Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Chrome Steel GCr15
Precision Class	ABEC-5
Seal Type	Metal Shield (ZZ)
Lubrication	High-Speed Grease
Cage Type	Steel Cage
Noise Level	Low Noise (Z1)
Hardness	HRC 60-65
Temperature Range	-30°C to +120°C
Package Quantity	10 Pieces per Pack
Compatible Models	RC Cars, Drones, Motors

5 reviews

Anonymous

Apr 18, 2026

Rating: 5/5

Exactly as described

Matched my 635 specs perfectly. Will buy again for future projects.

Anonymous

Apr 17, 2026

Rating: 5/5

High speed confirmed

Runs cool under load. Definitely suitable for high RPM applications.

Anonymous

Apr 12, 2026

Rating: 5/5

Great value

Fast shipping and good quality. No wobble at high speeds.

Anonymous

Feb 13, 2026

Rating: 4/5

Good but tight fit

Quality is nice but needed slight adjustment during installation.

Anonymous

Jan 29, 2026

Rating: 5/5

Perfect for my drone

Smooth operation and exactly the size I needed for my motor upgrade.

5 FAQ

Q: Is grease pre-applied?

A: Yes, high-speed grease is included.

Q: What is the max RPM?

A: Rated for up to 30,000 RPM depending on load.

Q: Do you sell single units?

A: We sell in packs of 10 for safety.

Q: Are these sealed or open?

A: They are metal shielded ZZ type.

Q: Will 633 fit a 3mm shaft?

A: Yes, 633 inner diameter is 3mm.

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