Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	High-Carbon Chrome Steel GCr15
Seal Type	ZZ (Metal Shield) or 2RS (Rubber Seal)
Precision Grade	ABEC-5 / P5 Standard
Compatibility	NSK, NBK, and Equivalent Miniature Models
Package Quantity	10 Pieces per Pack
Inner Diameter Range	2mm to 12mm (Varies by Model)
Outer Diameter Range	5mm to 28mm (Varies by Model)
Width Range	2.5mm to 8mm (Varies by Model)
Lubrication	Pre-lubricated with Standard Grease
Country of Origin	Imported (Japan Industrial Standards)

5 reviews

Anonymous

Mar 27, 2026

Rating: 3/5

Check your dimensions

They work, but make sure you measure twice. I thought I needed MR85 but needed MR84. Product is fine, my fault though.

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for my FPV build

These bearings fit perfectly in my motor mounts. Smooth rotation and no noticeable play. Great value compared to genuine NSK.

Anonymous

Mar 05, 2026

Rating: 4/5

Good quality, minor inconsistency

Most of them are silent and smooth. One bearing in the pack had a slight grind but still usable for low RPM applications.

Anonymous

Feb 03, 2026

Rating: 5/5

Fast shipping and well packaged

Arrived quickly. No rust or damage. Using them in a 3D printer extruder upgrade and they work flawlessly.

Anonymous

Jan 26, 2026

Rating: 5/5

Bulk buy success

Ordered multiple packs for our school robotics team. Consistent sizing across all batches and durable under load.

5 FAQ

Q: Is there a warranty if a bearing is defective?

A: We offer a 30-day return policy for defective items or sizing errors. Please contact us for assistance.

Q: What is the tolerance on the inner diameter?

A: The tolerance follows standard ISO metrics for miniature bearings, typically within microns for ABEC-5 grade.

Q: Do these fit Tamiya gearboxes?

A: Yes, the MR series is commonly used in Tamiya and similar hobby gearboxes. Please check your specific model number.

Q: Can I use these for high-speed applications?

A: They are rated for moderate speeds. For extremely high RPM, please consult the specific technical specs for the model.

Q: Are these bearings pre-lubricated?

A: Yes, they come with standard grease lubrication suitable for general use upon arrival.

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