This series of machine is applicable for turning the excircle, end surface, circular groove, inner bore as well as internal and external cones of axle, cylindrical and disc parts with different materials with the help of high speed steel or hard alloy cutters. It is also can perform the deep hole boring operation with the cutter disc and boring rod different diameters.
| Parameters | C91160 ×L/32 | C91200 ×L/40 | C91250 ×L/40 | C91250 ×L/63 |
| Type of lathe bed guideway | Integrated three guideways on lathe bed | Integrated three guideways on lathe bed | Integrated three guideways on lathe bed | Integrated three guideways on lathe bed |
| Max. swing diameter(mm) – On lathe bed | φ1600 | φ2000 | φ2500 | φ2500 |
| Max. swing diameter(mm) – On tool post | φ1250 | φ1600 | φ2000 | φ2000 |
| Max. workpiece length L(mm) | 5000 ~ 20000 | 5000 ~ 20000 | 5000 ~ 20000 | 5000 ~ 20000 |
| Max. workpiece weight (t) | 32 | 40 | 40 | 63 |
| Range of machining diameter (mm) | 0 ~ φ1250 | 0 ~ φ1600 | 0 ~ φ2000 | 0 ~ φ2000 |
| Dimension of spindle taper hole (mm) | φ120 1:7 | φ139.719 1:4 | – | φ140 1:7 |
| Max. faceplate torque (kN·m) | – | 80 | – | – |
| Cutting force of single tool post (kN) | – | 90 | – | 125 |
| Faceplate diameter (mm) | φ1600 | φ2000 | φ2500 | φ2500 |
| Steps and range of spindle rotational speed (r/min) | – | DC stepless 0.8 ~ 160 | – | DC stepless 0.625 ~ 125 |
| Tool post feed range (mm/min) – Longitudinal | – | 0.125 ~ 48 | – | – |
| Tool post feed range (mm/min) – Transverse | – | 0.0625 ~ 24 | – | – |
| Tool post fast movement (mm/min) – Longitudinal | – | – | 3000 | – |
| Tool post fast movement (mm/min) – Transverse | – | – | 1500 | – |
| Diameter range of boring hole (mm) | φ550 ~ φ1000 | φ600 ~ φ1000 | φ500 ~ φ1200 | φ500 ~ φ1600 |
| Max. torque of boring hole (kN·m) | – | 30 | 25 | 40 |
| Diameter of boring rod (mm) | – | φ310 | φ310 φ500 | – |
| Boring rod feed (mm/min) | – | – | 1 ~ 150 | – |
| Boring rod fast movement (mm/min) | – | – | 2000 | – |
