Here’s a detailed, professional guide you can use to “Make the Right Move” when evaluating a used / second-hand / surplus / pre-owned Index V200 CNC Vertical (Turret) Lathe (Vertical Turning Center, made in Germany / by Index). Use this as a checklist and decision tool to minimize risk and ensure you acquire a machine that will reliably perform.

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1. Know What You’re Dealing With — Baseline Specs & Architecture

Before going on-site, arm yourself with reference specifications so you can spot deviations and red flags. Below is a sampling of typical specs for the Index V200 as found in used-machine listings and original documentation:

Parameter	Typical / Published Value	Notes / Sources
Spindle speed	up to 6,000 rpm	Listing: “Rotation speed 6000 rpm”
X / Z travels	X = 200 mm, Z = 520 mm	Used-listing shows X 200 / Z 520 mm
Turning diameter over bed	~ 200 mm / 260 mm unrun	Listing: “Turning diameter: 200 mm, Unrun diameter: 260 mm”
Spindle / Power / Torque	10 kW, 49 Nm (for some units)	From used listing
Control system	Siemens Sinumerik / INDEX C200-4 / comparable CNC	Many listings show Siemens / INDEX control
Table / Tool turret / Features	Turret with ~14 tool stations, driven tools, C-axis, chip conveyor	Listings mention turret, C-axis, driven tools
Machine size & weight	~ 2,100 × 2,100 × 2,300 mm; ~3,200–3,740 kg	From used listings
Original design spec (from quote)	Spindle bore D30, indexing steps, 13 vertical + 7 horizontal slots on tool table, X/Z travels 520/200 mm, tool turret, AC drives, CNC control C 200-4 built similar to Sinumerik 840C

These are your benchmark targets. If a candidate unit is significantly under these specs, be suspicious.

Also, the “V200” is typically a vertical turret lathe / vertical turning CNC, not a horizontal lathe. Always confirm that seller is not mislabeling other machines as “V200”.

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2. Pre-Screening (Remote / Before Visit)

Do this before you commit time or travel:

1. Request documentation & photos
   • Full spec sheet, serial number, build year, control type, and modifications.
   • Internal photos: control cabinet, wiring, spindle, turret, slides, chip area.
2. Request video or live demo
   • Motion of axes (X, Z), turret indexing, spindle start/stop, programmed sample cuts.
   • Listen for unusual noises or jerky motion.
3. Ask about maintenance / service history
   • Spindle rebuilds, major repairs, parts replaced (ways, screws, motors).
   • Has the machine been relocated (which can cause misalignment)?
4. Verify spare parts availability
   • Parts for Index / V200 (turret parts, control modules, motors) should still be obtainable.
   • Ask for parts lists or past procurement receipts.
5. Insist on acceptance testing rights
   • Seller should agree to allow you to test under load before final acceptance.
   • Confirm that machine is “as-is” but inspection is allowed.

If remote answers are evasive or documentation is missing, that’s a red flag.

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3. On-Site Inspection & Detailed Check

When on site, follow this systematic process, with measurement instruments, indicator, test pieces, etc.

A. Mechanical & Structural Checks

1. Frame, base & castings
   • Check for cracks, weld repairs, distortions, or signs of mechanical shock.
   • Use straightedges, granite plates, feeler gauges to check flatness and vertical alignment.
2. Slides / ways / guides
   • Move axes at slow speed; feel for roughness, stiction, jumps, or play.
   • Inspect for wear, scoring, contaminants, corrosion.
   • Check lubrication system (oil ways, wipers, drip points).
3. Ball screws / lead screws / backlash
   • Measure backlash by pushing forward/backward in increments.
   • Inspect screw threads for wear, pitting, corrosion.
   • Confirm adequate lubrication to screw / nut assemblies.
4. Spindle / headstock / bearings
   • Mount a test arbor or dummy part; spin spindle to rated rpm and measure radial/axial runout.
   • Listen/feel for noise or vibration.
   • Run full cycle and check temperature stability.
5. Turret / tool magazine / indexing
   • Cycle all turret stations; check indexing speed, accuracy, and clamping tightness.
   • Inspect turret mounting, keying, and locking mechanisms.
   • If driven tools or live tooling exist, test their function.
6. C-axis (if equipped) & additional rotary features
   • If the machine has C-axis or additional rotary axes, test their motion, backlash, indexing accuracy.
7. Chip area, coolant system & chip disposal
   • Inspect chip conveyor, sump, coolant pump, piping, filters, leaks.
   • Check whether coolant has contamination, sludge, or signs of poor maintenance.

