Manufactured by CHG Bearing, the 1797/4250G is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 4250 mm bore diameter, a 4940 mm outer diameter, and a 250 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.
1797/4250G - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1797/4250G |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 4250 mm |
| Width (B) | 250 mm |
| Outer Diameter (D) | 4940 mm |
| Inner/Outer Ring Height H1 | 225 mm |
| End-face Height Difference h | 25 mm |
| Number of Lubrication Holes n1 | 9 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 4840 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 4350 mm |
| Lubrication Port Thread / Size Φ1 | 16 |
| Inner Ring Mounting Hole Count n2 | 72 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 48 |
| Outer Ring Mounting Hole Count n3 | 72 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 48 |
| Gear Data | |
| Gear Module m | 30 mm |
| Gear Tip Diameter De | 5082 mm |
| Number of Gear Teeth z | 168 |
| Gear Face Width b | 200 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 8954 kg |
1797/4250G 4940 mm 4250 mm 250 mm 4840 mm 4350 mm Frequently Asked Questions about 1797/4250G Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 1797/4250G 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.
The Open Type engineered for 1797/4250G 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.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 1797/4250G, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Quality starts with raw material selection: CHG Bearing crafts 1797/4250G 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.
