Sodick Sodick AL40G+

$200,000 - $350,000 Updated 2026-03-19

Key Specifications

X Travel

400 mm (15.7 in)

Y Travel

300 mm (11.8 in)

Z Travel

270 mm (10.6 in)

max electrode weight

50 kg (110 lb)

max workpiece weight

550 kg (1,213 lb)

drive system

All-axis linear motor drive

Overview

The Sodick AL40G+ is a mid-size production sinker EDM from the AL-G Plus series, offering 400 x 300 x 270 mm X/Y/Z travel with all-axis linear motor drives. The plus designation indicates the latest generation of the AL-G platform, incorporating the new SP Power Supply with doubled motor control response speed, Arc-less 4 circuit technology, and the LN Pro AI machining condition adviser.

The AL40G+ supports a 50 kg maximum electrode weight and 550 kg maximum workpiece weight, positioning it squarely in the production mold and die segment. The Arc-less 4 circuit provides improved discharge control that delivers faster machining speeds while simultaneously reducing electrode wear, a combination that directly affects per-part cost in production sinker EDM operations.

Thermal displacement has been reduced by 50% versus conventional models through the TH COM precision correction function, which actively compensates for thermal drift during extended production burns. The LN Pro AI machining condition adviser uses machine learning to recommend optimal generator settings based on the electrode/workpiece material combination, cavity geometry, and desired surface finish, reducing skilled operator dependency.

The machine produces surface finishes ranging from satin to mirror quality on hardened tool steels. At 1,550 x 2,440 x 2,330 mm (including power supply and dielectric tank), the AL40G+ has a manageable footprint for production die and mold shops.

Full Specifications

Parameter	Value
X-Axis Travel	400 mm (15.7 in)
Y-Axis Travel	300 mm (11.8 in)
Z-Axis Travel	270 mm (10.6 in)
Max Electrode Weight	50 kg (110 lb)
Max Workpiece Weight	550 kg (1,213 lb)
Drive System	All-axis linear motor drive
Generator	SP Power Supply with Arc-less 4 circuit
Surface Finish	Satin to mirror finish capability
CNC Control	Sodick LQ controller with LN Pro AI adviser
Thermal Compensation	TH COM precision correction (50% thermal displacement reduction)
Machine Dimensions	1,550 x 2,440 x 2,330 mm (61 x 96.1 x 91.7 in) including power supply and dielectric tank
Dielectric	Oil dielectric
Axis Stroke Xyz	400 x 300 x 270
Max Weight Of Electrodekg	50
Max Weight Of Workpiecekg	550
Machine Tool Dimensions W X D X H	1550 x 2440 x 2330*1

Specifications sourced from sodick.co.jp — verified 2026-03-28

Strengths & Limitations

Strengths

SP Power Supply with doubled motor control response enables faster machining and finer generator resolution
Arc-less 4 circuit reduces electrode wear while increasing machining speed, lowering per-part cost
TH COM precision correction reduces thermal displacement by 50% for better accuracy on long burns
LN Pro AI machining condition adviser reduces skilled operator dependency on complex setups
50 kg electrode capacity covers the full range of production graphite and copper electrodes
400 x 300 mm X/Y travel handles mainstream injection mold cavities and die casting inserts

Limitations

Premium pricing over previous-generation AL40G reflects new SP Power Supply and AI technology
550 kg workpiece limit may restrict large mold base loading without supplemental support
Linear motor service requires Sodick-certified technicians
Oil dielectric system requires fire suppression and ventilation provisions

Best For

Injection mold shops producing mid-size cavities and core inserts for automotive and consumer products Die casting toolmakers eroding cavity features in aluminum and zinc die casting die inserts Precision tool and die operations requiring production sinker EDM with AI-assisted setup Medical device mold manufacturers producing surgical instrument and implant mold tooling Shops upgrading from older Sodick AL-G machines to gain SP Power Supply and AI capabilities

Frequently Asked Questions

01 What is new in the AL40G+ versus the AL40G?

The plus generation adds the SP Power Supply with doubled motor control response, Arc-less 4 circuit for reduced electrode wear and faster speeds, TH COM thermal compensation (50% reduction in thermal displacement), and LN Pro AI machining condition adviser. These improve both productivity and accuracy.

02 What does the LN Pro AI adviser do?

LN Pro AI analyzes the electrode/workpiece material combination, cavity geometry, and desired surface finish to recommend optimal generator settings. This reduces trial-and-error on unfamiliar jobs and helps less experienced operators achieve results closer to expert-level performance.

03 How does Arc-less 4 reduce electrode wear?

Arc-less 4 controls discharge energy more precisely than conventional circuits, eliminating the arcing events that cause localized electrode damage and accelerated wear. Fewer arcs mean more uniform erosion, which extends electrode life and reduces the number of electrodes needed per cavity.

04 What surface finishes are achievable?

The AL40G+ produces finishes from satin texture (Ra 1.6-3.2 um) through fine finishing (Ra 0.2-0.4 um) to mirror quality (Ra 0.1 um and below) on hardened steel with copper electrodes. Graphite electrodes are used for roughing and semi-finishing. The range of achievable finishes depends on electrode material, generator settings, and orbit cycle parameters.