Manufactured by CHG Bearing, the 1797/1785 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 1785 mm bore diameter, a 2178 mm outer diameter, and a 220 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.
1797/1785 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1797/1785 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 1785 mm |
| Width (B) | 220 mm |
| Outer Diameter (D) | 2178 mm |
| Inner/Outer Ring Height H1 | 210 mm |
| End-face Height Difference h | 20 mm |
| Number of Lubrication Holes n1 | 14 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2110 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1851 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 48 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 33 |
| Outer Ring Mounting Hole Count n3 | 48 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 33 |
| Gear Data | |
| Gear Module m | 18 mm |
| Gear Tip Diameter De | 2264.4 mm |
| Number of Gear Teeth z | 125 |
| Gear Face Width b | 123 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 1941 kg |
1797/1785 2178 mm 1785 mm 220 mm 2110 mm 1851 mm Frequently Asked Questions about 1797/1785 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Beyond standard alloy steel, CHG Bearing can customize the 1797/1785 Crossed Roller Slewing Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
To match diverse operational dynamics, CHG Bearing supplies 1797/1785 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
To safeguard CHG Bearing 1797/1785 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (1785 mm x 2178 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To extend the trouble-free lifespan of CHG Bearing 1797/1785, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
