Mazak SLANT TURN 450

$180,000 - $300,000 Updated 2026-03-19

Key Specifications

Max Spindle

2,500 RPM

Spindle Taper

A2-11

Spindle Power

30 kW (40 hp)

Max Turn Length

1,000 - 3,000 mm (39.37 - 118.11 in)

chuck size

From 21"

max turning diameter

650 mm (25.59 in)

Overview

The Mazak SLANT TURN 450 is a heavy-duty horizontal CNC lathe designed for large-diameter turning of shafts, pipes, flanges, and heavy castings. The SLANT TURN series is Mazak's dedicated platform for big-bore, high-torque turning work that exceeds the capacity of the Quick Turn lineup, and the 450 is the entry point into this heavy-duty family.

The SLANT TURN 450 features a 15-inch (381 mm) chuck with a spindle bore of approximately 145 mm (5.71 in), providing substantial bar-through capacity for pipe and tubular work. Maximum turning diameter reaches 650 mm (25.59 in) with turning lengths available in multiple bed configurations from 1,000 mm (39.37 in) up to 3,000 mm (118.11 in). The main spindle delivers 30 kW (40 hp) at up to 2,500 RPM with high torque output suited for aggressive roughing in steel, stainless, and cast iron.

The slant-bed design provides excellent chip evacuation and rigid tool support under heavy cutting loads. A 12-station turret with optional live tooling handles both turning and limited milling operations. The tailstock with programmable quill supports long shaft work, and optional steady rests extend capability for slender workpieces.

MAZATROL SmoothG provides conversational programming that simplifies setup for operators transitioning from smaller lathes. The combination of large bore, high torque, and multiple bed lengths makes the SLANT TURN 450 versatile across industries from oil and gas to power generation.

The SLANT TURN 450 competes with the Okuma LB45 II, Doosan Puma 480, and DMG Mori NLX 4000. New machines price between $180,000 and $300,000 depending on bed length and options. Used units from 2010-2022 trade between $60,000 and $180,000.

Full Specifications

Parameter	Value
Chuck Size	From 21"
Max Turning Diameter	650 mm (25.59 in)
Max Turning Length	1,000 - 3,000 mm (39.37 - 118.11 in)
Max Spindle Speed	2,500 RPM
Spindle Motor Power	30 kW (40 hp)
Spindle Bore	145 mm (5.71 in)
Spindle Taper	A2-11
Tool Stations	12 (turret)
Turret Type	Disc turret with optional live tooling
Bar Capacity	145 mm (5.71 in)
X Axis Travel	310 mm (12.20 in)
Z Axis Travel	1,050 - 3,050 mm (41.34 - 120.08 in)
Rapid Traverse X	20 m/min (787 ipm)
Rapid Traverse Z	20 m/min (787 ipm)
Tailstock	Hydraulic, programmable quill
CNC Control	MAZATROL SmoothG
Machine Weight	8,500 kg (18,739 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

15-inch chuck with 5.71-inch spindle bore handles large-diameter bar and pipe work beyond Quick Turn capacity
Multiple bed lengths from 39 to 118 inches accommodate a wide range of shaft and pipe lengths
30 kW spindle delivers strong torque for aggressive roughing in steel and cast iron at large diameters
Slant-bed design provides excellent chip evacuation and rigidity under heavy cutting loads
MAZATROL SmoothG conversational programming simplifies large-part setup and reduces operator learning curve
Programmable tailstock supports long shaft work with automatic quill positioning

Limitations

2,500 RPM spindle speed limits surface speed on smaller-diameter features within the work envelope
8,500 kg machine weight requires substantial foundation preparation and rigging for installation
No sub-spindle option means backworking requires rechucking or a second operation
Base turret lacks live tooling; milling upgrade adds cost for shops needing cross-drilling or flats

Best For

Oil and gas manufacturers turning large valve bodies, pipe fittings, and flanges in steel and stainless Power generation shops machining large shafts, couplings, and turbine components Heavy equipment manufacturers producing hydraulic cylinders, bearing housings, and large structural parts Job shops needing large-bore capacity for pipe and tubular work beyond 4-inch diameter Shops stepping up from Quick Turn 450 class machines that need more swing, bore, and turning length

Frequently Asked Questions

01 What does a new Mazak SLANT TURN 450 cost?

New pricing runs $180,000-$300,000 depending on bed length and options. Short-bed versions start lower; long-bed configurations with live tooling, steady rest, and high-pressure coolant push toward the upper range. Used units from 2010-2022 trade between $60,000 and $180,000.

02 SLANT TURN 450 vs SLANT TURN 500: what is the difference?

The SLANT TURN 500 steps up to an 18-inch chuck with a 7.28-inch spindle bore and 35.83-inch max turning diameter. The 450 uses a 15-inch chuck with 5.71-inch bore. Choose based on your maximum workpiece diameter and bar-through requirements.

03 Can the SLANT TURN 450 do milling?

With the optional live tooling turret, yes. The machine can perform cross-drilling, tapping, and flat milling. However, for heavy milling requirements, the SLANT TURN 450M or 500M variants are better suited with dedicated milling spindle capability.

04 What bed lengths are available?

The SLANT TURN 450 is available in multiple bed configurations ranging from approximately 1,000 mm to 3,000 mm of turning length. Choose based on your longest typical workpiece plus allowance for tooling clearance.