Anonymous
Apr 15, 2026
Rating: 3/5
Mixed Bag
Most were great, but one felt gritty upon initial spin.
Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | BJK |
| Material | Chrome Steel |
| Shield Type | Metal Shield (Z) |
| Precision Class | ABEC-7 |
| Country of Origin | Japan |
| Bore Size Range | 2mm - 9mm |
| Outer Diameter Range | 5mm - 19mm |
| Width Range | 2.5mm - 5mm |
| Lubrication | Pre-lubricated |
| Items per Pack | 10 Pieces |
Anonymous
Apr 15, 2026
Rating: 3/5
Mixed Bag
Most were great, but one felt gritty upon initial spin.
Anonymous
Mar 29, 2026
Rating: 5/5
High Quality
Genuine Japanese import feel. Very smooth rotation under load.
Anonymous
Mar 27, 2026
Rating: 5/5
Exact Fit
Replaced my old 688Z bearings perfectly. No modification needed.
Anonymous
Mar 15, 2026
Rating: 5/5
Smooth Operation
These bearings spin incredibly fast and fit perfectly in my RC car setup.
Anonymous
Feb 22, 2026
Rating: 4/5
Good Value
Quality is good but packaging was slightly loose during shipping.
Q: Can I use these in water applications?
A: Not recommended without additional sealing as they are not stainless.
Q: What does Z mean in the model number?
A: It indicates a single metal shield on one side of the bearing.
Q: Do you ship internationally?
A: Yes, we ship worldwide via standard courier services.
Q: Are these compatible with 688ZZ?
A: Dimensions match, but ZZ denotes double shields while Z is single shield.
Q: Are these rust proof?
A: They are made of chrome steel, not stainless steel, so avoid water exposure.