Manufactured by CHG Bearing, the 131.50.3150.12 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 2868 mm bore diameter, a 3432 mm outer diameter, and a 270 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.
131.50.3150.12 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 131.50.3150.12 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 2868 mm |
| Width (B) | 270 mm |
| Outer Diameter (D) | 3432 mm |
| Inner/Outer Ring Height H1 | 321 mm |
| End-face Height Difference h | 70 mm |
| Number of Lubrication Holes n1 | 12 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 5360 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 4930 mm |
| Lubrication Port Thread / Size Φ1 | M10×1 |
| Inner Ring Mounting Hole Count n2 | 120 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 48 |
| Outer Ring Mounting Hole Count n3 | 120 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 48 |
| Gear Data | |
| Gear Module m | 25 mm |
| Gear Tip Diameter De | 5650 mm |
| Number of Gear Teeth z | 223 |
| Gear Face Width b | 220 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 13078 kg |
131.50.3150.12 3432 mm 2868 mm 5360 mm 4930 mm 270 mm Frequently Asked Questions about 131.50.3150.12 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 131.50.3150.12 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 2868 mm) and steep thermal gradients between inner and outer rings.
To safeguard CHG Bearing 131.50.3150.12 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (2868 mm x 3432 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 131.50.3150.12 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.
As standard production, CHG Bearing subjects 131.50.3150.12 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.
