small dimensions,suitable for beauty and therapeutic healthcare instruments; the LPPL gas-liquid electric integrated series slip rings, LPC-06/12/18, LPKS-04/06/08 slip rings for medical tower bridges that support multiple signal transmissions

 

JINPAT is committed to providing customers with high-quality and reliable medical slip ring solutions. In the upcoming exhibition, JINPAT will unveil and recommend its latest products and solutions in the medical field, showcasing more integrated, creative, and highly professional solutions.

Among all types of slip rings, the carbon brush slip ring is a rather unique type. As a professional manufacturer that entered the field of slip rings relatively early on the international stage, JINPAT has a history of producing carbon brush slip rings for nearly 20 years.

JINPAT primarily focuses on the LPA high-current slip ring series for carbon brush slip rings. Compared to slip rings that use wire brushes, using carbon brush products allows for the transmission of extremely high single-channel currents. Currently, JINPAT has delivered carbon brush slip rings with a maximum single-channel current of up to 4000A.Due to the use of larger carbon brushes instead of wire brushes and copperrings in the friction pair, these slip rings have a very long lifespan. Exceptfor some carbon brush pulse signal slip rings used at extremely high speeds,the majority of the products are installed on large equipment with very low operating speeds, resulting in a significantly long service life that often exceeds 10 years. For many carbon brush slip rings, if the wear on the copperring permits, replacing the carbon brushes can extend the product’s lifespan by many years. In contrast, slip rings that use wire brushes must be completely replaced when the brushes wear down to a certain extent due to the overall structural design. This showcases the strong maintainability of carbon brush slip rings, which is also a significant characteristic.

To observe the friction situation of the carbon brushes and monitor the operating status of the slip rings in real time,carbon brush slip rings generally feature observation windows. JINPAT offers two common design solutions for observation windows. One involves adding a small opening with a transparent acrylic plate on the side plate, while the other uses a large acrylic plate to replace the steel plate. However, for carbon brush slip rings with higher protection or explosion-proof ratings, even though the side plate is removable, it’s generally not recommended to disassemble it to observe the internal situation due to the presence of special filling material between the side plate and the housing. This is to prevent structural damage that could lead to a reduction in explosion-proof or protection ratings.

As a pioneering enterprise in the field of slip ring manufacturing, JINPAT provides comprehensive after-sales policies for its products. Regarding carbon brush slip rings, JINPAT offers lifetime after-sales services. Between 2014 and 2015, JINPAT produced several dozen units of slip rings like the LPA000-03600-02100-2110 model. Currently, the earliest batch of these products is undergoing major repair at the factory. Within the agreed-upon timeframe, JINPAT will perform tasks such as carbon brush replacement, structural component strength inspection, and cosmetic repairs on these modified products. The products will be returned to the customers after all performance tests are completed.

As a trailblazer in the realm of slip ring manufacturing with international renown, JINPAT holds an undeniable leading position. JINPAT has pioneered the integration of high-definition video signals into VR slip rings.With the continuous refinement of related industries, manufacturers of high-endgaming equipment and VR devices with integrated VR capabilities are emerging.This trend indicates a growing demand for slip rings that integrate high-definition video signals for future VR devices and high-end gamingequipment.

Presently, slip rings integrating HDMI or DP signals are primarily applied in high-end VR devices and gaming equipment. On the other hand, SDI high-definition video signals find more use in equipment within the realm of film and television production. Worth mentioning is that JINPAT has successfully developed slip rings capable of accommodating 12G-SDI high-definition signals. Concerning DP and HDMI high-definition video signal slip rings developed for VR, they support both DP1.1 and HDMI2.0 versions of high-definition signals, with efforts underway to develop slip rings for even higher versions of high-definition signals.

Existing head-mounted virtual reality displays utilize a wiring approach directly connected to PCs, televisions, or other multimedia devices.During usage, limitations on rotation angles due to cable twisting and similar issues unavoidably compromise the experience. In order to ensure uninterrupted data transmission during 360° high-speed rotation and maintain data integrity and transmission speed, JINPAT has developed a range of integrated VR slip rings that combine HDMI, USB, direct current power, and signal amplification.The high-definition video transmission capability of these VR slip rings can reach up to 2160X1080P@90HZ, providing error-free signals. Furthermore, the design ensures no interference between high-definition and USB signals, thus guaranteeing lossless signal transmission. This solution empowers users to achieve unrestricted 360° rotation while using head-mounted virtual reality displays, significantly enhancing the user experience.

