Industrial CNC Machine Directory

Citizen Miyano BNC-42

$80,000 - $120,000 Updated 2026-03-19
Citizen Miyano BNC-42 CNC Lathes
01

Key Specifications

max bar capacity

42 mm (1.65 in)

max machining length

175 mm (6.89 in)

main spindle speed

60 - 6,000 RPM

spindle motor

7.5/5.5 kW (10/7.5 hp)

turret stations

8

turret tool size

20 mm square

02

Overview

Compact fixed-headstock CNC lathe for 42mm chucking. 8-station turret with 0.2s indexing via curvic coupling. Spindle: 60-6,000 RPM, 7.5/5.5 kW. X: 135mm, Z: 235mm, 175mm max length.

Optional live tooling: up to 8 revolving tools at 50-5,000 RPM, 2.8/1.0 kW. Multiple chuck/collet options (5/6-inch power chuck, HARDINGE S20, DIN173E, B&S #22D, JPN34). 2,400 kg, 2,272x1,270mm footprint.

03

Full Specifications

Parameter Value
Max Bar Capacity 42 mm (1.65 in)
Max Machining Length 175 mm (6.89 in)
Main Spindle Speed 60 - 6,000 RPM
Spindle Motor 7.5/5.5 kW (10/7.5 hp)
Turret Stations 8
Turret Tool Size 20 mm square
Turret Indexing Time 0.2 sec/station
Live Tools Up to 8 (optional)
Live Tool Speed 50 - 5,000 RPM
Live Tool Power 2.8/1.0 kW
X Axis Stroke 135 mm
Z Axis Stroke 235 mm
Chuck Options 5/6 in power chuck; S20, DIN173E, B&S #22D, JPN34
Floor Space 2,272×1,270mm
Machine Height 1,686 mm
Machine Weight 2,400kg
CNC Control Mitsubishi M80 (Citizen Miyano)
Items BNC-42C7
Machining Capacity And Chuck System Maximum Machining Diameter of Bar Work
Power Chuck SP1
Collet Chuck Type SP1
Spindle Spindle Nose
Spindle Motor15min Rating Cont SP1
Spindle Speed Range SP1
Turret Type of Turret
Shank Height Of Square Turning Tool 20mm Sq.
Diameter Of Drill Shank 25mm Dia., 32mm Dia.
Slide Stroke X axis
Z Axis 235mm
Turret Indexing Clamp Method AC Servo motor &curvic coupling
Indexing Time 0.2Sec./1St.
Revolving Tools Maximum Number of Revolving Tool
Tool Spindle Speed Range 50 - 5,000 min-1
Revolving Tool Motor 2.8/1.0kW
Machine Dimensions Floor Space
Sliding Headstock Type A20
Bar Work BNC42
Turning Machine BNA42CY
High Precision Turning Machines BNA42S
Multi Station Machining Cell MC20 III
Maximum Machining Diameter Of Bar Work Sp1 42mm Dia.
Maximum Machining Length *175mm
Power Chuck Sp1 5", 6" Hollow chuck
Collet Chuck Type Sp1 HARDINGE S20, DIN173E, B&S#22D, JPN34
Spindle Nose Sp1 Special Flat Type
Spindle Motor15min Rating Cont Sp1 7.5/5.5kW
Spindle Speed Range Sp1 60 - 6,000 min-1
Type Of Turret 8St.Turret
Slide Stroke X Axis 135mm
Slide Stroke Z Axis 235mm
Maximum Number Of Revolving Tool 8
Inquiries Feel free to get in touch with us by phone or online if you have any questions or need advice about any of our products or services.

Specifications sourced from cmj.citizen.co.jp — verified 2026-03-28

04

Strengths & Limitations

Strengths

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Limitations

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05

Best For

Automotive shops producing precision sensor housings, fuel injector bodies, and small hydraulic fittings in medium-to-high volumes Electronics manufacturers machining connectors, terminal housings, and small precision components requiring tight tolerances Pneumatic and hydraulic component producers needing consistent accuracy on valve bodies and fittings High-mix shops needing a compact, reliable chucking lathe that delivers Swiss-level precision Second-operation work where parts from a Swiss machine need additional chucking operations with high accuracy
06

Frequently Asked Questions

01 What does a Citizen Miyano BNC-42 cost?

A new Citizen Miyano BNC-42 typically costs between $80,000 and $120,000 depending on configuration and tooling options. Used BNC-42 machines from 2015-2020 can be found in the $40,000-$70,000 range depending on condition, hours, and included tooling.

02 What is the difference between the BNC-42 and BNE-42?

The BNC-42 is a basic 2-axis chucking lathe focused on pure turning operations, while the BNE-42 adds live tooling capability and potentially a Y-axis or sub-spindle for more complex multi-operation parts. The BNE is the enhanced version for shops needing milling, drilling, and tapping in addition to turning.

03 Can the BNC-42 run unattended?

Yes, the BNC-42 can run unattended when equipped with a bar feeder. The combination of reliable Citizen controls, thermal stability, and consistent tool life make it well-suited for lights-out production of simple turned parts.

04 How does the Miyano BNC-42 compare to a Haas ST-10?

The BNC-42 is built to a higher precision standard with tighter geometric tolerances and better thermal stability, but costs significantly more than the Haas ST-10. The Haas offers more turning length and a larger working envelope. Choose the BNC-42 for precision-critical parts; choose the Haas for general-purpose turning where cost matters more than micron-level accuracy.

05 What control does the BNC-42 use?

The BNC-42 uses a Mitsubishi M80 CNC control customized with Citizen Miyano's proprietary software. It supports both conversational programming and standard G-code, making it accessible to operators of varying experience levels.

07

Videos

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