Citizen Miyano BNE-42
This model was not found in Citizen Machinery's current lineup when we checked on 2026-10-03 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.
Image: cmj.citizen.co.jp, Citizen Machinery
Key Specifications
Max Turn Length
max bar capacity
max turning diameter
main spindle speed
sub spindle speed
live tool speed
How much does the Citizen Miyano BNE-42 cost?
Estimated price range
Our best estimate for a cnc lathes / turning center in this class — not a quote from Citizen Machinery. Configuration moves it a long way.
Overview
The Miyano BNE-42 is a fixed-headstock lathe with two spindles and two 12-station turrets, both of which take revolving tools (12+12), plus a Y axis on the first turret and a second spindle that travels 450mm on its R axis. Citizen's current lineup does not include the BNE-42, so it is usually bought used.
The twin-turret layout is the point of this machine. Turret HD1 has a ±40mm Y stroke and 380mm of Z1 travel; turret HD2 has a 175mm stroke. Because the back-side operations have a turret of their own, they do not have to share stations with the front-side tools, and a part that needs many tools is less likely to run out of positions. Revolving tools run to 6,000 RPM.
Workholding is hydraulic, 6" on the main spindle and 5" on the second spindle, and chuck work is listed to 200 mm (7.87 in) in diameter. The second spindle takes bar work to 42mm Dia. and is driven by a 5.5/3.7kW motor, which is enough for facing, drilling and finishing the cut-off end but not for heavy stock removal. Square turning tools take a 20mm Sq. shank and the tool holes are 25mm Dia.
Rapid traverse is 20 m/min on X and 24 m/min on Z. The BNE-42 weighs 7,800kg, stands 1,925mm tall and needs 2,690×2,160mm of floor, and it runs a Mitsubishi M80 control. Against the Miyano BNJ-42, which is listed at 5,300 kg with a Mitsubishi M80W dual-path control, it is the heavier machine of the two.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 42 mm (1.65 in) |
| Max Turning Diameter | 200 mm (7.87 in) chuck work |
| Max Turning Length | 100 mm (3.94 in) |
| Main Spindle Speed | 6,000 RPM |
| Sub Spindle Speed | 6,000 RPM |
| Live Tool Speed | 6,000 RPM |
| Spindle Motor | 7.5 kW (10 hp) |
| Number of Axes | 5 (X1, Z1, Y1, X2, Z2) |
| Turret Positions | 12 (with live tooling) |
| Rapid Traverse X | 20 m/min |
| Rapid Traverse Z | 24 m/min |
| Machine Weight | 7,800kg |
| CNC Control | Mitsubishi M80 (Citizen Miyano) |
| Items | BNE-42S6 |
| Sp2 | 5.5/3.7kW |
| Type of Turret | HD1 |
| Slide Stroke | HD1 |
| Z1 Axis | 380mm |
| Z2 Axis | 175mm |
| R Spindle Travel | 450mm |
| Shank Height of Square Turning Tool | 20mm Sq. |
| Tool Hole Diameter | 25mm Dia. |
| Maximum Number of Revolving Tools | 12+12 |
| Machine Height | 1,925mm |
| Floor Space | 2,690×2,160mm |
| Power Chuck Sp1 Sp2 | 6"/5" hydraulic drive |
| Maximum Machining Diameter of Bar Work Sp1 | 51mm Dia. |
| Maximum Machining Diameter of Bar Work Sp2 | 42mm Dia. |
| Standard Turning Length Sp1 | 90mm |
| Type of Turret Hd1 | 12St.Turret |
| Type of Turret Hd2 | 12St.Turret |
| Slide Stroke Hd1 | ±40mm |
| Slide Stroke Hd2 | 175mm |
| Main Spindle Speed Range Sp1 | 5,000min-1 |
| Main Spindle Speed Range Sp2 | 5,000min-1 |
| Spindle Motor Sp1 | 15/11kW |
| Spindle Motor Sp2 | 5.5/3.7kW |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- Two 12-station turrets, both able to carry revolving tools (12+12)
- Y axis on turret HD1 with a ±40mm stroke and 380mm of Z1
- Second spindle travels 450mm on its R axis and takes bar work to 42mm Dia.
- Revolving tools run to 6,000 RPM
- Chuck work to 200 mm (7.87 in) in diameter with a 6" hydraulic chuck on the main spindle
Limitations
- The axis list has a Y axis only on the first turret, so off-centre work at the second spindle is limited
- The second spindle's 5.5/3.7kW motor keeps back-side cuts light
- 7,800kg and 2,690×2,160mm of floor, against 5,300 kg for the Miyano BNJ-42
Best For
Frequently Asked Questions
01
The Miyano BNJ-42 is listed with a Mitsubishi M80W dual-path control and weighs 5,300 kg. The BNE-42 has a Mitsubishi M80 control, weighs 7,800kg and carries two 12-station turrets. Both are listed for chuck work to 200 mm (7.87 in), revolving tools to 6,000 RPM and rapids of 20 m/min on X and 24 m/min on Z.
02
The second spindle moves 450mm on its R axis. Turret HD1 has 380mm of Z1 and a ±40mm Y stroke, and turret HD2 has a 175mm stroke. Check that the part length plus chuck and tool overhang fit these strokes before planning back-side work.
03
Each of the two turrets has 12 stations, and both accept revolving tools, 12+12 in all. Square turning tools take a 20mm Sq. shank and the tool holes are 25mm Dia. Revolving tools run to 6,000 RPM.
04
A 6" hydraulic power chuck on the main spindle and a 5" hydraulic chuck on the second spindle. Chuck work is listed to 200 mm (7.87 in) in diameter, and the second spindle takes bar work to 42mm Dia.
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