DMG Mori CTX 450 4A

20,000 - 00,000 Updated 2026-03-13

Key Specifications

Rapid Traverse

30 m/min (1,181 ipm) X and Z

Max Turn Length

1,100 mm (43.3 in)

max turning diameter

400 mm (15.7 in)

main spindle speed

4,000 RPM

main spindle power

25.5 kW (34.2 hp)

main spindle torque

450 Nm (332 ft-lb)

Overview

The DMG Mori CTX 450 4A is the production-grade variant of the CTX 450, adding a second tool carrier and integrated counter-spindle for simultaneous machining operations. Where the standard CTX 450 processes parts sequentially with a single turret, the 4A runs both turrets in parallel, roughing with one while finishing with the other, or working both ends of the part simultaneously through the sub-spindle. For shops quoting competitive production work, the 20-40% cycle time reduction translates directly to lower cost-per-part.

The main spindle delivers 25.5 kW (34.2 hp) at 4,000 RPM with 450 Nm (332 ft-lb) of torque through an A2-8 spindle nose. The counter-spindle adds 18.5 kW (24.8 hp) at 5,000 RPM for backworking operations. Both turrets accommodate up to 12 tool stations each, providing 24 total positions. With BMT 55 turrets on both carriers, every station can hold a driven tool running at up to 10,000 RPM.

The work envelope matches the standard CTX 450: 400 mm (15.7 in) max turning diameter and 1,100 mm (43.3 in) turning length. Bar capacity is 65 mm (2.56 in). The Y-axis option on the upper turret provides plus/minus 52.5 mm of travel. What the 4A adds is throughput, as parts that take 3 minutes on a single-turret machine often come down to 2 minutes or less with optimized dual-turret programs.

Dual-channel control architecture on the CELOS platform manages both turrets independently while handling synchronization points for part handoff between spindles. This does require CAM software with multi-channel support like Esprit, hyperMILL, or GibbsCAM. The learning curve for dual-turret programming is real, but shops that invest in proper CAM setup and operator training see the payback within the first year on production parts.

Pricing runs 20,000-00,000 depending on configuration. Used CTX 450 4A machines from 2017-2022 trade between 20,000 and 90,000. Direct competitors include the Mazak QT-250MSY with sub-spindle, Okuma LB3000 EX II MYW, and Doosan Puma 2600SY II with sub-spindle.

Full Specifications

Parameter	Value
Max Turning Diameter	400 mm (15.7 in)
Max Turning Length	1,100 mm (43.3 in)
Main Spindle Speed	4,000 RPM
Main Spindle Power	25.5 kW (34.2 hp)
Main Spindle Torque	450 Nm (332 ft-lb)
Sub Spindle Speed	5,000 RPM
Sub Spindle Power	18.5 kW (24.8 hp)
Spindle Nose	A2-8
Chuck Size	254 mm (10 in)
Bar Capacity	65 mm (2.56 in)
X Axis Travel	260 mm (10.2 in)
Y Axis Travel	+/-52.5 mm (+/-2.1 in), optional
Z Axis Travel	1,100 mm (43.3 in)
Turret Configuration	Dual turret, 12 stations each (24 total)
Turret Type	VDI 40 or BMT 55
Driven Tool Speed	Up to 10,000 RPM (BMT 55)
Rapid Traverse Rate	30 m/min (1,181 ipm) X and Z
Machine Weight	7,000 kg (15,432 lb)
CNC Control	CELOS with FANUC or Siemens (dual-channel)
430 Mm	16.9 in.
800 Mm	31.5 in.
102 Mm	4 in.
280 Mm	11 in.
130 Mm	5.1 in.
760 Mm	29.9 in.
Customer Benefits	Before the actual machining, the machining status can be checked by using a graphic

Specifications sourced from us.dmgmori.com — verified 2026-03-28

Strengths & Limitations

Strengths

Dual-turret simultaneous machining cuts cycle times 20-40% on production parts, directly improving cost-per-part competitiveness
24 tool stations across two turrets handle complex multi-operation parts without tool change delays that plague single-turret machines
Both turrets accept BMT 55 driven tools at 10,000 RPM, providing full milling capability on both the main and counter-spindle sides
Integrated counter-spindle enables complete done-in-one parts from bar stock with front side, back side, and all milled features in a single cycle
400 mm turning diameter and 1,100 mm length give the 4A a larger work envelope than the CTX 350 4A while maintaining production throughput
Thermal compensation system maintains tolerance across high-utilization production runs where the machine rarely cools down

Limitations

Starting at 20K, it is a significant capital investment that requires high-volume production to justify the premium over a standard CTX 450
Dual-turret programming complexity demands CAM software with multi-channel support and operators trained in synchronization techniques
Collision risk between turrets requires careful simulation and prove-out, adding setup time for new part programs
7,000 kg machine weight and larger footprint require more floor space and potentially floor reinforcement
DMG Mori premium service and parts costs compound when maintaining two turrets, two spindles, and a more complex machine

Best For

Medium-to-high volume production shops where cycle time reduction directly drives profitability on quoted work Automotive tier suppliers producing complex shaft and hub components with features on both ends from bar stock Medical device production running complete implants and instruments with done-in-one processing for traceability Hydraulic valve body and fitting manufacturers needing threads, cross-holes, and ports on both ends simultaneously Shops running second and third shifts unattended with bar feeders, maximizing spindle utilization across all available hours

Frequently Asked Questions

01 What does a DMG Mori CTX 450 4A cost?

New CTX 450 4A machines start around 20,000. Full configuration with BMT turrets, Y-axis, bar feeder prep, and parts catcher can reach 80,000-00,000. Used machines from 2017-2022 sell between 20,000 and 90,000.

02 How does the CTX 450 4A differ from the standard CTX 450?

The 4A adds a second tool carrier (lower turret) and integrated counter-spindle. This enables simultaneous machining with both turrets working at the same time, plus automatic part handoff between spindles for complete backside processing.

03 What CAM software works with the CTX 450 4A?

Any CAM system with multi-channel support works. The most common choices are Esprit, hyperMILL, and GibbsCAM. All three have proven DMG Mori post processors for dual-turret synchronization.

04 Is the CTX 450 4A worth the premium over the standard CTX 450?

If you are running production volumes where cycle time matters, yes. The 4A typically saves 20-40% per part in cycle time. Most shops see ROI within 12-18 months on production work.

05 Can I run the CTX 450 4A with just one turret?

Yes. The dual-channel control supports single-turret operation for job shop work. Many shops keep the 4A flexible with single-turret mode for low-volume work and dual-turret mode for production runs.