Manufactured by CHG Bearing, the 011.15.256.03 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 190 mm bore diameter, a 347.5 mm outer diameter, and a 55 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.
011.15.256.03 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 011.15.256.03 |
| 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) | 190 mm |
| Width (B) | 55 mm |
| Outer Diameter (D) | 347.5 mm |
| Number of Lubrication Holes n1 | 1 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 300 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 210 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 10 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 10 |
| Outer Ring Mounting Hole Count n3 | 10 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 10 |
| Gear Data | |
| Gear Module m | 2.5 mm |
| Gear Tip Diameter De | 342.5 mm |
| Number of Gear Teeth z | 137 |
| Gear Face Width b | 30 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 16.7 kg |
011.15.256.03 347.5 mm 300 mm 190 mm 55 mm 210 mm Frequently Asked Questions about 011.15.256.03 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting 011.15.256.03 over a 190 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.
Quality starts with raw material selection: CHG Bearing crafts 011.15.256.03 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.
Model 011.15.256.03 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 190 mm) and steep thermal gradients between inner and outer rings.
Yes, 100% of 011.15.256.03 Four-Point Contact Ball 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.
