Volsun VS-RD Shaft Grounding/Bearing Protection Ring for Marine Motors and Industrial Motors

Volsun’s VS-RD Shaft Grounding/Bearing Protection Ring is a simple, reliable part built to protect motors in marine and industrial settings. This ring fits around motor shafts to keep bearings safe from electrical damage and reduce wear. It helps stop stray currents that can cause pitting, noise, and early failure in bearings. By steering electricity away from the bearing and to a safe path, the VS-RD ring extends the life of the motor and lowers repair costs.

Made by Volsun, the VS-RD is designed for easy installation and steady performance. The ring slips onto the shaft and makes firm contact without the need for complex tools. Its materials resist salt water and oil, so it works well on boats, docks, and in factories where moisture and grime are common. The construction also resists corrosion, which keeps the electrical path clear and the part working longer.

This protection ring is useful for many kinds of motors, from small pumps to large drive units. In marine motors, it helps prevent the damage that can come from electrolysis and stray currents in hulls and seabeds. In industrial motors, it protects bearings from electrical discharge caused by variable frequency drives and other modern control systems. The VS-RD ring is a cost-effective way to reduce downtime and maintain steady operation.

Performance is steady and predictable. The ring provides a low-resistance path for electrical currents away from the bearing, while its contact points are made to stay clean and conductive. It works quietly and does not interfere with normal motor operation. Regular checks and simple cleaning keep the ring working well for a long time. For operators who want to avoid frequent bearing replacements, this ring is a practical choice.

Volsun focuses on building parts that are practical and built to last. The VS-RD Shaft Grounding/Bearing Protection Ring is compact and adaptable, fitting many shaft sizes and types with the right model. It is a small investment that often pays off by preventing costly failures and reducing maintenance needs. Whether used on a boat engine, a dockside winch, or a factory motor, the VS-RD ring helps keep equipment running smoothly.

The Volsun VS-RD Shaft Grounding/Bearing Protection Ring is a straightforward, effective solution for protecting motor bearings from electrical damage. It is easy to fit, resists harsh environments, and helps save time and money by preventing premature bearing failure. For those who maintain marine or industrial motors, this ring is a sensible addition to routine care and protection

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
A2: 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