USED MAZAK QTN 100-II – 2002

The 2002 Mazak QTN 100-II is a compact, high-performance 2-axis CNC turning center designed for precision machining of small to medium-sized components. Part of Yamazaki Mazak’s Quick Turn Nexus (QTN) Series, the QTN 100-II combines a rigid machine structure, high-speed spindle, fast turret indexing, and the proven Mazatrol CNC control to deliver outstanding productivity and repeatability. Built for both short-run and high-volume production, the machine is widely used in precision manufacturing environments where reliability, accuracy, and efficient cycle times are critical. Its compact footprint also makes it an excellent solution for shops looking to maximize floor space without sacrificing machining capability.

Constructed with a heavy-duty slant-bed cast iron base, the Mazak QTN 100-II offers excellent rigidity and thermal stability for demanding turning applications. The machine features approximately 7.3 inches (185 mm) of X-axis travel and 15.2 inches (385 mm) of Z-axis travel, supporting a maximum turning diameter of approximately 11 inches (280 mm) and a machining length of approximately 13.1 inches (334 mm). Equipped with a 6-inch hydraulic chuck and a high-speed 6,000 RPM spindle, the QTN 100-II provides exceptional performance when machining aluminum, stainless steel, alloy steels, brass, titanium, plastics, and other engineering materials. The spindle’s fast acceleration and precision bearings contribute to superior surface finishes and excellent dimensional accuracy.

The 2002 model is commonly equipped with the Mazatrol Fusion 640T CNC Control, allowing operators to program using either Mazatrol conversational programming or standard ISO G-code. A 12-station servo turret provides rapid indexing and excellent repeatability while supporting a wide range of turning, boring, grooving, threading, and drilling operations. Standard equipment often includes automatic lubrication, hydraulic chuck, programmable tailstock (depending on configuration), coolant system, and chip conveyor options. The machine’s user-friendly control and dependable mechanical design have made it one of Mazak’s most successful small-frame turning centers.

The Mazak QTN 100-II is commonly found in the automotive, aerospace, medical, electronics, hydraulics, defense, and general precision manufacturing industries. Typical parts produced include shafts, bushings, hydraulic fittings, valve bodies, threaded components, connectors, medical instruments, and precision-machined production parts. Its compact size, fast cycle times, and reliable machining performance make it particularly attractive for contract manufacturers and production shops.

Purchasing a used 2002 Mazak QTN 100-II allows manufacturers to acquire a proven CNC turning center at a significantly lower investment than purchasing new equipment. Mazak machines are known for their outstanding build quality, long service life, readily available replacement parts, and excellent resale value. A properly maintained QTN 100-II continues to deliver dependable accuracy and productivity, making it one of the most popular compact CNC lathes available in the used equipment market.

MAZAK QTN 100-II – 2002 SPECIFICATIONS

Axis

Travels / Work Envelope

Spindle

Turret

CNC Control

Coolant / Chip Management

Power Requirements

Dimensions

General Information

HOW MUCH DOES A USED MAZAK QTN 100-II – 2002 COST?

A used 2002 Mazak QTN 100-II typically sells for $18,000 to $40,000 USD, depending on spindle hours, machine condition, maintenance history, tooling package, CNC control version, and installed options such as a tailstock, chip conveyor, parts catcher, or bar feeder. Machines with documented service records, low operating hours, and production-ready tooling generally command higher resale values because of their reliability and immediate usability.

Before purchasing a used Mazak QTN 100-II, buyers should inspect the spindle bearings, turret indexing accuracy, guideways, ballscrews, lubrication system, hydraulic chuck, and overall machine geometry. A properly maintained QTN 100-II offers excellent long-term value by combining compact size, high-speed machining, dependable Mazatrol controls, and proven Mazak reliability, making it an excellent investment for precision turning applications.

MAZAK QTN 100-II VS MAZAK QTN 100 – WHICH ONE TO BUY?

The Mazak QTN 100-II and Mazak QTN 100 are compact CNC turning centers designed for manufacturers requiring precision turning, high productivity, and dependable machining performance. Both machines are part of the Mazak QUICK TURN NEXUS (QTN) Series and are widely used in the automotive, aerospace, medical, electronics, oil and gas, and general precision machining industries. The primary difference between the two models is that the QTN 100-II is the second-generation machine, offering improved control technology, higher reliability, enhanced spindle performance, and refinements that increase productivity compared with the original QTN 100.

