DMG Mori CMX 70 U

$420,000 - $560,000 Updated 2026-03-16

Key Specifications

Rapid Traverse

30 m/min (X/Y/Z)

Spindle Power

18.5 kW (24.8 hp)

Max Workpiece ⌀

900 mm (35.4 in)

table diameter

700 mm (27.6 in)

max workpiece height

600 mm (23.6 in)

max workpiece weight

600 kg (1,323 lb)

Overview

The DMG Mori CMX 70 U is the larger sibling of the CMX 50 U, stepping up the swivel rotary table to 700 mm in diameter to accommodate heavier and taller workpieces. Maximum workpiece diameter extends to 900 mm (35.4 in) with a height of 600 mm (23.6 in) and a load capacity of 600 kg (1,323 lb), placing it firmly in the territory of mid-to-large aerospace brackets, energy sector components, and heavy mold inserts. The machine uses the same trunnion-style B+C axis arrangement as the CMX 50 U, keeping fixturing simple and chip flow unrestricted during deep-pocket operations.

The spindle on the CMX 70 U steps up to 18.5 kW (24.8 hp) at 10,000 RPM standard, with optional 12,000 or 15,000 RPM variants. Torque reaches 200 Nm through an HSK-A63 interface, providing substantially more cutting force than the CMX 50 U for harder materials and larger diameter tooling. X/Y/Z travels of 800 × 700 × 550 mm give a noticeably larger working envelope, opening up parts that a 500 mm table machine simply cannot reach in a single setup. The standard 40-tool magazine is expandable to 80 tools for extended unattended runs.

Direct Drive motors power both the B-axis (±110° swivel) and C-axis (360° continuous), providing the angular accuracy and responsiveness needed for complex simultaneous contouring. The larger casting and additional mass of the CMX 70 U contribute to better vibration damping during heavy roughing compared to smaller 5-axis platforms. Roller guideways on all linear axes balance rigidity with rapid traverse capability at 30 m/min.

The CMX 70 U runs CELOS on a 21.5-inch ERGOline touchscreen with Siemens 840D sl. At $420,000–$560,000 configured, it competes with the Mazak Variaxis i-700, Okuma MU-630V, and DMG Mori's own DMU 65 Monoblock. For shops that have outgrown a 500 mm table but are not yet ready to step up to a full Duoblock or gantry machine, the CMX 70 U hits a productive middle ground of capacity and cost.

Full Specifications

Parameter	Value
Table Diameter	700 mm (27.6 in)
Max Workpiece Diameter	900 mm (35.4 in)
Max Workpiece Height	600 mm (23.6 in)
Max Workpiece Weight	600 kg (1,323 lb)
X Axis Travel	800 mm (31.5 in)
Y Axis Travel	700 mm (27.6 in)
Z Axis Travel	550 mm (21.7 in)
B Axis Swivel	±110°
C Axis Rotation	360° (continuous)
Spindle Speed	10,000 RPM (12,000 / 15,000 RPM optional)
Spindle Motor Power	18.5 kW (24.8 hp)
Spindle Torque	200 Nm
Spindle Interface	HSK-A63
Tool Magazine	40 tools standard (80 optional)
Rapid Traverse Rate	30 m/min (X/Y/Z)
CNC Control	CELOS with Siemens 840D sl, 21.5" ERGOline
Machine Weight	~10,500 kg (23,149 lb)
1050 Mm	41.3 in.
1100 Mm	43.3 in.
1070 Mm	42.1 in.
1000 Mm	39.4 in.
1000 Kg	2204.6 lbs.

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

Strengths & Limitations

Strengths

700 mm table and 900 mm workpiece diameter capacity handle larger parts that a 500 mm table machine cannot reach in a single setup, reducing part handling and re-fixturing errors
18.5 kW / 200 Nm spindle provides significantly more cutting force than the CMX 50 U, enabling heavier roughing passes in steel, stainless, and titanium
600 kg table load capacity suits heavier castings, forgings, and weldments common in energy, oil-and-gas, and large aerospace structural work
Direct Drive B and C axes eliminate gear backlash for consistent angular accuracy across long production runs without periodic calibration

Limitations

At over 10,500 kg, the CMX 70 U requires a reinforced floor slab and careful site preparation, adding to installation cost and lead time
10,000 RPM base spindle speed is lower than some competitors in this size class; shops doing high-speed aluminum machining may prefer the optional 15,000 RPM version
DMG Mori service costs and parts pricing are higher than Mazak and Okuma in many markets, a real consideration when evaluating total cost of ownership

Best For

Aerospace suppliers machining large structural brackets, frames, and housings from aluminum billet and titanium forgings in a single 5-axis setup Energy and oil-and-gas shops producing valve bodies, pump housings, and manifolds with complex ported geometry that benefits from full 5-axis access Mold and die shops machining large cavity blocks and inserts requiring 5-axis tool tilting to reach undercuts and steep sidewalls Job shops serving the defense sector that need a mid-range 5-axis platform flexible enough to run both short-run prototype and production contracts

Frequently Asked Questions

01 What does a DMG Mori CMX 70 U cost?

A new CMX 70 U starts around $420,000 in base configuration. Configuring with high-speed spindle, expanded 80-tool magazine, probing, through-spindle coolant, and Renishaw on-machine measurement typically brings the total to $500,000–$560,000. Used units from 2016–2021 trade in the $150,000–$260,000 range.

02 What is the difference between the CMX 70 U and the DMU 65 Monoblock?

The DMU 65 Monoblock is a higher-spec machine built on DMG Mori's monoBLOCK architecture with greater rigidity, higher accuracy specifications, and access to the full FD (floor disc) and duoblock upgrade path. The CMX 70 U is positioned as a more cost-effective route to 700 mm class 5-axis machining. If tolerances are consistently under 5 µm or the workload involves heavy titanium, the DMU 65 Monoblock is worth the additional investment.

03 How does the CMX 70 U compare to the Mazak Variaxis i-700?

Both are 700 mm class trunnion-table 5-axis machines in a similar price band. The Mazak Variaxis i-700 runs MAZATROL conversational programming, which is faster for short-run and mixed production. The CMX 70 U uses Siemens 840D sl with CELOS, preferred in shops standardized on Siemens. Structurally both are capable machines; the decision usually comes down to control preference, CAM integration, and dealer service proximity.

04 Can the CMX 70 U do 5-axis simultaneous machining?

Yes. The Direct Drive B and C axes combined with Siemens 840D sl support full 5-axis simultaneous contouring. The machine handles aerospace-grade surface blending, turbine blade profiles, and complex medical geometries that require constant tool-normal orientation. CAM packages including hyperMILL, Mastercam, and Siemens NX all provide proven post-processors for this platform.

05 What is the maximum workpiece weight on the CMX 70 U?

The standard table load is 600 kg (1,323 lb). This is sufficient for most aerospace and industrial components in this size range. For heavier workpieces — typically above 800–1,000 kg — DMG Mori's DMU P series (Duoblock) or DMF portal machines are the appropriate step up.