Anonymous
Apr 16, 2026
Rating: 5/5
Excellent quality
Using these for a custom robotics build. Very satisfied with the precision.
Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Inner Diameter | 8 mm |
| Outer Diameter Options | 17, 18, 20, 25, 28, 30 mm |
| Material | Chrome Steel |
| Precision Grade | ABEC-7 |
| Seal Type | Double Sealed (ZZ) |
| Lubrication | Pre-greased |
| Cage Material | Steel |
| Included Resource | Printable Size Chart |
| Package Weight | 150 grams |
| Country of Origin | Imported |
Anonymous
Apr 16, 2026
Rating: 5/5
Excellent quality
Using these for a custom robotics build. Very satisfied with the precision.
Anonymous
Mar 28, 2026
Rating: 5/5
Perfect for my project
The sizes matched exactly what I needed. The chart helped me identify the replacement quickly.
Anonymous
Mar 05, 2026
Rating: 4/5
Good but tight fit
Bearings are smooth, but one size was a bit tight. Chart was useful though.
Anonymous
Feb 26, 2026
Rating: 5/5
Great variety
Good selection of non-standard outer diameters. Quality feels solid.
Anonymous
Feb 02, 2026
Rating: 5/5
Fast shipping
Arrived quickly and well packaged. The 8mm inner diameter is accurate.
Q: Are these suitable for high-speed applications?
A: They are rated ABEC-7, suitable for moderate to high speeds depending on load.
Q: Is the grease food safe?
A: The standard grease is industrial grade. Please contact us for food-grade options.
Q: Does this come with a physical chart?
A: Yes, a printed size identification chart is included in the package.
Q: What is the exact tolerance on the 8mm ID?
A: The inner diameter follows standard ISO tolerance for 8mm bearings.
Q: Can I buy just the 25mm outer diameter size?
A: This listing is for the assorted set. Single sizes may be available in other listings.