DMG Mori CTX gamma 1250 TC

$650,000 - $950,000 Updated 2026-03-13

Key Specifications

Weight

20,000 kg (44,092 lb)

Rapid Traverse

50 m/min (1,969 ipm), 60 m/min Z with linear drive

Max Turn Length

1,250 mm (49.2 in)

max turning diameter

700 mm (27.6 in)

max x axis travel

650 mm (25.6 in)

max y axis travel

320 mm (12.6 in) / +/-160 mm

Overview

The DMG Mori CTX gamma 1250 TC is the premium-tier turn-mill center in the 1250 size class, built on a mineral-cast bed that delivers superior vibration damping and thermal stability compared to the iron-bed CTX beta 1250 TC. If the beta is the workhorse, the gamma is the thoroughbred, engineered for shops where surface finish, geometric accuracy, and long-term dimensional stability justify the price premium.

The main spindle is an ISM 102 integrated motor spindle delivering 44 kW (59 hp) at 4,000 RPM with 1,260 Nm of torque through a 15-inch chuck. That torque figure is 64 percent higher than the beta 1250 TC, and it shows in heavy interrupted cuts on large-diameter tough materials. Bar capacity is 102 mm (4 in). The optional sub-spindle provides 29 kW (39 hp) at 5,000 RPM.

The compactMASTER turn-mill spindle runs at 12,000 RPM with 22 kW (30 hp) and 120 Nm through an HSK-A63 interface, with a 20,000 RPM high-speed option. The B-axis swivels through 240 degrees (plus/minus 120 degrees) via Direct Drive Motor. At 350 mm long, the compactMASTER head is the most compact in its class.

Axis travels span 650 mm (25.6 in) in X, 320 mm (12.6 in) in Y (plus/minus 160 mm), and 1,285 mm (50.6 in) in Z. That 320 mm Y-axis is 60 percent more than the beta. Maximum turning diameter is 700 mm (27.6 in) with a turning length of 1,250 mm (49.2 in). Rapid traverse hits 50 m/min on all linear axes, with optional 60 m/min Z-axis linear drive for 1G acceleration. Direct linear scale feedback is standard.

The standard disc magazine holds 36 HSK-A63 tools, expandable to 80, 120, or 180 via chain magazine. An optional lower turret with 12 VDI 40 stations adds parallel processing. The machine weighs approximately 20,000 kg (44,092 lb). Pricing starts around $650,000 and runs to $950,000 or more fully loaded.

Specs sourced from DMG Mori published data and dealer documentation.

Full Specifications

Parameter	Value
Max Turning Diameter	700 mm (27.6 in)
Max Turning Length	1,250 mm (49.2 in)
Max X Axis Travel	650 mm (25.6 in)
Max Y Axis Travel	320 mm (12.6 in) / +/-160 mm
Max Z Axis Travel	1,285 mm (50.6 in)
Bar Capacity	102 mm (4.0 in)
Chuck Size	15 in (380 mm)
Main Spindle Speed	4,000 RPM
Main Spindle Power	44 kW (59 hp)
Main Spindle Torque	1,260 Nm
Sub Spindle Speed	5,000 RPM (optional)
Sub Spindle Power	29 kW (39 hp) (optional)
Turn Mill Spindle Speed	12,000 RPM (20,000 RPM optional)
Turn Mill Spindle Power	22 kW (30 hp)
Turn Mill Spindle Torque	120 Nm
Turn Mill Spindle Interface	HSK-A63
B Axis Swivel	+/-120 deg (240 deg total), Direct Drive Motor
Tool Magazine	36 standard / 80 / 120 / 180 (chain magazine)
Lower Turret	12-position VDI 40 (optional)
Rapid Traverse Rate	50 m/min (1,969 ipm), 60 m/min Z with linear drive
CNC Control	CELOS with Siemens SINUMERIK 840D sl
Bed Construction	Mineral cast (GILDEMEISTER Casting)
Machine Weight	20,000 kg (44,092 lb)
Floor Space	4,500 x 2,800 mm
700 Mm	27.6 in.
1250 Mm	49.2 in.
127 Mm	5 in.
800 Mm	31.5 in.
420 Mm	16.5 in.
1300 Mm	51.2 in.
Details	Strongest version for 210 kg payloadFree accessibility to the machine and the automationStrongest version for 210 kg payloadFree accessibility to the machine and the automation
Strongest Version For 210 Kg Payloadfree Accessibility To The Machine And The Automation	Strongest version for 210 kg payloadFree accessibility to the machine and the automation
Strongest Version For 210 Kg Payload	Free accessibility to the machine and the automation
Procedure	User Interface
Customer Benefits	MPC Graph: aktuelle und angelernte Prozesswerte. / MPC Diagnostics: Lagerzustand, Anzahl von Stoß und Crash.

