| Item | Specification | Unit | BL-SK40S | BL-SK50S | BL-SK66Q |
| Capacity | Guideway width | mm | 390 |
| Max. swing dia. over bed | mm | Φ400 | Φ500 | Φ660 |
| Max. swing dia. over slide | mm | Φ200 | Φ280 | Φ440 |
| Max. turning dia. (vertical 4T/ horizontal 6T tool turret) | mm | Φ400/350 | Φ500/350 | Φ550/350 |
| Max. workpiece length (vertical 4T/ horizontal 6 T tool turret) | mm | 710/620; 960/870; 1460/1370; 1960/1870; 2960/2870 (for SK40S/50S) |
| Max turning length (vertical 4T/ horizontal 6 T tool turret) | mm | 570/500; 820/750; 1320/1250; 1820/1750; 2820/2750 (for SK40S/50S) |
| Max. workpiece weight | kg | 700 (10" manual chuck); 550 (8" hydraulic chuck); 700 (10" hydraulic chuck); |
| Spindle | Spindle bore | mm | Φ77 (opt.: 82, 105) |
| Spindle head type | / | ISO702/ⅠA2-8 (opt.: D8) |
| Spindle taper hole | / | Metric 1:20 |
| Spindle speed | rpm | 3 class gears H:162~1620; M:66~660; L:21~210 |
| Spindle motor | kw | 7.5 (servo) |
| Spindle max. output torque | Nm | 800 |
| Chuck size | / | 10" |
| X/Z axes | X axes travel (vertical 4T/ horizontal 6T tool turret) | mm | 275/235 |
| Z axes travel | mm | 600/ 850/ 1350/ 1850/ 2850 (for SK40S/50S) |
| X/Z axes rapid speed | m/min | 6/8 |
| X axes ball screw O.D./ pitch | mm | Φ25/5 |
| Z axes ball screw O.D./ pitch | mm | Φ40/6 (750, 1000, 1500mm); Φ50/6 (2000mm); Φ63/8 (3000mm) |
| Tool post | Tool turret type | / | Vertical 4/ Horizontal 6 station |
| Tool shank size | mm | 25×25 |
| Tailstock | Tailstock quill dia. | mm | Φ75 (hydraulic tailstock: Φ80) |
| Tailstock quill travel | mm | 150 (hydraulic tailstock: 130) |
| Tailstock quill taper | / | MT5# |
| Accuracy | X/Z axes positioning accuracy | mm | 0.026/0.032 (750mm), 0.036 (1000mm), 0.040 (1500, 2000, 3000mm) |
| X/Z axes repeatability positioning accuracy | mm | 0.007/0.009 (750mm), 0.011 (1000mm), 0.014 (1500/ 2000/ 3000mm) |
| Turning workpiece roundness | mm | 0.004 |
| Others | N.W. | kg | 2050/ 2100/ 2150/ 2200/ 3500 | 2150/ 2200/ 2250/ 2300 |
| Overall size (L×W×H) | mm | 2450/ 2700/ 3200/ 3700/ 4700×1500×1700 | 2450/ 2700/ 3200/ 3700×1500×1700 |