Sinker EDM Machine

Plassteze's Sinker EDM Machine is engineered for toolrooms that cannot afford rework — delivering mirror-grade 0.01 Ra surface finishes directly off the machine, with a rated machining speed of up to 750 mm³/min that cuts cycle time without compromising dimensional accuracy. Built on an industrial Linux OS with power-off memory protection, it keeps unattended overnight and multi-shift machining runs safe from data loss and copyright-licensing interruptions. For die and mould manufacturers running high-cavity, high-value tooling, this is a machine designed to hold tolerance run after run, not just on the first part off the table.

Key Technical Features

  • High Gloss Mirror Circuit (0.01 Ra Surface Finish): A dedicated finishing circuit that achieves a mirror-grade surface (Ra, or roughness average, measured in micrometres) directly during spark erosion, reducing or eliminating manual polishing on cosmetic and sealing surfaces.
  • Max Machining Speed of 750 mm³/min: Material removal rate determines how fast a cavity or core can be roughed out before finishing passes begin — a higher mm³/min rating shortens total cycle time on deep or complex cavities.
  • 5-Axis Linkage with Multi-Machine Networking: Enables simultaneous multi-directional electrode movement for complex 3D cavity geometries, while networking support allows one operator to monitor and queue jobs across several machines.
  • Power-Off Memory Protection: Retains the exact machining state through a power interruption and resumes from that point rather than restarting the program, protecting long unattended finishing cycles from costly rework.
  • Industrial Linux OS with Remote Assistance: A stable, licensing-restriction free operating environment paired with one-touch remote support calling.
  • ERP Management and ATC Robot Support: Native integration with automatic tool changer robotics and production ERP systems for lights-out or semi-automated manufacturing cells.
  • C-Axis EDM Automation with Double-Head Configuration: Supports more complex electrode orientations and higher throughput on multi-cavity dies.

Industrial Applications

  • Die & Mould Manufacturing: High-cavity injection moulds and progressive stamping dies requiring deep, geometrically complex cavities with mirror-finish cores.
  • High-Pressure Die Casting (HPDC) Tooling: Dies subject to thermal cycling and erosion, where surface finish quality directly affects casting release and part quality.
  • Automotive Component Tooling: Stamping dies and injection mould tooling for interior trim, connectors, and precision housings.
  • Aerospace Component Machining: Precision cavities and fixtures on hardened, difficult-to-machine tool steels.
  • Electronics & Connector Tooling: Fine-detail mould cavities for connectors, switchgear, and small precision components.
  • Medical Device Tooling: Cavities requiring tight tolerance and a clean, low-roughness surface finish suitable for regulated production environments.

Technical Specifications

Parameter Specification
Table Size (X x Y)650 x 450 mm
X/Y/Z Axis Travel400 / 300 / 300 mm
Max Workpiece Weight800 kg
Max Electrode Weight50 kg
Max Machining Speed750 mm³/min
Best Achievable Surface FinishRa 0.01 µm (mirror finish)
ControllerIndustrial Linux OS, 19" capacitive touchscreen
Memory Capacity64 GB
Axis Configuration5-axis linkage, C-axis EDM automation
Automation SupportATC robot integration, multi-machine networking, ERP connectivity
Dielectric Fluid Capacity800 litres
Power Supply3-phase, 415V, 50Hz

Specifications vary by model configuration. Confirm exact parameters for your production requirement with Plassteze's engineering team.

Request a Technical Consultation

Get parameters matched to your actual cavity depth, electrode material, and surface finish requirement — not a generic configuration. Our engineering team will size the right Sinker EDM configuration against your current die and mould production requirements.

Request a Quote   📞 (011) 43738825   |   ✉️ plassteze@plassteze.com

Sinker EDM Machine Supplier in India — 5-Axis Die Sinking EDM | Plassteze

Plassteze supplies sinker EDM machines (also called die sinking EDM or ram EDM) for precision die and mould cavity machining across India. Our sinker EDM machines offer 5-axis capability, ERP integration, auto tool path memory, and mirror-finish surface quality. They are used for machining complex cavities in hardened steel, carbide and other difficult-to-cut materials — essential for automotive, aerospace, medical and packaging moulds.

Frequently Asked Questions — Sinker EDM Machine

What is a sinker EDM machine used for?

A sinker EDM (die sinking EDM) machine is used to machine complex shapes and cavities into hardened metal by using electrical discharge erosion. It is ideal for creating die and mould cavities, ribs, slots and sharp internal corners that cannot be produced with conventional cutting tools.

What materials can a sinker EDM machine process?

Sinker EDM machines can process any electrically conductive material regardless of hardness — including hardened tool steel (H13, P20, D2), carbide, titanium, Inconel and copper alloys.

What surface finish can Plassteze's sinker EDM machines achieve?

Plassteze's sinker EDM machines can achieve mirror-quality surface finishes with Ra values as low as 0.1 μm, making them suitable for optical mould and mirror-polish cavity applications.

What is 5-axis sinker EDM?

5-axis sinker EDM allows simultaneous movement in X, Y, Z, and two rotational axes, enabling complex orbital, planetary and helical EDM movements for high-precision mould cavities.

Where can I buy a sinker EDM machine in India?

Plassteze supplies sinker EDM machines from offices in New Delhi, Pune, Chennai and Gujarat. Contact: plassteze@plassteze.com or +91-98102-99598.

What is the difference between sinker EDM and wirecut EDM?

Sinker EDM uses a shaped electrode (graphite or copper) to erode a cavity into the workpiece. Wirecut EDM uses a thin wire to cut through a workpiece along a programmed path. Sinker EDM is used for 3D cavities; wirecut EDM is used for profiles, punches and dies.

What's the maintenance routine, and how does dielectric fluid condition affect performance?

Routine maintenance centres on dielectric fluid filtration and periodic replacement, electrode wear inspection, and servo axis calibration checks. Degraded or contaminated dielectric fluid is one of the most common causes of inconsistent spark gap and surface finish quality, so filtration system upkeep should be part of your standard preventive maintenance schedule.

How long does a sinker EDM machine remain productive in continuous toolroom use?

With proper dielectric fluid management, regular servo and guideway maintenance, and controlled ambient operating conditions, these machines are typically built for a service life well beyond a decade in continuous industrial use, with power-off memory protection preventing data loss during grid interruptions.