Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand Name	JunChuang
Model Number	MR Series Miniature
Material	Chrome Steel (GCr15)
Bearing Type	Deep Groove Ball Bearing
Precision Rating	ABEC-1 / P0
Seal Options	Open, ZZ, 2RS
Inner Diameter Range	1mm - 9mm
Cage Material	Steel
Lubrication	Pre-lubricated with Grease
Package Content	10 Pieces per Pack

5 reviews

Anonymous

Apr 12, 2026

Rating: 5/5

Perfect for my drone

Works smoothly on my quadcopter arms. Very satisfied with the quality and spin time.

Anonymous

Apr 07, 2026

Rating: 3/5

Mixed bag

Most were fine but one bearing was noisy out of the pack. Rest work well.

Anonymous

Mar 06, 2026

Rating: 5/5

Excellent precision

Using these for a small robotics project. No wobble at all during operation.

Anonymous

Feb 18, 2026

Rating: 5/5

Great value

Can't beat the price for this quantity. Free shipping was a bonus.

Anonymous

Feb 15, 2026

Rating: 4/5

Good but tight fit

Quality is good but the 3mm ID was a bit tight for my shaft. Had to polish slightly.

5 FAQ

Q: Do you offer 2RS seals?

A: Yes, please select the seal type from the variation menu.

Q: What is the max RPM?

A: It varies by size, but generally suitable for high-speed motors.

Q: Can I buy single pieces?

A: We sell them in packs of 10 to ensure safe shipping.

Q: Is grease included?

A: Yes, all bearings come pre-lubricated from the factory.

Q: Are these stainless steel?

A: No, these are made of Chrome Steel GCr15 for durability.

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