DMG Mori CTX beta 1250
Key Specifications
Weight
Rapid Traverse
Max Turn Length
Accuracy
max turning diameter
max x axis travel
Overview
The DMG Mori CTX beta 1250 TC is a turn-mill center built for shops that need combined turning and milling in a single setup. It sits in the middle of DMG Mori's CTX TC lineup, above the compact CTX beta 450 TC and below the heavy-duty CTX gamma 1250 TC. The "1250" refers to the Z-axis travel of 1,200 mm (47.2 in), which covers most mid-to-large shaft and chuck work.
The main spindle puts out 33 kW (44.2 hp) at 5,000 RPM with 580 Nm of torque through an integrated C-axis accurate to 0.0001 degrees. That's enough grunt for interrupted cuts in steel and stainless without bogging down. The optional sub-spindle adds 25 kW (33.5 hp) at 6,000 RPM for backworking, so you can finish parts complete in one hit.
What makes this machine a true multitasker is the compactMASTER turn-mill spindle. At just 350 mm long with a 70 mm bearing diameter, it's one of the most compact B-axis milling heads on the market. It generates 22 kW and 120 Nm at 12,000 RPM standard, with a 20,000 RPM high-speed option. The B-axis swivels through a continuous 240-degree range (plus/minus 120 degrees) via Direct Drive, and the Y-axis provides 250 mm (9.8 in) of total travel for off-center work. Standard tool magazine holds 24 HSK-A63 tools, expandable to 48 or 80 via chain magazine. Capto C6 is available as an alternative interface.
Circular diameter reaches 500 mm (19.7 in), and max workpiece length is 1,185 mm (46.7 in). The 4A variant adds a second tool carrier as a turret with 12 or 16 driven VDI40 stations plus a DirectDrive turret at 10,000 RPM, making it a serious production platform. Rapid traverse rates hit 40/40/50 m/min in X/Y/Z, or 60 m/min with the optional linear drive in Z that delivers 1G acceleration.
The machine runs on DMG Mori's CELOS interface with a 21.5-inch ERGOline touchscreen and Siemens 840D sl underneath. Linear scales come standard in the traveling column axes (X1/Y1/Z1) and the X2 turret axis, with optional scales in Y2/Z2 and Z3. Footprint is 10.2 square meters. At $400,000-$580,000 configured, it competes directly with the Mazak Integrex i-200, Okuma Multus B250II, and Doosan SMX 2600. Shops doing aerospace, medical, or energy components get the most value here.
Specs sourced from DMG Mori published data and press materials.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 500 mm (19.7 in) swing / 340 mm (13.4 in) machining |
| Max Turning Length | 1,185 mm (46.7 in) |
| Max X Axis Travel | 490 mm (19.3 in) |
| Max Y Axis Travel | 250 mm (9.8 in) total / ±125 mm |
| Max Z Axis Travel | 1,200 mm (47.2 in) |
| Bar Capacity | 102 mm (4.0 in) |
| Main Spindle Speed | 5,000 RPM |
| Main Spindle Power | 33 kW (44.2 hp) |
| Main Spindle Torque | 580 Nm |
| Sub Spindle Speed | 6,000 RPM (optional) |
| Sub Spindle Power | 25 kW (33.5 hp) |
| Turn Mill Spindle Speed | 12,000 / 20,000 RPM (optional high-speed) |
| Turn Mill Spindle Power | 22 kW (29.5 hp) |
| Turn Mill Spindle Torque | 120 Nm |
| Turn Mill Spindle Interface | HSK-A63 (optional Capto C6) |
| B Axis Swivel | ±120° (240° total), Direct Drive |
| Y Axis Travel | ±125 mm (9.8 in total) |
| Tool Magazine | 24 standard / 48 / 80 (HSK-A63) |
| Lower Turret | 12 or 16 driven stations (VDI40), DirectDrive 10,000 RPM (4A variant) |
| Rapid Traverse Rate | 40 / 40 / 50 m/min (X/Y/Z), 60 m/min Z with linear drive |
| Positioning Accuracy | <6 µm (with linear scales) |
| CNC Control | CELOS with Siemens 840D sl, 21.5" ERGOline |
| Machine Weight | ~8,000 kg (17,637 lb) |
| Floor Space | 10.2 m² |
| Developer | Apple |
| Popularity | 4.2|3419Votes |
| Manufacturer | DMG Mori |
| Model | CTX BETA 1250 |
