Manufactured by CHG Bearing, the 013.20.310.12 is a precision Four-Point Contact Ball Slewing Bearings. Key dimensional parameters include a 235 mm bore diameter, a 380 mm outer diameter, and a 54 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.
013.20.310.12 - Four-Point Contact Ball Slewing Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 013.20.310.12 |
| Brand | CHG® |
| Gear Type | Internal Gear |
| Characteristics | |
| Bearing Type | Single-row Four-point Contact Ball Slewing Bearing |
| Row Configuration | Single-row |
| Dimensions | |
| Bore Diameter (d) | 235 mm |
| Width (B) | 54 mm |
| Outer Diameter (D) | 380 mm |
| Number of Lubrication Holes n1 | 1 |
| Mounting Dimensions | |
| Outer Ring Mounting Hole P.C.D. D1 | 358 mm |
| Inner Ring Mounting Hole P.C.D. D2 | 259 mm |
| Lubrication Port Thread / Size Φ1 | 10 |
| Inner Ring Mounting Hole Count n2 | 12 |
| Inner Ring Mounting Hole Specification Φ2 (Ø / Thread) | 12 |
| Outer Ring Mounting Hole Count n3 | 12 |
| Outer Ring Mounting Hole Specification Φ3 (Ø / Thread) | 12 |
| Gear Data | |
| Gear Module m | 4 mm |
| Gear Tip Diameter De | 216 mm |
| Number of Gear Teeth z | 56 |
| Gear Face Width b | 39 mm |
| Addendum Modification Coefficient x | 0 |
| Reference Data | |
| Reference Mass (kg) | 25.6 kg |
013.20.310.12 380 mm 235 mm 358 mm 259 mm 54 mm Frequently Asked Questions about 013.20.310.12 Four-Point Contact Ball Slewing Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To ensure optimum performance of CHG Bearing 013.20.310.12 Four-Point Contact Ball Slewing Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 235 mm bore. For the 380 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
To match diverse operational dynamics, CHG Bearing supplies 013.20.310.12 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
As standard production, CHG Bearing subjects 013.20.310.12 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
Quality starts with raw material selection: CHG Bearing crafts 013.20.310.12 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.
