Manufactured by CHG Bearing, the 81188 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 440 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.
81188 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81188 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 440 mm |
| Outer Diameter (D) | 540 mm |
| Minimum Chamfer Dimension rmin | 2.1 mm |
| Overall Height H | 80 mm |
| Inner-Ring Land Diameter (L1 / d1) | 444 mm |
| Outer-Ring Land Diameter (L2 / D1) | 535 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 200 r/min |
| Limiting Speed – Oil-air (r/min) | 300 r/min |
| Basic Static Axial Load Rating C0a (N) | 8000 N |
| Basic Dynamic Axial Load Rating Ca (N) | 1430 N |
| Material | |
| Mass (kg) | 39.5 kg |
81188 540 mm 535 mm 440 mm 444 mm Frequently Asked Questions about 81188 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 81188. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 81188 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.
Each 81188 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 (440 mm bore side) ensures perfect planar contact without edge binding.
To safeguard CHG Bearing 81188 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (440 mm x 540 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
