UC309 Insert Spherical Bearing
The DUHUI Bearing UC309 insert spherical bearing is an OE-spec replacement component for heavy-duty industrial, agricultural, and material handling equipment. This wide inner ring ball bearing features a spherical outer diameter for self-alignment in mounted bearing assemblies, compensating for shaft misalignment in demanding applications. Manufactured to match original equipment specifications including UC309, this unit delivers reliable performance for heavy-duty mounted bearing applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DBK120 |
| Part Number | UC309 |
| Bore Diameter (d) | 45.00 mm (1.772 inch) |
| Outside Diameter (DSP) | 100.00 mm (3.937 inch) |
| Width (B) | 57.00 mm (2.244 inch) |
| Outer Ring Width (C) | 29.00 mm (1.142 inch) |
| Distance Raceway (S) | 22.00 mm (0.866 inch) |
| Grease Fitting (g) | 35.00 mm (1.378 inch) |
| Grease Fitting Thread (ds) | M10×1.25 |
| Dynamic Load Rating (Cr) | 53,000 N (11,914 lbf) |
| Static Load Rating (C0r) | 32,000 N (7,194 lbf) |
| Locking Type | Set Screw (2 Screws) |
| Seal Type | Double Sealed (RSR on both sides) |
| Weight | 1.50 kg (3.31 lb) |
| Temperature Range | -20 to 100 °C (-4 to 212 °F) |
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code: DBK120
OE Numbers: UC309, UC309E
Reference Numbers (Interchange):
Timken: UC309
SKF: UC309
FYH: UC309
AMI Bearings: UC309
TRITAN: UC309
SNR: UC309G2T04
Product Features
- Wide inner ring design provides effective shaft support for heavy-duty industrial applications.
- Spherical outer diameter compensates for shaft misalignment in mounted bearing housings.
- Set screw locking mechanism secures the bearing to the shaft, ideal for reversing load applications.
- Double RSR seals on both sides protect against contaminants and retain lubricant.
- Relubricatable via M10×1.25 lubrication hole with grease fitting for extended service life.
- Premium chrome steel construction with super-finished raceways and grade 10 balls for smooth, low-noise operation under heavy loads.
Installation Notes
- This insert bearing is designed for use in customer-supplied housings with corresponding spherical inside surfaces.
- Before installation, clean the shaft and housing bore thoroughly and inspect for damage or wear.
- Tighten set screws to the manufacturer’s specified torque – over-tightening can distort the bearing inner ring.
- Relubricate through the M10×1.25 grease fitting after installation to ensure proper lubrication.
- We recommend professional installation to verify fitment and ensure correct shaft alignment.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces insert spherical bearings, wheel bearing kits, and hub assemblies to OE specifications. Contact us
