Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | Chrome Steel SAE 52100 |
| Seal Type | Open, ZZ, or 2RS Options |
| Precision Grade | ABEC-5 Standard |
| Cage Type | Steel Ribbon Cage |
| Lubrication | Pre-lubricated with Light Grease |
| Max Speed | Up to 30,000 RPM (Size Dependent) |
| Dynamic Load | Varies by Bore Size |
| Operating Temperature | -20°C to +120°C |
| Corrosion Resistance | Standard Carbon Steel |
| Pack Size | 10 Pieces per Order |
Anonymous
Mar 21, 2026
Rating: 5/5
Great for DIY Fidget Spinners
Exactly what I needed for a custom spinner build. The 5mm bore was spot on and the spin time is impressive.
Anonymous
Mar 07, 2026
Rating: 5/5
Precise Dimensions
Measured perfectly with my calipers. No issues with fitting them into tight tolerance housings for my mechanical model.
Anonymous
Feb 17, 2026
Rating: 5/5
Perfect for RC Drivetrain
Used these in my 1/10 scale buggy upgrade. They spin freely and fit the motor shaft perfectly. Noticed less friction immediately.
Anonymous
Feb 05, 2026
Rating: 4/5
Smooth but noisy at high speed
Good quality bearings for the price. They run smooth at low RPMs but get a bit noisy when pushed to max speed on my drill project.
Anonymous
Feb 01, 2026
Rating: 3/5
One bearing was stiff
Most were fine but one out of the pack felt stiff out of the box. The rest work well enough for my decorative application.
Q: Do you offer stainless steel versions?
A: Currently, this listing is for Chrome Steel only. We may stock stainless steel options in the future.
Q: Is bulk pricing available for 100+ units?
A: Yes, please contact our sales team directly through the store page for volume discount inquiries.
Q: Can I wash out the grease for oil lubrication?
A: Yes, you can clean the bearings with a solvent and re-lubricate with light oil for higher speeds, though grease lasts longer.
Q: What is the outer diameter for 5mm bore?
A: Please check the specific size chart in the product images. Standard 5mm bore bearings typically have a 16mm outer diameter.
Q: Are these suitable for 3D printer motors?
A: Yes, these are commonly used for NEMA motor shafts depending on the bore size selected. Please verify your motor shaft diameter.
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