If you’re considering purchasing a used Mazak Integrex i-200 (or i-200S / i-200ST / i-200H etc.), that’s a very capable multitasking turn-mill/turning centre. But because it’s complex (spindles, turrets, milling head, B-axis, etc.), there are many risk points and many things experts recommend you check before buying. Below is a detailed “due diligence” guide — what to check physically, what to ask the seller, what tests to run, what to budget for — so you know what you’re getting, what hidden costs may be, and how to judge value.

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Key Specs / What the Integrex i-200 Family Offers (so you know what to expect)

First, understand what the typical or newer specs are so you can compare what a used machine should still be able to deliver. Some variants (i-200H, “SmoothAi” control, “S” or “ST” suffixes, second spindles, etc.) add or change capabilities.

Here are some common specs for i-200 / i-200H S / ST:

Parameter	Typical Spec
Main Spindle Chuck Size	~ 8″ (≈ 200-mm)
Max Swing / Machining Diameter	~ 600 mm (≈ 23.6 in)
Machining Length / Z Travel	Up to ~ 850 mm in some versions (the “U” models)
Milling Spindle (B-axis)	Speeds around 12,000 rpm in many versions; B-axis tilt range ≈ −30° to +240°
Travelling Axes (X, Y, Z, W)	X ~ 535 mm, Y ~ 210 mm, Z / W ~ 900 mm (in some H-series U-bed models)
Magazine / Tool Stations	Varies; e.g. 38 station magazines in many used H-series “S” models.

Knowing these gives you benchmarks: what “as new” might have been, so you can spot if the machine you’re inspecting has fallen significantly behind, or if a seller is misrepresenting.

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What Experts Recommend You Inspect / Check (Physical, Mechanical, and Operational)

Because the Integrex is multitasking (turning + milling + multiple spindles + moving heads / turrets / B-axis), there are many more points of potential failure or wear. Here’s what to check and how:

1. Spindles (Main & Milling / B-axis)
   • Run-out / taper condition: Insert test bars or precision tool holders, run at various speeds. Check radial and axial run-out. Any wobble = likely worn bearings or taper damage.
   • Bearing condition: Listen for noise (grind, whine) under light and heavy loads. Feel for axial / radial play when machine is off. More evident under load.
   • Speed & power drop-off: Does the spindle maintain speed under load, or does it sag? Is power degraded? Compare to what spec says.
   • Heat / thermal behavior: Run the spindle continuously, see how temperature stabilises, if there is excessive heat creep or drift. Cooling systems for spindle (if any) must be working well.
2. Turrets / Tool Changers / Lower Turret (if present)
   • Check indexing accuracy, whether tools pick up & drop off reliably. Any mis-grip or misalignment issues.
   • Condition of the tool holding mechanism: Grippers, fingers, holders. Are they worn? Any play?
   • Magazine condition: cleanliness, rust, chip contamination, wear in rails or slides.
   • Are hydraulic clamping systems (if used) working properly, consistently, with full clamping force.
3. Axes, Guides, Ball Screws, Linear/ Roller Guides
   • Check for backlash in ball screws (X, Y, Z, W axes). Use dial indicators to test backlash and repeatability.
   • Inspect guide ways: linear or roller guides if applicable. Look for scoring, rust, wear. Are the protective way covers intact & performing? Often chip ingress causes wear.
   • Lubrication: automatic lubrication systems, oiling / greasing, are all supply lines intact, no dried up or blocked lines.
4. B-Axis (Milling head / Tilt / Rotate)
   • Check the B-axis tilt range, motion smoothness, any backlash or lost motion. The gear or drive for the B-axis can wear, or the indexing may drift.
   • Run test contours or tilts under load to detect chatter or vibration particular to the B-axis.
5. Control System / Electronics
   • What controller version is installed (Mazatrol MATRIX, SmoothAi, SmoothX, etc.)? Are software updates still available? Are there known electronic issues with that version?
   • Check error logs/history: past spindle faults, over-travel incidents, B-axis faults, etc.
   • Inspect wiring harnesses, electrical panels: clean connections, no burned or overheated wires, no moisture damage.
   • Evaluate replaceability of parts: some older controls have components that are now hard to find or expensive.
6. Accuracy / Calibration / Geometric Testing
   • Run repeatability tests: move to a reference point, move away, return, see if it comes back to same point.
   • Volumetric or geometric tests: check squareness (X-Z, Y-Z), flatness of bed/table, alignment of turrets, alignment between spindles (if dual spindle), alignment of milling spindle relative to turning spindle(s).
   • Machining test: produce a sample part that exercises turning + milling + B-axis tilt if you’ll need those, then measure critical tolerances & surface finish.
7. Utilization History & Maintenance Records
   • Total hours of operation (turning, milling), spindle hours, how often run.
   • What materials were machined: steel, cast iron, aluminum, exotic materials? Heavy or abrasive materials age components faster.
   • Environmental conditions: Is the machine kept in clean shop, climate controlled? How about coolant (type, maintenance, contamination)? How about chip management?
8. Coolant, Lubrication, and Auxiliary Systems
   • Coolant system: pump condition, filters, nozzles, hoses, coolant purity. High-pressure coolant (if present) check for leaks, correct pressure.
   • Lubrication system: auto lube, lines, check for leaks, blocked lines, check rate. Ensure machine isn’t being run dry in any way.
   • Chip handling: conveyors, chips falling into unwanted areas, cleaning of trays. Any chip build-up under tool magazines or under the spindle can cause issues.
9. Mechanical Condition and Physical Integrity
   • Check for rust and corrosion (especially on exposed surfaces, slides, bed ways, cover bottoms).
   • Inspect way covers / guarding: are they damaged, torn, misaligned?
   • Doors, access panels, covers in good shape? Interlocks working?
   • Bed / foundation: is the machine level? Any previous body damage/crashes?
10. Capacity / Fit for Your Application
    • Will the “envelope” of that particular used unit (main spindle, second spindle, milling head, turrets) handle your part size, weight, clamping and fixturing?
    • Check swing, chuck bore, bar capacity if you’re doing bar work.
    • Does the milling spindle speed & torque meet the cutting conditions for materials you will use (especially if you expect heavy slotting or large diameter milling)?
    • Tool size, tool shank types, tool change times, tool reach – long tools can cause vibration or collision issues.
11. Support / Spare Parts / Local Service
    • Are spare parts available locally or via import? How costly? What’s lead time?
    • Does Mazak or third-party tech support exist in your area for this model? Are there experienced service people for Integrex in your country?
    • Manuals, parts lists, software licenses – are they all included or transferable?
12. Safety / Regulatory Compliance
    • Safety interlocks have to be working.
    • Guarding, chip shields, coolants must meet safety / environmental regulations.
    • Emissions (coolant mist, coolant disposal) as per local regulations.

