Manufactured by CHG Bearing, the 6397/4246K is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 4246 mm bore diameter, a mm outer diameter, and a 233 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.
6397/4246K - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6397/4246K |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 4246 mm |
| Width (B) | 233 mm |
| Inner/Outer Ring Height H1 | 225 mm |
| End-face Height Difference h | 180 mm |
| Number of Lubrication Holes n1 | 28 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 3558 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 3222 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 112 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 39 |
| Outer Ring Mounting Hole Count n3 | 112 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 42 |
| Gear Data | |
| Gear Module m | 18 mm |
| Gear Tip Diameter De | 3060 mm |
| Number of Gear Teeth z | 170 |
| Gear Face Width b | 180 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 5070 kg |
6397/4246K mm 4246 mm 233 mm 3558 mm 3222 mm Frequently Asked Questions about 6397/4246K Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 6397/4246K correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
The CHG Bearing 6397/4246K is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
Engineered according to international ISO boundary plans, CHG Bearing supplies 6397/4246K with a precision bore diameter (d) of 4246 mm, an outside diameter (D) of mm, and a nominal ring width (B) of 233 mm. This configuration yields an effective cross-sectional wall thickness of 0 mm and an envelope ratio (D/d) of 0, delivering compact rigidity for OEM machinery housings.
In its sealed configuration (Open Type), CHG Bearing pre-charges 6397/4246K 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.
