Hermle Mill-Turn / Multi-Tasking Machines

Hermle C 42 U MT

Est. $700,000 - $1,100,000 (new) Specs verified 2026-03-28 · machinetools.com Updated 2026-10-03

Key Specifications

Spindle Taper

HSK-A63

Rapid Traverse

60 m/min X/Y, 55 m/min Z

Accuracy

+/- 0.005 mm (0.0002 in)

Repeatability

+/- 0.003 mm (0.00012 in)

x axis travel

800 mm (31.5 in)

y axis travel

800 mm (31.5 in)

How much does the Hermle C 42 U MT cost?

Estimated price range

Est.$700,000 - $1,100,000 (new)

Our best estimate for a mill-turn / multi-tasking machine in this class — not a quote from Hermle. Configuration moves it a long way.

Overview

The Hermle C 42 U MT is a 5-axis mill-turn machining centre. In the listed figures its 800 mm (31.5 in) table swivels on the A-axis and also spins on the C-axis at up to 800 rpm for turning, so turned diameters and milled features can be cut in one clamping. Travels are 800 mm (31.5 in) in X and Y and 550 mm (21.7 in) in Z, and the table load capacity is 1,400 kg (3,086 lb).

The listed figures are unconfirmed, so use them to shortlist and check them on the machine in question. They show an HSK-A63 spindle at 18,000 rpm with 29 kW (39 hp) as standard and up to 42,000 rpm optional, an A-axis swivel of +/- 120 degrees (240 degrees total), 42 tool positions expandable to 252, and rapid traverse of 60 m/min in X/Y and 55 m/min in Z. Positioning accuracy is listed as +/- 0.005 mm (0.0002 in) and repeatability as +/- 0.003 mm (0.00012 in).

Several rows differ from the C 42 U MT GEN2. That model shows travels and table load to match, but the C 42 U MT GEN2 lists rapid traverse of X 45 (60), Y 45 (60), Z 40 (60) m/min and spindle options of 15,000 / 16,000 / 20,000 / 25,000 / 42,000 rpm, with no 18,000 rpm spindle among them. If you are looking at a particular machine, its spindle speed and rapid traverse will tell you which set of figures applies.

The listed machine weight is 14,000 kg (30,864 lb) on a mineral cast base, and the power supply is 400V, 3-phase, 50/60 Hz.

Full Specifications

Parameter	Value
X Axis Travel	800 mm (31.5 in)
Y Axis Travel	800 mm (31.5 in)
Z Axis Travel	550 mm (21.7 in)
A Axis Swivel	+/- 120 degrees (240 degrees total)
C Axis	360 degrees continuous (up to 800 rpm for turning)
Table Diameter	800 mm (31.5 in)
Table Load Capacity	1,400 kg (3,086 lb)
Spindle Speed	18,000 rpm (standard); up to 42,000 rpm optional
Spindle Motor	29 kW (39 hp) standard
Spindle Taper	HSK-A63
Tool Magazine	42 positions (expandable to 252)
Turning Speed	Up to 800 rpm on C-axis
Rapid Traverse Rate	60 m/min X/Y, 55 m/min Z
Positioning Accuracy	+/- 0.005 mm (0.0002 in)
Repeatability	+/- 0.003 mm (0.00012 in)
Machine Base	Mineral cast
CNC Control	Heidenhain TNC 640 or Siemens 840D sl
Machine Weight	14,000 kg (30,864 lb)
Power Supply	400V, 3-phase, 50/60 Hz
X	31.496"
Y	31.496"
Z	21.654"
Axis	5
ATC	42
CNC Control	CNC (Heidenhain TNC 640 / TNC7 / Siemens 840 D sl)

Specifications sourced from machinetools.com — verified 2026-03-28

Strengths & Limitations

Strengths

Turning at up to 800 rpm on the C-axis and 5-axis milling in the same clamping
Listed spindle of 18,000 rpm and 29 kW (39 hp) as standard, with up to 42,000 rpm optional
42 tool positions, expandable to 252
Listed rapid traverse of 60 m/min in X/Y and 55 m/min in Z
Table load capacity of 1,400 kg (3,086 lb) on an 800 mm (31.5 in) table

Limitations

Turning speed stops at 800 rpm on the C-axis, which limits surface speed on small diameters
The 42,000 rpm spindle is optional; the standard spindle is 18,000 rpm
No spindle torque is listed, for milling or for turning
Only HSK-A63 is listed as the taper, while the C 42 rows show HSK A 63 / HSK T 63 (MT variants), so check the interface on the machine itself
At 14,000 kg (30,864 lb), foundation and rigging need planning

Best For

Round parts that need both turned diameters and 5-axis milled features Workpieces up to 1,400 kg (3,086 lb) on the 800 mm (31.5 in) table Complete machining in one clamping where re-chucking would lose concentricity Jobs with many tools, drawing on a magazine expandable to 252 positions

Frequently Asked Questions

01 How fast can the table of the C 42 U MT turn?

The listed turning speed is up to 800 rpm on the C-axis, which is continuous through 360 degrees. On a part near the 800 mm (31.5 in) table diameter that is ample surface speed, but on small diameters 800 rpm is slow for carbide tooling, so check the diameters you actually turn.

02 What is the difference between the C 42 U MT and the C 42 U MT GEN2?

Travels and table load are listed the same on both: 800 mm (31.5 in) in X and Y, 550 mm (21.7 in) in Z and 1,400 kg (3,086 lb). The C 42 U MT GEN2 lists spindle options of 15,000 / 16,000 / 20,000 / 25,000 / 42,000 rpm and a Heidenhain TNC7 or Siemens SINUMERIK ONE control. The figures here show 18,000 rpm as the standard spindle and rapid traverse of 60 m/min in X/Y and 55 m/min in Z.

03 What spindle is listed for the C 42 U MT?

An HSK-A63 spindle at 18,000 rpm with a 29 kW (39 hp) motor as standard, and up to 42,000 rpm as an option. No torque is listed for either. The magazine has 42 positions and is expandable to 252.

04 How large a part can the C 42 U MT hold?

The table diameter is 800 mm (31.5 in) and the table load capacity is 1,400 kg (3,086 lb), within travels of 800 mm (31.5 in) in X and Y and 550 mm (21.7 in) in Z. The listed figures give no maximum workpiece diameter or height, so confirm the swing with the A-axis tilted before committing a part near the table size.