B. Electrical, Control & Safety

1. Control cabinet & drives
   • Open and inspect wiring, connectors, signs of overheating (discoloration, burnt insulation).
   • Ensure that drives, servo amplifiers, and power supplies are intact, clean, and ventilated.
2. Control & CNC panel
   • Power up CNC; navigate menus, issue axis motion commands, check for alarms or error history.
   • Request backup of parameters, program files, offsets.
3. Limit switches / safety circuits / emergency stop
   • Test that limit switches trigger motion stop.
   • Activate E-stop and confirm all axes halt motion immediately.
4. Sensors, encoders & feedback systems
   • Verify position sensors, linear scales (if present), encoders, and feedback loops operate correctly.
5. Cabling & signal wiring
   • Examine wiring harnesses for damage, insulation wear, poor splices, loose connectors.

C. Functional & Performance Testing

1. Dry motion / no-cut runs
   • Run axes through full travel without load; observe smoothness, noise, unexpected behavior.
   • Issue small incremental moves to check accuracy vs commanded.
2. Test cutting / turning sample parts
   • Use a known test part (tubular or round bar) and perform turning: rough, finish, contour operations.
   • Measure dimensional accuracy (diameter, height, parallelism), surface finish, run-out.
   • Test extreme positions (near travel limits).
3. Turret tool change under load / live tooling (if present)
   • Use all turret stations; verify tool changes are reliable and consistent.
   • If live tooling / driven tools are installed, test their performance (milling, drilling).
4. Extended run / stability test
   • Run for 1 hour or more under workload. Re-check key dimensions before and after to see drift.
5. Repeatability & return-to-zero
   • Move to a position, retract, and return; measure deviation.
   • Perform repeated identical cycles to quantify consistency.

D. Documentation, History & Parts

1. Serial number & build history
   • Validate the serial, model, manufacturing location (Index is German).
   • Match with original specification sheets or factory records if available.
2. Maintenance / repair log
   • Review history of spindle rebuilds, slide refurbishment, major mechanical repairs.
   • Note any undocumented time where machine was idle or under repair.
3. Spare parts & tooling availability
   • Confirm availability of turret parts, control modules, drives, sensors, bearing spares.
   • Ask for parts lists, wear part replacement history.
4. Software / CNC parameters / backups
   • Ensure you get the CNC system backup (offsets, tool tables, programs).
   • Ask whether the control is locked or has modules missing.
5. Contractual safeguards
   • Insist on a conditional acceptance period.
   • Define minimum acceptable test results (dimensional tolerances, repetition, etc.) in contract.

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4. Key Red Flags & What to Avoid

Here’s a list of warning signs that should raise serious concerns or result in major discounting:

• Excessive play, backlash, or binding in axes.
• Spindle bearing noise, overheating, or high runout.
• Turret mis-indexing, loose turret, or poor clamping.
• Control or drive failures, missing modules, corrupted software.
• Strong wiring damage, burnt components in control cabinet.
• Poor or missing lubrication maintenance.
• Neglected coolant / chip systems (rust, clogging, leaks).
• Distorted frames, cracks, previous heavy repair evidence.
• Large deviation in test part results relative to your tolerance.
• Seller refusing test under load or turning sample parts.
• Obsolete control or parts (if drives, controllers are no longer supported).

If multiple red flags appear, the risk may outweigh any cost savings.

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5. Acceptance Criteria & Decision Rules

Set clear pass/fail thresholds before you commit. For example:

• Must hold diametric tolerance within your spec (e.g. ± 0.02 mm or tighter) on test parts.
• Backlash and repeatability of axes must be within your acceptable limits.
• Turret must index reliably without misses or errors.
• Control and drives must operate without errors or temperature drift for extended run.
• Control software and parameter backup must be fully transferred.
• Spares / critical parts must be available locally or globally.
• The repair / refurbishment cost (if needed) plus transport and commissioning must still leave you a margin vs buying a newer or better machine.
• Seller must give you conditional acceptance and a hold-back clause pending post-install testing.

Meeting these ensures you minimize post-purchase surprises.

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6. Logistics, Installation & Commissioning

Once you purchase:

• Arrange safe rigging and transport — vertical lathes are heavy and require precise handling.
• At installation, level and align base and reference surfaces first.
• Realign spindle, axes, and turret after settling.
• Prior to production, run full end-to-end test parts.
• Keep spare parts (bearings, tools, encoders, drives) ready from day one.
• Establish preventive maintenance and calibration schedule.