Through-Bore Slip Ring for Grab & Dragline Applications | 120mm Bore · 8×10A + 2×CANbus

Product Overview

This through bore conductive slip ring is specifically engineered for heavy construction machinery such as grabs and dragline excavators. Its compact design – with a 120mm inner bore, 208mm outer diameter, and 80mm overall height – allows easy installation at the equipment’s slewing center and perfectly accommodates hydraulic or pneumatic drive shafts passing through. The unit provides 8 circuits of 10A power and 2 groups of CANbus signal, ensuring uninterrupted transmission of both electrical power and bus signals during continuous 360° rotation.

Key Specifications

Application Scenarios

Slewing center of grab cranes – installed between the upper structure and the lower chassis to eliminate cable twisting during 360° operation, ensuring stable power and control signal transmission.

Slewing platform of dragline excavators – mounted on the rotating section of heavy dragline equipment to meet the simultaneous demands of highcurrent power supply and CANbus control signal transmission, while withstanding harsh conditions such as dust and moisture.

Inside cable reels – used to conduct power and signals during reel rotation for cable payout and takeup, preventing cable damage from torsional stress.

Product Advantages

Large bore,  through hole design – 120mm inner diameter fits a wide range of construction machinery central drive shafts.

Power + signal hybrid transmission – 8 circuits of 10A highcurrent channels plus 2 CANbus signal channels satisfy both power and control requirements for grab/dragline equipment.

Compact and efficient – 208mm outer diameter and only 80mm height save valuable installation space.

Reliable and durable – precious metal contact technology ensures low contact resistance, minimal wear, and long service life.

Field proven – already validated in actual installations with grab and dragline industry customers, who have given positive feedback.

Why Choose Us?

We have long been dedicated to the field of conductive slip rings for construction machinery, with deep insight into the core requirements of grab and dragline equipment: large bore, high current, stable signals, and resilience in harsh environments. This product was developed precisely to address those pain points – from the 120mm through bore to the combination of 8×10A power and 2×CANbus signals, every specification is tailored to real world applications. The successful field validation and satisfaction of our customers are the strongest proof of our product’s quality and performance.