Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	ZCD / Jiuyuan
Model Series	623, 624, 625, 626, 627, 628, 629
Material	Chrome Steel GCr15
Seal Type	ZZ (Metal Shield) / DDU (Rubber Seal)
Precision Rating	ABEC-1 / ISO P0
Cage Material	Steel Cage
Lubrication	Pre-lubricated with Grease
Country of Origin	Imported (Japan Spec)
Package Quantity	10 Pieces per Pack
Warranty	6 Months Manufacturer Warranty

5 reviews

Anonymous

Apr 08, 2026

Rating: 5/5

Reliable supplier

This is my third order. Consistency is key for my machinery projects and these deliver every time.

Anonymous

Apr 06, 2026

Rating: 5/5

Excellent quality

Genuine feel and weight. The ZZ shields are secure. Highly recommend for hobbyist robotics.

Anonymous

Apr 04, 2026

Rating: 5/5

Perfect for drone motors

These bearings are smooth and handle high RPMs well. I used them on my racing drone and noticed less friction.

Anonymous

Apr 01, 2026

Rating: 5/5

Smooth operation

Very quiet operation compared to my old bearings. Shipping was fast and packaging protected the items well.

Anonymous

Mar 11, 2026

Rating: 4/5

Good value for money

Quality is decent for the price. One bearing was slightly tight out of the box but loosened up after use.

5 FAQ

Q: What is the maximum RPM for the 624 model?

A: It varies by load, but they are generally suitable for high-speed applications up to 30,000 RPM.

Q: Are these compatible with standard 626 mounts?

A: Yes, these bearings follow standard ISO dimensions for compatibility with standard mounts.

Q: Is the seal metal or rubber on the DDU version?

A: The DDU version features non-contact rubber seals for better dust and moisture protection.

Q: Do these come pre-lubricated?

A: Yes, all bearings come pre-lubricated with standard grease ready for installation.

Q: Can I mix sizes in one order?

A: Please select specific sizes per SKU, but you can order multiple SKUs in one checkout.

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