Manufactured by CHG Bearing, the 011.20.745.03 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 635 mm bore diameter, a mm outer diameter, and a 56.2 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.
011.20.745.03 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 011.20.745.03 |
| Brand | CHG® |
| Gear Type | External Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 635 mm |
| Width (B) | 56.2 mm |
| Number of Lubrication Holes n1 | 4 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 785 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 660 mm |
| Lubrication Port Thread / Size Φ1 | 6 |
| Inner Ring Mounting Hole Count n2 | 16 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 18 |
| Outer Ring Mounting Hole Count n3 | 18 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 12 |
| Gear Data | |
| Gear Module m | 6 mm |
| Gear Tip Diameter De | 837.6 mm |
| Number of Gear Teeth z | 138 |
| Gear Face Width b | 46 mm |
| Addendum Modification Coefficient x | -0.2 |
| Reference Data | |
| Reference Mass (kg) | 55.5 kg |
011.20.745.03 mm 785 mm 635 mm 56.2 mm 660 mm Frequently Asked Questions about 011.20.745.03 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 011.20.745.03 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (635 mm x mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To extend the trouble-free lifespan of CHG Bearing 011.20.745.03, 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.
Each 011.20.745.03 produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (635 mm bore side) ensures perfect planar contact without edge binding.
For international ocean and air freight, CHG Bearing packs 011.20.745.03 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.
