SD-750 CNC EDM Hole Drilling Machine : 27.5" x 17.7" Travel, 15-Position AEC Standard
Founder & EDM Specialist at Iron Machine Tool | 15+ years with Mitsubishi Machinery Systems
CNC Hole Popper EDM for Repeatable, High Accuracy Production Drilling
The SD-750 is Iron Machine Tool's large-travel CNC EDM hole drilling machine, built for shops producing wire EDM start holes, aerospace cooling holes, and precision holes across large mold bases, die sets, and structural components that exceed the SD-530's working envelope. Its 27.5" x 17.7" table travel six inches wider and six inches deeper than the SD-530 accommodates larger workpieces while maintaining the same precision CNC EDM hole drilling performance.
The SD-750 comes standard with a 15-position automatic electrode changer and a 4-position automatic guide changer. The upgrade from 10 to 15 AEC positions means fewer electrode magazine reloads during extended unattended production runs. Combined with the standard 4-position AGC, the SD-750 executes complex multi-hole programs drilling multiple hole diameters across large workpieces — without operator intervention.
Iron Machine Tool distributes the SD-750 across Minnesota, Wisconsin, Iowa, and Illinois. Contact Steve Brown to discuss your workpiece dimensions and production requirements.
How the SD-750 Handles Microhole Drilling at Production Scale
The SD-750 follows the same gantry-style CNC architecture as the SD-530 the electrode assembly moves in XY and Z while the workpiece remains stationary on the table, allowing very heavy workpieces without the positioning limitations of moving-table designs.
What separates the SD-750 from the SD-530 is working area and AEC capacity. The 27.5" x 17.7" table travel accommodates workpieces that won't fit in the SD-530's 21.6" x 11.8" envelope large injection mold bases, aerospace structural sections, long progressive die sets, and any workpiece array where the SD-530's XY range is the limiting factor. The 15-position AEC (vs. 10 on the SD-530) extends unattended run time between electrode reloads, making the SD-750 the right production choice when part size and long-cycle unattended operation are both required.
The 27.6" W-axis electrode travel and 14.2" Z-axis guide travel provide the same depth range as the SD-530, giving the SD-750 depth capacity consistent with production EDM hole drilling across most tooling and aerospace applications.
SD-750 CNC EDM Hole Drilling Machine : Specifications
The SD-750 offers the largest worktable travel in the Iron Machine Tool CNC hole popper EDM lineup, with an XY envelope suited to large mold bases and tooling plates. Its electrode travel, guide travel, and table-to-guide range accommodate deep hole work across a wide variety of workpiece geometries, while the standard 15-position electrode changer handles full production runs without manual restocking between cycles.
| Specifications | Value |
| Travels (X, Y) | 27.5" x 17.7" |
| Electrode Travel (W-Axis) | 27.6" |
| Guide Travel (Z-Axis) | 14.2" |
| Distance from Table to Guide | 3.6" ~ 17.8" |
| Electrode Diameter Range | 0.012" ~ 0.124" (0.236" optional) |
| Automatic Electrode Changer | 15-Position (Standard) |
| Automatic Guide Changer | 4-Position (Standard) |
SD-750 Capabilities : What It Can Machine
The SD-750 machines any electrically conductive material regardless of hardness, across its full 27.5" x 17.7" working envelope:
- Hardened Tool Steel (D2, H13, P20, M2 at 60+ HRC): The SD-750's CNC control and automatic electrode compensation handle hardened steel at production volume across large mold bases, die sets, and tooling components that cannot fit in smaller machines.
- Cemented Carbide: Large carbide inserts, carbide-faced punch tooling, and hardened carbide die components are standard SD-750 work. The gantry configuration holds the heavy workpiece stationary while the electrode assembly traverses the full working area.
- Titanium and Inconel: Aerospace structural components and turbine housings in titanium and Inconel alloys require precise small holes at locations across large-footprint parts. The SD-750's extended XY travel covers the full component without repositioning.
- Stainless Steel, Copper, Brass: Full capability across all standard conductive materials.
Electrode diameter range: 0.012" to 0.124" standard, with 0.236" optional via Power Booster. The 3.6" to 17.8" guide-to-table distance range accommodates workpiece heights from thin plate to tall mold bases.
Want to See If the SD-750 Fits Your Production Volume?
Talk to Steve Brown about your microhole drilling requirements and workpiece sizes. Iron Machine Tool serves manufacturers across Minnesota, Wisconsin, Iowa, and Illinois.
SD-750 Applications : Large-Workpiece CNC EDM Hole Drilling
Injection mold bases, compression mold sets, and large die bases require arrays of ejector pin holes, vent holes, and cooling channel access holes drilled through hardened P20 or H13 steel. The SD-750's 27.5" x 17.7" table travel accommodates mold bases that exceed the SD-530's capacity, while the 15-position AEC and standard AGC execute the complete hole pattern multiple diameters, fully automated in a single unattended cycle.
