Koyo 608ZZ deep groove ball bearings deliver reliable performance for skateboards and fingerboards. Featuring dual metal shields (ZZ) for dust protection, these bearings are made of chrome steel for enhanced durability and smooth rotation under radial loads. Compatible with 608, 608Z, and 608ZZ standards.
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The Koyo 608, 608Z, and 608ZZ deep groove ball bearings are precision-engineered components designed for high-speed rotational applications in skateboards, fingerboards, and small machinery. Key specifications:
| Model | Inner Diameter | Outer Diameter | Width | Seal Type | Max Speed (RPM) |
|---|---|---|---|---|---|
| 608 | 8mm | 22mm | 7mm | Open | 19,000 |
| 608Z | 8mm | 22mm | 7mm | Single Shield | 18,000 |
| 608ZZ | 8mm | 22mm | 7mm | Double Shield | 17,000 |
The 608Z model features a single metal shield for dust protection, while 608ZZ provides dual shielding for maximum contamination resistance. Open-type 608 bearings enable easier maintenance but require frequent lubrication.
Skateboard users prioritize ABEC-5 to ABEC-7 tolerance levels (0.004mm~0.012mm runout) for vibration reduction during high-speed descents.
Professional riders require bearings with ≤0.001" radial clearance and chrome steel construction to withstand impact loads from 10ft+ aerial maneuvers.
Packaging line rollers using 608ZZ bearings demonstrate 8,000+ hour service life in ISO Class 7 clean environments when maintained with NSF H1 lubricants.
| Factor | Skateboard Use | Industrial Use |
|---|---|---|
| Material | GCR15 Steel (HRC 60-64) | Stainless Steel AISI 440C |
| Seal Type | Open/Shielded (Easy cleaning) | Double Sealed (IP54) |
Challenge: Reduce bearing replacement frequency from 3 months to 6+ months for rental skateboards.
Solution: Implemented Koyo 608ZZ with ceramic hybrid balls
Result: 83% reduction in maintenance costs with 9-month average service life
Challenge: Eliminate bearing seizure in food processing conveyors (70°C, daily washdown).
Solution: Custom 608 bearings with fluoropolymer seals and food-grade lubricant
Result: Zero failures over 14 months of operation
Contact our bearing engineers for technical specifications sheets, material certifications, and volume pricing:
Email: info@vivalr.com
Phone: (86) 15866781826
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