Manufactured by CHG Bearing, the 789/1260G2 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 1260 mm bore diameter, a 1509 mm outer diameter, and a 90 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.
789/1260G2 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 789/1260G2 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 1260 mm |
| Width (B) | 90 mm |
| Outer Diameter (D) | 1509 mm |
| Number of Lubrication Holes n1 | 2 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1465 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1315 mm |
| Lubrication Port Thread / Size Φ1 | ZG1/8 |
| Inner Ring Mounting Hole Count n2 | 36 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 20 |
| Outer Ring Mounting Hole Count n3 | 36 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 22 |
| Reference Data | |
| Reference Mass (kg) | 274 kg |
789/1260G2 1509 mm 1260 mm 90 mm 1315 mm 1465 mm Frequently Asked Questions about 789/1260G2 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing 789/1260G2 Four-Point Contact Ball Slewing Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 789/1260G2, FAG 789/1260G2, NSK 789/1260G2. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
As standard production, CHG Bearing subjects 789/1260G2 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
Standard batches of CHG Bearing 789/1260G2 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.
Quality starts with raw material selection: CHG Bearing crafts 789/1260G2 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
