5090 Insert Bearing — Rear Axle
Insert bearing with set screw locking for go-kart rear axle housing assemblies. The set screw design allows secure mounting on the axle shaft without requiring a press fit, simplifying installation and replacement in the field. Pre-greased and sealed.
- MOQ
- 10 pcs
- Lead time
- 30-45 days for standard orders
- Shipping
- FOB Ningbo / Shanghai
Technical data
Specifications
| Model | 5090 |
|---|---|
| Type | Insert bearing with set screw |
| Seal | Pre-sealed |
| Lubrication | Pre-greased for life |
| Locking | Set screw (grub screw) |
Applications
- Rear axle housings
- Pillow block assemblies
- Bearing carrier units
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
- 01Set screw locking — no press fit needed
- 02Pre-greased and sealed
- 03Quick field replacement
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.






Other versions
Kart rear axle insert bearings — by axle size and version
Choose by axle diameter (30 / 40 / 50 mm) and carrier size, then by closure (ZZ or 2RS) and steel or hybrid ceramic. All with C4 clearance and set-screw locking. Not sure which one fits? See where each bearing goes in a kart.
SB208-50
SB208-50 Kart Axle Bearing 50×80 mm — C4 Steel
- Size
- 50 × 80 × 18 mm
- Fits
- Kart rear axle carriers (50 mm axle)
SB208-50 Hybrid Ceramic
SB208-50 Hybrid Ceramic Kart Axle Bearing 50×80 mm
- Size
- 50 × 80 mm
- Fits
- Competition rear axles
SB208-210-2RS-C4 Hybrid
SB208-50 2RS C4 Hybrid Ceramic Kart Axle Bearing
- Size
- 50 × 80 × 18 mm
- Fits
- 50 mm kart axle
SB210-50 ZZ C4
SB210-50 Kart Axle Bearing 50×90×20 mm — C4 ZZ
- Size
- 50 × 90 × 20 mm
- Fits
- Kart rear axle carriers with 90 mm housing
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Application Guides
Request for quotation
Need 5090 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











