Volsun VS-RD Shaft Grounding Rings Protect Your Motors and Bearings

Volsun’s VS-RD Shaft Grounding Rings protect your motors and bearings by providing a reliable, easy-to-install solution that prevents electrical damage and extends equipment life. Designed for use on rotating equipment in industrial, commercial, and HVAC applications, these grounding rings channel stray currents safely away from motor shafts and bearings, stopping electrical pitting, fluting, and premature wear.

Constructed from durable conductive materials, the Volsun VS-RD consists of a split ring that slips over the motor shaft and a low-resistance contact brush that maintains continuous electrical contact as the shaft turns. The design is compact and unobtrusive, fitting into tight spaces without interfering with seals or other components. Corrosion-resistant parts and robust construction mean the ring performs reliably in a wide range of environments, from clean rooms to dusty or humid industrial plants.

Installation is straightforward and requires minimal downtime. The split design allows the ring to be installed without dismantling the motor or removing the shaft, and common mounting options make it compatible with many motor types. Once fitted, wiring the ring to ground is quick, ensuring immediate protection against damaging shaft currents. Clear instructions and simple hardware reduce installation errors and save maintenance time.

Performance is the priority with the Volsun VS-RD. By providing a low-impedance path to ground, the grounding ring prevents electrical discharge through bearings, which significantly reduces bearing failure rates and bearing-related maintenance costs. Users can expect smoother operation, quieter motors, and longer bearing life. This reliable protection also helps avoid costly unplanned shutdowns and preserves motor efficiency.

Volsun’s VS-RD Shaft Grounding Rings are versatile. They suit motors, generators, gearboxes, and other rotating equipment where shaft currents are a concern. Sizes and configurations cover a broad range of shaft diameters and speed ratings, making it easy to find the right fit for specific equipment. Replacement brushes and service kits are available to support long-term maintenance and ensure lasting performance.

Safety and compliance are built into the product. The Volsun VS-RD meets industry expectations for grounding devices and is manufactured under quality controls that ensure consistent performance. For facilities seeking to improve equipment reliability and reduce downtime, the Volsun VS-RD Shaft Grounding Ring is a practical investment that protects both motors and bearings.

Choose Volsun’s VS-RD Shaft Grounding Rings for a dependable, low-maintenance solution that keeps shafts grounded, bearings protected, and operations running smoothly

Product Overview

Volsun VS-RD Series Shaft Grounding Rings

Description
VS-RD series shaft grounding rings are composed of conductive fibers and metal bodies and are used for electric corrosion protection of variable frequency motors and their coupling equipment. VS-RD series conductive rings can reduce the potential induction between the bearing and the grounded chassis, effectively solve the phenomenon of electrical corrosion caused by shaft current, and protect the bearing from damage

Features

* Low resistance

* High temperature resistance

* Durable and wear-resistant

* Unique structure

* Environmentally friendly and non-toxic

* Size can be customized

Support customization, ODM & OEM available

Click to contact us for free samples！

VR

PRODUCT SPECIFICATIONS

Item	Test Data	Test Standard
Static resistance	＜1Ω	/
Dynamic resistance	≤10Ω	/
Fiber pull-off force	≥100·30s	/
Salt spray test	No fiber damage	/
Durability test	A3	/
High temperature test	≥120h	/
Low temperature test	≥15times	/

Structure

Dimensions

OD - mm	ID - mm	Height - mm	Applicable shaft diameter - mm
30	15	7	10
38	19	7	13
38	22	7	18
40	24	7	18
47	31	7	25
49	32	7	26
50	30	7	24
50	31	7	25
53	30	7	25
53	36	7	30
55	39	7	35
57	36	7	30
60	44	7	38
62	41	7	35
70	46	7	40
72	49	7	43
75	58	7	52
78	58	7	52

Note：Special size and packing are available as request

Application Pictures

Company Show

Suzhou Volsun Electronics Technology Co., Ltd. was founded in 2006. We keep focusing on the R&D, production and sales in insulation, sealing & protection solutions

Volsun has a modern quality management system, which has passed a series of quality system certification such as IATF16949, ISO9001 etc

Up to now, Volsun cooperated with customers from 88 countries, we offer suitable sealing, waterproof solutions for some well-know enterprises in communication, Automobile, Power industry etc

Certifications

Abroad Exhibition

Las Vagas AAPEX

Moscow Expo

Hannover Messe

Packaging and Shipping

FAQ

Q 1. How long is the payment term
A: We accept T/T 50% deposit and 50% balance against B/L or L/C copy at sight, also accept Western Union, VISA and Paypal

Q 2. What is the normal lead time for product orders
A: The average lead time for prototype/first piece is 7~10 days, if tooling is involved, the lead time for production tooling is 10 days, and the average production time after sample approval is 2-3 weeks

Q 3. What is your standard packaging
A: All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed

Q 4. Can you tell us the monthly production capacity of your products
A: It depends on the model, we produce more than 1500 tons of rubber materials per month

Q 5. What kind of certificates do you have
A1: We have ISO9001:2015, IATF16949:2016, ISO14001:2015, ISO45001:2018 certified
A2: We have various rubber compounds approved by UL, ROHS and REACH

Q6: How to check the quality of bulk order
A1: We provide pre-production samples to all customers before mass production if needed
A3: We accept third-party inspection, such as SGS, TUV, INTERTEK, BV, etc

Q 7: Can you provide customized service
A: Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements