Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | Chrome Steel GCr15 |
| Seal Type | ZZ (Metal Shield) / 2RS (Rubber Seal) |
| Precision Grade | ABEC-1 / ABEC-3 |
| Lubrication | Pre-greased |
| Cage Material | Steel |
| Noise Level | Z1 / Z2 Low Noise |
| Operating Temperature | -20°C to 120°C |
| Load Type | Radial Load |
| Origin | Imported |
| Common Applications | RC Motors, Drones, Appliances, Skateboards |
Anonymous
Mar 31, 2026
Rating: 5/5
Perfect Motor Fit
Ordered the 637 motor bearings. They fit my 540 motor exactly. Runs quietly and stays cool under load. Will buy again.
Anonymous
Mar 10, 2026
Rating: 5/5
Bulk Buy Winner
Stocking up for my workshop. The 639Z model is hard to find locally, so this imported set is a lifesaver. Quality matches domestic brands.
Anonymous
Feb 08, 2026
Rating: 5/5
Great for RC Car Upgrade
These bearings spin very smoothly. I used the 636 high-speed model for my RC motor and noticed less friction immediately. Good value for the price.
Anonymous
Feb 04, 2026
Rating: 3/5
Mixed Bag
Most of the bearings in the pack were great, but one 638 ball bearing felt a bit gritty out of the box. The rest work fine.
Anonymous
Jan 27, 2026
Rating: 4/5
Good value, minor packaging issue
The bearings themselves are high quality and fit perfectly. One package was slightly crushed during shipping, but the parts were intact.
Q: How long does shipping usually take?
A: Standard shipping typically takes 3 to 5 business days within the continental US. Expedited options are available at checkout.
Q: Are these pre-lubricated or do I need to add oil?
A: All bearings come pre-greased from the factory. You can use them immediately without additional lubrication.
Q: What is the difference between ZZ and 2RS seals?
A: ZZ refers to metal shields which offer less friction but less protection. 2RS refers to rubber seals which offer better protection against dust and water but slightly more friction.
Q: What is the maximum RPM for the 637 model?
A: The 637 motor bearing is designed for high-speed applications, typically handling up to 20,000 RPM depending on load and lubrication conditions.
Q: Will the 636 bearing fit a standard 540 brushed motor?
A: Yes, the 636 high-speed bearing is commonly compatible with standard 540 brushed motors. Please verify your specific motor shaft diameter before ordering.
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