Manufactured by CHG Bearing, the M252349/10 is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 269.875 mm bore diameter, a 381 mm outer diameter, and a 158.75 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.
M252349/10 - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | M252349/10 |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 269.875 mm |
| Width (B) | 158.75 mm |
| Outer Diameter (D) | 381 mm |
| Bore Diameter Tolerance | -0.1 – 0 mm |
| Outside Diameter Tolerance | -0.16 – 0 mm |
| Inner Ring Chamfer | 7.5 mm |
| Outer Ring Chamfer | 7.5 mm |
| Inner Ring Assembly Width Tolerance | -1 – 0 mm |
| Outer Ring Assembly Width | 280 mm |
| Outer Ring Assembly Width Tolerance | -0.50 – 0 mm |
| Shaft Abutment Diameter | 991 mm |
| Housing Abutment Diameter | 1244 mm |
| Lubrication Hole Diameter | 14 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 9340 kN |
| Basic Static Load Rating C0 (kN) | 22500 kN |
| Material | |
| Mass (kg) | 1170 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 35 mm |
| Roller Material | Case-Hardened Steel / Bearing Steel |
M252349/10 381 mm 269.875 mm Frequently Asked Questions about M252349/10 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 M252349/10 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.
The CHG Bearing M252349/10 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
Model M252349/10 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 269.875 mm) and steep thermal gradients between inner and outer rings.
To extend the trouble-free lifespan of CHG Bearing M252349/10, 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.
