Mazak Slant Turn

$250,000 - $550,000 Updated 2026-03-13

Key Specifications

Max Spindle

1,600 RPM

Tool Capacity

12-position turret

Weight

12,000 kg - 22,000 kg (26,455 lb - 48,502 lb)

Rapid Traverse

15 m/min X, 15 m/min Z

Spindle Power

45 kW (60 hp)

Max Workpiece ⌀

910 mm (35.83 in)

Overview

The Mazak Slant Turn is Yamazaki Mazak's heavy-duty large-bore CNC turning center series, built for shops that need to swing big parts with serious cutting power. Available in 500, 550, and 600 sizes with 18 and 21-inch chucks, the Slant Turn handles workpieces that standard production lathes simply cannot accommodate.

The Slant Turn 500 runs an 18-inch chuck with spindle bore options up to 185 mm (7.28 in). The 550 and 600 step up to 21-inch chucks with spindle bores up to 275 mm (10.83 in) and 375 mm (14.76 in) respectively. Max turning diameter is 910 mm (35.83 in) across all models, and turning lengths range from 1,016 mm (40 in) to 4,099 mm (161.38 in) depending on bed configuration.

The spindle motor delivers 45 kW (60 hp) with maximum torque of 7,000 Nm (5,163 ft-lbs), enough to take heavy cuts in large steel forgings, castings, and pipe without stalling. The M variants add live tooling for on-machine milling, drilling, and tapping to reduce secondary operations on large parts.

MAZATROL SmoothG handles programming and operation. On a machine this size, conversational programming is particularly valuable because CAM programming for large turned parts often takes longer than describing the geometry to the control.

The Slant Turn competes with the Okuma LU/LB7000 series, Doosan Puma 4000/5100, and Hwacheon Hi-Tech 550/700. Pricing starts around $250,000 and climbs past $500,000 for long-bed M configurations. For shops turning large-diameter work, the Slant Turn's combination of swing, bore, power, and rigidity is hard to match. Specs sourced from Mazak Corporation published data.

Full Specifications

Parameter	Value
Chuck Size	From 21"
Max Workpiece Diameter	910 mm (35.83 in)
Max Turning Length	1,016 mm - 4,099 mm (40 in - 161.38 in)
Max Spindle Speed	1,600 RPM
Spindle Motor Power	45 kW (60 hp)
Max Torque	5163 ft･lbs
Spindle Bore	185 mm - 375 mm (7.28 in - 14.76 in)
Tool Capacity	12-position turret
Steady Rest Capacity	410 mm (16.14 in)
Tailstock Quill	250 mm (9.84 in)
X Axis Travel	385 mm (15.16 in)
Z Axis Travel	1,050 mm - 4,150 mm (41.3 in - 163.4 in)
Rapid Traverse Rate	15 m/min X, 15 m/min Z
Machine Weight	12,000 kg - 22,000 kg (26,455 lb - 48,502 lb)
CNC Control	MAZATROL SmoothG
Main Spindle Power	45 kW（60 HP）
Max Machining Diameter	Φ35.83"
Max Machining Length	80.47" / 125.16" / 160.16"

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

Strengths & Limitations

Strengths

910 mm (35.83 in) max turning diameter handles work standard lathes cannot
45 kW spindle with 7,000 Nm torque takes heavy cuts without stalling
Spindle bore options up to 375 mm for through-bore pipe and tube work
Turning lengths up to 4,099 mm for long shaft and roll work
M variants add live tooling to reduce large-part secondary operations
Steady rest capacity of 410 mm supports large flexible workpieces
MAZATROL SmoothG is efficient for programming large turned parts

Limitations

Starting at $250K and reaching $550K+, a major capital investment
Machine weight of 12,000-22,000 kg demands reinforced foundations
1,600 RPM max spindle speed limits surface speed on small diameters
15 m/min rapid traverse adds cycle time on long non-cutting moves
Substantial floor space requirements for long-bed configurations

Best For

Oil and gas component manufacturers turning large pipe, flanges, and valve bodies Power generation shops producing turbine shafts and generator components Mining and heavy equipment manufacturers turning pins, shafts, and rollers Steel mill roll turning and reconditioning operations Aerospace landing gear and structural component work on large forgings

Frequently Asked Questions

01 What does a new Mazak Slant Turn cost?

New pricing starts around $250,000 for a standard-bed ST-500 and can exceed $550,000 for a long-bed ST-600M.

02 Difference between ST-500, ST-550, and ST-600?

Same 910 mm max turning diameter and 45 kW spindle. Difference is spindle bore: ST-500 = 185 mm, ST-550 = 275 mm, ST-600 = 375 mm. The 550 and 600 use 21-inch chucks vs 18-inch on the 500.

03 Can it handle through-bore work?

Yes. Spindle bore options up to 375 mm on the ST-600 allow through-bore turning of pipe, tube, and hollow parts.

04 What foundation is needed?

Machine weight ranges from 12,000 to 22,000 kg. You need reinforced concrete designed for static weight plus dynamic cutting forces.

05 Slant Turn vs Okuma LU7000?

Both are top-tier heavy-duty turning centers. Mazak offers larger spindle bore options and MAZATROL programming. Okuma provides OSP control with THINC API. Performance is comparable.