Aerospace structural frames, housings, and turbine module components in titanium, Inconel, and high-strength alloys often have large part footprints with cooling holes, lightweighting holes, and assembly features distributed across the full part surface. The SD-750's working envelope covers the component without part repositioning, improving hole-position accuracy and reducing setup time.
Large progressive dies, blanking dies, and heavy mold inserts require multiple wire EDM start holes distributed across the full part face. The SD-750's extended XY range and 15-position AEC allow the complete start hole pattern to be drilled in one program, unattended.
Blanking dies, trimming dies, and forming tool sets in large formats require ejector pin and vent holes that exceed the SD-530's XY capacity. The SD-750 handles these in production-efficient, unattended CNC cycles.
With workpiece weight capacity well above the SD-530 class, the SD-750 accommodates heavy cast or machined workpieces that smaller EDM hole drilling machines cannot support on their tables.
Who Is the SD-750 For?
The SD-750 is the right choice if:
- Your workpieces exceed the SD-530's 21.6" x 11.8" table travel large mold bases, aerospace structural components, long progressive die sets, or any part array that will not fit in a smaller machine.
- You need extended unattended EDM hole drilling runs. The 15-position AEC allows longer cycle times between electrode reloads vs. the SD-530's 10-position magazine reducing machine stoppages on overnight or shift-change production.
- You drill multiple hole diameters in a single setup and need the guide to change automatically. The standard 4-position AGC handles this without operator intervention.
- Your production volume justifies a larger machine investment for throughput gains on large-part programs.
The SD-750 may not be the right fit if:
- Your workpieces fit within the SD-530's 21.6" x 11.8" envelope and you do not need the larger travel the SD-530 is the cost-efficient choice.
- Your primary need is manual operation for variable, low-volume work consider the H32Z.
- Your application demands submerged EDM hole drilling for micro-hole precision — consider the AD6L.
Contact Steve Brown at Iron Machine Tool to assess your workpiece dimensions, materials, and production volumes and confirm whether the SD-750 is the right machine for your shop.
SD-750 vs SD-530 Comparison
| Factor | SD-530 CNC | SD-750 CNC |
| Table travel (XY) | 21.6" x 11.8" (548 x 300 mm) | 27.5" x 17.7" (700 x 450 mm) |
| Electrode (W-axis) travel | 23.6" | 27.6" |
| AEC positions (standard) | 10-position | 15-position |
| AGC positions (standard) | 4-position | 4-position |
| Primary use case | Mid-size production — fits most tooling and aerospace work | Large-workpiece production — large mold bases, big aerospace parts, extended runs |
| Unattended run length | Standard — 10 electrodes before reload | Extended — 15 electrodes before reload |
| Investment | Lower starting cost | Higher — offset by large-part capability and extended unattended run time |
Frequently Asked Questions
A: The SD-750 is a CNC EDM hole drilling machine with a large 27.5" x 17.7" table travel, 15-position automatic electrode changer standard, and 4-position automatic guide changer standard. It drills holes from 0.012" to 0.124" in diameter through hardened metals, carbide, titanium, Inconel, and other conductive materials. The SD-750 is designed for large-workpiece production environments requiring extended unattended multi-hole programs.
A: The SD-750 has a larger table travel (27.5" x 17.7" vs. 21.6" x 11.8" on the SD-530) and a 15-position AEC vs. the SD-530's 10-position. Both machines include a standard 4-position AGC. The SD-750 is the right choice when your workpieces exceed the SD-530's working envelope or when you need extended unattended run times that benefit from more AEC magazine positions. The SD-530 is the right choice for mid-size production work within its XY travel range.
A: The SD-750 table travel is 27.5" x 17.7" (700 x 450 mm). The electrode (W-axis) travel is 27.6" and the guide (Z-axis) travel is 14.2". The distance from table to guide ranges from 3.6" to 17.8", accommodating a wide range of workpiece heights.
A: Yes. The SD-750's 15-position AEC and standard 4-position AGC allow extended multi-hole programs to run without operator presence. The machine automatically loads replacement electrodes from the AEC magazine as electrodes wear, and changes guide sizes automatically via the AGC when the program calls for different hole diameters. For lights-out EDM hole drilling on large workpieces, the SD-750 is designed for exactly this application.
A: The SD-750 table travel of 27.5" x 17.7" accommodates larger workpieces than the SD-530 (21.6" x 11.8"). Applications include large injection mold bases, progressive die sets, aerospace structural sections, and other workpieces that exceed the SD-530's working envelope. For workpiece weight capacity details, contact Steve Brown at Iron Machine Tool.
A: Iron Machine Tool does not publish machine prices publicly. Contact Steve Brown at 630-347-9559 or Steve.Brown@IronMachineTool.com to request current SD-750 pricing, configuration options, and availability.
Ready to Scale Your Microhole Drilling Operation?
Talk to Steve Brown about whether the SD-750 CNC hole popper EDM machine is the right fit for your large-format microhole drilling and production volume needs. Iron Machine Tool serves manufacturers across Minnesota, Wisconsin, Iowa, and Illinois.