Manufactured by CHG Bearing, the 81172 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 360 mm bore diameter, a 440 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.
81172 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81172 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 360 mm |
| Outer Diameter (D) | 440 mm |
| Minimum Chamfer Dimension rmin | 2 mm |
| Overall Height H | 65 mm |
| Inner-Ring Land Diameter (L1 / d1) | 364 mm |
| Outer-Ring Land Diameter (L2 / D1) | 436 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 280 r/min |
| Limiting Speed – Oil-air (r/min) | 380 r/min |
| Basic Static Axial Load Rating C0a (N) | 4410 N |
| Basic Dynamic Axial Load Rating Ca (N) | 810 N |
| Material | |
| Mass (kg) | 19.5 kg |
81172 440 mm 436 mm 360 mm 364 mm Frequently Asked Questions about 81172 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing 81172 Cylindrical Roller Thrust Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 81172, FAG 81172, NSK 81172. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Each 81172 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 (360 mm bore side) ensures perfect planar contact without edge binding.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 81172 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.
As standard production, CHG Bearing subjects 81172 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
