Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	HRB (Harbin)
Model Series	623, 624, 625, 626, 627, 628, 629
Seal Type	ZZ (Metal) or 2RZ (Rubber)
Material	GCr15 Chrome Steel
Precision Grade	ABEC-1 (ISO P0)
Cage Material	Steel Stamped
Internal Clearance	Standard (C0)
Lubrication	Pre-greased
Country of Origin	China
Warranty	12 Months Manufacturer Warranty

5 reviews

Anonymous

Apr 19, 2026

Rating: 5/5

Perfect Replacement

Fit my electric motor perfectly. Replaced the noisy old ones and now it runs like new.

Anonymous

Apr 11, 2026

Rating: 5/5

Smooth for Robotics

Using these in robot arm joints. Very low friction and consistent quality across the batch.

Anonymous

Apr 03, 2026

Rating: 5/5

Authentic HRB Quality

Received genuine packaging with verification codes. The bearings run smoothly and quietly in my lathe.

Anonymous

Mar 14, 2026

Rating: 4/5

Good but shipping slow

Bearings are great quality as expected from HRB. Shipping took a bit longer than estimated.

Anonymous

Jan 27, 2026

Rating: 5/5

Industrial Grade

Bulk order for our workshop. Every unit checked out fine. Will order again for future projects.

5 FAQ

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

A: ZZ refers to metal shields on both sides, while 2RZ refers to rubber contact seals on both sides.

Q: Is this an official HRB store?

A: Yes, this is the official flagship store for HRB Bearings. All products are genuine.

Q: What is the maximum RPM for the 626 model?

A: Limiting speed varies by lubrication and load, but typically around 24,000 RPM for grease lubrication.

Q: Do you offer discounts for bulk orders?

A: Yes, please contact our customer service team directly for pricing on large quantity orders.

Q: Can I return if I ordered the wrong size?

A: Yes, returns are accepted within 30 days provided the items are unused and in original packaging.

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