Manufactured by CHG Bearing, the 2787/1190 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a mm bore diameter, a 1640 mm outer diameter, and a 115 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.
2787/1190 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 2787/1190 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Width (B) | 115 mm |
| Outer Diameter (D) | 1640 mm |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1570 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1300 mm |
| Inner Ring Mounting Hole Count n2 | 48 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 24 |
| Outer Ring Mounting Hole Count n3 | 48 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 26 |
| Gear Data | |
| Gear Module m | 10 mm |
| Gear Tip Diameter De | 1190 mm |
| Number of Gear Teeth z | 119 |
| Gear Face Width b | 100 mm |
| Addendum Modification Coefficient x | 0.75 |
| Reference Data | |
| Reference Mass (kg) | 704 kg |
2787/1190 1640 mm mm 1570 mm 1300 mm 115 mm Frequently Asked Questions about 2787/1190 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Standard batches of CHG Bearing 2787/1190 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.
The CHG Bearing 2787/1190 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.
In its sealed configuration (Open Type), CHG Bearing pre-charges 2787/1190 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 Open Type engineered for 2787/1190 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
