Citizen Cincom R04

Est. $80,000 - $150,000 Possible older model Specs verified 2026-09-24 · marucit.com 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 It may be a superseded or older model; the specifications below are as we last recorded them.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: cmj.citizen.co.jp, Citizen Machinery

Key Specifications

Max Spindle

20,000 rpm (Rating: 16,000)

Tool Capacity

13 Tools

Rapid Traverse

30 m/min (all axes)

Spindle Power

0.75 / 1.1 kW

max machining diameter

4 mm (0.16 in)

max machining length

40 mm (1.57 in)

How much does the Citizen Cincom R04 cost?

Estimated price range

Est.$80,000 - $150,000

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 R04 is an earlier micro Swiss-type lathe for parts up to 4 mm (0.16 in) in diameter and 40 mm (1.57 in) long. It is not in Citizen's current lineup, where the Cincom R04-VI has taken its place, so most machines on offer are used. Its main spindle is listed at 20,000 rpm with a rating of 16,000 rpm, and its back spindle at 10,000 rpm.

The back spindle is the clearest difference from the current machine. The Cincom R04-VI lists max. 20,000 rpm on its back spindle and weighs 1,100 kg; this R04 lists 10,000 rpm and 950 kg (2,094 lb). Half the back-spindle speed matters for back-end drilling and turning on a part of this size, where the cutting speed at the tool is already low, so check the back-end cycle times of your parts before choosing the older machine.

On the back spindle the part is held in a chuck of up to 4 mm (0.157 in) with up to 10 mm (0.394 in) protruding. The front can drill 3 mm (0.118 in) and tap M3. Rotary tools run to 8,000 rpm, and the axes rapid at 30 m/min. The control is Mitsubishi Meldas with Citizen software.

Several rows of the table disagree with each other: tool count, back-end drilling and tapping size, spindle bore, motor ratings and power consumption each appear twice with different values. Confirm those on the machine before relying on them.

Full Specifications

Parameter	Value
Max Machining Diameter	4 mm (0.16 in)
Max Machining Length	40 mm (1.57 in)
Back Spindle Chuck	4 mm (0.157 in)
Back Spindle Protrusion	10 mm (0.394 in)
Spindle Bore	9 mm (0.35 in)
Max Drilling Front	3 mm (0.118 in)
Max Tapping Front	M3
Max Drilling Back	2 mm (0.079 in)
Max Tapping Back	M2.6
Rapid Traverse Rate	30 m/min (all axes)
Power Consumption	4 kVA
Machine Weight	950 kg (2,094 lb)
Center Height	1,000mm
CNC Control	Mitsubishi Meldas (Citizen software)
Maximum Machining Diameter	4mm Dia.
Maximum Machining Length	Fixed guide bushing
Rotary Guide Bushing	20mm
Maximum Drilling Diameter for Main Spindle	3mm Dia.
Maximum Front Tapping Diameter	M3
Spindle Through Hole Diameter	10mm Dia.
Max Spindle Speed	20,000 rpm (Rating: 16,000)
Maximum Drilling Diameter for Rotary Tool	2mm Dia.
Maximum Tapping Diameter for Rotary Tool	M2
Spindle Speed of The Gang Rotary Tool	Max.8,000min-1
Number of Tools to Be Mounted	17
Sleeve	15.875mm Dia.
For Tool Spindle Drive	0.1kW
For Cutting Coolant Oil	0.06kW
Rated Power Consumption	3.4kVA
Load Operation Average Power	1.6kVA
Maximum Machining Length Fixed Guide Bushing	40mm
Maximum Machining Length Rotary Guide Bushing	30mm
Tool Size Turning Tool	8mm Sq.
Tool Size Sleeve	15.875mm Dia.
Rapid Feed Rate X1 Axis	30m/min
Motors for Spindle Drive	0.5/0.75kW
Motors for Tool Spindle Drive	0.1kW
Motors for Cutting Coolant Oil	0.06kW
Maximum Chuck Diameter of Back Spindle	4mm Dia.
Maximum Protrusion Length of The Back Spindle Workpiece	10mm
Maximum Drilling Diameter in Back Machining Process	3mm Dia.
Maximum Tapping Diameter in Back Machining Process	M3
Motors for Back Spindle Drive	0.5/0.75kW
Sub Spindle Speed	10,000 rpm
Tool Capacity	13 Tools
Live Tool Speed	8,000 rpm (Part: 6,000)
Spindle Motor Power	0.75 / 1.1 kW
Sub Spindle Power	0.5 kW
Live Tool Power	0.2 kW

Specifications sourced from marucit.com — verified 2026-09-24

Strengths & Limitations

Strengths

Takes work up to 4 mm (0.16 in) dia. and 40 mm (1.57 in) long
Main spindle to 20,000 rpm, with a 16,000 rpm rating
Back spindle chuck of 4 mm (0.157 in) with 10 mm (0.394 in) protrusion
Light machine at 950 kg (2,094 lb)
30 m/min rapid traverse and 8,000 rpm rotary tools

Limitations

Back spindle limited to 10,000 rpm, against 20,000 rpm on the current Cincom R04-VI
No longer in Citizen's lineup; parts and documentation need checking for a used machine
Several rows of the table conflict, including tool count and back-end drilling size
Front drilling is limited to 3 mm (0.118 in) and M3

Best For

Micro turned parts up to 4 mm (0.16 in) dia. Pins and shafts up to 40 mm (1.57 in) long Used-machine buyers who want 4 mm Swiss-type capacity at 950 kg

Frequently Asked Questions

01 How does the Cincom R04 differ from the Cincom R04-VI?

The Cincom R04 back spindle is listed at 10,000 rpm and the machine at 950 kg (2,094 lb). The Cincom R04-VI lists max. 20,000 rpm on the back spindle and weighs 1,100 kg. Both handle work up to 4 mm dia. and run the main spindle to 20,000 rpm. The R04-VI is the model in Citizen's current lineup.

02 What can the rotary tools on the Cincom R04 do?

Rotary tools run to 8,000 rpm and are listed for 2 mm dia. drilling and M2 tapping. That covers small cross holes and threads on a 4 mm part; larger holes have to be drilled on the spindle centreline, where the front limit is 3 mm (0.118 in).

03 How many tools does the Cincom R04 hold?

The table is not consistent on this: one row gives 13 tools and another 17. Count the holders on the machine you are looking at rather than relying on either figure.

04 What size parts can the R04 machine?

Up to 4 mm (0.16 in) in diameter and 40 mm (1.57 in) in length. On the back spindle the chuck takes up to 4 mm (0.157 in) and the part may protrude up to 10 mm (0.394 in).