Manufactured by CHG Bearing, the 2787/985.6 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a mm bore diameter, a 1198 mm outer diameter, and a 59 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.
2787/985.6 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 2787/985.6 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Width (B) | 59 mm |
| Outer Diameter (D) | 1198 mm |
| Number of Lubrication Holes n1 | 4 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1170 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1055 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 24 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 14 |
| Outer Ring Mounting Hole Count n3 | 16 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 18 |
| Gear Data | |
| Gear Module m | 8 mm |
| Gear Tip Diameter De | 985.6 mm |
| Number of Gear Teeth z | 125 |
| Gear Face Width b | 45.5 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 81.7 kg |
2787/985.6 1198 mm mm 1170 mm 1055 mm 59 mm Frequently Asked Questions about 2787/985.6 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 2787/985.6 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces ( mm x 1198 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
The Open Type engineered for 2787/985.6 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.
To extend the trouble-free lifespan of CHG Bearing 2787/985.6, 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.
Quality starts with raw material selection: CHG Bearing crafts 2787/985.6 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.
