Manufactured by CHG Bearing, the 1788/2617 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 2617 mm bore diameter, a 2919 mm outer diameter, and a 137 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.
1788/2617 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1788/2617 |
| 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) | 2617 mm |
| Width (B) | 137 mm |
| Outer Diameter (D) | 2919 mm |
| Number of Lubrication Holes n1 | 7 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2850 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2677 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 84 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 30 |
| Outer Ring Mounting Hole Count n3 | 84 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 27 |
| Gear Data | |
| Gear Module m | 18 mm |
| Gear Tip Diameter De | 3002.4 mm |
| Number of Gear Teeth z | 164 |
| Gear Face Width b | 120 mm |
| Addendum Modification Coefficient x | 0.5 |
| Reference Data | |
| Reference Mass (kg) | 1204 kg |
1788/2617 2919 mm 2850 mm 2617 mm 137 mm 2677 mm Frequently Asked Questions about 1788/2617 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 1788/2617 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 safeguard CHG Bearing 1788/2617 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (2617 mm x 2919 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 1788/2617. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Model 1788/2617 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 2617 mm) and steep thermal gradients between inner and outer rings.
