EMO Global Start Milltap 700: What the Platform Actually Changes
The Milltap 700 is a drill-tap-mill platform shown at EMO with a 10,000 rpm standard spindle, a 1.5 s chip-to-chip tool change, and 700 × 420 mm X/Y travel. This page explains the mechanics behind those numbers, where they help, and where they do not.
Why the Milltap 700 Exists
The EMO Global Start Milltap 700 is not a scaled-down machining center. It is a drill-tap-mill platform built around one idea: most parts in a production cell need holes, threads, and light milling far more often than they need heavy material removal at a slow spindle speed. Designers set the machine up so the fast operations stay fast and the setup stays short.
That choice shows up in the layout. The X-axis stroke is 700 mm and the Y-axis stroke is 420 mm, so an operator can reach the table without leaning across a long casting. The working area is wide rather than deep. For fixture plates, brackets, housings, and cover plates, that shape matches how the parts actually sit in a vise.
The spindle is the other half of the argument. A 10,000 rpm standard spindle covers aluminium, brass, and small-diameter tooling in steel. A 24,000 rpm option is available for shops that run a lot of small cutters in aluminium. The machine does not try to be a 20,000 rpm heavy hogging platform; it tries to finish a chamber of holes and threads before the tool change becomes the bottleneck.
This is a repeatability story, not a peak-power story. Linear guides and a stiff structure keep positioning stable across a full shift. If your part is 20 kg of hardened steel with deep pockets, the platform will not flatter itself. If your part is a plate with 300 tapped holes, the arithmetic changes fast.
Spindle Speed, Torque, and What the 1.5 s Tool Change Buys You
Tool change time is not a comfort feature. It is a cost line. On a part with 40 tools in the program, the difference between a 1.5 s chip-to-chip change and a 5 s change is roughly 140 s per part. At 500 parts, that is 19 hours of spindle time recovered without touching a single feed rate. That is the real case for the Milltap 700 in a cell.
The 15-tool magazine keeps the common tools resident: spot drill, three or four taps, a couple of end mills, a chamfer tool, and a drill array. A 25-tool magazine is available when the part mix needs more coverage. Fewer manual reloads means fewer opportunities to load the wrong tool, which is the failure mode that costs the most.
Spindle power is listed at a maximum of 25 kW, and torque balance matters more than the peak number. Tapping small threads in stainless needs low-end torque and good speed control, not 24,000 rpm. Drilling Ø3 mm holes in aluminium needs rpm, not torque. The machine's two spindle options let you pick which side of that trade you live on.
Thermal drift is the limit nobody puts on a spec sheet. A spindle running at high rpm for an hour grows in Z. On a ±0.05 mm job this is noise. On a ±0.005 mm job we warm up the spindle, measure, and cut. The machine does not remove that discipline.
Siemens 840D Solutionline and the Sinamics 120 Pair
The control on a machine like this is Siemens 840D Solutionline with a compact Sinamics 120 converter. In plain terms: the drive and the control are designed as one system, so acceleration, braking, and position feedback stay coordinated during high-speed positioning moves. That matters when the tool path is thousands of short moves between holes.
Look-ahead is the practical benefit. The control reads the next blocks, predicts where the axes will be, and limits feed when the geometry demands it. Without that, an operator either slows the whole program or accepts corner rounding. With it, small arcs and chamfers come out clean at feed rates that would otherwise overshoot.
Energy consumption is reported as roughly 30% lower than a comparable older platform. Part of that comes from the drive pair and part from not running a large spindle when the job only needs a small one. For a shop running three shifts, that shows up in the electricity line, not in the chip line.
One caution. A control with this much capability will also let you program a bad process very precisely. Tool deflection, chip evacuation, and workholding remain your problem. The control does not fix a part that is not rigid.
Which Parts Belong on This Platform
A drill-tap-mill platform earns its keep on parts where hole count and thread count dominate the cycle. Think of a manifold with 30 ports, an electronics chassis with 60 mounting holes, or a fixture plate with a grid of M6 threads. On those parts the spindle spends more time positioning than cutting, and a fast tool changer pays back daily.
The 700 × 420 mm travel accepts a useful range of plate work. A 600 × 400 mm plate with a few clamps still leaves room to reach the far corner. It also suits small prismatic parts loaded in multiples: ten parts in one vise, one program, one tool change cycle. Batch loading is often where the platform beats a larger machine on cost per part.
It is a weaker match for deep-cavity work in hard steel, for parts needing continuous 5-axis contouring, and for anything over a few hundred kilograms where the table load and the chip volume argue for a bigger frame. Those jobs want a different machine, and pretending otherwise wastes spindle hours.
