48-channel 2A electrical slip ring with aluminum alloy housing and 500rpm rotational speed for automation equipment and rotary worktables

The GK3899-48PS-GRA1045 is a 48-channel, 2A electrical slip ring manufactured by Shenzhen Guren Technology Co., Ltd. It features 48 independent electrical circuits, each with a rated current of 2A and an operating voltage range of 0–220V. The unit supports rotational speeds of up to 500 rpm, operates within an ambient temperature range of -30°C to +80°C, and carries an IP51 ingress protection rating.

High-Density 48-Channel Integration: Features 48 independent electrical circuits within a compact design, with each channel supporting a 2A current—ideal for systems requiring the transmission of signals and power for multiple sensors and actuators.
38.1mm Standard Through-Bore: The central aperture accommodates power cables, signal wires, pneumatic tubing, or drive shafts, simplifying routing at the rotating interface and enabling the integration of multiple media types.
Stable High-Speed ​​Operation (500 rpm): Capable of operating at speeds up to 500 rpm while maintaining a stable electrical connection, making it well-suited for high-throughput automated equipment.
Precious Metal Contacts with Ultra-Low Dynamic Resistance: Utilizes precious metal contact materials, with dynamic resistance fluctuations kept below 0.01Ω, ensuring stable, lossless transmission of both signals and power.
Dual-Side Lead Out with Clear Identification: Both the rotor and stator sides feature 48 AWG26 Teflon-insulated wires (500±20mm in length). These are organized into groups using four-color heat-shrink tubing and identified via a 12-color coding system, facilitating rapid identification and systematic management of all 48 channels.

1. A Centralized Connection Hub for High-Density Rotating Equipment
In automated production lines, multi-axis robots, and large-scale testing equipment, there is often a need to transmit dozens of sensor signals and power simultaneously. The GK3899-48PS-GRA1045 features an integrated design with 48 channels (rated at 2A each), replacing complex configurations that rely on stacking multiple smaller slip rings. This simplifies system architecture, reduces potential points of failure, and enhances overall reliability.

2. 38.1mm Standard Through-Bore for Greater Design Flexibility
The 38.1mm (1.5-inch) central through-bore—a standard dimension in industrial applications—allows for:
The routing of multiple power cables through the center.
The passage of pneumatic or hydraulic lines.
The integration of fiber optics and sensor wire harnesses.
The direct insertion of a main equipment shaft, enabling a "shaft-within-a-shaft" configuration.
This provides equipment designers with exceptional flexibility in routing and layout.

3. High-Speed ​​Operation (500 rpm) and Wide Temperature Range for Diverse Operating Conditions
With a high rotational speed capacity of 500 rpm, this unit meets the demands of high-throughput automated equipment. Its operating temperature range of -30°C to +80°C ensures reliable performance in environments ranging from frigid outdoor conditions and high-temperature workshops to settings with significant temperature fluctuations.

Multi-axis robots and robotic arms: Centralized transmission of multi-channel sensor signals and power for actuators at the joints.
Automated rotary worktables: Distribution of signals and power for multi-station indexing tables and rotary assembly platforms.
Test and measurement equipment: Multi-channel data acquisition and power delivery for rotary test benches.
Packaging and filling machinery: Transmission of multi-channel control signals for rotary filling heads and sealing machines.
Medical and laboratory instruments: Multi-channel signal connectivity for rotary scanning devices and diagnostic equipment.
Security and communication equipment: Transmission of multiple signals and power for rotating camera mounts (PTZ) and radar antennas.

Q1: Can all 48 channels, each rated at 2A, operate at full load simultaneously?
A: Yes. With all 48 channels operating at full load, the unit provides a total current of 96A, corresponding to a theoretical power transmission capacity of 21.1kW at 220V. In practical applications, ensure that the power supply capacity and heat dissipation conditions are sufficient.

Q2: What is the maximum outer diameter of a cable or conduit that can pass through the Φ38.1mm through-bore?
A: The 38.1mm inner diameter can accommodate:
Multiple cables with an outer diameter ≤30mm (e.g., one 25mm² cable plus several control wires)
Multiple pneumatic or hydraulic hoses with an outer diameter ≤10mm (e.g., 4–6 hoses)
Various optical fibers and sensor wire harnesses
A mechanical shaft with a maximum outer diameter of 35mm (rotational speed and balance must be taken into account)