Pentagon Small Hole EDM Drilling Machine — PDD703.30
PDD703.30 Small Hole EDM Drilling Machine is engineered for high-precision micro-hole drilling in hardened steels, carbides, super alloys, and conductive materials where conventional drilling is impossible. Designed for tool rooms, die shops, aerospace, medical, energy, and machining centers, this machine delivers exceptional accuracy, clean hole finish, and high-speed electrode feed
Specifications
For: PDD703.30- Machine Model
- DD703.30
- Input Power
- 3 kw
- Spindle Servo Stroke
- 300 mm
- Clamping Electrode Diameter
- 0.3-3.0 mm
- Maximum Distance Between The Guide and the Table
- 300 mm
- Max Consumption Power
- 6KVA
- Max Working Current
- 30A
- Working Desk Size
- 260x380 mm
- Water Tank Capacity
- 25 Liter
- Travel X-Y
- 300x400 mm
- Spindle Head Speed
- 20-120 rpm
- Spindle Head Stroke
- 300 mm
- Weight Approx.
- 800 Kgs
- Machine Dimensions
- 1060x750x1700 mm
Configurations
Click a row to switch| Variant | Machine Dimensions | Max Consumption Power | Spindle Head Stroke | Working Desk Size | Price |
|---|---|---|---|---|---|
| PDD703.30 | 1060x750x1700 mm | 6KVA | 300 mm | 260x380 mm | ₹3,75,000 |
| PDD703.50 | 1950x1500x1600 mm | 6 KVA | 500 mm | 700x1000 mm | ₹4,65,000 |
Description
A Small Hole EDM Drill Machine—also known as a hole popper or EDM drilling machine—is a specialized type of Electrical Discharge Machining used to drill very small, precise holes in hard, conductive materials. It is especially useful where traditional drilling methods would fail due to tool breakage or material hardness
The DD703.30 CNC Electric Spark Drilling Machine is a precision-engineered small hole EDM machine used for drilling fine and deep holes that are difficult or impossible to achieve using conventional drilling methods. It operates on the electrical discharge machining principle, allowing accurate hole drilling in hardened steel, carbide, copper, and other conductive materials.
This machine is ideal for applications such as start hole drilling for wire cut EDM, cooling holes, injector holes, and precision components. With a rigid structure, stable electrical system, and CNC-controlled axis movement, the DD703.30 ensures consistent accuracy, smooth operation, and long service life.
Features
- Micro Hole Drilling: Capable of drilling very small holes (typically 0.1 mm to 3 mm diameter).
- Deep Hole Capability: Can drill holes with very high depth-to-diameter ratios (e.g., 100:1).
- Hard Material Machining: Easily drills hardened steels, carbide, titanium, Inconel, etc.
- No Mechanical Contact: Non-contact process = no tool pressure or deformation.
- Rotating Electrode: Uses a rotating, tubular electrode (usually brass or copper).
- Dielectric Flushing System: High-pressure dielectric fluid is pumped through the electrode to cool and flush debris.
- Precision and Repeatability: Accurate positioning and consistent hole size, often with CNC control.
- CNC or Manual Operation: Available in both manual and CNC-controlled versions.
- Angle Drilling: Can drill angled holes with tilting or rotary axis options.
- Automatic Electrode Feeding: Many machines offer auto electrode feeding for continuous drilling.
- Compact Design: Often small and space-efficient—ideal for tool rooms or precision workshops.
- Low Tool Wear: Electrodes last longer compared to conventional drills in hard materials.
- Hole Diameter: 0.3 mm – 3.0 mm
- Materials: Hardened steel, tungsten carbide, titanium, Inconel
- Electrode Material: Brass, copper, or copper-tungsten tubes
- Depth-to-Diameter Ratio: Up to 100:1 or more
- Axes: Usually 2-axis or 3-axis, some with rotary table for angular holes
Standard Accessories
- 1. Machine Lamp
- 2. Working Fluid System
- 3. Workbench Water Retaining Cover
- 4. DRO(Digital readout) fitted with linear scale
- 5. High Pressure Water Pump
- 6. Operation Manual
Applications
- Start holes for wire EDM operations
- Cooling holes in turbine blades (aerospace)
- Oil holes in automotive parts (e.g., fuel injectors)
- Micro hole drilling in medical devices and electronics
- Hard-to-machine materials like carbide and Inconel
Advantages
- Can drill extremely small, deep holes in tough materials.
- Works on any electrically conductive material.
- No tool wear like conventional drilling.
- Perfect for starter holes that would be too difficult to begin with a wire EDM
Working
- Similar to wire EDM, but instead of a wire, a rotating tubular electrode is used.
- A high-frequency electric spark erodes the material to create a hole.
- Deionized water or dielectric fluid is pumped through the electrode to cool and flush debris.
- No physical contact = no mechanical stress on the workpiece
More questions buyers ask
What is a Small Hole EDM Drilling Machine?
It is a specialized machine that uses electrical discharge machining (EDM) to drill tiny, precise holes in hard, conductive materials like hardened steel, carbide, and titanium.
How does EDM drilling differ from conventional drilling?
EDM drilling is a non-contact process using electric sparks to erode material, meaning there is no mechanical stress, tool pressure, or drill bit breakage, even in extremely hard materials.
What materials can be drilled with this machine?
It can drill any electrically conductive material, including hardened steel, tungsten carbide, titanium, Inconel, and copper.
What is the typical hole diameter range?
These machines typically handle hole diameters from 0.3 mm to 3.0 mm, depending on the electrode size used.
Can it drill deep holes?
Yes, EDM drilling is excellent for high depth-to-diameter ratios, often achieving ratios of 100:1 or more.
What is the primary application for these machines?
They are widely used for start-hole drilling for wire EDM, cooling holes in turbine blades, oil holes in fuel injectors, and precision medical device components.
Does the machine require special fluid?
Yes, it uses a dielectric fluid (often deionized water) to cool the electrode and flush away eroded material particles.
Is the operation CNC controlled?
Yes, these Pentagon models feature CNC-controlled axis movement for high precision, repeatability, and automated operation.
What is the advantage of a rotating electrode?
A rotating tubular electrode ensures uniform spark distribution, better flushing of debris, and straighter, more accurate holes.
Does the electrode wear out?
While there is some electrode wear, it is significantly lower than conventional drill bits, especially when machining hardened materials.
Who should choose the PDD703.30 model?
The PDD703.30 is best for tool rooms and workshops requiring a compact, high-precision machine for smaller parts and standard start-hole drilling.
Who should choose the PDD703.50 model?
The PDD703.50 is ideal for industrial manufacturers needing a larger work area (500x630mm) for heavy-duty components and high-volume production.
How do the PDD703.30 and PDD703.50 compare in size?
The PDD703.30 is a compact unit with a 300x400mm travel, while the PDD703.50 is a heavy-duty machine with a larger 500x630mm travel and increased weight capacity.
Which model is better for aerospace applications?
The PDD703.50 is generally preferred for aerospace due to its larger work envelope and capacity to handle larger, complex turbine components.
Are both models suitable for start-hole drilling?
Yes, both models are highly effective for wire EDM start-hole drilling, with the choice depending primarily on the size of the workpiece.
More like this
Full description
PDD703.30 Small Hole EDM Drilling Machine is engineered for high-precision micro-hole drilling in hardened steels, carbides, super alloys, and conductive materials where conventional drilling is impossible. Designed for tool rooms, die shops, aerospace, medical, energy, and machining centers, this machine delivers exceptional accuracy, clean hole finish, and high-speed electrode feed