Citizen Cincom A20-VII

Est. $150,000 - $230,000 Specs verified 2026-10-03 · cmj.citizen.co.jp Updated 2026-10-03

Image: citizenmachinery.co.uk, Citizen Machinery

Key Specifications

Max Spindle

max. 10,000 rpm

maximum machining diameter

20 mm dia.

maximum machining length guide bushing

200 mm

maximum machining length guide bushing less

2.5D(max. 55 mm)

maximum drilling diameter for main spindle

10 mm dia.

maximum tapping diameter for main spindle tap die

How much does the Citizen Cincom A20-VII cost?

Estimated price range

Est.$150,000 - $230,000

Our best estimate for a swiss-type lathe in this class — not a quote from Citizen Machinery. Configuration moves it a long way.

Overview

The Citizen Cincom A20-VII is a sliding-headstock automatic lathe for work up to 20 mm in diameter that can run with a guide bushing or without one. With the guide bushing it machines 200 mm of length; without it the limit is 2.5D, max. 55 mm. The main spindle runs to max. 10,000 rpm and the machine holds 21 tools.

The two modes suit different work. The guide bushing supports long, slender parts close to the cut, which is where Swiss-type machines earn their keep. Guide-bushless running gives up length but suits short, stubby parts and bar that is not ground to guide-bush tolerance, and it leaves a shorter remnant at the end of each bar.

Hole-making capacities are stated for each position. The main spindle drills 10 mm dia. and taps M8. Gang rotary tools drill 7 mm dia. and tap M6, running at max. 6,000 rpm (rating4,800 rpm) on a 0.75 kW motor. The back spindle chucks up to 20 mm dia., allows 50 mm of workpiece protrusion, drills 8 mm dia. and taps M6, and runs to max. 8,000 rpm on 1.1/1.5 kW. Turning tools are 12 mm Sq. as standard, with 13 mm Sq. and 16 mm Sq. listed as alternatives.

Rapid feed is 32 m/min on X2, Y, Z1 and Z2 and 18 m/min on X1. The spindle drive is 2.2/3.7 kW and the coolant pump 0.4 kW. Citizen gives a power requirement of 7.1 kVA, 4.1 kVA average under load, a 1,050 mm centre height and a weight of 2,200 kg. The smaller Cincom B12E-II, at 12,000 rpm (R.G.B.8,000 rpm) and 1,100 kg, is the step down in this range.

Full Specifications

Parameter	Value
Maximum Machining Diameter	20 mm dia.
Maximum Machining Length Guide Bushing	200 mm
Maximum Machining Length Guide Bushing Less	2.5D(max. 55 mm)
Maximum Drilling Diameter for Main Spindle	10 mm dia.
Maximum Tapping Diameter for Main Spindle Tap Die	M8
Max Spindle Speed	max. 10,000 rpm
Maximum Drilling Diameter for Rotary Tool	7 mm dia.
Maximum Tapping Diameter for Rotary Tool	M6
Spindle Speed of The Gang Rotary Tool	max. 6,000 rpm (rating4,800 rpm)
Maximum Chuck Diameter of Back Spindle	20 mm dia.
Maximum Protrusion Length of The Back Spindle Workpiece	50 mm
Maximum Drilling Diameter in Back Machining Process	8 mm dia.
Maximum Tapping Diameter in Back Machining Process	M6
Sub Spindle Speed	max. 8,000 rpm
Number of Tools to Be Mounted	21
Tool Size Turning Tool	12 mm Sq. (13 mm Sq., 16 mm Sq.)
Rapid Feed Rate X1 Axis	18 m/min
Rapid Feed Rate X2 Axis	32 m/min
Rapid Feed Rate Y Axis	32 m/min
Rapid Feed Rate Z1 Axis	32 m/min
Rapid Feed Rate Z2 Axis	32 m/min
Motors for Spindle Drive	2.2/3.7 kW
Motors for Tool Spindle Drive	0.75 kW
Motors for Back Spindle Drive	1.1/1.5 kW
Motors for Cutting Coolant Oil	0.4 kW
Power Requirement	7.1 kVA
Load Operation Average Power	4.1 kVA
Center Height	1,050 mm
Machine Weight	2,200 kg

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

Strengths & Limitations

Strengths

Runs with or without a guide bushing: 200 mm machining length with it, 2.5D (max. 55 mm) without
Main spindle drills 10 mm dia. and taps M8; gang rotary tools drill 7 mm dia. and tap M6
Back spindle chucks up to 20 mm dia., runs to max. 8,000 rpm and drills 8 mm dia.
32 m/min rapids on X2, Y, Z1 and Z2
21 tools, with 13 mm Sq. and 16 mm Sq. turning tools listed besides the 12 mm Sq. standard

Limitations

Rotary tools run at max. 6,000 rpm (rating4,800 rpm) on a 0.75 kW motor, so milling is light
Guide-bushless machining is limited to 2.5D, max. 55 mm
X1 rapid is 18 m/min, against 32 m/min on the other axes
Back-spindle protrusion is limited to 50 mm and its motor to 1.1/1.5 kW

Best For

Turned parts up to 20 mm diameter and 200 mm long Short parts made guide-bushless, up to 55 mm long Parts with cross holes and M6 tapped features at both ends Back-end drilling up to 8 mm

Frequently Asked Questions

01 Can the Cincom A20-VII run without a guide bushing?

Yes. Guide-bushless, the maximum machining length is 2.5D, max. 55 mm. With the guide bushing it is 200 mm. The guide-bushless mode suits short parts; the guide bushing is for long, slender work.

02 What drilling and tapping can the A20-VII do?

On the main spindle, drilling to 10 mm dia. and tapping to M8. Gang rotary tools drill to 7 mm dia. and tap to M6. In back machining, drilling to 8 mm dia. and tapping to M6.

03 What does the back spindle of the A20-VII handle?

It chucks work up to 20 mm dia. with up to 50 mm of protrusion, and runs to max. 8,000 rpm on a 1.1/1.5 kW motor. Back-end drilling goes to 8 mm dia. and tapping to M6.

04 How does the A20-VII compare with the Cincom B12E-II?

The Cincom B12E-II runs to 12,000 rpm (R.G.B.8,000 rpm) and weighs 1,100 kg. The A20-VII runs to max. 10,000 rpm, handles 20 mm dia. work, carries 21 tools and weighs 2,200 kg.

05 What power supply does the A20-VII need?

Citizen gives a power requirement of 7.1 kVA, with 4.1 kVA average during load operation. The centre height is 1,050 mm, which the bar feeder must match, and the machine weighs 2,200 kg.