Yamazaki Mazak CNC Lathes / Turning Centers

Mazak QT-COMPACT 300

Est. $80,000 - $120,000 Possible older model Updated 2026-10-02

This model was not found in Yamazaki Mazak's current lineup when we checked on 2026-10-02 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.

Key Specifications

Max Spindle

4,500 RPM

Spindle Power

15 kW (20 hp)

max swing

380 mm (15.0 in)

max machining length

510 mm (20.1 in)

bar capacity

65 mm (2.56 in)

chuck size

8 in (A2-6 spindle nose)

How much does the Mazak QT-COMPACT 300 cost?

Estimated price range

Est.$80,000 - $120,000

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 QT-COMPACT 300 belongs to the largest of the three sizes in the QT-COMPACT turning center series. Mazak's model list for the series runs from the 100 to the 300 and gives four versions of each size, M, MY, MS and MSY, all with an L suffix: for this size the QT-COMPACT 300M L, 300MY L, 300MS L and 300MSY L. A plain 300 is not on that list, so read the table on this page as listed figures to confirm against the exact model being quoted.

Mazak describes the series as covering turning, milling, Y-axis machining and second spindle options. Every model has an integral spindle motor with no gears or belts in the drive, and the main spindle can index and contour as a C-axis in 0.0001° increments. The series turret is a 12 position drum with a milling function that indexes without lifting and holds each tool holder with four bolts; a 24 position turret is optional. Where a Y-axis is fitted its stroke is 100 mm (±50 mm), and the second spindle on the 200 and 300 sizes takes a 6 in chuck. The series control is MAZATROL SmoothC.

The listed figures are an 8 in chuck (A2-6 spindle nose), a 4,500 RPM spindle with 15 kW (20 hp) and 240 Nm (177 ft-lb), a swing of 380 mm (15.0 in), a machining length of 510 mm (20.1 in) and 65 mm (2.56 in) bar capacity. Listed weight is 3,500 kg (7,716 lb). Confirm the turret, control and floor space rows for the exact model, because the values listed for them differ from Mazak's series description.

Full Specifications

Parameter	Value
Max Swing	380 mm (15.0 in)
Max Machining Length	510 mm (20.1 in)
Bar Capacity	65 mm (2.56 in)
Chuck Size	8 in (A2-6 spindle nose)
Max Spindle Speed	4,500 RPM
Spindle Motor Power	15 kW (20 hp)
Spindle Torque	240 Nm (177 ft-lb)
Turret Stations	10 stations
Rapid Traverse X	20 m/min (787 ipm)
Rapid Traverse Z	24 m/min (945 ipm)
Tailstock	CNC-controlled programmable tailstock
Machine Weight	3,500 kg (7,716 lb)
Floor Space	1,900 x 1,500 mm (74.8 x 59.1 in)
CNC Control	MAZATROL SmoothG CNC

Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.

Strengths & Limitations

Strengths

Integral spindle motor with no gears or belts in the drive, on every model in the series
Main spindle works as a C-axis with indexing in 0.0001° increments, per Mazak's series description
Series options include a Y-axis with a 100 mm (±50 mm) stroke and a second spindle with a 6 in chuck on the 300 size
Listed 65 mm (2.56 in) bar capacity and 240 Nm (177 ft-lb) of spindle torque
Tool eye, automatic parts catcher and automatic workpiece measurement are described for the series

Limitations

Mazak's series list has no plain 300 model, only the 300M L, 300MY L, 300MS L and 300MSY L, so the listed table needs confirming
Listed spindle speed tops out at 4,500 RPM
Listed machining length is 510 mm (20.1 in), which limits shaft work

Best For

Chuck and bar work within the listed 65 mm (2.56 in) bar capacity Turned parts with milled features, using the series' C-axis and milling turret Robot-tended production with the L series safety functions

Frequently Asked Questions

01 Which QT-COMPACT 300 models does Mazak list?

Four: the QT-COMPACT 300M L, 300MY L, 300MS L and 300MSY L. The same four versions are listed for the 100 and 200 sizes. Mazak describes the lineup as covering turning, milling, Y-axis machining and second spindle options, so confirm which version a quotation refers to.

02 How much floor space does a QT-COMPACT need?

Mazak states that machines with the same universal need the same floor space. With the 500U universal, every model from the 100 series to the 300 series occupies 4.39 m² (2600 mm × 1690 mm). With the 1000U universal, the 200M, 200MY, 300M and 300MY occupy 5.96 m² (3385 mm × 1760 mm).

03 What spindle does the QT-COMPACT series use?

An integral spindle motor on every model. Mazak says gears and belts are not used, to avoid the vibration they cause, and that the main spindle also works as a C-axis with indexing in 0.0001° increments and contouring. The figures listed on this page for the QT-COMPACT 300 are 4,500 RPM, 15 kW (20 hp) and 240 Nm (177 ft-lb).

04 What setup and automation functions does Mazak describe for the series?

A tool eye that registers a tool when its tip touches the sensor, an automatic front door with three open and close speeds, an automatic parts catcher that carries finished workpieces to a parts box outside the machine, and automatic workpiece measurement with a turret-mounted touch sensor. The QT-COMPACT L series can also add safety fences and interlocks for robot systems.