Material choice barely changes the decision. Aluminium 6061, 6082, and 7075, plus brass and plastics, run comfortably at 10,000 rpm. Stainless 303 and 304, mild steel, and tool steel run fine with lower rpm and the right cutter. The platform is limited by part geometry and rigidity, not by the material list.
What the Machine Does Not Solve
A machine tool is one link in a chain. A 1.5 s tool change means nothing if the fixture takes 40 minutes to set up. On short-run work, setup dominates, and the fix is fixture design, not spindle speed. We build fixture plates and soft jaws so the second setup takes minutes instead of an hour.
Chip evacuation is the second limit. A drill-tap-mill platform cutting aluminium at high rpm produces fine chips that pack into pockets and around the vise. Poor evacuation turns into recutting, which turns into broken taps. Air blast, through-spindle coolant, and program pauses all matter more than the spec sheet suggests.
Accuracy claims need context. On our own 127 CNC machines across 3 plants in Dongguan and Singapore, we hold ±0.005 mm when the geometry, material, and fixturing allow it, and we say so when they do not. A drill-tap platform is not automatically a precision grinder. It is precise when the setup is precise.
Finally, the qualification rate we track is 99.99% across inspected production, with 100% inspection before shipment. That number comes from process control and inspection, not from any single machine. Buying a good machine and skipping the inspection step is how shops lose the benefit.
Drill-Tap-Mill Platform vs 3-Axis VMC vs 5-Axis Center
Use this to place a job before you quote it.
| Criterion | Drill-tap-mill (Milltap 700 class) | 3-axis VMC | 5-axis machining center |
|---|---|---|---|
| Best part type | Plates, housings, high hole count | General prismatic milling | Complex contoured, multi-face |
| Typical tool change | 1.5 s chip-to-chip | 3–8 s chip-to-chip | 4–10 s chip-to-chip |
| Spindle speed | 10,000 rpm standard | 8,000–12,000 rpm | 12,000–24,000 rpm |
| Travel example | 700 × 420 mm X/Y | 600 × 600 × 600 mm | 500 × 500 × 450 mm |
| Setup count | 1–2 | 2–4 | 1 |
| Cycle win when | Holes and threads dominate | Pockets and faces dominate | Undercuts and angles dominate |
| Cycle loss when | Deep cavities in hard steel | High hole count with many tools | Simple flat plate work |
| Shop floor fit | Production cell, batch runs | Job shop, mixed work | Aerospace, medical, mold work |
The Short Version
If your part is a plate or housing where holes, threads, and light milling dominate the cycle, a drill-tap-mill platform like the Milltap 700 class cuts spindle time and setup count. If your part needs deep cavities in hard steel or continuous 5-axis contouring, choose a 5-axis machining center instead and stop paying for tool changes you do not need.
Questions Engineers Ask
Is a 1.5 s chip-to-chip tool change real on production parts?
The number is measured under defined conditions: adjacent tools, short axis travel, and a warm machine. On a real program with long Z moves and heavy tools, expect somewhat longer.
Even with that allowance, the direction holds. On a 40-tool program, a fast changer recovers minutes per part. That is where the payback lives, not in the brochure figure.
Can a drill-tap-mill platform hold ±0.005 mm?
Yes, within limits. The tolerance depends on geometry, material, tool rigidity, and thermal stability, not only on the machine. Thin walls and long tools will move more than the machine does.
We hold ±0.005 mm on suitable parts and confirm it with in-process monitoring and final inspection. If a feature cannot hold that window, we say so before production.
What spindle option should a shop pick, 10,000 rpm or 24,000 rpm?
Pick 10,000 rpm if your mix includes steel, stainless, and tapping with larger threads. Low-end torque and speed control matter more than top rpm on those jobs.
Pick 24,000 rpm if most work is aluminium with small cutters, where surface speed and chip load drive the cycle. The wrong choice shows up as either broken small tools or slow tapping.
How does the tool magazine size affect scheduling?
A 15-tool magazine covers most plate and housing programs. When the tool count exceeds the magazine, an operator reloads mid-run, which adds an interruption and a chance of loading the wrong tool.
A 25-tool option reduces those interruptions on mixed part families. The decision is about how many distinct tools your average program needs, not about maximum tool count.
Does the platform replace a 5-axis machine?
No. A drill-tap-mill platform removes material along three axes and positions fast. It cannot reach undercuts or contour a compound surface in one setup the way a simultaneous 5-axis center can.
Use both in the same shop. Route high-hole-count plate work to the drill-tap platform and complex contoured parts to the 5-axis centers.
What information do you need to quote this kind of work?
Send the 3D model or 2D drawing, the material and temper, the tolerances that matter, the surface finish callouts, and the target quantity. If a feature is cosmetic or non-critical, say so; it changes the process.
We return a quotation and a free DFM analysis within 12 hours. Production can start within 24 hours after drawing release, and parts typically ship in 3–5 days.
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