Manufactured by CHG Bearing, the 79764 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 320 mm bore diameter, a 550 mm outer diameter, and a 85 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.
79764 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 79764 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 320 mm |
| Width (B) | 85 mm |
| Outer Diameter (D) | 550 mm |
| Inner/Outer Ring Height H1 | 75 mm |
| End-face Height Difference h | 10 mm |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 515 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 365 mm |
| Inner Ring Mounting Hole Count n2 | 8 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 18 |
| Outer Ring Mounting Hole Count n3 | 12 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 17 |
| Reference Data | |
| Reference Mass (kg) | 85.6 kg |
79764 550 mm 320 mm 85 mm 515 mm 365 mm Frequently Asked Questions about 79764 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To ensure optimum performance of CHG Bearing 79764 Crossed Roller Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 320 mm bore. For the 550 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
In its sealed configuration (Open Type), CHG Bearing pre-charges 79764 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
The CHG Bearing 79764 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.
Each 79764 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 (320 mm bore side) ensures perfect planar contact without edge binding.
