| Specification | CE1221 | CE1221K | CE6636 | 
| Max swing over bed | 840mm | 840mm | 1000mm | 
| Max outer diameter of pipe | 210mm | 210mm |  | 
| Max swing over carriage | 560mm | 560mm | 640mm | 
| Max. length of work piece(mm) | 1500/3000/4000 /5000/6000
 | 750/1500 | 1500/2000/ 3000/4000/5000
 | 
| Mar turning length(mm) | 1350/2850/3850 /4850/5850
 | 600/1350 |  | 
| Diameter of spindle through hole | 210mm | 210mm | 360mm | 
| Range of spindle speed | 12 steps (45-572r/min)
 |  | 6.3to 315 r..p.m. with 18 steps
 | 
| Kind of metric thread and pitch range | 22 kinds 1 to 15mm
 | 0.1-500mm | 56 kinds 1 to 120mm
 | 
| Kind of inch thread and range | 28 kinds 15 to 1 T.P.I
 | 37 kinds 30-1.125 teeth/in
 | 
| Kind of modular thread and range | 21 kinds 0.5 to 7.5 π m
 | 46 kinds 0.5 to 60mm | 
| Kind of radial thread and range | 20 kinds 28 to 2 D.P | 46kinds 0.5 to 60 D.P | 
| Max travel of tool post | 240mm |  | 300mm | 
| Max travel of cross slide | 500mm |  | 520mm | 
| Diameter of tailstock sleeve | 100mm |  | 160mm | 
| Travel of tailstock sleeve | 300mm | 300mm | 300mm | 
| Main motor power | 9/11kw | 11kw | 22 kw | 
| Net weight(kg) | 4300/5000/5800 /6500/7200
 | 4300/4700 | 9350/9850/10850/ 11750/12650
 | 
| Overall size | 3515/5015/6160 /7160/8160x
 1395x1650mm
 | 2950/3650x 1395x1700mm
 | 4600/5100/6100 /7100/ 8100/9100x
 1980x1790mm
 |