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China Electrically Insulated Bearings manufacturer

Views: 2     Author: Site Editor     Publish Time: 2021-06-18      Origin: Site

EASIER electrically insulated rolling bearings reliably prevent current discharge. Electrically insulated bearings use a special spraying process to spray high-quality coating on the outer surface of the bearing. The coating has a strong bond with the substrate and has good insulation performance. It can avoid the electric corrosion effect of the induced current on the bearing and prevent the current from affecting the grease and rolling elements. , The damage caused by the raceway can improve the service life of the bearing. The process has been continuously improved. for insulated bearings, a layer of 100μm thick coating is provided on the surface of the outer ring or inner ring, which can withstand a voltage of up to 1000 V DC. The special spraying process can form a layer of uniform thickness, strong and uniform coating, and then further processed to make it not affected by moisture and humidity.

EASIER provides bearings with oxide ceramic insulating layers on the bearing ring. Applied with plasma technology, the insulation has a guaranteed breakdown resistance of at least 1000V AC or DC. Two variants are available:


J20A *)




Disruptive Voltage


500 VDC


1 000 VDC


1 000 VDC


1 000 VDC






Coating Thickness

<100 μm

>200 μm

W200 μm

W200 μm


70…1 400 mm

70…1 400 mm

70…500 mm

70…340 mm


outside diameter

outside diameter

outside diameter

inner ring bore


Product range

electrically cylindrical roller bearings

VL0241 (insulated outer ring)

· Cylindrical roller bearings

-- Design variants: NJ, NU, NUP

-- Dimension series: 210-230, 310-330

-- Cages: brass and polyamide

-- Radial clearance groups: C0, C3, C4

insulated deep groove ball bearings


Deep groove ball bearings

-- Dimension series: 6212-6226; 6312-6326

-- Cages: brass

-- Radial clearance groups: C3, C4

Inner ring coated or outer ring coated are all acceptable, Outer ring coating are our regular design.

Other types (insulated inner ring) upon request

-- Tapered Roller Bearings

-- Spherical Roller Bearings

--  Angular Contact Ball Bearings

-- Thrust Roller Bearings

-- Thrust Ball Bearings

-- Self-aligning Ball Bearings

-- Linear Ball Bearings

Above mentioned or no mentioned types of bearings are all can produce electrically insulated bearings according to customers applications.


Insulated bearing for motor


· Higher operational reliability through optimum protection against electrical corrosion

· More economic than, for example, insulation on housings or shafts

· Interchangeable: Same key dimensions and technical properties as conventional bearings

· Coating resistant to damage if correctly handled

High-quality coating

A plasma spray technique is used to apply the aluminum oxide layer. Sophisticated

pre- and post- application processes result in an outstanding coating quality.

Protective sealant

EASIER bearings are treated with a unique sealant to guard against humidity penetrating the coating and reducing its effectiveness.

Optimized solutions

EASIER can supply values for relevant electric parameters for the bearings (capacitance,

impedance) to optimize the insulating solution for any application.

Typical applications

· Traction motors of railway vehicles

· Electric motors (AC/DC)

· Generators (e.g. in wind turbine generators)

Why choose us?

1. Electrically Insulated bearings have a very high cost. Years of production experience have enabled our bearing quality and insulation level to reach the international leading level. Our products can replace well-known brands in the market.

2. Our products can save you 40% of the purchase cost,

3. Timely delivery date can meet your promise to customers。

Contact us to let you know more.

E-mail: sales@xrbearing.com, brandbearings@gmail.com

Skype: brandbearings

Whatsapp/wechat: 0086-13280450757


TKW Focuses On the Development and Manufacturing of General and Non-Standard Rolling bearings

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 Yandian Industrial zone, Linqing City, Liaocheng,Shandong Province, China,
 +86-635-8509787 / +86-13280450757
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