From the perspective of application terminals, SDI slip rings are primarily used for high-definition video signal transmission in productivity equipment, while slip rings integrating DP and HDMI signals are predominantly installed in various consumer-grade devices, thus falling under the category of consumer-grade high-definition slip rings. Whether employed in productivity equipment as SDI high-definition video signal slip rings or in consumer-gradedevices as DP and HDMI high-definition video signal slip rings, JINPAT consistently maintains a leading position in the industry. Customers are welcome to inquire about customized slip ring solutions, as JINPAT is committed to providing satisfactory solutions through its robust technical capabilities.

As a crucial component widely applied in industrial sectors, slip rings have a diverse range of applications, leading to substantial variations in technical specifications across different fields.Some equipment demands stringent control over the dynamic resistance fluctuation of slip rings, while others require high reliability in harsh environments. These specific product characteristics necessitate personalized customization. In the realm of high-speed electromechanical devices, high-speedslip rings have emerged as a pivotal subfield. JINPAT, an experienced slip ring manufacturer, has successfully developed two series of high-speed slip rings:the hollow shaft series and the capsule series.

Due to differences in structure, the rotational speed of hollow shaft high-speed slip rings is relatively lower.Moreover, due to their higher linear velocity, their operational lifespan is slightly shorter compared to capsule slip rings. This distinction is even more pronounced in the case of large-bore hollow shaft high-speed slip rings. In terms of annual production, the output of capsule high-speed slip rings slightly surpasses that of hollow shaft high-speed counterparts. Among hollow shaft high-speed slip rings, small-bore products have a higher annual production compared to large-bore products. From a dimensional perspective, the volume of small-bore high-speed hollow shaft slip rings is similar to that of capsule high-speed slip rings, and their functionalities are akin. However, differences in installation requirements across different end devices lead to variations in their external appearance and structure.

Compared to standard products, high-speed slip rings capable of reaching rotational speeds of up to ten thousand revolutions per minute exhibit significant differences in aspects such as precision in component machining, internal and external structural design, and more. They impose higher requirements on the smoothness of the copper ring surface, the ratio of friction pair brush pressure, and the surface machining precision of key structural components. Presently, JINPAT has achieved advanced technological capabilities in the field of large-bore high-speed hollow shaft slip rings. The company offers customized high-speed slip rings supporting amaximum bore diameter of 80mm and up to 20 channels, with a design rotational speed of up to 10,000rpm and an operational lifespan of no less than 50 million revolutions. These channels support a flexible combination of current magnitude and signal types. For instance, the hollow shaft high-speed slip ring model LPT080-0401-HS10000 boasts a maximum through-hole diameter of 80mm and can accommodate up to 20 channels. Its aluminum alloy and stainless steel casing ensure high reliability and a prolonged operational lifespan of no less than 50 million revolutions. Moreover, it features a wide aperture selection range,maintenance-free attributes, and a maximum rotational speed of 10,000rpm,making it suitable for environments ranging from -10°C to 60°C.

As a reputable slip ring manufacturer, JINPAT currently possesses the capacity for large-scale production of capsule high-speed slip rings with rotational speeds of up to 20,000 revolutions perminute. Additionally, capsule slip rings with a maximum rotational speed of30,000 revolutions per minute have also successfully passed JINPAT’ producttesting procedures, meeting design standards. Clients can customize the sliprings they require, with JINPAT’s engineering team offering dedicated services to fulfill these needs.

With an ongoing pursuit of energy efficiency, various types of vessels are increasingly adopting electric propulsion systems to reduce energy consumption. In line with this trend, the application of low-power podded electric propulsion systems as the primary propulsion system is growing. In these podded electric propulsion systems, slip rings are indispensable core components. As a renowned slip ring manufacturer, JINPAThas consistently achieved an industry-leading position in the research of slip rings for podded electric propulsion systems. The rise of electric propulsion technology has brought tremendous market opportunities to JINPAT.

