Manufactured by CHG Bearing, the L281148/L281110CD is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 660.4 mm bore diameter, a 812.8 mm outer diameter, and a 203.2 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.
L281148/L281110CD - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | L281148/L281110CD |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 660.4 mm |
| Width (B) | 203.2 mm |
| Outer Diameter (D) | 812.8 mm |
| Bore Diameter Tolerance | -0.03 – 0 mm |
| Outside Diameter Tolerance | -0.04 – 0 mm |
| Inner Ring Chamfer | 3 mm |
| Outer Ring Chamfer | 4 mm |
| Inner Ring Assembly Width Tolerance | -0.3 – 0 mm |
| Outer Ring Assembly Width | 120 mm |
| Outer Ring Assembly Width Tolerance | -0.40 – 0 mm |
| Shaft Abutment Diameter | 250 mm |
| Housing Abutment Diameter | 346 mm |
| Lubrication Hole Diameter | 6 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1000 kN |
| Basic Static Load Rating C0 (kN) | 1920 kN |
| Material | |
| Mass (kg) | 42 kg |
| Ring Material | Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 12 mm |
| Roller Material | Bearing Steel |
L281148/L281110CD 812.8 mm 660.4 mm Frequently Asked Questions about L281148/L281110CD Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To match diverse operational dynamics, CHG Bearing supplies L281148/L281110CD 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.
Standard batches of CHG Bearing L281148/L281110CD conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
The CHG Bearing L281148/L281110CD 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.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing L281148/L281110CD correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
