Manufactured by CHG Bearing, the 2797/3780G2 is a precision Crossed Roller Slewing Bearings. Key dimensional parameters include a 3780 mm bore diameter, a 4500 mm outer diameter, and a 260 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.
2797/3780G2 - Crossed Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 2797/3780G2 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Crossed Roller Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 3780 mm |
| Width (B) | 260 mm |
| Outer Diameter (D) | 4500 mm |
| Inner/Outer Ring Height H1 | 238 mm |
| End-face Height Difference h | 32 mm |
| Number of Lubrication Holes n1 | 12 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 4400 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 3900 mm |
| Lubrication Port Thread / Size Φ1 | 16 |
| Inner Ring Mounting Hole Count n2 | 64 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 40 |
| Outer Ring Mounting Hole Count n3 | 64 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 40 |
| Gear Data | |
| Gear Module m | 22 mm |
| Gear Tip Diameter De | 3668.24 mm |
| Number of Gear Teeth z | 168 |
| Gear Face Width b | 190 mm |
| Addendum Modification Coefficient x | 0.35 |
| Reference Data | |
| Reference Mass (kg) | 8346 kg |
2797/3780G2 4500 mm 3780 mm 260 mm 4400 mm 3900 mm Frequently Asked Questions about 2797/3780G2 Crossed Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting 2797/3780G2 over a 3780 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.
Yes, 100% of 2797/3780G2 Crossed Roller Slewing Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
The Open Type engineered for 2797/3780G2 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.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 2797/3780G2. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
