Manufactured by CHG Bearing, the D1797/171 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 171 mm bore diameter, a 328 mm outer diameter, and a 40 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.
D1797/171 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D1797/171 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 171 mm |
| Width (B) | 40 mm |
| Outer Diameter (D) | 328 mm |
| Inner/Outer Ring Height H1 | 35 mm |
| End-face Height Difference h | 35 mm |
| Number of Lubrication Holes n1 | 1 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 275 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 195 mm |
| Lubrication Port Thread / Size Φ1 | 8 |
| Inner Ring Mounting Hole Count n2 | 12 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 12 |
| Outer Ring Mounting Hole Count n3 | 12 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 13 |
| Gear Data | |
| Gear Module m | 4 mm |
| Gear Tip Diameter De | 320 mm |
| Number of Gear Teeth z | 80 |
| Gear Face Width b | 35 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 14.3 kg |
D1797/171 328 mm 171 mm 40 mm 275 mm 195 mm Frequently Asked Questions about D1797/171 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing D1797/171 Crossed Roller Slewing Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF D1797/171, FAG D1797/171, NSK D1797/171. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing D1797/171 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
Quality starts with raw material selection: CHG Bearing crafts D1797/171 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.
The Open Type engineered for D1797/171 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.
