Manufactured by CHG Bearing, the D178794K1 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 53 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.
D178794K1 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D178794K1 |
| 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) | 53 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 | 40 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 55.5 kg |
D178794K1 665 mm 630 mm 468 mm 53 mm 500 mm Frequently Asked Questions about D178794K1 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges D178794K1 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
To ensure optimum performance of CHG Bearing D178794K1 Four-Point Contact Ball Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 468 mm bore. For the 665 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Engineered according to international ISO boundary plans, CHG Bearing supplies D178794K1 with a precision bore diameter (d) of 468 mm, an outside diameter (D) of 665 mm, and a nominal ring width (B) of 53 mm. This configuration yields an effective cross-sectional wall thickness of 98.5 mm and an envelope ratio (D/d) of 1.42, delivering compact rigidity for OEM machinery housings.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for D178794K1, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
