Manufactured by CHG Bearing, the HWAA1145HP4 is a precision Super Duplex Angular Contact Ball Bearings. Key dimensional parameters include a 71.4375 mm bore diameter, a 88.9 mm outer diameter, and a 15.875 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.
HWAA1145HP4 - Super Duplex Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HWAA1145HP4 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super Duplex Angular Contact Ball Bearing |
| Series | AA11 |
| Seal Type | Open / Single-Sided Sealed / Double-Sided Sealed |
| Load Direction | Combined Radial and Axial |
| Row Configuration | Double Row |
| Dimensions | |
| Bore Diameter (d) | 71.4375 mm |
| Width (B) | 15.875 mm |
| Outer Diameter (D) | 88.9 mm |
| Outside Diameter Tolerance | -0.01-0 mm |
| Width Tolerance | -0.38-0 mm |
| Inner-Ring Land Diameter (L1 / d1) | 77.20584 mm |
| Outer-Ring Land Diameter (L2 / D1) | 83.12912 mm |
| Counterbore Diameter L3 | N/A mm |
| Performance | |
| Basic Static Radial Load Rating C0r (N) | 26700 N |
| Basic Dynamic Radial Load Rating Cr (N) | 13500 N |
| Basic Static Axial Load Rating C0a (N) | 14500 N |
| Basic Dynamic Axial Load Rating Ca (N) | N/A N |
| Material | |
| Mass (kg) | 0.188Kg kg |
| Ring Material | Stainless Steel / Bearing Steel |
| Cage Material | Brass / Polyimide / PEEK / Phenolic Resin / Phenolic Resin Fabric Laminate |
| Ball Material | Ceramic / Stainless Steel / Bearing Steel |
| Operating Temperature Range (°C) | -50 to +100 °C °C |
| Precision Class | P4 |
| Radial Internal Clearance | N/A mm |
HWAA1145HP4 88.9 mm 71.4375 mm 15.875 mm 83.12912 mm 77.20584 mm Frequently Asked Questions about HWAA1145HP4 Super Duplex Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each HWAA1145HP4 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 (71.4375 mm bore side) ensures perfect planar contact without edge binding.
When fitting HWAA1145HP4 over a 71.4375 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.
Standard batches of CHG Bearing HWAA1145HP4 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
The CHG Bearing HWAA1145HP4 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