Compared to small electrical equipment in other industries, even low-power podded electric propulsion systems used for inland waterway shipping typically start with power ratings in the hundreds of kilowatts. These propulsion systems are primarily suitable for small-tonnage core shipping vessels. To meet the needs of these inland waterway vessels, JINPAT has developed a specialized 200KW series of slip ring products. This series comprises two categories: an ultra-compact type represented by the product LPA000-06200-0618-44S-01A-05L and a standard carbon-brush integrated slip ring type represented by the product LPA000-06200-0618-44S-01A-06L. The main functional difference between these two products lies in the number of pneumatic and hydraulic channels.

Among them, LPA000-06200-0618-44S-01A-05L represents the ultra-compact high-protection slip ring for podded propulsion systems. Even without considering the height of the PG joint, the overall height of this product is merely 1117mm, with the stator body dimensions of 340mm x 320mm. Notably, this slip ring is not only compact in size but also achieves an IP65 protection rating. In contrast, the protection rating of LPA000-06200-0618-44S-01A-06L is IP54. Despite the lower protection rating of this slip ring, JINPA engineering design team, backed by their exceptional technical expertise, has successfully tackled this challenge and realized a comprehensive design that meets the requirements of compactness, multiple channels, high protection, and high-power transmission.

In addition to addressing slip rings for small-power podded propulsion systems, JINPAT has a wealth of product development experience in the field of slip rings for propulsion systems with power ratings below 5MW. Currently, JINPAT has successfully developed various models of slip rings with single-channel currents of 1000A, 2000A, and 4000A for customers, with rated voltages of 690V, 1000V, and 3300V, respectively.Similar to the 200KW-level slip rings, these slip rings also consist of pneumatic and hydraulic modules, ultra-high-power modules, and regular electrical signal modules. These three modules operate independently and are designed with a high degree of physical isolation to ensure that high currents during operation do not interfere with electrical signals.

In conclusion, JINPAT, as a professional slip ring manufacturer, possesses remarkable research and innovation capabilities in the field of slip rings for low-power podded electric propulsion systems. As electric propulsion technology continues to advance, the company offers high-quality, high-performance slip ring products, contributing to the more efficient and sustainable development of the maritime industry.

The concept of high-power carbon brush slip rings pertains to a specialized rotating connection device designed for transmitting high-power currents and signals. Widely utilized in equipment requiring substantial electrical energy or signal transmission, such as large-scale machinery, industrial robots, rotating stages, and various types of cranes, high-power carbon brush slip rings play a crucial role. Their unique feature lies in the use of carbon brushes as friction materials, ensuring stable operation even under conditions of high load and high rotation speed.

In the product range of JINPAT, products with a single path exceeding 50A are categorized as part of the high-power series, and they adopt a design based on carbon brush friction pairs. JINPAT engineers also determine the structure of slip rings based on variations in product installation environments and purposes.

This type of slip ring boasts an array of remarkable characteristics. Firstly, it possesses exceptional power transmission capability, reliably accommodating the transmission of high currents and powers, thus meeting the demands of large-scale equipment and high-load applications. Secondly, high-power carbon brush slip rings can maintain stable signal transmission while power is being transferred, ensuring the accuracy and reliability of data transmission and providing crucial support for the normal operation of equipment.

Typically, the most commonly used design for this type of high-power carbon brush slip ring is the open-frame design.The appearance of this type of carbon brush slip ring includes several types such as box-shaped, cylindrical, and other irregular shapes. Depending on requirements, it can also be designed with appropriately sized through holes.This type of product finds the most extensive application in equipment such as rotating stages, tower cranes, shore cranes, offshore cranes, heavy-duty winches, and all-electric thrusters. On the other hand, the use of traditional stacked designs for carbon brush slip rings is relatively less common. The main characteristic of these products is space efficiency, enabling them to be made very compact. Their appearance resembles that of a larger hollow shaft. At present, the most common application of this type of carbon brush slip ring is in the control centers of marine seismic exploration industry robots.

Moreover, as the core friction material of the slip ring, carbon brushes exhibit outstanding wear resistance. This implies that they can maintain stable performance over extended periods of use, thereby extending the operational lifespan of the slip ring. Addressing the demand for high-speed rotational motion, high-power carbon brush slip rings also display excellent adaptability. They can maintain stable power and signal transmission even during high-speed rotation, without affecting the overall performance of the equipment.

