The Citizen Miyano BNJ-51SY is an industrial-grade Multi-Tasking & Mill-Turn Machines powered by the Fanuc 0i-TF. a top spindle speed of 0 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Citizen Miyano BNJ-51SY: two-spindle lathe for 51 mm bar, 12-station Y-axis upper turret and 8-station lower turret, 5,000 rpm, Fanuc 0i-TF.
| Standardized Parameters & Ratings | |
|---|---|
| Manufacturer (Brand) | Citizen (Japan) |
| Machine Type | Multi-Tasking & Mill-Turn Machines |
| CNC Controller System | Fanuc 0i-TF |
| Number of Controlled Axes | 3-Axis Simultaneous / Positioning |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 5,550 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Max Bar Capacity Sp1 | 51 mm (2.0 in) |
| Max Bar Capacity Sp2 | 42 mm (1.65 in) |
| Main Spindle Speed | 5,000 RPM |
| Main Spindle Power | 15/11 kW (20/15 hp) |
| Sub Spindle Speed | 5,000 RPM |
| Sub Spindle Power | 7.5/5.5 kW (10/7.5 hp) |
| Upper Turret Stations | 12 |
| Lower Turret Stations | 8 |
| Upper Turret Live Tool Speed | 6,000 RPM |
| Upper Turret Live Tool Power | 2.2 kW |
| Lower Turret Live Tool Speed | 6,000 RPM |
| Lower Turret Live Tool Power | 0.75 kW |
| Travel X1 | 168 mm (6.61 in) |
| Travel Z1 | 250 mm (9.84 in) |
| Travel X2 | 88 mm (3.46 in) |
| Travel Z2 | 650 mm (25.59 in) |
| Y Axis Travel | 80 mm (+/-40 mm) |
| Number Of Axes | 7 cutting axes |
| Distance Between Spindles | 825 mm |
| Machine Weight | 5,550 kg |
| Floor Space | 2,881 x 1,578 mm |
| CNC Control | Fanuc 0i-TF |
| Items | BNJ-51SY7 |
| Sp2 | H-S22、H-S20、DIN173E |
| Tr2 | MAX M12×1.75(S45C) |
| Z1 Axis | 250mm |
| Y Axis | ±40mm |
| Z2 Axis | 650mm |
| Sp2 Cs | 7.5/5.5kw (15 min/cont.) |
| Machine Body Dimensions | 2,881×1,578mm |
| Distance Between Spindle End Faces | 825mm |
| Standard Workpiece Collection Length | 120 mm |
| Standard Machining Diametersp1 Sp2 | 51 mm |
| Max Spindle Speed Sp1 Sp2 | 5,000 min-1 |
| Collet Chuck Typesp1 | H-S22、DIN177E、Hainbuch 51 |
| Collet Chuck Typesp2 | H-S22、H-S20、DIN173E |
| Power Chuck Type Sp1 Sp2 | 6"/5"hollow chuck |
| Type Of Tool Slidetr1 | 12st. |
| Type Of Tool Slidetr2 | 8st. |
| Revolving Tool Capacitytr1 | Max.12 |
| Revolving Tool Capacitytr2 | Max.8 |
| Rotational Speed Of Revolving Tools Tr1 Tr2 | 6,000min-1 |
| Max Drilling Diameter Tr1 Tr2 | MAX ø13mm |
| Max Tapping Diameter Tr1 Tr2 | MAX M12×1.75(S45C) |
| Turret Slide Stroke X1 Axis | 168mm |
| Turret Slide Stroke Z1 Axis | 250mm |
| Turret Slide Stroke Y Axis | ±40mm |
| Spindle Slide Stroke X2 Axis | 88mm |
| Spindle Slide Stroke Z2 Axis | 650mm |
| Motor For Spindle Sp1 Cs | 15/11kw (15 min/cont.) |
| Motor For Spindle Sp2 Cs | 7.5/5.5kw (15 min/cont.) |
| Machine Height | 1,775mm |
| Max Drilling Tr1 | 13 mm |
| Max Tapping Tr1 | M12 x 1.75 |
| Standard Collection Length | 120 mm |
Our best estimate for the Citizen Miyano BNJ-51SY is $250,000 - $360,000. This is an estimate for a mill-turn / multi-tasking machines in this class, not a quote from Citizen Machinery; configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/citizen-miyano-bnj51sy#price; the request is passed to Citizen Machinery or an authorised dealer.
No, it is not in Citizen's current lineup. Machines on offer will be used, so confirm the Fanuc 0i-TF control, spindle condition and the tooling and workholding that come with it before buying.
The upper turret has 12 stations, ±40 mm of Y and 2.2 kW rotary tools. The lower turret has 8 stations and 0.75 kW rotary tools. Both run their rotary tools at 6,000 rpm and drill to ø13 mm and tap to M12×1.75 in S45C.
The back spindle slide strokes 88 mm in X2 and 650 mm in Z2, and the distance between the spindle end faces is 825 mm. The back spindle runs to 5,000 rpm on a 7.5/5.5 kW (15 min/cont.) motor.
The main spindle takes H-S22, DIN177E and Hainbuch 51 collet chucks; the back spindle takes H-S22, H-S20 and DIN173E. Citizen also lists 6"/5" hollow power chucks for the two spindles.
The machine weighs 5,550 kg, needs a 2,881 x 1,578 mm footprint and is 1,775 mm high. Add room for the bar feeder and for opening the guards when planning the layout.
