Manufactured by CHG Bearing, the 6397/3650K2 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 3650 mm bore diameter, a 4173 mm outer diameter, and a 222 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.
6397/3650K2 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6397/3650K2 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 3650 mm |
| Width (B) | 222 mm |
| Outer Diameter (D) | 4173 mm |
| Inner/Outer Ring Height H1 | 229 mm |
| End-face Height Difference h | 54 mm |
| Number of Lubrication Holes n1 | 4 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2655 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2341 mm |
| Lubrication Port Thread / Size Φ1 | M10×1 |
| Inner Ring Mounting Hole Count n2 | 72 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 39 |
| Outer Ring Mounting Hole Count n3 | 46 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 39 |
| Gear Data | |
| Gear Module m | 18 mm |
| Gear Tip Diameter De | 2185.2 mm |
| Number of Gear Teeth z | 122 |
| Gear Face Width b | 170 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 2960 kg |
6397/3650K2 4173 mm 3650 mm 222 mm 2655 mm 2341 mm Frequently Asked Questions about 6397/3650K2 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 6397/3650K2 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.
Model 6397/3650K2 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 3650 mm) and steep thermal gradients between inner and outer rings.
Standard batches of CHG Bearing 6397/3650K2 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.
The Open Type engineered for 6397/3650K2 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.
