Manufactured by CHG Bearing, the D787/870G2 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 870 mm bore diameter, a 1130 mm outer diameter, and a 100 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.
D787/870G2 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D787/870G2 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 870 mm |
| Width (B) | 100 mm |
| Outer Diameter (D) | 1130 mm |
| Number of Lubrication Holes n1 | 3 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1074 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 926 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 24 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 16 |
| Outer Ring Mounting Hole Count n3 | 24 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 16 |
| Reference Data | |
| Reference Mass (kg) | 254 kg |
D787/870G2 1130 mm 870 mm 100 mm 926 mm 1074 mm Frequently Asked Questions about D787/870G2 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing D787/870G2 Four-Point Contact Ball Slewing Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF D787/870G2, FAG D787/870G2, NSK D787/870G2. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
To extend the trouble-free lifespan of CHG Bearing D787/870G2, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Engineered according to international ISO boundary plans, CHG Bearing supplies D787/870G2 with a precision bore diameter (d) of 870 mm, an outside diameter (D) of 1130 mm, and a nominal ring width (B) of 100 mm. This configuration yields an effective cross-sectional wall thickness of 130.0 mm and an envelope ratio (D/d) of 1.3, delivering compact rigidity for OEM machinery housings.
The CHG Bearing D787/870G2 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.
