Manufactured by CHG Bearing, the LM278849DW-1/LM278810-1/LM2788D-1 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 585.788 mm bore diameter, a 771.525 mm outer diameter, and a 479.425 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.
LM278849DW-1/LM278810-1/LM2788D-1 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | LM278849DW-1/LM278810-1/LM2788D-1 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 585.788 mm |
| Width (B) | 479.425 mm |
| Outer Diameter (D) | 771.525 mm |
| Bore Diameter Tolerance | 0 – +0.051 mm |
| Outside Diameter Tolerance | 0 – +0.076 mm |
| Inner Ring Chamfer | 3.3 min mm |
| Outer Ring Chamfer | 6.4 min mm |
| Inner Ring Assembly Width Tolerance | -1.524 – +1.524 mm |
| Outer Ring Assembly Width | 479.425 mm |
| Outer Ring Assembly Width Tolerance | -1.524 – +1.524 mm |
| Shaft Abutment Diameter | 622 mm |
| Housing Abutment Diameter | 725 mm |
| Lubrication Hole Diameter | 8 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 7610 kN |
| Basic Static Load Rating C0 (kN) | 24600 kN |
| Material | |
| Mass (kg) | 586 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Rolling Element Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | Grade 10 Steel |
| Lubrication Groove Width | 15 mm |
LM278849DW-1/LM278810-1/LM2788D-1 771.525 mm 585.788 mm 479.425 mm Frequently Asked Questions about LM278849DW-1/LM278810-1/LM2788D-1 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing LM278849DW-1/LM278810-1/LM2788D-1 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (585.788 mm x 771.525 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Model LM278849DW-1/LM278810-1/LM2788D-1 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 585.788 mm) and steep thermal gradients between inner and outer rings.
Quality starts with raw material selection: CHG Bearing crafts LM278849DW-1/LM278810-1/LM2788D-1 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for LM278849DW-1/LM278810-1/LM2788D-1, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
