Manufactured by CHG Bearing, the 9220-3385 is a precision Three-row Cylindrical Roller Slewing Bearings. Key dimensional parameters include a 2918 mm bore diameter, a 3385 mm outer diameter, and a 185 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.
9220-3385 - Three-row Cylindrical Roller Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 9220-3385 |
| Brand | CHG® |
| Gear Type | Gearless |
| Characteristics | |
| Bearing Type | Three-row Cylindrical Roller Slewing Bearing |
| Row Configuration | Three-row |
| Dimensions | |
| Bore Diameter (d) | 2918 mm |
| Width (B) | 185 mm |
| Outer Diameter (D) | 3385 mm |
| Inner/Outer Ring Height H1 | 219 mm |
| End-face Height Difference h | 54 mm |
| Number of Lubrication Holes n1 | 5 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 2655 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 2345 mm |
| Lubrication Port Thread / Size Φ1 | ZG1/4 |
| Inner Ring Mounting Hole Count n2 | 72 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 33 |
| Outer Ring Mounting Hole Count n3 | 72 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 33 |
| Reference Data | |
| Reference Mass (kg) | 2310 kg |
9220-3385 2345 mm 2918 mm 2655 mm 3385 mm 185 mm Frequently Asked Questions about 9220-3385 Three-row Cylindrical Roller Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To extend the trouble-free lifespan of CHG Bearing 9220-3385, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Quality starts with raw material selection: CHG Bearing crafts 9220-3385 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
In its sealed configuration (Open Type), CHG Bearing pre-charges 9220-3385 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
The CHG Bearing 9220-3385 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