In terms of applications, high-power carbon brush slip rings find widespread use in various fields. Whether it is high-power power transmission for large-scale machinery or signal transmission during high-speed movement of industrial robots, this type of slip ring is up to the task. The smooth operation of rotating stages, precise control of cranes,and even multi-axis motion control in industrial automation all rely on the support of high-power carbon brush slip rings.

As a pioneer among international slip ring manufacturers, JINPAT has developed corresponding product cases for the various fields mentioned earlier. The characteristics of carbon brush slip rings used differ based on the application equipment or industry. For example, slip rings for cranes used on offshore oil drilling platforms possess not only powerful power transmission capabilities but also a high explosion-proof   design.This equips them to operate stably in the environment of oil and gas extraction. The high explosion-proof rating design also brings a higher level of protection to the slip rings, making it safe to say that high explosion-proof rating carbon brush slip rings coexist with high protection level carbon brush slip rings.

Radar slip rings play a crucial role in radar systems, serving as key components that guide the transmission and reception of radar signals, enabling target detection and localization. As a professional slip ring manufacturer, JINPAT’s  small aperture hollow shaft slip rings are widely used in military radar slip ring applications.

 

JINPAT’s small aperture radar slip rings are characterized by their compact size, small diameter, and volume, making them highly suitable for small rotating military equipment, where they are used for energy and signal transmission. In platforms like military vehicles and small to medium-sized aircraft, radar systems are typically limited in size,power, and transmission range, necessitating appropriately sized slip rings.For such radar systems, the required slip ring structures are relatively   simple, with small aperture through-hole slip rings being the primary choice.

 

Representing the excellence in small aperture radar slip ring products, JINPAT offers the LPT012/015/038/039 series slip rings. The LPT012A-0701-E2 and LPT015-0610-E3 are the smallest aperture products in this series, featuring simple integrated slip rings comprising multiple power rings and one Ethernet channel. These slip rings are commonly used in ship borne collision avoidance radar, airborne radar, vehicle navigation radar, short-range detection, and some small target indication radar scenarios.

 

The LPT038/039 series slip rings are similar to the LPT012/015 series in application platforms but offer slightly enhanced functionality. In addition to having more power rings than the previous series, they also support a greater variety of signal types, resulting in more signal rings. Representative models of these two aperture slip rings are the LPT038-1205-12S and LPT039-0605-16S-E2. The LPT038 adopts standard slip ring molds, providing a significant advantage in delivery speed.

 

Radar slip rings play a critical role in various application fields and continuously undergo improvement and optimization to meet diverse requirements in different scenarios. JINPAT is committed to developing various radar slip rings to cater to the needs of different industries while consistently enhancing product performance and reliability. JINPAT is dedicated to offering high-quality radar slip ring solutions and contributing to the advancement of radar technology.

In the previous section, we introduced several key technical performance indicators of slip rings, including static contact resistance and dynamic contact resistance. Now,let’s discuss friction torque, insulation strength between different loops of the slip rings, and their service life.

 

Apart from contact resistance, friction torque is also an important technical performance indicator of slip rings. Friction torque refers to the resistance generated between the brush and slip ring during rotation due to sliding friction. It is directly proportional to the brush pressure, which is the force exerted by the brush on the slip ring when they make contact. Friction torque is divided into startup friction torque and dynamic friction torque. Startup friction torque consists of static friction torque between the brush and slip ring and static friction torque within the bearing system. The greater the brush pressure, the larger the startup friction torque. The size of the dynamic friction torque varies with the rotation time; the longer the sliding contact between the brush and slip ring, the smaller the dynamic friction torque, resulting in more stable operation of the slip ring.

 

Before delivering carbon brush slip rings, JINPAT conducts a running-in process on the carbon brushes on the workbench to achieve the most stable operating state. After running for a period, the brush wires and slip ring grooves begin to wear, increasing the contact area. This leads to an increase in friction coefficient, dynamic friction torque, and contact resistance. However, for carbon brush slip rings using an open-frame structure, there is no such trouble, as the carbon powder drops to the bottom through gaps between components. When the carbon brush wears to a certain extent, replacement is necessary.

