Electrical Slip Ring Assemblies

Electrical Slip Ring Assemblies are key components used to achieve electrical signal and energy transmission in rotating equipment, widely used in electromechanical systems that require 360 ° continuous rotation. Its core function is to solve the problem of entanglement and breakage in traditional cable transmission during rotation, and to achieve stable energy and signal transmission between fixed and rotating structures through the sliding contact between electric brushes and conductive rings.

Key features and data support

Multi channel signal transmission and anti-interference design

Modern Slip Rings support parallel transmission of multiple signals with over 300 channels. Typical products such as the Deublin SRT series offer 36 to 54 independent channels, supporting 10A current (600V AC/DC) and 5A signal (30V DC) transmission, with a data rate of up to 100 Mbit/s. Its anti-interference design suppresses electromagnetic noise within ± 5% through shielding structure and impedance matching technology, ensuring signal integrity.

High protection level and environmental resistance performance

The slip ring is designed with a protection level of IP65 or above, and some products such as fiber optic Slip Rings can withstand extreme temperatures from -40 ℃ to+125 ℃, with a vibration tolerance of up to 20g (10-2000Hz). The sealing structure is combined with a special resin adhesive material and a metal shell to achieve dust, water, and chemical corrosion protection, suitable for harsh environments such as wind turbines and oil drilling platforms.

Low contact resistance and high reliability

The surface of the conductive ring is plated with gold or silver alloy, with a contact resistance as low as 5 m Ω. The single fiber brush technology controls the friction coefficient below 0.1, and the service life exceeds 200 million rotations. The precision bearing design ensures torque fluctuations of less than 0.01 N · m, ensuring low-noise operation (≤ 40 dB), with a typical MTBF (mean time between failures) exceeding 50000 hours.

Modularization and customization capabilities

The slip ring supports modular design with through-hole diameters ranging from 25mm to 50mm, and can integrate multiple media transmission such as power supply, light source, and fluid pressure source. For example, the electro-hydraulic combination slip ring can simultaneously transmit hydraulic oil (pressure of 10MPa) and 10A current, while the fiber optic slip ring can achieve 100km non-destructive data transmission, meeting complex application requirements such as robot joints and medical equipment.

Typical application scenarios

Wind power generation field

In megawatt level wind turbines, Slip Rings need to withstand a speed of 18000rpm and a low temperature environment of -30 ℃. By using precious metal single fiber brush technology, the stable transmission of power and control signals between the yaw system and pitch system is ensured, with a failure rate of less than 0.01 times per year.

medical equipment

The surgical robot adopts a micro slip ring (diameter ≤ 20mm), integrates encoder signals (accuracy ± 0.01 °), high-frequency RF energy (13.56MHz), and fiber optic image transmission, meeting the requirements of precision control and real-time feedback for minimally invasive surgery.

Industrial Automation

The rotating worktable in the automated production line uses high current slip rings (rated current 500A), combined with anti impact design, to maintain signal transmission stability even at 10g acceleration, supporting multi axis robot collaborative operation.

EADS

The helicopter rotor system adopts high-temperature resistant slip rings (-65 ℃ to+200 ℃) and is lightweight (weight ≤ 500g) achieved through silicon carbide ceramic matrix composite materials. It transmits flight control data and hydraulic power at high speed rotation (400Hz).

Security monitoring

The 360 ° rotating camera uses a waterproof slip ring (IP68), integrated Ethernet (1Gbps), PoE power supply, and thermal imaging signal, and can operate continuously for 10 years without failure in environments ranging from -20 ℃ to+60 ℃.