6003 Kart Wheel Bearing 17×35×10 mm
OTT 6003 is a compact 17 mm-bore kart wheel bearing (17×35×10 mm). The steel version has carbon-nitrided races and balls — a hard, wear-resistant surface over a tough core that resists pitting and shock loads — and is pre-filled with kart-specific grease. Non-contact ZZ metal shields keep drag to a minimum and deflect larger debris, making them the right choice for clean, dry track conditions. A hybrid ceramic version with Japanese-made Si₃N₄ balls and low-contact rubber seals is also available for teams chasing lower rolling resistance.
- Bore (d)
- 17 mm
- Outer dia. (D)
- 35 mm
- Width
- 10 mm
- MOQ
- 10 pcs
- Lead time
- 30-45 days for standard orders
- Shipping
- FOB Ningbo / Shanghai
Technical data
Specifications
| Model | 6003 |
|---|---|
| Inner Diameter | 17 mm |
| Outer Diameter | 35 mm |
| Width | 10 mm |
| Heat Treatment | Carbon-nitrided races and balls |
| Lubrication | Kart-specific high-performance grease |
| Versions | Steel ZZ (non-contact metal shields) / Hybrid ceramic with low-contact rubber seals |
Applications
- Kart wheel hubs (17 mm spindle)
- Front wheels
- Clean, dry track conditions (ZZ)
Fitment note: cross-references and vehicle applications are for identification. Send us the OE number, VIN or a sample and we will confirm the exact fitment before you order.
Key Features
- 01Carbon-nitrided steel for wear and pitting resistance
- 02Non-contact ZZ shields — minimal drag
- 03Kart-specific grease fill
- 04Hybrid ceramic upgrade available
Packaging
Available in OTT branded packaging or custom OEM packaging. Individual bearings are sealed in PE bags, packed in branded carton boxes, then palletized in wooden crates for export shipping.






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Application Guides
Request for quotation
Need 6003 in volume, or a variant of it?
Share an OE or competitor number, a drawing or target dimensions and your annual volume. Samples available for qualified projects.
- MOQ
- 10 pcs / model
- Lead time
- 30-45 days for standard orders
- Shipping
- FOB Ningbo / Shanghai





