The BNJ42/51SY CNC Fixed Head is a completely revamped version of one of Miyano’s best-selling twin-turret lathes.
Designed for stable, high-performance machining, this model delivers improved rigidity and thermal accuracy. Its reengineered casting structure increases tool life and cutting precision. The machine supports simultaneous 4-axis machining for fast, efficient production.
LFV Technology is now supported on both front and back machining axes. LFV breaks chips during cutting, preventing swarf build-up and reducing downtime.
This extends unmanned operation by keeping the tank and chip areas cleaner for longer. LFV is available on X1/Z1 axes (front) and X2/Z2 axes (rear) for full production flexibility.
The second turret shares tools with turret one, increasing the rotary tool capacity to 8 stations. Revolving tool torque has also been boosted to 25 Nm, handling tougher materials with ease.
The BNJ-42/51SY CNC Fixed Head combines precision, expanded machining range and chip control in one space-efficient package.
| Items | BNJ-42S6 | BNJ-42SY6 | BNJ-51SY6 | |
|---|---|---|---|---|
| Machining Capacity | ||||
| Standard Turning Length | SP1/SP2 | 100mm | ||
| Standard machining diameter | SP1/SP2 | ø42mm/ø42mm | ø51mm/ø42mm | |
| Slide Stroke | ||||
| Turret Slide Stroke | X1 axis | 165mm | ||
| Z1 axis | 246mm | |||
| Y axis | – | ±40mm | ||
| Spindle Slide Stroke | X2 axis | 70mm | ||
| Z2 axis | 525mm | |||
| Spindle | ||||
| Spindle Speed Range | SP1 | 60 – 6,000min-1 | 50 – 5,000min-1 | |
| SP2 | 50 – 5,000min-1 | |||
| Type of Collet Chuck | SP1 | H-S20, DIN173E | H-S22, DIN177E | |
| SP2 | JPN, H-S16, DIN171E | |||
| Type of Power Chuck | SP1/SP2 | 5″/5″ Hollow | 6″/5″ Hollow | |
| Turret | ||||
| Type of Turret | HD1 | 12st. | ||
| HD2 | 6st. | |||
| Revolving Tools(Opt.) | ||||
| Maximum Number of Revolving Tools | Max.12 | |||
| Spindle Speed Range | 60 – 6,000min-1 | |||
| Machining Capacity | drill | Max.ø13mm | ||
| tap | Max.M10×1.5(S45C-D) | |||
| Motors | ||||
| Spindle Motor | SP1 Cs | 15/11kw(30min./Cont.) | ||
| SP2 Cs | 7.5/5.5kw(30min./Cont.) | |||
| Machine Dimensions | ||||
| Machine Height | 1,720mm | |||
| Floor Space | 2,780×1,530mm(Without Chip Conveyor) | |||
| Machine Weight | 5,500 kg | |||
