Manufactured by CHG Bearing, the 1788/2617K 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.
1788/2617K - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1788/2617K |
| 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 |
1788/2617K 2919 mm 2850 mm 2617 mm 137 mm 2677 mm Frequently Asked Questions about 1788/2617K Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The CHG Bearing 1788/2617K is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 1788/2617K. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Quality starts with raw material selection: CHG Bearing crafts 1788/2617K 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.
To extend the trouble-free lifespan of CHG Bearing 1788/2617K, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
