Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Chrome Steel SAE 52100
Shield Type	Double Metal Shield (ZZ)
Precision Rating	ABEC-5
Lubrication	Pre-lubricated Grease
Cage Type	Steel Cage
Inner Diameter	2mm - 8mm (Model Dependent)
Outer Diameter	5mm - 12mm (Model Dependent)
Width	2.5mm - 4mm (Model Dependent)
Max Speed	Up to 30,000 RPM
Package Includes	10 Pieces Assorted Kit

5 reviews

Anonymous

Apr 04, 2026

Rating: 5/5

Great for RC Cars

Bought these for my 1/10 scale buggy. Smooth rotation and fit perfectly.

Anonymous

Mar 10, 2026

Rating: 5/5

Precision fit

Using for a robotics arm project. Tolerances are consistent across the kit.

Anonymous

Mar 07, 2026

Rating: 5/5

Fast shipping

Bearings arrived well packaged. No signs of rust or damage.

Anonymous

Feb 08, 2026

Rating: 4/5

Good assortment

Most bearings are excellent. One was slightly noisy but overall good value.

Anonymous

Feb 05, 2026

Rating: 5/5

Quiet operation

Replaced motor bearings on my drone. Noise level dropped significantly.

5 FAQ

Q: Can I wash these with solvent?

A: Yes, but you must re-lubricate them immediately after cleaning.

Q: What is the ID of MR52ZZ?

A: The inner diameter is 2.5mm for MR52ZZ.

Q: Do you sell bulk packs?

A: Please contact us directly for bulk ordering options.

Q: Are these stainless steel?

A: No, these are made of Chrome Steel for higher load capacity.

Q: What grease is used?

A: We use a standard lithium-based grease suitable for high speeds.

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