Manufactured by CHG Bearing, the D2787/945 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 945.2 mm bore diameter, a 1200 mm outer diameter, and a 56 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.
D2787/945 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D2787/945 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 945.2 mm |
| Width (B) | 56 mm |
| Outer Diameter (D) | 1200 mm |
| Number of Lubrication Holes n1 | 2 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1170 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1044 mm |
| Lubrication Port Thread / Size Φ1 | 8 |
| Inner Ring Mounting Hole Count n2 | 24 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 10 |
| Outer Ring Mounting Hole Count n3 | 20 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 13.5 |
| Gear Data | |
| Gear Module m | 3.5 mm |
| Gear Tip Diameter De | 952 mm |
| Number of Gear Teeth z | 272 |
| Gear Face Width b | 30 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 90 kg |
D2787/945 1200 mm 945.2 mm 1170 mm 1044 mm 56 mm Frequently Asked Questions about D2787/945 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting D2787/945 over a 945.2 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
In its sealed configuration (Open Type), CHG Bearing pre-charges D2787/945 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.
To extend the trouble-free lifespan of CHG Bearing D2787/945, 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.
Built for demanding industrial environments, the D2787/945 Four-Point Contact Ball Slewing Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