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

Strengths & Limitations

Strengths

Mineral-cast bed provides 6-8x better vibration damping than cast iron, delivering superior surface finish and geometric accuracy
1,260 Nm main spindle torque is 64 percent more than the beta 1250 TC, enabling aggressive interrupted cuts in superalloys and hardened steels
320 mm Y-axis travel is 60 percent more than the beta, critical for off-center milling and complex contour work on larger parts
22 kW compactMASTER milling spindle is a step up from the beta 18.5 kW, delivering more material removal rate
50 m/min rapids with optional 60 m/min Z-axis linear drive at 1G acceleration minimizes non-cutting time on long parts
Tool magazine expandable to 180 stations via chain magazine supports extended unattended production runs
Direct linear scale feedback standard on all traveling column axes keeps thermal displacement under 10 micrometers

Limitations

Starting at $650K, the gamma premium over the beta 1250 TC is $150K-$250K that must be justified by quality requirements
Mineral-cast bed requires careful handling during shipping and installation; cracking risk is higher than iron castings if mishandled
At 20,000 kg, the machine demands heavy-duty foundations and rigging adding $20,000-$40,000 to installed cost
4,000 RPM main spindle speed limits high-speed small-diameter turning; the high torque bias favors heavy cuts over speed
DMG Mori service contracts run 20-30 percent higher for gamma-class machines versus beta models

Best For

Aerospace manufacturers producing landing gear, turbine shaft, and structural components where surface finish and geometric accuracy are critical Energy sector shops machining large valve bodies, turbine rotors, and pump components requiring superior vibration damping Precision shops where dimensional stability over long machining cycles justifies the gamma premium over the beta platform Defense contractors producing high-precision cylindrical components with complex milled features under tight tolerances High-value production environments running 180-tool chain magazines for extended unattended operation Shops upgrading from the beta 1250 TC where surface finish and accuracy requirements have outgrown the iron-bed platform

Frequently Asked Questions

01 What does a DMG Mori CTX gamma 1250 TC cost?

A new CTX gamma 1250 TC starts around $650,000. Adding the 20,000 RPM milling spindle, linear Z-axis drive, 180-tool chain magazine, lower turret, sub-spindle, and automation can push the price past $950,000.

02 What is the difference between the CTX gamma 1250 TC and the CTX beta 1250 TC?

The gamma sits on a mineral-cast bed (vs iron on the beta), with more powerful main spindle (44 kW / 1,260 Nm vs 33 kW / 770 Nm), wider Y-axis (320 mm vs 200 mm), more powerful milling spindle (22 kW vs 18.5 kW), and faster rapids (50 vs 40 m/min).

03 What is the mineral-cast bed and why does it matter?

Mineral-cast (polymer concrete) bed absorbs vibration 6-8x better than cast iron. This translates to better surface finish, tighter geometric accuracy, and more consistent dimensional stability over long machining cycles.

04 How does the CTX gamma 1250 TC compare to the Mazak Integrex i-300S?

Both are premium turn-mill centers. The CTX gamma 1250 TC has the mineral-cast bed advantage for vibration damping, more Y-axis travel (320 mm vs 210 mm), and higher torque (1,260 vs 355 Nm). Pricing is comparable at $650K-$900K+.

05 Can the CTX gamma 1250 TC do gear cutting?

Yes. DMG Mori gearSKIVING and gearMILL technology cycles are available on the CELOS/Siemens control for spur, helical, and bevel gears.