Manufactured by CHG Bearing, the D78790 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 450 mm bore diameter, a 600 mm outer diameter, and a 45 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.
D78790 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | D78790 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 450 mm |
| Width (B) | 45 mm |
| Outer Diameter (D) | 600 mm |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 576 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 482 mm |
| Inner Ring Mounting Hole Count n2 | 16 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 12 |
| Outer Ring Mounting Hole Count n3 | 16 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 12 |
| Reference Data | |
| Reference Mass (kg) | 39.5 kg |
D78790 600 mm 450 mm 45 mm 482 mm 576 mm Frequently Asked Questions about D78790 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting D78790 over a 450 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
The Open Type engineered for D78790 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
For international ocean and air freight, CHG Bearing packs D78790 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.
Every production batch of CHG Bearing D78790 Four-Point Contact Ball Slewing Bearings comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
