BNJ51SY

Advanced Y-Axis Machining for Complex Parts

Machine Information

Miyano BNJ51SY

The BNJ51SY builds on the solid foundation of the BNJ series, adding a Y-axis to the main turret for enhanced machining flexibility.

This feature makes the BNJ51SY particularly suitable for multi-feature parts where off-center drilling, milling, or grooving is required—all in a single setup.

Ideal for automotive, aerospace, hydraulics, and instrumentation industries in India, the machine supports up to 51 mm bar diameter, making it versatile for mid-sized parts. The dual-turret, dual-spindle configuration allows simultaneous front and back machining, reducing cycle time and improving productivity.

The 12-station turrets allow a wide range of tools, including rotary tools for live operations. The Y-axis, with ±35 mm travel, brings added freedom for angular and offset cuts—reducing reliance on secondary machining processes and improving overall part accuracy.

Built with box-way construction and a strong mechanical base, the BNJ51SY handles demanding materials while maintaining tight tolerances. Its user-friendly programming and robust FANUC control interface help Indian operators transition from basic to complex operations with ease.

If you’re looking for a highly capable turning center that can handle complex geometries without extra setups, the BNJ51SY is a reliable, future-ready addition to your machine shop.

Functions

Standard NC functions

10.4″color LCD
No of registered programs: 800
Decimal point input
Manual pulse generator
Memory protect
Polar coordinate interpolation
Programmable data input (G10)
C-axis control (SP1/SP2)
Superimposed control A
Chamfering/ Corner R
Tool nose R compensation
Background editing
Synchronous mixed control
Operating time/ Parts No. display
Multiple repetitive canned cycle (G70-G76)
Continuous threading
Canned cycle for drilling
Tool life management system
Variable-lead cutting
Rigid tap function (Spindle & Revolving tool)
Circular interpolation
Custom macro
Handle retrace function
Polygon cutting
Synchronized function
Dual check safety
Network I/O function
Reference position setting
Helical interpolation, RS-232C

Functions

Other functions

Splash guard interlock
Coolant
Pneumatic unit
Machine light
Non-fuse breaker
SP2 Work ejector & inner high pressure coolant
Chuck close confirmation
Total & preset counter (Custom menu)
Cut-off confirmation
High pressure coolant
Revolving tool (HD2)
Spindle brake
Air blow
Parts catcher & Parts conveyor
Chip conveyor
Coolant level switch
Bar feeder interface
Signal tower
Automatic power shut-off
Thermo revision

Accessories

Optional Accessories

Drill breakage detector
Chip box
Tool holder, tools, etc.

Specifications

Machine Specifications

Items			BNJ-51SY7
Machining Capacity	Distance between spindle end faces		825 mm
	Standard workpiece collection length		120 mm
	Standard machining diameter	SP1	51 mm
	Standard machining diameter	SP2	51 mm
Spindle	Max. spindle speed	SP1	5,000 min-1
	Max. spindle speed	SP2	5,000 min-1
	Collet chuck type	SP1	H-S22, DIN177E, Hainbuch 51
	Collet chuck type	SP2	H-S22, H-S20, DIN173E
	Power chuck type	SP1/SP2	6″/5″ hollow chuck
Tool slide	Type of tool slide	TR1	12st.
Tool slide	Type of tool slide	TR2	8st.
Revolving Tool	Revolving tool capacity	TR1	Max.12
	Revolving tool capacity	TR2	Max.8
	Rotational speed of revolving tools	TR1	6,000 min-1
	Rotational speed of revolving tools	TR2	6,000 min-1
	Max. drilling diameter	TR1	MAX ø13mm
	Max. drilling diameter	TR2	MAX ø13mm
	Max. tapping diameter	TR1	MAX M12×1.75 (S45C)
	Max. tapping diameter	TR2	MAX M12×1.75 (S45C)
Slide stroke	Turret slide stroke	X1 axis	168 mm
		Z1 axis	250 mm
		Y axis	±40 mm
	Spindle slide stroke	X2 axis	88 mm
	Spindle slide stroke	Z2 axis	650 mm
Motor	Motor for spindle	SP1 Cs	15/11 kw (15 min/cont.)
Motor	Motor for spindle	SP2 Cs	7.5/5.5 kw (15 min/cont.)
Machine size	Machine height		1,775 mm
	Machine body dimensions		2,881 × 1,578 mm
	Machine Weight		5,550 kg