Monforts DNC 500

Specs verified 2026-10-05 · monforts-wzm.de Updated 2026-10-05

Image: monforts-wzm.de, Monforts

Key Specifications

Max Turn Length

600 mm (23.6 in)

versions

DuoTurn

swing over bed

560 mm (22.0 in)

swing over cross slide

390 mm (15.4 in)

spindle nose

A8 (DIN 55026)

draw tube inner diameter

86 mm (3.4 in)

How much does the Monforts DNC 500 cost?

Price estimate

Uncertain

We do not have a price for the Monforts DNC 500 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

Two spindles face each other and two turrets work between them: the Monforts DNC 500 DuoTurn is a counter-spindle CNC lathe that Monforts describes as two turning machines integrated in one compact concept. Turning length is 600 mm (23.6 in), with 560 mm (22.0 in) of swing over the bed and 390 mm (15.4 in) over the cross slide.

The machine works in two ways. In compound operation the part is turned, drilled or milled on one side, handed from one spindle to the other and finished from the back without an operator touching it. In single machine operation each side runs its own job independently. Monforts gives each side its own hydrostatic guide system and states that the two do not influence each other, which is the point of the layout: a heavy cut on one spindle should not show up in the finish on the other.

Unlike the RNC DuoTurn models, where the counter spindle is the smaller of the two, the DNC 500 table gives a single spindle specification: an A8 nose, a draw tube of 86 mm (3.4 in) inside diameter and 4,000 rpm. With Siemens the drive is 28 kW (37.5 hp) at 100% ED and 434 Nm (320 lb-ft); with Fanuc it is 18.5 kW (24.8 hp) and 346 Nm (255 lb-ft).

Both turrets are 12 x VDI 40 and tool drive on both is standard, with 12 driven tools at up to 4,000 rpm. Driven tool power is 12 kW (16.1 hp) with Siemens and 13.7 kW (18.4 hp) with Fanuc at 25% ED. The table lists no Y-axis and no optional versions at all, so what is printed is the machine.

Full Specifications

Parameter	Value
Versions	DuoTurn
Max Turning Length	600 mm (23.6 in)
Swing Over Bed	560 mm (22.0 in)
Swing Over Cross Slide	390 mm (15.4 in)
Spindle Nose	A8 (DIN 55026)
Draw Tube Inner Diameter	86 mm (3.4 in)
Spindle Power Siemens	28 kW (37.5 hp) at 100% ED
Spindle Speed Max Siemens	4,000 rpm
Spindle Power Fanuc	18.5 kW (24.8 hp) at 100% ED
Spindle Speed Max Fanuc	4,000 rpm
Spindle Torque Siemens	434 Nm (320 lb-ft)
Spindle Torque Fanuc	346 Nm (255 lb-ft)
Turret Stations	12 x VDI 40
Driven Tools	12
Driven Tool Power Siemens	12 kW (16.1 hp) at 25% ED
Driven Tool Power Fanuc	13.7 kW (18.4 hp) at 25% ED
Driven Tool Speed Max Siemens	4,000 rpm
Driven Tool Speed Max Fanuc	4,000 rpm

Specifications sourced from monforts-wzm.de — verified 2026-10-05

Strengths & Limitations

Strengths

Two spindles and two 12 x VDI 40 turrets for finishing both sides of a part without operator intervention
Tool drive on both turrets is standard, with 12 driven tools at up to 4,000 rpm
Two independent hydrostatic guide systems that, as Monforts states, do not influence each other
A8 nose and 86 mm (3.4 in) draw tube with 28 kW (37.5 hp) at 100% ED on Siemens
Can run as two separate machines in single machine operation

Limitations

Turning length is 600 mm (23.6 in), so it is a chucker and short-shaft machine
The table lists no Y-axis for the DNC 500
With Fanuc the main drive drops to 18.5 kW (24.8 hp) and 346 Nm (255 lb-ft)
Swing over the cross slide is 390 mm (15.4 in), less than the 425 mm (16.7 in) of the RNC 500

Best For

Series production of parts machined on both sides in one cycle Chuck parts within 390 mm (15.4 in) of swing over the cross slide Two different jobs running side by side in single machine operation Turned parts with drilled and milled features from the driven turrets

Frequently Asked Questions

01 What is the Monforts DNC 500 DuoTurn?

A CNC lathe with two spindles and two tool turrets. Monforts describes it as two high-performance turning machines in one compact machine: the right and left sides of the workpiece are turned, drilled or milled without operator intervention. Turning length is 600 mm (23.6 in) and swing over the bed 560 mm (22.0 in).

02 How does the DNC 500 differ from an RNC 500 DuoTurn?

The RNC 500 DuoTurn is a 1,000 mm (39.4 in) lathe with an A8 main spindle and a smaller A6 counter spindle. The DNC 500 has 600 mm (23.6 in) of turning length, two turrets with tool drive as standard, and a separate hydrostatic guide system for each side.

03 What are the spindle ratings?

The table gives an A8 nose to DIN 55026, a draw tube of 86 mm (3.4 in) inside diameter and 4,000 rpm. With Siemens the drive is 28 kW (37.5 hp) at 100% ED with 434 Nm (320 lb-ft) of maximum torque. With Fanuc it is 18.5 kW (24.8 hp) and 346 Nm (255 lb-ft).

04 Are driven tools standard on the DNC 500?

Yes. Monforts lists tool drive on both turrets as standard. Each turret is 12 x VDI 40 with 12 driven tools, rated 12 kW (16.1 hp) with Siemens or 13.7 kW (18.4 hp) with Fanuc at 25% ED, and up to 4,000 rpm with either control.

05 Can the two sides of the DNC 500 work separately?

Yes. Monforts describes two modes. In compound operation workpieces are transferred from one spindle to the other. In single machine operation each side works independently of the other, so two different parts can be in the cut at once.