Manufactured by CHG Bearing, the D178794 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 468 mm bore diameter, a 665 mm outer diameter, and a 77 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.
D178794 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D178794 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 468 mm |
| Width (B) | 77 mm |
| Outer Diameter (D) | 665 mm |
| Number of Lubrication Holes n1 | 6 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 630 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 500 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 18 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 18 |
| Outer Ring Mounting Hole Count n3 | 18 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 16 |
| Gear Data | |
| Gear Module m | 6 mm |
| Gear Tip Diameter De | 696 mm |
| Number of Gear Teeth z | 114 |
| Gear Face Width b | 60 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 93.1 kg |
D178794 665 mm 630 mm 468 mm 77 mm 500 mm Frequently Asked Questions about D178794 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects D178794 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.
Every production batch of CHG Bearing D178794 Four-Point Contact Ball Slewing Bearings comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
The Open Type engineered for D178794 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 D178794, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
