Citizen Cincom D25-VIII

Est. $160,000 - $250,000 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

25 mm dia.

maximum machining length guide bushing

250 mm

maximum machining length guide bushing less

2.5D

maximum drilling diameter for main spindle

12 mm dia.

maximum front tapping diameter cut tap

M10

How much does the Citizen Cincom D25-VIII cost?

Estimated price range

Est.$160,000 - $250,000

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 D25-VIII is the 43-tool type of Citizen's D25, a 25 mm sliding-headstock lathe with a 10,000 rpm main spindle and an equally fast back spindle. Every other row in Citizen's table matches the Cincom D25-VII, which mounts 59 tools; the table does not say what the VIII's layout offers in exchange for its 16 fewer positions, so ask Citizen for the tool layout of both before deciding.

The main spindle is driven by a 3.7/5.5 kW motor. At the front it drills 12 mm and cut-taps M10, and the gang rotary tools, on a 2.2 kW drive at up to 9,000 rpm, take 10 mm drills and M8 cut taps. Turning tools are 16 mm or 19 mm square with 25.4 mm sleeves.

On a D25-VIII the back end of the part gets almost the same capacity as the front. The back spindle chuck is 25 mm, the back spindle motor 2.2/3.7 kW, and back machining reaches 12 mm drilling and M10 tapping with 50 mm of work protruding. Rotary tools on the back tool post have their own 1.0 kW drive. That makes it practical to put substantial features on the cut-off end, such as a tapped bore, rather than just a chamfer.

In guide-bush mode a part can be machined over 250 mm per chucking; guide-bushless, the limit is 2.5D. Rapids are 32 m/min on all axes except Z2, which is 24 m/min. Installation is the same as the VII: 3,450 kg, a 13 kVA power requirement with 7.1 kVA average, and a 1,050 mm centre height.

Full Specifications

Parameter	Value
Maximum Machining Diameter	25 mm dia.
Maximum Machining Length Guide Bushing	250 mm
Maximum Machining Length Guide Bushing Less	2.5D
Maximum Drilling Diameter for Main Spindle	12 mm dia.
Maximum Front Tapping Diameter Cut Tap	M10
Max Spindle Speed	max. 10,000 rpm
Maximum Drilling Diameter for Rotary Tool	10 mm dia.
Maximum Tapping Diameter for Gang Rotary Tool Cut Tap	M8
Spindle Speed of The Gang Rotary Tool	max. 9,000 rpm
Maximum Chuck Diameter of Back Spindle	25 mm dia.
Maximum Protrusion Length of The Back Spindle Workpiece	50 mm
Maximum Drilling Diameter in Back Machining Process	12 mm dia.
Maximum Tapping Diameter in Back Machining Process	M10
Sub Spindle Speed	max. 10,000 rpm
Number of Tools to Be Mounted	43
Tool Size Turning Tool	16 mm Sq./19 mm Sq.
Tool Size Sleeve	25.4 mm dia.
Rapid Feed Rate Z2 Axis	24 m/min
Rapid Feed Rate Axes Other Than The Above	32 m/min
Motors for Spindle Drive	3.7/5.5 kW
Motors for Tool Spindle Drive	2.2 kW
Motors for Back Spindle Drive	2.2/3.7 kW
Motors for Driving Rotary Tools on The Back Tool Post	1.0 kW
Power Requirement	13 kVA
Load Operation Average Power	7.1 kVA
Center Height	1,050 mm
Machine Weight	3,450 kg

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

Strengths & Limitations

Strengths

Back spindle with a 25 mm chuck, 10,000 rpm and 12 mm drilling and M10 tapping
Back tool post rotary tools with their own 1.0 kW drive
Gang rotary tools reach 9,000 rpm on a 2.2 kW motor
43 tools to be mounted with a 3.7/5.5 kW main spindle motor
Choice of guide-bush machining over 250 mm or guide-bushless at 2.5D

Limitations

Mounts 43 tools against 59 on the Cincom D25-VII, and the table does not state what the VIII adds in return
3,450 kg weight and 13 kVA supply call for a solid floor and a substantial electrical feed
Bar capacity ends at 25 mm
Z2 rapid is 24 m/min, below the 32 m/min of the other axes

Best For

25 mm parts with substantial back-end features Tapped bores to M10 on both ends of the part Cross-drilled parts using 10 mm rotary drills Short parts run guide-bushless to save bar

Frequently Asked Questions

01 Why would I choose the D25-VIII over the D25-VII?

Citizen's table shows the same figures for both except the tool count: 43 on the D25-VIII and 59 on the Cincom D25-VII. The table does not describe what the VIII's layout adds, so request the tooling layout drawings for both types and compare them against your part list.

02 How strong is the back spindle on the D25-VIII?

It takes a 25 mm chuck, runs to 10,000 rpm and is driven by a 2.2/3.7 kW motor. Back machining is listed to 12 mm drilling and M10 tapping with up to 50 mm of the part protruding, and a separate 1.0 kW motor drives rotary tools on the back tool post.

03 What are the D25-VIII's rotary tool limits?

The gang rotary tools run to 9,000 rpm on a 2.2 kW tool spindle motor, with a maximum drilling diameter of 10 mm and cut tapping to M8. The main spindle itself drills to 12 mm and cut-taps M10 at the front.

04 What power and floor loading does the D25-VIII need?

Citizen gives a 13 kVA power requirement and a 7.1 kVA average during load operation. The machine weighs 3,450 kg with a 1,050 mm centre height, so check floor loading and the electrical feed before delivery.