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What to Ask the Seller / Evidence / Documentation to Insist On

To make an informed decision, you should ask or demand:

• Maintenance / service records: spindles overhauls, major part replacements, breakdowns, crashes.
• Spindle hour meter and usage logs.
• Calibration / alignment certificates, if available.
• Proof of any accidents (e.g. tool crashes) and what repairs were made.
• Photos of the machine in operation, but also non-obvious parts (inside tool magazines, under head covers, wiring area, spindle taper, way surfaces).
• Software / control backup: programs, offsets, parameters.
• Test-cut sample parts: ideally similar to what you will produce.
• Demonstration under load: both turning and milling, including using milling (B-axis) functions if you intend to use those.
• Possibly independent inspection by a technician / metrologist.

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Red Flags / Warning Signs

Things that often turn into expensive headaches:

• Spindle with noticeable run-out, vibration, or noise. Early bearing wear often starts small but costs big.
• Damaged or misaligned way covers or slide ways. If chips or dirt have been allowed inside, it’s often already worn.
• Lower turret (if present) that doesn’t index cleanly or has tool interference problems.
• B-axis that has drift, is loose, or shows backlash.
• Control system with obsolete parts or software no longer supported.
• Missing/smoke-damaged or corroded electrical panels.
• Poor / irregular maintenance history, especially gaps.
• Large tool holders or holders worn or abused.
• Coolant system poorly maintained; contaminated coolant can corrode inside surfaces; rust, sludge, or microbial growth.
• Gap between what’s advertised and what you need (e.g. ram speeds, spindle speeds, magazine capacity).

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Hidden Costs / What to Budget For

Even if a used machine looks good, getting to “good production ready” may require extra investment. Budget for:

• Spindle bearing replacement or overhauls.
• Alignment / geometric calibration (may need external metrology equipment or service).
• Tooling, fixtures, holders, adaptors.
• Control / software update or retrofit (if control version is old).
• Moving / rigging / installation, leveling, foundation work.
• Return to factory spec parts (seals, way covers, slide components).
• Utilities: you may need to upgrade your electrical, coolant, compressed air, etc.
• Operator training (Integrex is complex; multiple spindles, multi-channel programming, trade-offs in using Mazatrol vs external CAM etc.).

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Typical Strengths & Weaknesses of Used Integrex i-200s (What Users Say)

From user / forum / marketplace feedback, these are strengths and frequent problem areas:

• Strengths: Excellent for “done-in-one” work: turning + milling + off-center work, complex geometries. Saves setup time. Good rigidity in many H-series models; strong build quality. High throughput if well maintained.
• Weaknesses / Risks:
  1. Alignment drift: due to crashes or heavy loads, the head, spindles or turrets may get misaligned. Getting back to spec can be non-trivial. For example, people on forums remark that Integrex machines “are easy to knock out of alignment,” and once misaligned, expensive to bring back.
  2. Control / electronics wear: older controllers (e.g. the older Mazatrol Matrix etc.) may have hard drive issues, aged electronic components. Users have reported Nexus 640 or others having HDD failures.
  3. Tool changer / magazine wear: because of the multi-channel, multi-tool nature, these systems are heavily used and often have wear in the tool arms, grippers, rails etc.
  4. Spindle performance degradation: main or milling spindle bearings wear, causing noise or vibration under load, drop in finish or tool life.
  5. Cycle time loss due to mis-tuning or incorrect offsets: older machines often require more maintenance to hold tolerances and repeatability. Machine being “cold” can introduce more slop or backlash than when warm.