 

In addition, the insulation strength between the loops of the slip rings should also be given attention. Good insulation performance between each loop of the slip ring is essential to avoid issues like current short circuits, ensuring system safety and stability. Insulation strength refers to the insulation resistance between adjacent slip rings and between each slip ring and the housing under a certain voltage. It is typically measured using a 500V or 250V megohmmeter. The main factor affecting insulation strength is the insulation performance of the sealing gel. Currently, most precision slip rings use epoxy resin sealing gel,primarily composed of bisphenol A epoxy resin as the main agent, various an hydrides as curing agents, and added silicon micro-powder or Al2O3 alumina powder as fillers, along with toughening agents and accelerators. After high-temperature curing, the required insulation layer is obtained.

 

Lastly, the service life is another critical performance indicator of slip rings. Various factors affect the service life of slip rings, including rotational speed,brush pressure, material compatibility between the brush and slip ring, as well as processing and assembly techniques. Brush pressure is one of the key factors directly influencing the service life of slip rings. The higher the brush pressure, the greater the friction, leading to more severe brush wear and a decline in various performance indicators. When the wear reaches a certain level, signal transmission functionality may be lost. As a pioneer in the slip ring manufacturing industry, JINPAT has extensive experience in developing high-life slip rings.

 

To increase the service life of slip rings, JINPAT ‘s engineering team has long verified various structures and retained the most reliable and stable configurations through full-life cycle testing. For the frictional mating materials in high-life slip rings, it depends on the material of the brush wire and the material and thickness of the copper ring coating. With years of accumulation, JINPAT’s engineering design team also possesses rich experience in the composition of frictional mating materials for slip rings. Over the years, based on the data and experience gained from these tests, JINPAT has comprehensively optimized and improved the critical design, manufacturing process, and testing technology of its slip rings, achieving the goal of enhancing product quality.

Slip rings are precision and vulnerable components in electromechanical systems. The slip rings produced by JINPAT have been widely used worldwide. The quality and performance of slip rings are crucial for the normal operation of machinery, and their effectiveness is mainly determined by five major technical indicators.

 

This article will introduce several key technical performance indicators of slip rings, including static contact resistance, dynamic contact resistance, friction torque, insulation strength between the rings of the slip ring, and service life. JINPAT employs a mature control process to ensure excellent product performance when dealing with these indicators.

 

First, let’s understand the static contact resistance. Static contact resistance refers to the resistance between the samering brush wire (stator) and the wire lead (rotor) of the slip ring when it is not in operation. The level of this value directly affects the heat generated when current passes through the slip ring and the reliability of signal transmission. The magnitude of contact resistance depends on the materials of the slip ring and brushes, the contact form, and the pressure during contact.Increasing pressure can reduce contact resistance, but there is also a limit.Exceeding the limit can increase friction torque, leading to increased wear atthe contact area. If the contact resistance is too high, it may lead to increased contact voltage drop and even welding between the brushes and slipring, affecting signal transmission.

 

Secondly, dynamic contact resistance refers to the fluctuation value of contact resistance when the slip ring rotates continuously. It can also be expressed as electrical noise, which mainly affects the stability of signal transmission. The fluctuation in contact resistance is mainly influenced by the contact materials, the smoothness of component processing, the stability of contact pressure, the coaxiality of copper rings, and assembly process technology. During use, reasons for an increase in dynamic contact resistance may include poor contact between the brush and ring groove, virtual contact, insufficient pressure, or foreign objects on the ring groove surface. If the dynamic contact resistance is too high, it can cause significant fluctuations and noise in the signal current passing through the slip ring, and in severe cases, it may lead to signal interruptions or loss.

As a significant component of modern manufacturing, the demand for High Current slip rings in the shipbuilding industry is steadily increasing. Almost all modern vessels are equipped with navigation radars, making High Current slip rings indispensable components for marine navigation radars. Furthermore, some specialized ships are equipped with mechanical inertial navigation systems, which also incorporate High Current slip rings.

