Manufactured by CHG Bearing, the 2787/1020G2 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 1020 mm bore diameter, a 1250 mm outer diameter, and a 64 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.
2787/1020G2 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 2787/1020G2 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 1020 mm |
| Width (B) | 64 mm |
| Outer Diameter (D) | 1250 mm |
| Number of Lubrication Holes n1 | 3 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 1210 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 1060 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 30 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 17 |
| Outer Ring Mounting Hole Count n3 | 30 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 13.5 |
| Gear Data | |
| Gear Module m | 5 mm |
| Gear Tip Diameter De | 991 mm |
| Number of Gear Teeth z | 200 |
| Gear Face Width b | 27 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 176 kg |
2787/1020G2 1250 mm 1020 mm 1210 mm 1060 mm 64 mm Frequently Asked Questions about 2787/1020G2 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies 2787/1020G2 with a precision bore diameter (d) of 1020 mm, an outside diameter (D) of 1250 mm, and a nominal ring width (B) of 64 mm. This configuration yields an effective cross-sectional wall thickness of 115.0 mm and an envelope ratio (D/d) of 1.23, delivering compact rigidity for OEM machinery housings.
Standard batches of CHG Bearing 2787/1020G2 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
Model 2787/1020G2 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 1020 mm) and steep thermal gradients between inner and outer rings.
For international ocean and air freight, CHG Bearing packs 2787/1020G2 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
