Manufactured by CHG Bearing, the 1797/400 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 400 mm bore diameter, a mm outer diameter, and a 80 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.
1797/400 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1797/400 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 400 mm |
| Width (B) | 80 mm |
| Inner/Outer Ring Height H1 | 70 mm |
| End-face Height Difference h | 10 mm |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 575 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 450 mm |
| Inner Ring Mounting Hole Count n2 | 8 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 20 |
| Outer Ring Mounting Hole Count n3 | 12 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 20 |
| Gear Data | |
| Gear Module m | 8 mm |
| Gear Tip Diameter De | 656 mm |
| Number of Gear Teeth z | 80 |
| Gear Face Width b | 80 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 108 kg |
1797/400 mm 400 mm 80 mm 575 mm 450 mm Frequently Asked Questions about 1797/400 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Quality starts with raw material selection: CHG Bearing crafts 1797/400 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
As standard production, CHG Bearing subjects 1797/400 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.
To ensure optimum performance of CHG Bearing 1797/400 Crossed Roller Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 400 mm bore. For the mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
To safeguard CHG Bearing 1797/400 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (400 mm x mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
