S & T Engineers Private Limited

EX 40 CNC Wire EDM Machine

High-Precision CNC Wire EDM for Fine Electrical Discharge Machining

The EX 40 CNC Wire EDM Machine is a high-accuracy electrical discharge machining system engineered for precision machining of intricate profiles, fine contours, and complex geometries on hardened metals and difficult-to-cut materials. Designed for professional tool rooms, mold & die shops, aerospace, automotive, and precision manufacturing units, this CNC wire EDM delivers superior accuracy, stable performance, and consistent surface finish.

Built around a rigid machine base and advanced CNC control, the EX 40 ensures efficient spark erosion cutting with minimal thermal distortion. Its generous travel and work area accommodate a wide range of workpiece sizes, making it suitable for both prototype and production EDM tasks.

Technical Specifications

• Controller: CNC320
• Controller Dimensions: 700 × 800 × 1800 mm
• Travel (X × Y): 300 × 200 mm
• Work Table Size: 500 × 300 mm
• Z-Axis Traverse: 200 mm
• Maximum Electrode Weight: 50 kg
• Maximum Job Weight: 300 kg
• Maximum Job Height from Table: 580 mm
• Work Tank Dimensions: 850 × 550 × 320 mm
• Machine Weight: 1200 kg
• Overall Machine Dimensions: 1400 × 1200 × 2100 mm
• Maximum Current: 60 A
• Input Power: 6 kW
• Controller Weight: 220 kg

EDM Performance & Advantages

The EX 40 CNC Wire EDM Machine provides precise and stable cutting with optimized spark control. Its robust CNC320 control system enables easy programming, accurate path control, and repeatable operations. Designed for both batch and one-off jobs, it minimizes machining errors and reduces rework.

Key benefits include:
• High machining accuracy and repeatability
• Smooth cut surface with minimal recast layer
• Stable arc control and consistent spark erosion
• Large work area for versatile applications
• Reliable performance in hardened steels and exotic alloys

Materials & Compatibility

Ideal for machining hardened steel, alloy tool steels, titanium, Inconel, carbide, stainless steel, and other conductive materials requiring precision EDM.

Industry Applications

• Mold & die making
• Automotive precision parts
• Aerospace components
• Electrical contacts & inserts
• Precision engineering tools
• Prototype and batch EDM work

The EX 40 CNC Wire EDM Machine is a dependable and high-performance EDM solution for manufacturers seeking precision, productivity, and reliable EDM cutting performance in demanding industrial environments.

VG 400 Wire EDM Submerge Type Machine

High-Precision 5-Axis CNC Wire EDM for Taper & Profile Cutting

The VG 400 Wire EDM Submerge Type Machine is a high-accuracy CNC wire electrical discharge machining solution designed for precision cutting of complex profiles, tapers, and intricate geometries in conductive materials. Built with a rigid structure and full submerge cutting system, this machine delivers superior surface finish, excellent dimensional accuracy, and stable machining performance in demanding industrial environments.

Equipped with 5-axis AC servo motor control (X, Y, Z, U, V), the VG 400 enables precise straight and taper cutting in a single setup. The submerged machining tank ensures consistent spark conditions, reduced wire breakage, and improved cutting stability, making it ideal for mold & die, tool room, and precision component manufacturing.

Technical Specifications

• Machine Size: 2100 × 2300 × 2200 mm
• X / Y Axis Travel: 400 × 300 mm
• U / V Axis Travel: 80 × 80 mm
• Z Axis Travel: 220 mm
• Controlled Axes: 5-Axis AC Servo Motor
• Maximum Taper Angle: ±22° / 100 mm
• Machine Weight: 2700 kg

Performance & Machining Advantages

The VG 400 is engineered for stable and accurate EDM operations with smooth axis movement and reliable wire control.

Key benefits include:
• Full submerge type cutting for improved surface finish
• High taper cutting accuracy with wide diamond guide & nozzle
• Stable spark control and reduced wire consumption
• AC servo-driven axes for smooth, precise motion
• Rigid machine construction for vibration-free machining
• Suitable for continuous industrial operation

Materials Suitable for Machining

Hardened tool steel, alloy steel, stainless steel, carbide, copper, titanium, and other electrically conductive materials.

Industry Applications

• Mold & die manufacturing
• Tool rooms & precision job shops
• Automotive and aerospace components
• Punches, dies & inserts
• Precision engineering parts
• Electrical & electronic tooling

The VG 400 Wire EDM Submerge Type Machine is a reliable and production-ready solution for manufacturers seeking high-precision EDM cutting, accurate taper machining, and consistent performance, making it an excellent investment for modern precision machining facilities.

Automatic ST430i Small Hole EDM Drill Machine

High-Speed EDM Hole Drilling Machine for Precision Small & Deep Holes

The ST430i Small Hole EDM Drill Machine is an automatic, high-precision EDM drilling solution designed for fast and accurate drilling of small and deep holes in hard and conductive materials. Engineered for tool rooms, mold shops, and precision manufacturing units, this machine delivers excellent drilling speed, stability, and repeatability for demanding EDM applications.

