| Customization: | Available |
|---|---|
| Vibration: | Zv1 Zv2 Zv3 |
| Hardness: | HRC60--62 |
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UJK skateboard bearings are manufactured to industry-standard 608 dimensions, offering smooth rolling performance, high durability, and precision for skateboarders of all levels. Designed with premium steel or ceramic balls, UJK bearings provide excellent rotational efficiency and impact resistance for street, park, and longboard skating.
Most skateboard bearings follow the 608 series standard:
| Specification | Value |
|---|---|
| Inner Diameter (ID) | 8 mm |
| Outer Diameter (OD) | 22 mm |
| Width (W) | 7 mm |
| Standard Code | 608 |
| Material | Chrome steel / Stainless steel / Hybrid ceramic |
| Shield Type | ZZ (metal shield) / 2RS (rubber seal) / open |
| Lubrication | Grease or Speed oil (low-friction) |
| Model Name | Shield Type | Material | ABEC Rating | Feature |
|---|---|---|---|---|
| UJK 608-ZZ | Metal | Chrome steel | ABEC-5 | Durable and dust-resistant |
| UJK 608-2RS | Rubber | Chrome steel | ABEC-7 | Better seal, smooth rotation |
| UJK 608 Ceramic | Rubber | Hybrid Ceramic | ABEC-9 | High-speed, water-resistant |
| UJK 608 Open | None | Chrome steel | ABEC-5 | Clean and fast, for indoor use |
| UJK Pro Street 608RS | Rubber | High-carbon steel | ABEC-7 | Designed for park/street skaters |
All UJK bearings are available in packs of 8 pcs (1 set per skateboard), and optional spacers or speed rings are provided depending on the model.
UJK 608 series bearings are compatible with:
Skateboards (standard)
Longboards
Inline skates
Roller skates
Scooter wheels (with 8mm axles)
Spacers (8mm × 10mm)
Speed rings
Bearing lubricant oil (low-viscosity)
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