Manufactured by CHG Bearing, the 1787/1640G is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 1640 mm bore diameter, a 2050 mm outer diameter, and a 160 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.
1787/1640G - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 1787/1640G |
| 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) | 1640 mm |
| Width (B) | 160 mm |
| Outer Diameter (D) | 2050 mm |
| Number of Lubrication Holes n1 | 2 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1990 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1710 mm |
| Lubrication Port Thread / Size Φ1 | 14 |
| Inner Ring Mounting Hole Count n2 | 30 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 28 |
| Outer Ring Mounting Hole Count n3 | 30 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 28 |
| Gear Data | |
| Gear Module m | 10 mm |
| Gear Tip Diameter De | 2108 mm |
| Number of Gear Teeth z | 210 |
| Gear Face Width b | 105 mm |
| Addendum Modification Coefficient x | -0.6 |
| Reference Data | |
| Reference Mass (kg) | 1264 kg |
1787/1640G 2050 mm 1990 mm 1640 mm 160 mm 1710 mm Frequently Asked Questions about 1787/1640G Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 1787/1640G, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
To ensure optimum performance of CHG Bearing 1787/1640G 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 1640 mm bore. For the 2050 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Model 1787/1640G 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 1640 mm) and steep thermal gradients between inner and outer rings.
Sourcing 1787/1640G directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Four-Point Contact Ball Slewing Bearings.
