Citizen Machinery CNC Lathes / Turning Centers

Citizen Miyano BNE-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 2026-10-02 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.

Image: citizenmachinery.co.uk, Citizen Machinery

Key Specifications

Max Spindle

Max. 6,000 min⁻¹ (Rating: 3,000 min⁻¹)

Max Turn Length

90 mm (3.54 in)

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)

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

Estimated price range

Est.$180,000 - $260,000

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 Citizen Miyano BNE-51SY is a twin-spindle, twin-turret fixed-headstock lathe with a Y axis, listed with 51 mm (2.0 in) bar capacity on the main spindle and 42 mm (1.65 in) on the sub spindle. It is not in Citizen's current lineup and may be an earlier generation of the BNE-51SY6, so this page is for someone looking at a secondhand machine. The figures below are the listed ones; nobody has checked them against a Citizen product page.

Both spindles are listed at 5,000 RPM. The main spindle motor is listed at 15 / 11 kW (20 / 15 hp) and the sub spindle at 5.5 / 3.7 kW (7.5 / 5 hp). Two turrets, HD1 and HD2, carry 12 + 12 stations (24 total), with live tools at 6,000 RPM and 20 mm square tool shanks. The Y-axis stroke is listed as +/-40 mm (80 mm total), and the sub spindle travels 450 mm (17.72 in) in Z3.

The listed control is a Mitsubishi M80, and the listed weight is 7,800 kg (17,196 lb) with a machine height of 1,925 mm (75.8 in). The sub spindle motor is well under half the main spindle rating, so heavy cuts belong on the main side and the sub spindle is for back-end finishing. On a used example, check the turret tooling actually fitted, the condition of the Y axis and the bar feeder that comes with it, since none of these is covered by the listed figures.

Full Specifications

Parameter	Value
Max Bar Capacity Sp1	51 mm (2.0 in)
Max Bar Capacity Sp2	42 mm (1.65 in)
Max Turning Length	90 mm (3.54 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	5.5 / 3.7 kW (7.5 / 5 hp)
Number of Turrets	2 (HD1 + HD2)
Turret Stations	12 + 12 (24 total)
Max Live Tools	24
Live Tool Speed	6,000 RPM
Tool Shank Size	20 mm square
Sub Spindle Travel Z3	450 mm (17.72 in)
Machine Weight	7,800 kg (17,196 lb)
CNC Control	Mitsubishi M80 (Citizen Miyano)
Y Axis Stroke	+/-40 mm (80 mm total)
Machine Height	1,925 mm (75.8 in)
Max Machining Diameter	32 mm Dia.
Max Machining Length	GB: 320 mm / 1 chucking, GBL: 2.5D
Max Front Drilling Diameter	12 mm Dia.
Max Front Tapping Diameter	M12
Spindle Through Hole Diameter	39 mm Dia.
Max Chuck Diameter of The Back Spindle	32 mm Dia.
Max Protrusion Length of The Back Spindle Workpiece	80 mm
Max Protrusion Length	150 mm
Max Drilling Diameter for The Back Spindle	10 mm Dia.
Max Tapping Diameter for The Back Spindle	M10
Gang Rotary Tool	4 – 6
Max Tapping Diameter	M6
Max Spindle Speed	Max. 6,000 min⁻¹ (Rating: 3,000 min⁻¹)
Front Rotary Tool 2	Max. drilling diameter
Number of Tools to Be Mounted Max	19 – 30
Gang Turning Tool	6
Front Drilling Tool	4 – 9
Tool Size	Gang turning tool
Sleeve	25.4 mm Dia.
Chuck and Bushing	Main spindle collet chuck
Rotary Tool Collet Chuck	ER11, ER16
Chuck for Drill Sleeves	ER11, ER16
Guide Bushing	FG531-M (FG581-M: 38 mm Dia. spec.)
Rapid Feed Rate	All axes (except Y2)
Motors	Spindle drive
Gang Tool Post Rotary Tool Drive	1.0 kW
Front Rotary Tool Drive 2	1.0 kW
Coolant Oil	0.4 kW
Lubricating Oil	0.003 kW
Rated Power Consumption	13.2 KVA
Full Load Current	36 A
Main Breaker Capacity	60 A
Air Pressure and Air Flow Rate for Pneumatic Devices	0.5 MPa, 64.2 NL/min
Centre Height	1,050 mm

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

Listed 51 mm (2.0 in) main-spindle bar capacity with a 15 / 11 kW (20 / 15 hp) motor
Two turrets with 12 + 12 stations (24 total) and live tools at 6,000 RPM
Listed Y-axis stroke of +/-40 mm (80 mm total) for off-centre features
Sub spindle travel of 450 mm (17.72 in) in Z3

Limitations

Not in Citizen's current lineup, and the listed figures have not been checked against a Citizen page
Sub spindle is listed at 42 mm (1.65 in), so the back end of a 51 mm part must be reduced
Both spindles are listed at 5,000 RPM, which limits surface speed on small diameters

Best For

Buyers assessing a used BNE-51SY Bar parts up to 51 mm (2.0 in) with off-centre features Parts machined on both ends in one cycle

Frequently Asked Questions

01 Is the Miyano BNE-51SY still in production?

Citizen's current product pages do not list it; it may be an earlier generation of the BNE-51SY6. The figures on this page are the listed ones and have not been checked against a Citizen page, so confirm them on the machine you are looking at.

02 What bar sizes does the BNE-51SY take?

The listed bar capacity is 51 mm (2.0 in) on the main spindle and 42 mm (1.65 in) on the sub spindle, with a maximum turning length of 90 mm (3.54 in). Parts made from full-size bar need a back end the sub spindle can grip.

03 How are the turrets and live tools configured?

Two turrets, HD1 and HD2, with 12 + 12 stations (24 total) and up to 24 live tools listed, at 6,000 RPM. Tool shanks are 20 mm square, and the Y-axis stroke is listed as +/-40 mm (80 mm total).

04 How heavy and tall is the BNE-51SY?

The listed weight is 7,800 kg (17,196 lb) and the machine height 1,925 mm (75.8 in). Plan rigging and a floor that can carry that load, and allow space for a bar feeder and chip handling around the machine.