A
Anonymous
Apr 18, 2026
Rating: 5/5
Exactly as described
Matched my 635 specs perfectly. Will buy again for future projects.
Description
German Imported, Millions of Specifications, Complete Bearing Collection, 10x Penalty for Counterfeits
Reviews
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
A
Anonymous
Apr 17, 2026
Rating: 5/5
High speed confirmed
Runs cool under load. Definitely suitable for high RPM applications.
A
Anonymous
Apr 12, 2026
Rating: 5/5
Great value
Fast shipping and good quality. No wobble at high speeds.
A
Anonymous
Feb 13, 2026
Rating: 4/5
Good but tight fit
Quality is nice but needed slight adjustment during installation.
A
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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