VXB
IRT1730 Needle 内輪 17x20x30.5mm
IRT1730 Needle Bearing Inner Ring
✔️ 17mm x 20mm x 30.5mm
This IRT1730 inner ring is designed for needle roller bearings that require a hardened, precision-ground raceway. It offers excellent wear resistance and stable operation when paired with matching needle rollers in high-load, high-speed environments.
✅ Type: Needle Bearing Inner Ring
✅ Standard: Metric
✅ Inner Diameter (ID): 17mm
✅ Outer Diameter (OD): 20mm
✅ Width: 30.5mm
✅ Size: 17mm x 20mm x 30.5mm
✅ Quantity: One Inner Ring
Dimensions 表
| ID mm | OD mm | Width mm |
|---|---|---|
| 17mm | 20mm | 30.5mm |
💡 Why use a separate inner ring in needle roller assemblies?
When a shaft cannot serve as a raceway, inner rings provide:
- A hardened, precision surface for longer bearing life
- Better load distribution and improved wear resistance
- Flexibility to use standard needle rollers even on softer shafts
A solid choice for rebuilding or upgrading needle bearing setups. Let me know if you want the matching rollers or outer race!