Volsun Patented Shaft Grounding Rings For Various Electric Motor Bearings Protection



Description

Volsun shaft grounding rings/conductive brushes are primarily composed of conductive fibers and a metal body, offering lightweight, low resistance, and physically stable current transmission. Their cantilevered design allows the brush tip to conform to the shaft surface, resulting in high conductivity and wear resistance, as well as low friction and noise during operation.
 
Volsun's shaft grounding ring products are currently divided into three main categories based on application scenarios and testing requirements:
 
The first is the RD/RDW/ST/STW series of shaft grounding rings, available in full, semi-circular, and fan-shaped configurations. They are suitable for new energy vehicle motors, rail transit, and industrial motors, supporting various mounting methods such as bolts and press-fit.
 
The second is the TDB series of conductive brushes, primarily for wind turbine motors, industrial motors, and rail traction motors, primarily using bolts for mounting.
 
The third is the TF series of test accessories, includes test rings, test pens, and conductive holders, fully supporting various shaft electrical testing needs.





Unique Features


* Low resistance
* High temperature resistance
* Durable and wear-resistant
* Unique structure
* Environmentally friendly and non-toxic
* Size can be customized


Technical Performance

Item	Typical Data
Static resistance	＜1Ω
Dynamic resistance	≤10Ω
Fiber pull-off force	≥100·30s
Salt spray test	No fiber damage
Durability test	/
High temperature test	/
Low temperature test	/

Structure



Dimensionis

O.D (mm)	Height (mm)	Applicable shaft diameter (mm)
30	≥7	10
32	≥7	15
38	≥7	18
40	≥7	18
47	≥7	25
48	≥7	26
50	≥7	22
50	≥7	25
53	≥7	25
53	≥7	30
55	≥7	35
57	≥7	30
60	≥7	38
62	≥7	35
70	≥7	40
86	≥7.5	58
102	≥7.5	70
128	≥7.5	79.5

Note: The other sizes & packing are avalable on request.

Applications 

• CONTACT TEL: +86-512-66386808
• SALES CONTACT: volsun2006@szvolsun.com