Manufactured by CHG Bearing, the 48393D/48328 is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 136.525 mm bore diameter, a 203.2 mm outer diameter, and a 77.788 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
48393D/48328 - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 48393D/48328 |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 3 |
| Dimensions | |
| Bore Diameter (d) | 136.525 mm |
| Width (B) | 77.788 mm |
| Outer Diameter (D) | 203.2 mm |
| Bore Diameter Tolerance | 0 – +0.013 mm |
| Outside Diameter Tolerance | 0 – +0.013 mm |
| Inner Ring Chamfer | 3.2 mm |
| Outer Ring Chamfer | 1.6 mm |
| Inner Ring Assembly Width Tolerance | -0.406 – +0.406 mm |
| Outer Ring Assembly Width | 77.788 mm |
| Outer Ring Assembly Width Tolerance | -0.406 – +0.406 mm |
| Shaft Abutment Diameter | 149.7 mm |
| Housing Abutment Diameter | 191.8 mm |
| Lubrication Hole Diameter | 5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 405 kN |
| Basic Static Load Rating C0 (kN) | 944 kN |
| Material | |
| Mass (kg) | 9.22 kg |
| Ring Material | Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 10 mm |
| Roller Material | Bearing Steel |
48393D/48328 203.2 mm 136.525 mm Frequently Asked Questions about 48393D/48328 Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects 48393D/48328 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
To extend the trouble-free lifespan of CHG Bearing 48393D/48328, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
To match diverse operational dynamics, CHG Bearing supplies 48393D/48328 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
Model 48393D/48328 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 136.525 mm) and steep thermal gradients between inner and outer rings.
