The BML-600LT is a long-bed box way CNC turning center with sub-spindle, built for a specific problem: long parts that need machining on both ends. Without a sub-spindle, that means re-clamping a long, heavy workpiece, with more alignment risk than almost any other part type. On the BML-600LT, the 6-inch sub-spindle takes the part from the main spindle and finishes the back end in the same cycle, up to about 1,210 mm of machining length on the 10-inch main chuck.
The box way is hand-scraped along the full extended bed. For high length-to-diameter parts, the steady rest is configured for your workpiece before the machine ships, and the main-to-sub transfer is proven on your part at our factory. C-axis and live tooling are optional.
Within the box way sub-spindle family, the BML-600T covers parts to about 475 mm, the BML-600MT to about 710 mm, and the BML-600LT reaches about 1,210 mm for genuinely long work.
Long parts that also carry off-center features? The BML-600LTY adds Y-axis with live tooling standard. For long-part turning without back-end machining, the BML-600L keeps the full 1,280 mm envelope. See also our guide: Long-Bed CNC Turning Centers.
A: Up to 1,210 mm with the standard 10-inch main chuck (1,190 mm with the optional 12-inch). The sub-spindle carries a 6-inch chuck with a Φ56 mm bore, running up to 6,000 rpm.
A: When the long part needs machining on both ends. The LT trades about 70 mm of machining length for the sub-spindle, finishing back faces, threads, and bores in the same cycle instead of a risky second setup.
A: Yes. For high length-to-diameter workpieces, the steady rest arrangement is configured and tested for your part before the machine ships.
| ITEM | UNIT | BML-600LT |
|---|---|---|
| Capacity | ||
| Swing over bed | mm | Φ600 |
| Swing over saddle | mm | Φ450 |
| Maximum machining diameter | mm | Φ420 |
| Maximum machining length | mm | STD: 1,210 (10″); OPT: 1,190 (12″) |
| Slant angle of bed | ° | 30° |
| Travel Range | ||
| X-axis | mm | 230 (210+20) |
| Y-axis | mm | – |
| Z-axis | mm | 1,330 |
| C-axis | – | – |
| W-axis (sub-spindle) | mm | 1,186 |
| Spindle | ||
| Spindle speeds (main) | rpm | STD: 50~3,500 (A2-8, 75 mm, 10″); OPT: 50~3,000 (A2-8, 78 mm, 10″); OPT: 50~2,500 (A2-8, 91 mm, 12″) |
| Spindle speeds (sub) | rpm | 50~6,000 (6″) |
| Spindle nose | – | STD: A2-8 |
| Spindle bore diameter | mm | STD: Φ86 (10″); OPT: Φ91 (10″), Φ105 (12″) |
| Front bearing inner diameter | mm | STD: Φ120 (10″); OPT: Φ130 (10″, 12″) |
| Draw bar diameter | mm | STD: Φ75 (10″); OPT: Φ78 (10″), Φ91 (12″) |
| Chuck | ||
| Chuck diameter | inch | STD: 10″ + 6″ (W); OPT: 12″ + 6″ (W) |
| Turret | ||
| Type | – | STD: Hydraulic; OPT: Servo |
| Stations | pcs | STD: 10; OPT: 12 |
| Model | – | STD: LS-240; OPT: LS-240SV |
| Square tool shank | mm | 25 x 25 |
| Boring bar shank diameter | mm | Φ40 |
| Indexing time (0~180°) | sec | LS-240: 1.4 (10T), 1.5 (12T); LS-240SV: 0.7 (12T) |
| Live Tool | ||
| Spindle speeds | rpm | – |
| Feed Rate | ||
| Rapid traverse | m/min | X: 16, Z: 20, W: 16, C: 200 rpm |
| Tailstock | ||
| Type | – | – |
| Motors | ||
| Main-spindle | kW | STD: α30ip (15/18.5); OPT: α22ip (11/15) |
| Sub-spindle | kW | α6 (5.5/7.5) |
| Live-tool | kW | – |
| Axis servo motor | kW | X/Z/W – α12 (3.0) |
| Hydraulic oil pump | kW | 1.5 |
| Chip conveyor | kW | 0.2 |
| Coolant pump | kW | 0.8 |
| Accuracy | ||
| Positioning | mm | ±0.005 |
| Repeatability | mm | ±0.004 |
| Power | ||
| Requirements | KVA | 380-415 / 220V, 30 KVA |
| Machine Size | ||
| Height | cm | 186 |
| Floor space (L x W) | cm | 524 x 214 |
| Packing (w/ conveyor) | cm | 521 x 229 x 221 |
| Net weight (w/ conveyor) | kg | 7,560 |
| Gross weight (w/ conveyor) | kg | 8,020 |
If you’re an agent or owner of our machines, request access so you can access manuals and error codes here
