Here’s a detailed English-language checklist from inspection to installation, tailored for a used/surplus ARIX NCE 20 CNC lathe (made in Taiwan) — ideal for your second-hand machinery platform (e.g., CNCBUL). It covers what to verify before purchase, during inspection, and ahead of installation.

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1. Machine Overview & Context

• ARIX is a Taiwanese manufacturer (since 1995) of CNC machine tools.
• While I could not find full published specs for exactly the “NCE 20” model, a listing shows a used ARIX NCE 20 (2007 model) with approx 3450 kg weight, turning diameter ~250 mm, spindle bore 54 mm, speed up to 6 000 rpm.
• Because used machines have many variables, this checklist assumes typical lathe features: bed, headstock/spindle, turret or tool-post, tailstock (optional), CNC control, chip removal, coolant system.

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2. Pre-Purchase & On-Site Inspection Checklist

A. Visual / Structural condition

• Examine bed and base: look for cracks, chips in cast base, evidence of collision or major repair.
• Check machine paint condition, rust or corrosion on exposed parts (especially in humid or dusty environment).
• Verify guarding and covers: Are protective doors intact and smoothly sliding?
• Check spindle nose and turret face / tool-post face for wear, damage or misalignment.

B. Usage & Service history

• Ask for hours of operation, count of parts made, type of material processed (hardened, abrasive, etc).
• Request service/maintenance logs: spindle bearings replaced, ball screws/guides overhauled, hydraulic/pneumatic system maintained.
• Ask cause of removal from prior service: upgrades, decommissioning, trade-in, etc. This affects risk of hidden defects.

C. Control system & software

• Identify controller brand/model: Is it original ARIX control or third-party (e.g., Fanuc, Siemens)? Confirm compatibility and servicing availability.
• Check for backup of machine parameters, program memory, licensed modules (e.g., C-axis if applicable).
• Confirm the control panel, buttons, emergency stop, operator panel are in good condition (no cracks, missing keys).
• Ask for any fault/alarms history: servo faults, spindle alarms, tool turret mis-indexing.

D. Mechanical axes & spindle tests

• Move X‐axis and Z‐axis manually (via jog): check for smooth motion, absence of loud grind/noise, consistent speed.
• Check for backlash in both axes: use dial indicator or feel for play.
• Inspect spindle: run at low speed, listen for abnormal noises (bearing rumble) and monitor temperature rise after ~10 minutes idle or under light cutting.
• Measure spindle run‐out with indicator at nose: high run‐out indicates worn bearings or misalignment.
• If turret or tool post is present: check indexing accuracy, tool change smoothness, turret locking mechanism condition.

E. Tailstock & workholding (if applicable)

• If tailstock exists: check its alignment with spindle centre, ability to lock, quill travel.
• Workholding systems: chuck condition, jaw wear, any adapter plates, bar feeder connection (if used).
• Inspect chip conveyor and coolant system: are they present, functioning, any signs of coolant contamination or leaks?

F. Safety, filtration, hydraulics/pneumatics

• Check hydraulic/pneumatic lines for leaks, cracked hoses, signs of oil seepage.
• Inspect coolant tank: look for sludge, bacterial contamination, pH control, chips accumulation.
• Electrical cabinet: check for cleanliness, smell of burnt wiring, presence of correct fuses, labels, grounding.
• Safety guards, interlocks functional? Doors stop motion when opened?

G. Accuracy & calibration verification

• Perform a small test cut/turn on known material: measure part for diameter accuracy, surface finish, repeatability.
• If available: review calibration reports or ball-screw compensation data, alignment certificates.
• Check if machine has been relocated previously (which may require re-alignment).

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3. Commercial & Contractual Considerations

• Verify the machine’s serial number, manufacture year, OEM documentation to ensure authenticity and model details.
• Confirm ownership and any liens or encumbrances on the machine.
• Clarify what is included: machine only, tooling, chuck, workholding, bar feeder, coolant unit, chip conveyor.
• Determine who is responsible for transport, installation, alignment, and commissioning – and at what cost.
• Discuss warranty or test-run period (even used machines benefit from short “machine acceptance test” period).
• Consider spare parts availability for ARIX models in Turkey/Europe and cost of import if needed.

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4. Site Preparation & Installation Readiness

• Ensure you have the foundation/load-bearing capacity for ~3.4 t machine (~3450 kg per listing) plus dynamic loads.
• Confirm power supply: voltage, phase, ampere rating, and compatibility with Turkish utility (e.g., 400 V three-phase) and the machine’s requirements.
• Check coolant, chip removal, and ventilation system are ready.
• Plan for machine transport: secure lifting points, packaging, route, customs/import, insurance.
• Prepare alignment kit, level, and shim plates to ensure machine gets installed to specification.

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5. Decision Criteria & Fit to Your Business

• Does the turning capacity (diameter, length) match your needs? For example, the listing indicated turning dia ~250 mm, turning length ~610 mm for that example NCE20 model.
• Consider total cost: purchase price + transport + installation + calibration + spare parts + downtime.
• Consider risk: Given used condition, hidden maintenance issues may surface – weigh against the price discount vs new machine.
• Ensure the machine’s specification aligns with your application (material types, precision, cycle time).
• Evaluate after-sales support moulding into your operational model – can you get parts/service locally or do you need import?

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Summary

Buying a used ARIX NCE 20 lathe can be a smart investment if you carry out a detailed inspection of mechanical, electrical, control systems, and plan for installation. The key is verifying condition, service history, accuracy, and real installation readiness.