Manufactured by CHG Bearing, the 81248 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 240 mm bore diameter, a 340 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.
81248 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81248 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 240 mm |
| Outer Diameter (D) | 340 mm |
| Minimum Chamfer Dimension rmin | 2.1 mm |
| Overall Height H | 78 mm |
| Inner-Ring Land Diameter (L1 / d1) | 244 mm |
| Outer-Ring Land Diameter (L2 / D1) | 335 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 300 r/min |
| Limiting Speed – Oil-air (r/min) | 400 r/min |
| Basic Static Axial Load Rating C0a (N) | 4410 N |
| Basic Dynamic Axial Load Rating Ca (N) | 990 N |
| Material | |
| Mass (kg) | 22 kg |
81248 340 mm 335 mm 240 mm 244 mm Frequently Asked Questions about 81248 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs 81248 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
To extend the trouble-free lifespan of CHG Bearing 81248, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Each 81248 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 (240 mm bore side) ensures perfect planar contact without edge binding.
Beyond standard alloy steel, CHG Bearing can customize the 81248 Cylindrical Roller Thrust Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
