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| Specification | Unit | BL-500B | BL-660B | 
| Max. swing over bed | mm | 500 | 660 | 
| Max. swing over cross slide | mm | 300 | 420 | 
| Max. swing over gap | mm | 710 | 870 | 
| Gap length | mm | 240 | 240 | 
| Distance between centers | mm | 750/1000/1500/2000/3000 | 750/1000/1500/2000/3000 | 
| Max. turning length | mm | 700/950/1450/1950/2950 | 700/950/1450/1950/2950 | 
| Spindle bore | mm | Φ82 | Φ82 | 
| Spindle taper | - | Φ90, 1:20 | Φ90, 1:20 | 
| Spindle nose | - | ISO 702/II No.8 | ISO 702/II No.8 | 
| Spindle speed range (steps) | rpm | 9-1600 (24) | 9-1600 (24) | 
| Top slide travel | mm | 145 | 145 | 
| Cross slide travel | mm | 320 | 310 | 
| Tool section size | mm | 25x25 | 25x25 | 
| X-axis rapid feed speed | m/min | 50HZ: 1.9; 60HZ: 2.3 | 50HZ: 1.9; 60HZ: 2.3 | 
| Z-axis rapid feed speed | m/min | 50HZ: 4.5; 60HZ: 5.4 | 50HZ: 4.5; 60HZ: 5.4 | 
| X-axis feed range | mm/r | 0.012-2.73 (93) | 0.012-2.73 (93) | 
| Z-axis feed range | mm/r | 0.028-6.43 (93) | 0.028-6.43 (93) | 
| Metric threads range (kinds) | mm | 0.5-224 (48) | 0.5-224 (48) | 
| Inch threads range (kinds) | TPI | 72-1/8 (46) | 72-1/8 (46) | 
| Module threads range (kinds) | MP | 0.5-112 (42) | 0.5-112 (42) | 
| Diametrical threads range (kinds) | DP | 56-1/4 (45) | 56-1/4 (45) | 
| Tailstock quill diameter | mm | Φ75 | Φ75 | 
| Tailstock quill travel | mm | 150 | 150 | 
| Tailstock quill taper | - | MT5 | MT5 | 
| Main motor power | kw | 7.5 | 7.5 | 
| Rapid feed motor power | kw | 0.3 | 0.3 | 
| Coolant pump motor power | kw | 0.12 | 0.12 | 
| Machine length | mm | 2382/2632/3132/3632/4632 | 2382/2632/3132/3632/4632 | 
| Machine width | mm | 975 | 975 | 
| Machine height | mm | 1230 | 1270 | 
| Machine weight | kg | 2050/2100/2300/2500/2900 | 2150/2200/2400/2600/3000 | 



