Manufactured by CHG Bearing, the 131.50.4000.04K is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 3718 mm bore diameter, a 4282 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.
131.50.4000.04K - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 131.50.4000.04K |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 3718 mm |
| Width (B) | 270 mm |
| Outer Diameter (D) | 4282 mm |
| Inner/Outer Ring Height H1 | 210 mm |
| End-face Height Difference h | 181 mm |
| Number of Lubrication Holes n1 | 24 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2760 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2469 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 90 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 36 |
| Outer Ring Mounting Hole Count n3 | 90 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 39 |
| Gear Data | |
| Gear Module m | 16 mm |
| Gear Tip Diameter De | 2320 mm |
| Number of Gear Teeth z | 145 |
| Gear Face Width b | 161 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 2730 kg |
131.50.4000.04K 4282 mm 3718 mm 270 mm 2760 mm 2469 mm Frequently Asked Questions about 131.50.4000.04K Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects 131.50.4000.04K 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.
In its sealed configuration (Open Type), CHG Bearing pre-charges 131.50.4000.04K 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.
Absolutely. The CHG Bearing 131.50.4000.04K Three-row Cylindrical Roller Slewing Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 131.50.4000.04K, FAG 131.50.4000.04K, NSK 131.50.4000.04K. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
To extend the trouble-free lifespan of CHG Bearing 131.50.4000.04K, 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.
