Manufactured by CHG Bearing, the 6397/4375 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 4375 mm bore diameter, a 4900 mm outer diameter, and a 275 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.
6397/4375 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6397/4375 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 4375 mm |
| Width (B) | 275 mm |
| Outer Diameter (D) | 4900 mm |
| Inner/Outer Ring Height H1 | 295 mm |
| End-face Height Difference h | 270 mm |
| Number of Lubrication Holes n1 | 20 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 3606 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 3321 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 96 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 30 |
| Outer Ring Mounting Hole Count n3 | 96 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 33 |
| Gear Data | |
| Gear Module m | 16 mm |
| Gear Tip Diameter De | 3184 mm |
| Number of Gear Teeth z | 199 |
| Gear Face Width b | 170 mm |
| Addendum Modification Coefficient x | -0.5 |
| Reference Data | |
| Reference Mass (kg) | 5050 kg |
6397/4375 4900 mm 4375 mm 275 mm 3606 mm 3321 mm Frequently Asked Questions about 6397/4375 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 6397/4375. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
To safeguard CHG Bearing 6397/4375 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (4375 mm x 4900 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
As standard production, CHG Bearing subjects 6397/4375 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.
For international ocean and air freight, CHG Bearing packs 6397/4375 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
