Citizen Machinery CNC Lathes / Turning Centers

Citizen Miyano BNA-42MSY2

Est. $175,000 - $260,000 Specs verified 2026-10-03 · cmj.citizen.co.jp Updated 2026-10-03

Image: marucit.com, Citizen Machinery

Key Specifications

maximum machining diameter of bar work sp1

42 mm dia.

maximum machining diameter of bar work sp2

34 mm dia.

maximum machining length

100 mm

spindle motor 15min cont sp1

11/7.5 kW

spindle motor 15min cont sp2

5.5/3.7 kW

spindle speed sp1

6,000 rpm

How much does the Citizen Miyano BNA-42MSY2 cost?

Estimated price range

Est.$175,000 - $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 BNA-42MSY2 is a small two-spindle bar lathe built around one 8St.Turret with a half-indexing mechanism. The main spindle (SP1) machines bar up to 42 mm dia. at 6,000 rpm, the second spindle (SP2) up to 34 mm dia. at 5,000 rpm, and the maximum machining length is 100 mm.

The half-indexing turret is the defining choice. Tools can sit between the main stations, so a single turret holds more cutters than its station count suggests, but every operation on SP1 and SP2 still shares that one tool post. Cycle time is therefore the sum of front and back work rather than the longer of the two. Where a part needs heavy work on both ends at once, the twin-turret Miyano BNA-42DHY3 is the sibling built for that.

What the MSY2 offers instead is spindle power. SP1 is rated 11 kW for 15 min and 7.5 kW continuous, against 7.5/5.5 kW on the Miyano BNA-42DHY3; SP2 has 5.5/3.7 kW. Up to 8 revolving tools can be fitted, and the turret has a Y1 axis with 12 m/min rapids for off-centre features.

Rapid feed rates are 20 m/min on Z1, X1 and Z2, and 12 m/min on Y1 and X2. Turning tools are 20 mm Sq. and drill shanks 25 mm dia. The machine occupies 2,388×1,450 mm, stands 1,620 mm high and weighs 3,000 kg.

Full Specifications

Parameter	Value
Maximum Machining Diameter of Bar Work Sp1	42 mm dia.
Maximum Machining Diameter of Bar Work Sp2	34 mm dia.
Maximum Machining Length	100 mm
Spindle Motor 15min Cont Sp1	11/7.5 kW
Spindle Motor 15min Cont Sp2	5.5/3.7 kW
Spindle Speed Sp1	6,000 rpm
Spindle Speed Sp2	5,000 rpm
Type of Turret	8St.Turret(half-indexing mechanism)
Shank Height of Square Turning Tool	20 mm Sq.
Diameter of Drill Shank	25 mm dia.
Rapid Feed Rate Z1 Axis	20 m/min
Rapid Feed Rate X1 Axis	20 m/min
Rapid Feed Rate Y1 Axis	12 m/min
Rapid Feed Rate Z2 Axis	20 m/min
Rapid Feed Rate X2 Axis	12 m/min
Maximum Number of Revolving Tool	8
Machine Height	1,620 mm
Floor Space	2,388×1,450 mm
Machine Weight	3,000 kg

Specifications sourced from cmj.citizen.co.jp — verified 2026-10-03

Strengths & Limitations

Strengths

SP1 rated 11 kW for 15 min and 7.5 kW continuous, the stronger main spindle of the two BNA models
8-station turret with a half-indexing mechanism for more tool positions on one turret
Y1 axis on the turret, with 12 m/min rapid feed, for off-centre drilling and milling
20 m/min rapids on Z1, X1 and Z2
Compact at 2,388×1,450 mm and 3,000 kg

Limitations

A single turret serves both spindles, so front and back operations cannot overlap
Maximum machining length of 100 mm keeps it to short parts
SP2 takes 34 mm dia. bar against 42 mm dia. on SP1
No more than 8 revolving tools can be fitted

Best For

Short bar parts up to 42 mm dia. with light back-end work Turning-heavy parts that need SP1 power Parts with a few off-centre holes or flats on the Y1 axis Compact multi-machine cells

Frequently Asked Questions

01 What does the half-indexing turret do on the BNA-42MSY2?

The 8-station turret can index to positions between its main stations, so it carries more tools than eight positions alone would allow. Because it is the only turret, front and back operations run one after the other. If the back-end work is long, compare the twin-turret Miyano BNA-42DHY3.

02 How much spindle power does it have?

SP1 is rated 11 kW for 15 min and 7.5 kW continuous, with a top speed of 6,000 rpm. SP2 is rated 5.5 kW for 15 min and 3.7 kW continuous, at 5,000 rpm.

03 What are the rapid feed rates?

Z1 and X1 traverse at 20 m/min, Y1 at 12 m/min, Z2 at 20 m/min and X2 at 12 m/min. The slower X2 and Y1 axes matter mostly on parts with many short moves on the back side or in Y.

04 Which bar sizes does each spindle take?

SP1 machines bar work up to 42 mm dia. and SP2 up to 34 mm dia. Maximum machining length is 100 mm. Check that the section gripped by SP2 for back working is within 34 mm dia.