Manufactured by CHG Bearing, the 112.40.2800.12K2 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 2625 mm bore diameter, a 2978 mm outer diameter, and a 144 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.
112.40.2800.12K2 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 112.40.2800.12K2 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 2625 mm |
| Width (B) | 144 mm |
| Outer Diameter (D) | 2978 mm |
| Inner/Outer Ring Height H1 | 132 mm |
| End-face Height Difference h | 12 mm |
| Number of Lubrication Holes n1 | 8 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2910 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2691 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 56 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 33 |
| Outer Ring Mounting Hole Count n3 | 56 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 33 |
| Gear Data | |
| Gear Module m | 20 mm |
| Gear Tip Diameter De | 3080 mm |
| Number of Gear Teeth z | 151 |
| Gear Face Width b | 120 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 1741 kg |
112.40.2800.12K2 2978 mm 2625 mm 144 mm 2910 mm 2691 mm Frequently Asked Questions about 112.40.2800.12K2 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Quality starts with raw material selection: CHG Bearing crafts 112.40.2800.12K2 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.
To safeguard CHG Bearing 112.40.2800.12K2 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (2625 mm x 2978 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
In its sealed configuration (Open Type), CHG Bearing pre-charges 112.40.2800.12K2 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 112.40.2800.12K2, 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.
