This series of machine is applicable for rough and finish machining the internal and external cylindrical surfaces, internal and external conical surface, end surface, circular groove of large axle parts (or cylindrical parts) which the materials are cast iron, cast steel, forged steel and non-ferrous metals with the help of high speed steel or hard alloy cutters, as well as turning the metric and British system and module threads on the overall length which used in heavy-duty machinery, power generation equipment, shipbuilding, metallurgy, papermaking and other industries.
| Parameters | CK61250 | CK61315 | CK61350 | CK61450 |
| Type of lathe bed guideway | Separate lathe bed Hydrostatic guideway | Separate lathe bed Hydrostatic guideway | Separate lathe bed Hydrostatic guideway | Separate lathe bed Hydrostatic guideway |
| Max. swing diameter (mm) On lathe bed | φ 2500 | φ 3150 | φ 3500 | φ 4500 |
| On tool post | φ 2000 | φ 2500 | φ 3000 | φ 4000 |
| Max. workpiece length L (mm) | 8000 ~ 24000 | 8000 ~ 24000 | 8000 ~ 24000 | 8000 ~ 24000 |
| Max. workpiece weight (t) | 100 | 160 | 250 | 350 |
| Range of machining diameter (mm) | 0 ~ φ 2000 | 0 ~ φ 2500 | 0 ~ φ 3000 | 0 ~ φ 4000 |
| Dimension of spindle taper hole (mm) | φ 196.869 1:4 | φ 285.775 1:4 | φ 285.775 1:4 | φ 412.775 1:4 |
| Max. faceplate torque (kN • m) | 160 | 200 | 250 | 300 |
| Cutting force of single tool post (kN) | 160 | 160 | 200 | 200 |
| Faceplate diameter (mm) | φ 2500 | φ 3150 | φ 3150 | φ 4000 |
| Steps and range of spindle rotational speed Step Range (r/min) | DC stepless 0.5 ~ 100 | DC stepless 0.4 ~ 80 | DC stepless 0.315 ~ 63 | DC stepless 0.4 ~ 70 |
| Tool post feed range (mm/min) Longitudinal Transverse | 1 ~ 300 1 ~ 300 | 0.1 ~ 600 0.1 ~ 400 | 0.1 ~ 600 0.1 ~ 400 | 0.2 ~ 500 0.2 ~ 500 |
| Tool post fast movement (mm/min) Longitudinal Transverse | 6000 4000 | 6000 4000 | 3000 1500 | 3000 1500 |
| Power of main motor (kW) | 144 | 166 | 180 | 315 |
