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Home / Bearings & Bushings / Imported Miniature Bearings: RF, R-L-930, 1240, 1450, 1760, 1970, 2280, ZZ, HH, KK - High Speed

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Chrome Steel GCr15
Shield Type Double Metal Shield (ZZ)
Precision Class ABEC-7 / ISO Class 4
Series Type RF & R-L Series
Lubrication Pre-lubricated with Low Friction Grease
Cage Material Steel or Nylon
Operating Temperature -20°C to 120°C
Noise Level Low Noise (Z1 Group)
Country of Origin Imported
Package Quantity 10 Pieces per Pack

5 reviews

A

Anonymous

Apr 19, 2026

Rating: 3/5

Mixed bag

9 out of 10 worked great, one was noisy. Good enough for non-critical applications.

A

Anonymous

Apr 08, 2026

Rating: 5/5

Exact replacement

Matched the old 1240 specs perfectly. My small motor is running quietly again.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for my RC build

Used these on my quadcopter motors and they spin incredibly smooth. No vibration noticed at high throttle.

A

Anonymous

Mar 11, 2026

Rating: 5/5

High speed confirmed

Running at 30k RPM no issue. These are genuine miniature bearings and fit the 1760 spec perfectly.

A

Anonymous

Feb 16, 2026

Rating: 4/5

Good value

Works well for the price. One felt slightly tight out of the box but loosened up after a few minutes of run time.

5 FAQ

Q: Can I wash them with solvent?

A: We do not recommend washing them as it will remove the pre-applied lubrication. They are ready to use out of the package.

Q: Suitable for 3D printer fans?

A: Yes, these miniature bearings are commonly used in cooling fans and small motor applications found in 3D printers.

Q: Are these sealed or shielded?

A: These are ZZ shielded, meaning they have metal shields on both sides to keep debris out while maintaining low friction.

Q: Do you offer bulk discounts?

A: Yes, please contact our sales team directly for pricing on orders exceeding 50 packs.

Q: What is the inner diameter for model 1760?

A: Please refer to the specific dimension chart in the product description images for exact ID, OD, and width measurements.

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