| Spindle Bore | 93.98 mm |
Specifications sourced from machinio.com — verified 2026-03-28
Strengths & Limitations
Strengths
- compactMASTER B-axis milling head is only 350 mm long with a 70 mm bearing diameter, giving more clearance inside the work envelope than competing designs
- 102 mm bar capacity handles larger stock than most turn-mill centers in this size class, including the Mazak Integrex i-200 at 65 mm
- B-axis Direct Drive with ±120 degrees of continuous swivel (240 degrees total) outranges the typical ±110 degrees on competing platforms
- 250 mm total Y-axis travel provides more off-center machining flexibility than earlier generations and most competitors in this frame size
- 4A variant adds a second tool carrier (12 or 16 VDI40 driven stations at 10,000 RPM), enabling parallel processing for production environments
- Linear scales standard in traveling column axes, with optional scales on turret and counter spindle axes for sub-6-micrometer positioning
- Tool magazine expandable to 80 stations via chain magazine for long unattended runs with HSK-A63 or Capto C6 interfaces
Limitations
- Starting above $400K, it's a significant investment compared to separate lathe and mill setups that might total $250K-$300K
- DMG Mori service and parts costs run higher than Japanese competitors like Mazak or Okuma, and some owners report slow parts availability
- 5,000 RPM main spindle is slower than some competitors, limiting high-speed small-diameter turning in aluminum or brass
- Programming complexity for simultaneous 5-axis turn-mill work requires experienced operators or strong CAM support from packages like Esprit or hyperMILL
- 8,000 kg machine weight and 10.2 m² footprint demand solid foundation and floor space planning
Best For
Frequently Asked Questions
01
A new CTX beta 1250 TC starts around $400,000 in base configuration. Adding sub-spindle, high-speed milling spindle, expanded tool magazine, and automation can push the price to $500,000-$580,000. Used machines from 2010-2015 sell in the $120,000-$250,000 range depending on hours and configuration.
02
The gamma is the higher-spec model with a larger, more powerful main spindle, heavier construction, and higher torque ratings. The beta targets mid-range production with its 33 kW / 580 Nm main spindle, while the gamma steps up for heavier cutting. Both share the compactMASTER B-axis head and CELOS interface.
03
The 4A adds a second tool carrier below the main spindle. It's a turret with 12 or 16 driven VDI40 stations and a DirectDrive at 10,000 RPM, plus its own Y-axis stroke. This lets you run parallel processing where the turret handles roughing or secondary operations while the compactMASTER does finish work. It's aimed at serial production rather than job shop flexibility.
04
Both are B-axis turn-mill centers in a similar size range. The DMG Mori has a larger turning length (1,185 vs 1,010 mm) and bigger bar capacity (102 vs 65 mm). The Mazak offers MAZATROL conversational programming that's faster for short runs. Service networks are comparable in North America. Pricing is similar, with the CTX beta often slightly higher.
05
It runs CELOS, DMG Mori's touchscreen interface on a 21.5-inch ERGOline panel, with a Siemens 840D sl CNC underneath. CELOS handles job management, tool tracking, and process monitoring while the Siemens handles G-code execution. Older models (pre-2013) used Siemens 840D with DMG's older ERGOline interface.
06
Yes. If you don't need the B-axis milling head, you can run the lower turret with up to 16 VDI40 driven tools for standard turning, drilling, and live tooling work. Many shops buy the TC configuration for flexibility but run 70-80% straight turning jobs on it.
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