Mazak SLANT TURN 500

$220,000 - $380,000 Updated 2026-03-19

Key Specifications

Max Spindle

1,800 RPM

Spindle Taper

A2-15

Spindle Power

37 kW (50 hp)

chuck size

From 21"

max turning diameter

910 mm (35.83 in)

max turning length short

1,047 mm (41.22 in)

Overview

The Mazak SLANT TURN 500 is a heavy-duty horizontal CNC lathe built for turning large-diameter workpieces up to 910 mm (35.83 in) with an 18-inch minimum chuck and a generous 185 mm (7.28 in) spindle bore. The ST-500 sits at the core of the SLANT TURN family, providing the turning capacity and torque demanded by oil and gas, power generation, and heavy equipment manufacturing.

The main spindle delivers 37 kW (50 hp) at up to 1,800 RPM with massive torque output for aggressive roughing of steel, stainless, and cast iron at large diameters. The 7.28-inch spindle bore is a key specification, allowing through-spindle feeding of large-diameter bar, pipe, and tubular stock without the need for external support. Maximum turning lengths range from 1,047 mm (41.22 in) on the short bed up to 4,064 mm (160 in) on the extra-long bed, with intermediate configurations at 2,040 mm (80.31 in) and 3,175 mm (125 in).

The slant-bed construction provides exceptional rigidity and chip evacuation under the heavy cutting loads typical of large-diameter turning. A 12-station disc turret handles standard turning tools, and the tailstock with programmable hydraulic quill supports long shaft work. Optional steady rests extend capability for slender, long workpieces.

MAZATROL SmoothG handles programming with conversational cycles that simplify setup for complex contours and thread cutting on large parts. The combination of 18-inch chuck, big bore, high torque, and four bed length options makes the SLANT TURN 500 extremely versatile for shops machining a wide range of large cylindrical components.

New SLANT TURN 500 machines price between $220,000 and $380,000 depending on bed length. Used units from 2008-2022 trade between $80,000 and $220,000. The ST-500 competes with the Okuma LB45 II, Doosan Puma 600, and DMG Mori NLX 6000.

Full Specifications

Parameter	Value
Chuck Size	From 21"
Max Turning Diameter	910 mm (35.83 in)
Max Turning Length Short	1,047 mm (41.22 in)
Max Turning Length Medium	2,040 mm (80.31 in)
Max Turning Length Long	3,175 mm (125 in)
Max Turning Length Xl	4,064 mm (160 in)
Max Spindle Speed	1,800 RPM
Spindle Motor Power	37 kW (50 hp)
Spindle Bore	185 mm (7.28 in)
Spindle Taper	A2-15
Tool Stations	12 (disc turret)
Bar Capacity	185 mm (7.28 in)
X Axis Travel	370 mm (14.57 in)
Z Axis Travel	1,100 - 4,100 mm (43.31 - 161.42 in)
Rapid Traverse X	20 m/min (787 ipm)
Rapid Traverse Z	15 m/min (591 ipm)
Tailstock	Hydraulic, programmable quill
CNC Control	MAZATROL SmoothG
Machine Weight	11,000 kg (24,251 lb) approx.
Max Torque	5163 ft･lbs
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

7.28-inch spindle bore allows through-spindle feeding of large pipe and tubular stock without external support
35.83-inch max turning diameter handles flanges, valve bodies, and large castings in a single setup
Four bed length options from 41 to 160 inches provide flexibility for short chucking work to long shafts
37 kW spindle delivers massive torque for aggressive roughing at large diameters in steel and cast iron
Slant-bed construction ensures excellent chip evacuation and rigidity under heavy cutting loads
MAZATROL SmoothG conversational control simplifies programming of complex contours and threads

Limitations

1,800 RPM max spindle speed limits surface speed on smaller-diameter features within the envelope
11,000 kg machine weight requires reinforced concrete foundation and overhead crane for installation
No sub-spindle or Y-axis capability; complex parts requiring milling need the 500M variant
Long-bed configurations significantly increase floor space requirements and machine cost

Best For

Oil and gas manufacturers turning large pipe fittings, valve bodies, flanges, and wellhead components Power generation shops machining large shafts, turbine components, and generator housings Heavy equipment manufacturers producing hydraulic cylinders, large bearing housings, and structural rings Pipe and tube processing shops needing 7-inch-plus through-spindle bore for large-diameter tubular work Job shops specializing in large-diameter turning that need multiple bed length options for versatility

Frequently Asked Questions

01 What does a new Mazak SLANT TURN 500 cost?

New pricing ranges from $220,000 for the short-bed configuration to $380,000 for the extra-long bed with full options. Each step up in bed length adds approximately $30,000-$50,000. Used units from 2008-2022 trade between $80,000 and $220,000.

02 SLANT TURN 500 vs 500M: what does the M add?

The 500M adds milling capability with a live tooling turret for cross-drilling, tapping, and contour milling on the turned workpiece. The standard 500 is a pure turning machine. The M variant adds $40,000-$60,000 to the price.

03 What bed length should I choose?

Match bed length to your longest typical part plus 6-8 inches of clearance. Short bed (41 in) for flanges and short chucking. Medium (80 in) for most shaft work. Long (125 in) for drive shafts and long pipes. Extra-long (160 in) for the longest applications.

04 Can the SLANT TURN 500 handle pipe work?

Yes, the 7.28-inch spindle bore is specifically designed for through-spindle pipe and tubular work. This is one of the largest bores available in this class of CNC lathe, accommodating pipe up to approximately 7 inches in diameter.