Manufactured by CHG Bearing, the 171.20.0644.00.00.10 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 572 mm bore diameter, a 744 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.
171.20.0644.00.00.10 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 171.20.0644.00.00.10 |
| 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) | 572 mm |
| Width (B) | 56 mm |
| Outer Diameter (D) | 744 mm |
| Number of Lubrication Holes n1 | 4 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 685 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 598 mm |
| Lubrication Port Thread / Size Φ1 | 8 |
| Inner Ring Mounting Hole Count n2 | 36 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 13.5 |
| Outer Ring Mounting Hole Count n3 | 32 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 12 |
| Gear Data | |
| Gear Module m | 6 mm |
| Gear Tip Diameter De | 732 mm |
| Number of Gear Teeth z | 122 |
| Gear Face Width b | 45.5 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 52.8 kg |
171.20.0644.00.00.10 744 mm 685 mm 572 mm 56 mm 598 mm Frequently Asked Questions about 171.20.0644.00.00.10 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 171.20.0644.00.00.10 with a precision bore diameter (d) of 572 mm, an outside diameter (D) of 744 mm, and a nominal ring width (B) of 56 mm. This configuration yields an effective cross-sectional wall thickness of 86.0 mm and an envelope ratio (D/d) of 1.3, delivering compact rigidity for OEM machinery housings.
Quality starts with raw material selection: CHG Bearing crafts 171.20.0644.00.00.10 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.
Every production batch of CHG Bearing 171.20.0644.00.00.10 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.
When fitting 171.20.0644.00.00.10 over a 572 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.
