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Home / Bearings & Bushings / Imported Miniature Bearings R3/4/6/8/2-5/188ZZ: Inner Diameters 3.175, 6.35, 9.525, 12.7mm

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Brand MUH
Material Chrome Steel SAE 52100
Seal Type ZZ (Metal Shield)
Precision Class ABEC-7
Country of Origin Germany
Cage Type Steel Ribbon
Lubricant High-Speed Grease
Operating Temperature -20°C to 120°C
Noise Level Low Noise Design
Warranty 6 Months Manufacturer Warranty

5 reviews

A

Anonymous

Mar 09, 2026

Rating: 5/5

Smooth rotation and durable

I use these for small electric motors in my workshop. They run quietly and handle high RPMs without heating up too much. Will definitely order again.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Great value for imported bearings

Hard to find genuine imported miniature bearings at this price point. They work great for my RC car upgrades. No play or wobble detected.

A

Anonymous

Mar 03, 2026

Rating: 4/5

Good quality but shipping took time

The bearings themselves are excellent quality and match the specifications provided. Only reason for 4 stars is the shipping took a bit longer than expected.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect fit for my drone motors

These bearings are exactly what I needed for my custom drone build. The R6 size fit perfectly and the rotation is incredibly smooth. High quality German engineering shows.

A

Anonymous

Feb 15, 2026

Rating: 5/5

Reliable for CNC spindle maintenance

We used these for maintenance on a small CNC spindle. The precision is consistent across the batch we ordered. Very satisfied with the performance.

5 FAQ

Q: Is grease pre-applied or do I need to add lubricant?

A: These bearings come pre-lubricated with high-speed grease and are sealed with metal shields (ZZ), so no additional lubrication is needed.

Q: What is the exact bore size for the R6 model?

A: The R6 model has a bore size of 9.525 mm as listed in the product specifications.

Q: Do you sell these in bulk quantities?

A: Yes, we offer bulk pricing for orders over 50 units. Please contact our sales team directly for a quote.

Q: Is this suitable for high RPM applications?

A: Yes, these bearings are designed with high-speed grease and ABEC-7 precision, making them suitable for high RPM applications.

Q: Can I return the item if the size is wrong?

A: Yes, you can return unused items within 30 days of delivery for a full refund or exchange.

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