Powered by a reliable 3.0 KVA system and built with a rigid machine structure, the ST430i is ideal for drilling starter holes for wire EDM, cooling holes, and micro-holes in hardened steel, carbide, and alloy materials. The advanced servo-controlled Z-axis ensures smooth, fast vertical movement and consistent drilling depth.

Technical Specifications

• Machine Type: Automatic
• Brand: S&T
• Power Consumption: 3.0 KVA
• Machine Weight: 700 kg
• Electrode Diameter: 0.3 – 3.0 mm
• Max Drilling Speed: Up to 30 mm/min
• Z1 Axis Travel: 280 mm
• Z2 Axis Travel (Servo): 380 mm
• Rotary Head Speed: 20 – 120 RPM
• Work Table Size: 320 × 440 mm
• Table Travel: 300 × 400 mm
• Max Workpiece Weight: 300 kg
• Dielectric Fluid Tank Capacity: 30 L

Machine Design & Performance Features

The ST430i supports brass tube electrodes up to 500 mm length, enabling deep hole drilling with excellent straightness. The fast up-down Z-axis movement significantly reduces cycle time while maintaining drilling accuracy.

Key performance highlights:
• Very fast Z-axis response for high drilling efficiency
• Brass tube consumption reduced to only 1/3 of conventional machines
• Maximum distance between guide and table: 300 mm
• Stable drilling even at high depth-to-diameter ratios

Productivity & Operational Benefits

• Faster hole drilling compared to conventional EDM drills
• Reduced electrode consumption and operating cost
• Smooth servo control for consistent hole quality
• Suitable for continuous industrial operation

Materials & Applications

Suitable for hardened steel, stainless steel, carbide, tool steel, and conductive alloys.

Widely used in:
• Wire EDM starter hole drilling
• Mold & die manufacturing
• Injection mold cooling holes
• Aerospace & automotive components
• Precision tool rooms & job shops

Key Advantages

• Automatic EDM drilling with servo control
• High drilling speed up to 30 mm/min
• Supports micro-electrodes (0.3–3.0 mm)
• Low brass tube consumption
• Compact, rigid, and production-ready design

The ST430i Small Hole EDM Drill Machine is a reliable and cost-effective solution for manufacturers seeking speed, precision, and efficiency in small hole EDM drilling—making it an essential machine for modern precision machining environments.

EX 400 CNC Wire Cut EDM Machine – Submerge Type

High-Precision Automatic CNC Wire EDM for Complex & Accurate Cutting

The EX 400 CNC Wire Cut EDM Machine (Submerge Type) is a high-performance automatic CNC wire EDM system designed for precision cutting of complex profiles, dies, molds, and high-accuracy components. Built with a rigid machine structure and advanced servo control technology, this submerge-type wire cut EDM ensures excellent cutting accuracy, surface finish, and long-term dimensional stability.

Engineered for tool rooms, mold & die manufacturers, and precision engineering industries, the EX 400 delivers stable performance even during long cutting cycles. The submerged cutting environment improves flushing efficiency, reduces wire breakage, and enhances overall machining consistency.

Technical Specifications

• Model Name/Number: EX 400
• Machine Condition: New
• Automation Grade: Automatic
• Machine Weight: 2600 kg
• Wire Diameter: 0.15 – 0.30 mm
• Max Workpiece Size: 650 × 550 × 215 mm
• Maximum Taper Angle: ±22° / 80 mm

Machine Structure & Design Excellence

The EX 400 is designed using Finite Element Analysis (FEA) to achieve optimal rib placement and thermal balance. This ensures high rigidity, reduced vibration, and consistent cutting accuracy during continuous operation.

Key design features include:
• Optimized rigid machine structure through FEA
• Rigid U & V axis construction for precise taper cutting
• High-response AC servo motors for smooth and accurate axis movement
• Water-cooled lower arm to prevent thermal expansion
• Improved job accuracy and dimensional stability
• LED work lamp for clear machining visibility

Performance & Productivity Benefits

• High cutting accuracy with excellent repeatability
• Stable submerged cutting for better flushing and surface finish
• Reduced wire breakage and downtime
• Suitable for complex contours and taper cutting

Materials & Applications

Suitable for machining hardened steel, tool steel, carbide, stainless steel, and conductive alloys.

Widely used in:
• Mold & die manufacturing
• Precision tool rooms
• Automotive & aerospace components
• Engineering job shops
• Punch, die & fixture manufacturing

Key Advantages

• Automatic CNC submerge-type wire EDM
• ±22° taper cutting capability
• Rigid structure with thermal stability
• High-precision AC servo control
• Ideal for high-accuracy and complex EDM jobs

The EX 400 CNC Wire Cut EDM Machine is a reliable, production-ready solution for manufacturers seeking precision, stability, and efficiency in wire EDM operations—making it a strong investment for modern precision machining environments.