Manufactured by CHG Bearing, the 787/304RG2 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 304 mm bore diameter, a 454 mm outer diameter, and a 56 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.
787/304RG2 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 787/304RG2 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 304 mm |
| Width (B) | 56 mm |
| Outer Diameter (D) | 454 mm |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 490 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 332 mm |
| Inner Ring Mounting Hole Count n2 | 12 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 18 |
| Outer Ring Mounting Hole Count n3 | 8 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 18 |
| Reference Data | |
| Reference Mass (kg) | 23.7 kg |
787/304RG2 454 mm 304 mm 56 mm 332 mm 490 mm Frequently Asked Questions about 787/304RG2 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 787/304RG2 with a precision bore diameter (d) of 304 mm, an outside diameter (D) of 454 mm, and a nominal ring width (B) of 56 mm. This configuration yields an effective cross-sectional wall thickness of 75.0 mm and an envelope ratio (D/d) of 1.49, delivering compact rigidity for OEM machinery housings.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 787/304RG2. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
To ensure optimum performance of CHG Bearing 787/304RG2 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 304 mm bore. For the 454 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Model 787/304RG2 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 304 mm) and steep thermal gradients between inner and outer rings.
