Manufactured by CHG Bearing, the 6397/4747 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 4747 mm bore diameter, a 5309 mm outer diameter, and a 268 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.
6397/4747 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6397/4747 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 4747 mm |
| Width (B) | 268 mm |
| Outer Diameter (D) | 5309 mm |
| Inner/Outer Ring Height H1 | 343 mm |
| End-face Height Difference h | 280 mm |
| Number of Lubrication Holes n1 | 30 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 4245 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 3785 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 100 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 52 |
| Outer Ring Mounting Hole Count n3 | 100 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 56 |
| Gear Data | |
| Gear Module m | 24 mm |
| Gear Tip Diameter De | 3576 mm |
| Number of Gear Teeth z | 149 |
| Gear Face Width b | 220 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 10350 kg |
6397/4747 5309 mm 4747 mm 268 mm 4245 mm 3785 mm Frequently Asked Questions about 6397/4747 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open Type engineered for 6397/4747 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.
Yes, 100% of 6397/4747 Three-row Cylindrical Roller Slewing Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
In its sealed configuration (Open Type), CHG Bearing pre-charges 6397/4747 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.
Standard batches of CHG Bearing 6397/4747 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
