Manufactured by CHG Bearing, the 81144 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 220 mm bore diameter, a 270 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.
81144 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81144 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 220 mm |
| Outer Diameter (D) | 270 mm |
| Minimum Chamfer Dimension rmin | 1.1 mm |
| Overall Height H | 37 mm |
| Inner-Ring Land Diameter (L1 / d1) | 223 mm |
| Outer-Ring Land Diameter (L2 / D1) | 267 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 500 r/min |
| Limiting Speed – Oil-air (r/min) | 670 r/min |
| Basic Static Axial Load Rating C0a (N) | 1530 N |
| Basic Dynamic Axial Load Rating Ca (N) | 300 N |
| Material | |
| Mass (kg) | 4.5 kg |
81144 270 mm 267 mm 220 mm 223 mm Frequently Asked Questions about 81144 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open Type engineered for 81144 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
To safeguard CHG Bearing 81144 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (220 mm x 270 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
For international ocean and air freight, CHG Bearing packs 81144 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.
Beyond standard alloy steel, CHG Bearing can customize the 81144 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.
