Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	NSK
Product Type	Deep Groove Ball Bearing
Model Series	6900, 6901, 6902, 6903, 6904, 6905
Seal Options	Z, ZZ, DU, DDU, V, VV
Material	High Carbon Chrome Steel (GCr15)
Precision Class	P0 (ABEC-1)
Cage Material	Pressed Steel
Lubrication	Grease Sealed (for sealed types)
Origin	Japan / Authorized Manufacturing Plant
Warranty	12 Months Manufacturer Warranty

5 reviews

Anonymous

Apr 12, 2026

Rating: 5/5

Reliable Supplier

Ordered bulk for our workshop. All units tested within tolerance. Will order again for future projects.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect Fit

Replaced old noisy bearings with these 6904DU. Noise is gone and rotation is smooth. Highly recommend this store.

Anonymous

Mar 03, 2026

Rating: 4/5

Good Value

Product is authentic. Only giving 4 stars because the box was slightly dented during shipping, but the bearings inside were fine.

Anonymous

Feb 27, 2026

Rating: 5/5

Genuine Quality

Received the 6903ZZ bearings. Packaging was original NSK and seals look perfect. Running smoothly in my motor.

Anonymous

Feb 21, 2026

Rating: 5/5

Fast Delivery

SF Express was incredibly fast. Bearings fit my 3D printer upgrade kit perfectly. Very satisfied.

5 FAQ

Q: Are these 100% authentic NSK bearings?

A: Yes, all products are sourced directly from NSK official channels.

Q: Do these come pre-lubricated?

A: Yes, sealed models come with standard grease. Open models require manual lubrication.

Q: What is the difference between ZZ and DDU seals?

A: ZZ represents metal shields on both sides, while DDU indicates rubber contact seals on both sides.

Q: Can I return opened packages if the size is wrong?

A: Unopened packages can be returned within 7 days. Opened industrial parts may have restrictions.

Q: Is there a discount for purchasing over 50 units?

A: Please contact customer service for bulk pricing options on large orders.

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