The Citizen Miyano BNJ-51 is an industrial-grade CNC Lathes & Turning Centers powered by the Mitsubishi M80W dual-path. a top spindle speed of 0 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Miyano BNJ-51: 51 mm bar, 15/11 kW main spindle, 12-station upper and 8-station lower turret, M80W dual-path control, 5,300 kg.
| Standardized Parameters & Ratings | |
|---|---|
| Manufacturer (Brand) | Citizen (Japan) |
| Machine Type | CNC Lathes & Turning Centers |
| CNC Controller System | Mitsubishi M80W dual-path |
| Number of Controlled Axes | 3-Axis Simultaneous / Positioning |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 5,300 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Max Bar Capacity Sp1 | 51 mm (2.0 in) |
| Max Bar Capacity Sp2 | 51 mm (2.0 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 |
| Lower Turret Live Tool Speed | 3,000 RPM |
| Max Drilling Hd1 | 13 mm |
| Max Drilling Hd2 | 10 mm |
| Travel X1 | 165 mm (6.50 in) |
| Travel Z1 | 246 mm (9.69 in) |
| Travel X2 | 85 mm (3.35 in) |
| Travel Z2 | 590 mm (23.23 in) |
| Machine Weight | 5,300 kg |
| Floor Space | 2,840×1,560mm(Without Chip Conveyor) |
| Machine Height | 1,700 mm |
| CNC Control | Mitsubishi M80W dual-path |
| Items | BNJ-42S6 |
| Spindle | Spindle Speed Range |
| Sp2 | JPN, H-S16, DIN171E |
| Hd2 | M10×1.0 |
| Revolving Tools | Maximum Number of Revolving Tools |
| Spindle Speed Range | HD1 |
| Maximum Drilling Diameter | HD1 |
| Maximum Tapping Diameter | HD1 |
| Slide Stroke | Turret Slide Stroke |
| Z1 Axis | 246mm |
| Z2 Axis | 590mm |
| Motors | Spindle Motor |
| Sp2 Cs | 7.5/5.5kw(15min./Cont.) |
| Standard Turning Length Sp1 Sp2 | 100mm |
| Standard Machining Diameter Sp1 Sp2 | 51mm Dia./42mm Dia. |
| Spindle Speed Range Sp1 | 50 - 5,000min-1 |
| Spindle Speed Range Sp2 | 50 - 5,000min-1 |
| Type Of Collet Chuck Sp1 | H-S22, DIN177E |
| Type Of Collet Chuck Sp2 | JPN, H-S16, DIN171E |
| Type Of Power Chuck Sp1 Sp2 | 6"/5" Hollow |
| Type Of Turret Hd1 | 12st. |
| Type Of Turret Hd2 | 8st. |
| Maximum Number Of Revolving Tools Hd1 | Max.12 |
| Maximum Number Of Revolving Tools Hd2 | Max.4 |
| Spindle Speed Range Hd1 | 6,000min-1 |
| Maximum Drilling Diameterhd1 | 13mm Dia. |
| Maximum Drilling Diameterhd2 | 10mm Dia. |
| Maximum Tapping Diameter Hd1 | M12×1.75 |
| Maximum Tapping Diameter Hd2 | M10×1.0 |
| Turret Slide Stroke X1 Axis | 165mm |
| Turret Slide Stroke Z1 Axis | 246mm |
| Spindle Slide Stroke X2 Axis | 85mm |
| Spindle Slide Stroke Z2 Axis | 590mm |
| Spindle Motor Sp1 Cs | 15/11kw(15min./Cont.) |
| Spindle Motor Sp2 Cs | 7.5/5.5kw(15min./Cont.) |
| Spindle Speed Range Hd2 | 3,000min-1 |
| Maximum Drilling Diameter Hd1 | 13mm Dia. |
| Turret Slide Stroke Y Axis | ±40mm |
| Maximum Drilling Diameter Hd2 | 10mm Dia. |
| Max Bar Capacity | 51 mm (2.0 in) |
| Max Turning Diameter | 250 mm (9.84 in) chuck work |
| Max Turning Length | 130 mm (5.12 in) |
| Live Tool Speed | 6,000 RPM |
| Spindle Motor | 11 kW (15 hp) |
| Number Of Axes | 8 (X1, Z1, Y1, X2, Z2, Y2 + C1, C2) |
| Turret Positions | 24 (12 upper + 12 lower) |
| Rapid Traverse X | 20 m/min |
| Rapid Traverse Z | 24 m/min |
Our best estimate for the Citizen Miyano BNJ-51 is $250,000 - $350,000. This is an estimate for a cnc lathes / turning centers 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-bnj-51#price; the request is passed to Citizen Machinery or an authorised dealer.
Up to 12 on the upper 12-station turret, running to 6,000 RPM, and up to 4 on the lower 8-station turret, running to 3,000 RPM. Plan back-side milling and cross drilling around those 4 lower positions and their 10 mm drilling and M10×1.0 tapping limits.
The Miyano BNJ-51 weighs 5,300 kg and runs a Mitsubishi M80W dual-path control. The Miyano BNE-51 weighs 7,800kg and is listed with a Mitsubishi M80. Both are listed for chuck work to 250 mm (9.84 in), revolving tools to 6,000 RPM and rapids of 20 m/min on X and 24 m/min on Z.
The main spindle is rated 15/11 kW (20/15 hp) and the sub spindle 7.5/5.5 kW (10/7.5 hp), both given as 15min./Cont. ratings. Both turn to 5,000 RPM, so the difference is power for roughing rather than speed.
The turret slide moves 165 mm on X1 and 246 mm on Z1 with a Y stroke of ±40mm. The spindle slide moves 85 mm on X2 and 590 mm on Z2. Rapid traverse is 20 m/min on X and 24 m/min on Z.
