Manufactured by CHG Bearing, the 48393/48320D is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 136.525 mm bore diameter, a 190.5 mm outer diameter, and a 85.725 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.
48393/48320D - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 48393/48320D |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 136.525 mm |
| Width (B) | 85.725 mm |
| Outer Diameter (D) | 190.5 mm |
| Bore Diameter Tolerance | -0.075 – 0 mm |
| Outside Diameter Tolerance | -0.1 – 0 mm |
| Inner Ring Chamfer | SP mm |
| Outer Ring Chamfer | SP mm |
| Inner Ring Assembly Width Tolerance | -0.50 – 0 mm |
| Outer Ring Assembly Width | 260 mm |
| Outer Ring Assembly Width Tolerance | -0.50 – 0 mm |
| Shaft Abutment Diameter | 670 mm |
| Housing Abutment Diameter | 900 mm |
| Lubrication Hole Diameter | 12 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 4570 kN |
| Basic Static Load Rating C0 (kN) | 10600 kN |
| Material | |
| Mass (kg) | 540 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 30 mm |
| Roller Material | Case-Hardened Steel / Bearing Steel |
48393/48320D 190.5 mm 136.525 mm Frequently Asked Questions about 48393/48320D Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges 48393/48320D with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
Model 48393/48320D 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.
Each 48393/48320D produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (136.525 mm bore side) ensures perfect planar contact without edge binding.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 48393/48320D, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
