Citizen Machinery Mill-Turn / Multi-Tasking Machines

Citizen Miyano BND-51SY

Est. $180,000 - $260,000 Possible older model Updated 2026-10-03

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 It may be a superseded or older model; the specifications below are as we last recorded them.

Citizen Miyano BND-51SY Mill-Turn Machines

Image: cmj.citizen.co.jp, Citizen Machinery

Key Specifications

X Travel

175 mm (6.89 in)

Rapid Traverse

20 m/min (787 ipm)

max bar capacity

51 mm (2.0 in)

max machining length

320 mm (12.60 in)

main spindle speed

50 - 5,000 RPM

main spindle power

15/11 kW (20/15 hp)

How much does the Citizen Miyano BND-51SY cost?

Estimated price range

Est.$180,000 - $260,000

Our best estimate for a mill-turn / multi-tasking machine in this class — not a quote from Citizen Machinery. Configuration moves it a long way.

Overview

The Citizen Miyano BND-51SY is an earlier fixed-headstock lathe for bar up to 51 mm (2.0 in), with a 12-station live-tool turret, a Y axis and a second spindle. It is not in Citizen's current lineup. The figures listed for it are the same as those of the current Miyano BND-51SY2, so a buyer looking at a BND-51SY should confirm each one against the machine's own documentation.

On the listed figures this is a long-part machine. Maximum machining length is 320 mm (12.60 in), and the turret travels 435 mm (17.13 in) in Z and 175 mm (6.89 in) in X, so shafts can be produced from the bar in one setup. The Y axis gives 75 mm (+40/-35 mm), which handles cross holes, flats and keyways. The second spindle, which also reaches 5,000 rpm, has a 530 mm (20.87 in) Z2 stroke.

The main spindle covers 50 - 5,000 rpm on a 15/11 kW (20/15 hp) motor and is fitted with a 6 in power chuck. All 12 turret stations can hold live tools, listed at 5,000 rpm; turning tools use 20mm Sq. shanks and the tool holes are 25mm Dia. Rapid traverse is 20 m/min (787 ipm), the same figure the Miyano BNA-42DHY lists.

The control appears only as Mitsubishi CNC, without a model, and the machine weighs approximately 4,500kg. The table has no back-spindle motor rating, so ask the seller for it if the job involves real cutting on the second end.

Full Specifications

Parameter	Value
Max Bar Capacity	51 mm (2.0 in)
Max Machining Length	320 mm (12.60 in)
Main Spindle Speed	50 - 5,000 RPM
Main Spindle Power	15/11 kW (20/15 hp)
Sub Spindle Speed	5,000 RPM
Turret Stations	12
Live Tool Stations	12
Live Tool Speed	5,000 RPM
X-Axis Travel	175 mm (6.89 in)
Travel Z1	435 mm (17.13 in)
Travel Z2	530 mm (20.87 in)
Y Axis Travel	75 mm (+40/-35 mm)
Rapid Traverse Rate	20 m/min (787 ipm)
Chuck Size	6 in power chuck
CNC Control	Mitsubishi CNC
Items	BND-51SY2
Maximum Machining Diameter of Bar Work	51mm Dia.
Maximum Machining Length	Bar
Type of Turret	12St.Turret
Z Axis	435mm
Y Axis	+40mm/-35mm
B Axis	530mm
Shank Height of Square Turning Tool	20mm Sq.
Tool Hole Diameter	25mm Dia.
Maximum Number of Revolving Tool	12
Main Spindle Speed Range	50 - 5,000min-1
Spindle Motor	15/11kW
Maximum Machining Length Bar	320mm
Slide Stroke X Axis	175mm
Slide Stroke Z Axis	435mm
Slide Stroke Y Axis	+40mm/-35mm
Slide Stroke B Axis	530mm
Machine Weight Approx	4,500kg

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

Maximum machining length of 320 mm (12.60 in) from 51 mm (2.0 in) bar
12-station turret with live tools in every station and 75 mm (+40/-35 mm) of Y
Second spindle listed at 5,000 rpm with a 530 mm (20.87 in) Z2 stroke
15/11 kW (20/15 hp) main spindle motor and a 6 in power chuck

Limitations

Not in Citizen's current lineup, and the listed figures match the Miyano BND-51SY2, so check them on the machine
Live tools are listed at 5,000 rpm, low for small drills and end mills
Control listed only as Mitsubishi CNC with no model; confirm the control generation before buying
No back-spindle motor rating in the table

Best For

Shafts and pins up to 320 mm long from bar Used-machine buyers needing 51 mm bar with Y-axis live tooling Turned parts with cross holes and flats finished on a second spindle

Frequently Asked Questions

01 Is the Miyano BND-51SY still made?

It is not in Citizen's current lineup. The current model in the series is the Miyano BND-51SY2, and the figures listed for the BND-51SY are the same as that machine's, so verify them on any BND-51SY you consider.

02 How long can parts be on the BND-51SY?

The listed maximum machining length is 320 mm (12.60 in). The turret has 435 mm (17.13 in) of Z travel and the second spindle a 530 mm (20.87 in) Z2 stroke, so long parts can be turned and transferred in one cycle.

03 What live tooling does the BND-51SY have?

A 12-station turret in which all 12 stations can hold live tools, listed at 5,000 rpm. The Y axis travels 75 mm (+40/-35 mm). Turning tools take 20mm Sq. shanks and the tool holes are 25mm Dia.

04 What should I check on a used BND-51SY?

Confirm the control model, since the table lists only Mitsubishi CNC, and get the back-spindle motor rating, which the table does not give. Plan for approximately 4,500kg and a 20 m/min (787 ipm) rapid traverse.