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NU 220 Bearing With E-XL-TVP2-J20A-C3 Suffix

242 Published by admin Jun 22,2026

Last week we received an email from the customer with the below bearing requirement:

Please send us the price and delivery time for below order.

Model: NU 220 bearing
Quantity: 5 pcs
Dimension: 100*180*34 mm
Working condition: light load rquired
Clearance: C3 clearance
Cage: Brass cage
Address:...,USA please include the shipping cost

It's a very clearly inquiry, the customer required a common model bearing.We have NU220M C3 bearing in stock can make fast delivery. Shipping to USA, we recommend DDP item. I made a PI include the shipping cost send to our customer directly.

NU 220 bearing manufacturer

Soon, I get the reply: Your price is very good. but please write the model number as NU220-E-XL-M1-J20A-C3.

NU220-E-XL-M1-J20A-C3？

NU 220 bearing: Single row cylindrical roller bearing, double ribs on outer ring, no ribs on inner ring; dimensions 100×180×34MM
E: Reinforced roller design for increased load capacity
XL: X-life long service life optimized series
M1: Machined two-piece solid brass cage, roller guided
J20A: Outer ring insulated coating, dielectric breakdown voltage 3kV DC, coating thickness 200μm, insulated suffix for motors to prevent bearing electric current erosion
C3: Large radial internal clearance, widely used for variable frequency motors

NU220M C3, NU220-E-XL-M1-J20A-C3 both NU 220 Bearing. but have a big difference.

Electrical Insulation Feature (Core Distinction)
NU220M C3: Non-insulated standard bearing, no insulating coating on outer ring. Vulnerable to electrical erosion caused by shaft currents when applied on variable-frequency motors.
NU220-E-XL-M1-J20A-C3: Outer ring coated with insulating layer marked J20A, featuring 3kV DC dielectric breakdown voltage and 200μm coating thickness. Specially designed to block shaft currents and protect bearing raceways & rollers from electric pitting.

Application of NU220-E-XL-M1-J20A-C3 Bearing

Main application scenarios

Variable frequency motors, high-voltage motors, large industrial fans, blower units, generator sets and other rotating equipment prone to shaft current damage.

Suitable operating environment

Medium-to-high rotating speed, continuous long-hour running, heavy radial load, variable frequency drive working condition, environment with obvious temperature rise.

So, the customer said they need NU 220 Bearing, but infact they need a electrical insulationNU220-E-XL-M1-J20A-C3。

I explain the suffix means and update a new PI to the customer again.

In the end, we won this order with professional service.