Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	HRB (Harbin)
Model Series	6902, 6903, 6904
Bearing Type	Deep Groove Ball Bearing
Seal Type	ZZ (Metal Shield) / 2RZ (Rubber Seal)
Material	Chrome Steel (GCr15)
Precision Grade	P0 (ABEC-1)
Cage Material	Steel Stamped
Lubrication	Pre-lubricated with Grease
Country of Origin	China
Warranty	12 Months Manufacturer Warranty

5 reviews

Anonymous

Apr 03, 2026

Rating: 4/5

Good but shipping slow

Product is fine and matches specifications. The 2RZ seals keep dust out effectively. Only giving 4 stars because shipping took a bit longer than expected.

Anonymous

Mar 15, 2026

Rating: 4/5

Standard size

Fits well into standard housing dimensions. Slight break-in period noticed but now running quietly. Good value for bulk purchases.

Anonymous

Feb 25, 2026

Rating: 5/5

Smooth rotation

Very quiet operation after installation. The grease inside seems high quality. No play or wobble detected. Highly recommend for industrial machinery.

Anonymous

Feb 21, 2026

Rating: 5/5

Authentic Product

Great bearings for the price. I used the 6903 ZZ model for a motor repair and it fits perfectly. Rotation is smooth and noise is minimal. Verified authentic packaging.

Anonymous

Jan 31, 2026

Rating: 5/5

Perfect for motors

Used on 6904 model for an electric fan motor. Very satisfied with the performance. HRB is a reliable brand and this official store delivers genuine items.

5 FAQ

Q: Can these handle high temperatures?

A: Standard grease is rated up to 120°C. For higher temperatures, please contact support for high-temperature variants.

Q: Are these bearings pre-lubricated?

A: Yes, all HRB deep groove ball bearings come pre-lubricated with standard grease suitable for general industrial applications.

Q: What is the difference between ZZ and 2RZ seals?

A: ZZ refers to metal shields on both sides, offering less friction. 2RZ refers to rubber contact seals, providing better protection against dust and moisture.

Q: Is this sold as a pair or single unit?

A: The price listed is for a single bearing unit. Please adjust the quantity if you need a pair.

Q: What is the bore size for the 6902 model?

A: The 6902 model has a bore diameter of 15mm, an outer diameter of 28mm, and a width of 7mm.

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