Yamazaki Mazak CNC Lathes / Turning Centers

Mazak Quick Turn Nexus 550-II

Est. $420,000 – $620,000 Possible older model Specs verified 2026-03-28 · machinetools.com Updated 2026-10-02

This model was not found in Yamazaki Mazak's current lineup when we checked on 2026-09-24 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.

Key Specifications

Max Spindle

1,500 RPM

Tool Capacity

12-position VDI 80 turret

Spindle Power

45 kW (60 hp) at 25% ED; 30 kW (40 hp) continuous

Max Turn Length

1,800 mm (70.87 in)

max turning diameter

830 mm (32.68 in)

swing over bed

46.33"

How much does the Mazak Quick Turn Nexus 550-II cost?

Estimated price range

Est.$420,000 – $620,000

Our best estimate for a cnc lathes / turning center in this class — not a quote from Yamazaki Mazak. Configuration moves it a long way.

Overview

The Mazak Quick Turn Nexus 550-II is a large turning center, listed with a 610 mm (24 in) chuck on an A2-15 spindle nose, 1,800 mm (70.87 in) of maximum turning length and a machine weight of 22,000 kg (48,502 lb). It is not in Mazak's current lineup, so this page is mainly a reference for a machine met second-hand. Its figures are listed figures, to be confirmed from the machine's own plate and manual.

On those figures the working envelope is generous. Swing over the bed is listed at 46.33", bar capacity at 12.5", X travel at 475 mm (18.7 in) and Z travel at 1,855 mm (73.0 in). The turret is a 12-position VDI 80 type, so tooling is a size up from the smaller machines of the range. Rapid traverse is listed at 20 m/min (787 ipm) in X and 25 m/min (984 ipm) in Z.

Spindle torque is listed at 4,800 Nm (3,540 ft-lb) at 25% ED. For scale, the Quick Turn Nexus 450MY is listed at 2,450 Nm (1,807 ft-lb) at the same 25% ED rating, with an 18" chuck and a weight of 14,500 kg (31,967 lb). The 550-II is the heavier-duty machine by a wide margin.

Some of the table cannot be used as it stands. The listed rows disagree with each other on top spindle speed, on motor power, on maximum turning diameter and on which control is fitted. Those four points are left out here and should be settled on the machine itself before it is judged for a job.

Full Specifications

Parameter	Value
Max Turning Diameter	830 mm (32.68 in)
Max Turning Length	1,800 mm (70.87 in)
Swing Over Bed	46.33"
Max Spindle Speed	1,500 RPM
Spindle Motor Power	45 kW (60 hp) at 25% ED; 30 kW (40 hp) continuous
Spindle Torque	4,800 Nm (3,540 ft-lb) at 25% ED
Spindle Nose	A2-15
Chuck Size	610 mm (24 in)
Bar Capacity	12.5"
Tool Capacity	12-position VDI 80 turret
X Axis Travel	475 mm (18.7 in)
Z Axis Travel	1,855 mm (73.0 in)
Rapid Traverse X	20 m/min (787 ipm)
Rapid Traverse Z	25 m/min (984 ipm)
Machine Weight	22,000 kg (48,502 lb)
CNC Control	MAZATROL SmoothG CNC
Brand	MAZAK
CNC Control	CNC (Mazatrol Matrix Nexus 2)

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

Strengths & Limitations

Strengths

Listed 610 mm (24 in) chuck on an A2-15 spindle nose
Listed spindle torque of 4,800 Nm (3,540 ft-lb) at 25% ED
Maximum turning length listed at 1,800 mm (70.87 in), with 1,855 mm (73.0 in) of Z travel
12-position VDI 80 turret for large tool shanks
Listed bar capacity of 12.5" and a 46.33" swing over the bed

Limitations

Not in Mazak's current lineup
The listed rows conflict on spindle speed, motor power, maximum turning diameter and control
A listed weight of 22,000 kg (48,502 lb) calls for heavy rigging and a checked foundation
Listed X rapid of 20 m/min (787 ipm) is slower than the 25 m/min (984 ipm) of the Quick Turn Nexus 450MY

Best For

Large-diameter chucking work in a 610 mm (24 in) chuck Heavy shafts up to the listed 1,800 mm (70.87 in) turning length High-torque roughing, with 4,800 Nm (3,540 ft-lb) listed at 25% ED Large bar and tube within the listed 12.5" bar capacity

Frequently Asked Questions

01 Is the Quick Turn Nexus 550-II still in Mazak's lineup?

No, it is not in Mazak's current lineup. Anyone considering one is looking at an existing machine, so the figures that matter are those on its own plate and in its manual. The listed figures on this page are a starting point for that check.

02 What size work is listed for the Quick Turn Nexus 550-II?

The listed figures are a 610 mm (24 in) chuck, 1,800 mm (70.87 in) of maximum turning length, a 46.33" swing over the bed and a 12.5" bar capacity. X travel is listed at 475 mm (18.7 in) and Z travel at 1,855 mm (73.0 in).

03 How much spindle torque is listed?

4,800 Nm (3,540 ft-lb) at 25% ED, on an A2-15 spindle nose. That is an intermittent rating. The Quick Turn Nexus 450MY is listed at 2,450 Nm (1,807 ft-lb) at 25% ED, so on the same rating the 550-II has close to twice the torque.

04 What should be checked on a Quick Turn Nexus 550-II before buying?

Start with the points where the listed rows disagree: top spindle speed, motor power, maximum turning diameter and the control fitted. Then check the tooling, since the turret is listed as a 12-position VDI 80 type, and the site, since the listed weight is 22,000 kg (48,502 lb).