Electrical Capsule Slip Rings

Electrical Capsule Slip Rings are highly integrated rotary transmission devices designed for scenarios with limited space, high-speed rotation, and high reliability requirements. Its core structure adopts a compact capsule shell, which encapsulates conductive rings, brushes, bearings, and signal transmission components in a cylindrical space with a diameter of 10mm to 50mm. Through sliding contact, it achieves 360 ° continuous transmission of power, signals (such as Ethernet, CAN bus, USB), and fluids (such as hydraulic oil and gas).

Key features and data support

Ultra compact design and high power density

Volume and weight: Typical products such as the Moog G10 series have a diameter of only 12.7mm, a length of 38mm, and a weight of less than 20g, reducing the volume of traditional Slip Rings by 70%.

Power density: Single channel supports 10A current (600V AC/DC), with a power density of 1.2W/cm ³, suitable for scenarios such as micro robot joints and drone motors.

High speed rotation and low torque

Speed capability: Using air bearings or magnetic levitation technology, the speed can reach 10000rpm (such as Schleifring SSI series), and the contact pressure fluctuation under centrifugal force is ≤ 5%.

Torque characteristics: The starting torque is as low as 0.01N · m, and the operating torque is ≤ 0.05N · m, significantly reducing the energy consumption of the drive motor.

Signal transmission performance

Data rate: Supports 10Gbps Ethernet (such as Morgan AMC series), with a crosstalk suppression ratio of ≥ 60dB and an error rate of<10 ⁻¹ ².

Analog signal: resolution up to 24 bits, linearity ± 0.05%, meeting the high-precision requirements of industrial sensors.

Environmental adaptability and reliability

Protection level: IP68 protection, can work under 10 bar water pressure, salt spray test ≥ 96 hours (MIL-STD-810G standard).

Lifetime and MTBF: The thickness of the gold plating layer on the conductive ring is ≥ 2 μ m, and the lifetime exceeds 200 million revolutions per minute, MTBF>50, 000 hours (25 ℃/50% RH environment).

Modularization and Customization

Channel Expansion: Standard modules support 4 to 24 channels, and a single module can integrate power (10A), signal (1Gbps), and fluid (0.5MPa) transmission.

Material selection: The conductive ring can be made of beryllium bronze or silver alloy, and the electric brush can be made of silver graphite or gold nickel alloy, suitable for a temperature range of -40 ℃ to+125 ℃.

Typical application scenarios

medical equipment

Surgical robot: Capsule Slip Ring integrated into minimally invasive surgical instrument joints, transmitting high-definition endoscopic images（ 4K@60fps ）And the energy of the electric knife (100W), with a diameter<15mm, meets ergonomic requirements.

CT scanner: The rotating frame adopts magnetic levitation Slip Rings with a speed of 0.5rpm, transmitting 128 layers of detector data (bandwidth 10Gbps) to reduce image artifacts.

EADS

Drone: Micro slip ring (diameter 10mm) integrated into the motor shaft, transmitting 10A current and flight control signals, with anti vibration up to 20g (10-2000Hz), meeting military standards.

Satellite antenna: The high vacuum environment slip ring adopts ceramic bearings with a lifespan of over 10 years, transmitting Ku band signals (bandwidth of 500MHz) with a loss of ≤ 0.5dB.

Industrial Automation

Collaborative robot: Integrated slip rings at the joints, transmitting 24V power and EtherCAT signals (100Mbps), with a rotation life of over 50 million times, meeting the safety standards for human-machine collaboration.

3D printing: The slip ring transmits laser power (1000W) and temperature sensor signals (accuracy ± 0.1 ℃) at a speed of 5rpm to improve printing accuracy.

energy sector

Wind turbine: The yaw system adopts high-speed slip rings (with a speed of 200rpm) to transmit 690V three-phase electricity and fiber optic signals, with a protection level of IP66 and resistance to salt spray corrosion.

Tidal energy: Underwater rotary joint integrated slip ring, transmitting 10kV high-voltage electricity and SCADA data, with a depth of up to 100 meters and a pressure resistance of 10MPa.

Security monitoring

PTZ camera: 360 ° rotating sliding ring transmission 1080P video (bandwidth 50Mbps) and PTZ control signal, protection level IP68, suitable for environments ranging from -30 ℃ to+60 ℃.

Perimeter radar: slip ring integrated microwave antenna rotating mechanism, transmitting X-band signals (bandwidth 1GHz), speed 30rpm, detection distance 5km.

Technological development trends

Material innovation: Using liquid metal (such as gallium indium alloy) instead of traditional electric brushes, the contact resistance is reduced to 0.1m Ω, and the lifespan is extended by 5 times.

Wireless Assistance: Combined with Wi Fi 6E or UWB technology, achieve slip ring redundant transmission and increase data rates to 10Gbps+.

Intelligent monitoring: built-in temperature and vibration sensors can predict faults through edge computing, reducing maintenance costs by 40%.

Extreme environment: Developing superconducting slip rings to achieve lossless transmission at liquid nitrogen temperature (-196 ℃), applied in fields such as quantum computing and particle accelerators.