Manufactured by CHG Bearing, the 787/675 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 675 mm bore diameter, a 875 mm outer diameter, and a 80 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.
787/675 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 787/675 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 675 mm |
| Width (B) | 80 mm |
| Outer Diameter (D) | 875 mm |
| Number of Lubrication Holes n1 | 4 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 822 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 706 mm |
| Lubrication Port Thread / Size Φ1 | G1/4 |
| Inner Ring Mounting Hole Count n2 | 24 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 20 |
| Outer Ring Mounting Hole Count n3 | 24 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 26 |
| Reference Data | |
| Reference Mass (kg) | 120 kg |
787/675 875 mm 675 mm 80 mm 706 mm 822 mm Frequently Asked Questions about 787/675 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The CHG Bearing 787/675 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 787/675 with a precision bore diameter (d) of 675 mm, an outside diameter (D) of 875 mm, and a nominal ring width (B) of 80 mm. This configuration yields an effective cross-sectional wall thickness of 100.0 mm and an envelope ratio (D/d) of 1.3, delivering compact rigidity for OEM machinery housings.
To ensure optimum performance of CHG Bearing 787/675 Four-Point Contact Ball Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 675 mm bore. For the 875 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
To safeguard CHG Bearing 787/675 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (675 mm x 875 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
