Manufactured by CHG Bearing, the 51280 is a precision Tapered Roller Thrust Bearings. Key dimensional parameters include a 400 mm bore diameter, a 540 mm outer diameter, and a 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.
51280 - Tapered Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 51280 |
| Brand | CHG® |
| Construction | Thrust Ball Bearing |
| Type | Single-Direction Thrust Ball Bearing |
| Characteristics | |
| Load Direction | Axial — Single Direction |
| Limiting Speed — Grease (r/min) | 220 r/min |
| Limiting Speed — Oil (r/min) | 340 r/min |
| Dimensions | |
| Bore Diameter (d) | 400 mm |
| Outer Diameter (D) | 540 mm |
| Contact Angle α (°) | N/A ° |
| Chamfer Dimension r (min.) | 4 mm |
| Dimension A | N/A mm |
| Bearing Height T | 112 mm |
| Dimension d1 | 405 mm |
| Dimension D12 | 535 mm |
| Dimension C | N/A mm |
| Dimension B | N/A mm |
| Chamfer Dimension r1 (min.) | N/A mm |
| Performance | |
| Basic Dynamic Axial Load Rating Ca (kN) | 802 kN |
| Basic Static Axial Load Rating C0a (kN) | 4310 kN |
| Material | |
| Mass (kg) | 74.5 kg |
51280 540 mm 405 mm 400 mm 535 mm Frequently Asked Questions about 51280 Tapered Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the 51280 Tapered Roller Thrust Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
In its sealed configuration (Open Type), CHG Bearing pre-charges 51280 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.
When fitting 51280 over a 400 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Yes, 100% of 51280 Tapered Roller Thrust Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