Typical application terminals for High Current slip rings are found in large engineering ships’ crane and hoisting equipment, as well as in special-purpose ships employing full-rotating electric propulsion systems. As a leading player in the international slip ring industry, JINPAT has developed hundreds of products for these two types of equipment, with most of them being high-voltage and High Current models. Some propulsion systems even utilize High Current slip rings with power ratings reaching several tens of megawatts. Taking the example of crane and hoisting equipment on engineering ships, whether it be specialized floating crane vessels for offshore operations, ships with deck cranes, wind turbine installation vessels, or hoisting equipment on offshore oil drilling platforms,JINPAT high-voltage and High Current slip rings have extensive applications.

Typically, smaller lifting weight shipboard cranes adopt single-function High Current slip rings that do not integrate weak signal modules or pneumatic and hydraulic modules. Among the slip rings produced by JINPAT for marine crane applications, this type is the most common,featuring a box-type structure where the stator and rotor are independently housed in a single enclosure. On the other hand, regular shipboard slip rings usually employ ordinary steel materials for the casing with relatively lower protection ratings.

However, for certain special equipment like crane slip rings used on oil drilling platforms, 304 stainless steel orhigher-grade steel materials are utilized, and the thickness of the plate is several times that of the casing used in regular crane slip rings, enabling the product to meet specific explosion-proof ratings. Therefore, slip rings with explosion-proof capabilities have higher protection ratings. A few shipboard High Current slip rings for marine crane applications may adopt a cylindrical integral structure, which facilitates achieving higher protection ratings.

As for propulsion system applications, JINPAT offers a variety of products, including regular single high-power modules and multi-module slip rings integrating High Current modules, pneumatic and hydraulic slip rings, and electrical signal slip rings. In specialized slip rings for propulsion systems, there is a category of products characterized by ultra-high operating voltages, usually exceeding 3300VAC, with tremendous power transmission capabilities, often exceeding one megawatt. JINPAT has successfully delivered multiple specialized slip rings with power transmission capacities of up to 7.5 megawatts and has the capability for research,development, and mass production of specialized slip rings with a maximum power of 15 megawatts.

The High Current Ethernet Slip Ring is a specialized slip ring device designed for transmitting both high currents and Ethernet signals. Unlike traditional Ethernet slip rings, the high current Ethernet slip ring is capable of simultaneously transmitting high currents and high-speed Ethernet signals, making it suitable for scenarios where large currents and data need to be transmitted in rotating or moving equipment.

 

In various industrial and technological applications, the need to transmit both high currents and Ethernet signals is quite common. For example, large machinery, industrial robots, automation equipment, stage lighting, and camera equipment often require high-power power supplies and real-time data and control signal transmission. In such cases, the high current Ethernet slip ring plays a crucial role, enabling devices to continuously and stably transmit currents and data during rotational movements.

 

The design of the high current Ethernet slip ring takes into consideration the high load requirements for current transmission. It typically incorporates high-power conductive materials and special structures to ensure the stability and reliability of current transmission. Additionally, it integrates Ethernet signal transmission channelsto ensure high-speed data transfer unaffected by rotational movements.

 

Recently, JINPAT developed a new high current Ethernet signal integrated slip ring, with the model number LPA000-04100-0820-0408-07E3. The power loop of this slip ring integrates 4channels of 100A, 8 channels of 20A, and 4 channels of 8A current pathways.Among them, the 4 channels of 100A use a carbon brush structure as a separate module. The remaining 12 channels of current pathways and Ethernet signal pathsare integrated within the hollow shaft slip ring, forming another module. This high current integrated slip ring accommodates up to 7 Ethernet signal pathsand uses aviation plug connections. Its development marks a significant advancement for JINPAT in the field of multi-channel Ethernet signal integration technology.

 

 

Besides this integrated slip ring, as an experienced slip ring manufacturer, JINPAT offers various products that integrate large current and Ethernet signal pathways. For example, the LPA000-03100-01PE-0220-1002-02E3-03E2-04S-01A represents a multi-module integrated large current slip ring, including 2 channels of Gigabit Ethernet and 3 channels of Fast Ethernet. Additionally, it features an extra gas-liquid module, although it only includes 1 gas pathway.

 

In summary, the High Current Ethernet Slip Ring is a powerful slip ring device that meets the demands of transmitting high currents and high-speed Ethernet signals. It provides an efficient and stable power and data transmission solution for rotating and moving equipment and systems.