Manufactured by CHG Bearing, the 517/780 is a precision Tapered Roller Thrust Bearings. Key dimensional parameters include a 780 mm bore diameter, a 930 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.
517/780 - Tapered Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 517/780 |
| Brand | CHG® |
| Construction | Thrust Ball Bearing |
| Type | Single-Direction Thrust Ball Bearing |
| Characteristics | |
| Load Direction | Axial — Single Direction |
| Limiting Speed — Grease (r/min) | 150 r/min |
| Limiting Speed — Oil (r/min) | 200 r/min |
| Dimensions | |
| Bore Diameter (d) | 780 mm |
| Outer Diameter (D) | 930 mm |
| Contact Angle α (°) | N/A ° |
| Chamfer Dimension r (min.) | 3.5 mm |
| Dimension A | N/A mm |
| Bearing Height T | 100 mm |
| Dimension d1 | 782 mm |
| Dimension D12 | 930 mm |
| Dimension C | N/A mm |
| Dimension B | N/A mm |
| Chamfer Dimension r1 (min.) | N/A mm |
| Performance | |
| Basic Dynamic Axial Load Rating Ca (kN) | 800 kN |
| Basic Static Axial Load Rating C0a (kN) | 6069 kN |
| Material | |
| Mass (kg) | 129 kg |
517/780 930 mm 782 mm 780 mm 930 mm Frequently Asked Questions about 517/780 Tapered Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The CHG Bearing 517/780 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies 517/780 with a precision bore diameter (d) of 780 mm, an outside diameter (D) of 930 mm, and a nominal ring width (B) of mm. This configuration yields an effective cross-sectional wall thickness of 0 mm and an envelope ratio (D/d) of 0, delivering compact rigidity for OEM machinery housings.
To safeguard CHG Bearing 517/780 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (780 mm x 930 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To ensure optimum performance of CHG Bearing 517/780 Tapered Roller Thrust Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 780 mm bore. For the 930 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