The Mazak QTN 100 is a proven CNC lathe capable of producing shafts, bushings, fittings, hydraulic components, medical parts, and other precision turned components. Its compact footprint, rigid construction, and reliable spindle make it well suited for job shops and production environments.

The Mazak QTN 100-II builds on the strengths of the original model by incorporating updated CNC technology, improved machine rigidity, smoother axis movement, and enhanced operator features. These improvements help reduce cycle times while maintaining excellent machining accuracy and repeatability.

Both machines provide outstanding turning performance for small- to medium-sized components. The QTN 100 remains a reliable and cost-effective solution for general turning applications, while the QTN 100-II offers better productivity, improved reliability, and a more modern operating experience.

For manufacturers purchasing a used CNC lathe, the Mazak QTN 100-II is generally the preferred choice due to its updated design, improved performance, and long-term serviceability.

MAZAK QTN 100-II SPINDLE NOT TURNING – CAUSES AND TROUBLESHOOTING

If the spindle on a Mazak QTN 100-II does not rotate, the problem may be caused by spindle drive faults, electrical failures, CNC control alarms, lubrication issues, hydraulic system faults, or machine safety interlocks. Proper troubleshooting helps identify the source of the problem and minimizes production downtime.

Start by checking the CNC control for active alarms. Emergency stop activation, door interlock faults, spindle drive alarms, servo errors, lubrication warnings, hydraulic pressure alarms, chuck clamping errors, or thermal overload conditions can prevent spindle operation. Clear all alarms before attempting to restart the spindle.

Inspect the spindle drive system for electrical issues. Loose electrical connections, damaged encoder cables, faulty spindle amplifiers, blown fuses, motor overload conditions, or overheating may prevent spindle rotation. Verify spindle lubrication, cooling systems, hydraulic pressure, compressed air supply, and machine power because these systems are essential for safe spindle operation.

Review the CNC program to ensure spindle commands are correct. Missing M03 or M04 commands, incorrect spindle speed settings, spindle orientation commands, chuck clamping issues, or interrupted machining cycles may prevent spindle startup.

If the spindle attempts to rotate but immediately stops, inspect spindle bearings, chuck condition, hydraulic clamping force, spindle nose cleanliness, tooling setup, and cutting loads. Excessive vibration, unusual noise, overheating, or poor workholding may indicate mechanical wear or spindle damage.

Routine spindle inspections, lubrication maintenance, hydraulic servicing, and preventive maintenance significantly reduce unexpected spindle failures and improve machine reliability.

MAZAK QTN 100-II MAINTENANCE AND PREVENTIVE CARE GUIDE

The Mazak QTN 100-II is designed for continuous precision turning in demanding production environments. Regular preventive maintenance is essential for maintaining spindle accuracy, machine reliability, and long-term productivity.

Daily maintenance should include removing chips from the machining area, spindle nose, chuck, turret, guideways, and enclosure. Operators should inspect coolant levels, coolant concentration, lubrication systems, hydraulic pressure, compressed air supply, spindle condition, and cutting tools before beginning production. Keeping the chuck and spindle clean helps maintain workholding accuracy.

Weekly maintenance should include inspecting coolant pumps, chip conveyors, lubrication units, hydraulic systems, spindle cooling systems, turret indexing operation, chuck clamping mechanisms, and electrical cabinet filters. Chip accumulation around the turret and guideways should be removed to prevent premature wear.

Monthly inspections should focus on spindle runout, chuck accuracy, turret alignment, ball screws, linear guideways, encoder cables, spindle bearings, hydraulic lines, electrical connections, lubrication systems, coolant filtration systems, and machine leveling. Machine geometry should also be checked periodically to maintain machining accuracy.

Additional preventive maintenance includes monitoring spindle vibration, checking axis backlash, replacing worn filters, servicing lubrication systems, inspecting hydraulic components, and maintaining complete maintenance records. Early detection of wear helps prevent expensive repairs and unexpected downtime.

A structured maintenance schedule improves spindle life, machining accuracy, surface finish quality, and overall production efficiency. Proper preventive care allows the Mazak QTN 100-II to deliver dependable turning performance throughout its service life.

FAQ

What is the Mazak QTN 100-II?

The Mazak QTN 100-II is a compact CNC turning center designed for precision turning, high productivity, and reliable production machining. It is part of the Mazak QUICK TURN NEXUS Series and is engineered to machine small- and medium-sized precision components with excellent accuracy and repeatability.

The machine features a rigid machine structure, powerful spindle, CNC control system, precision turret, and automatic machining capabilities that make it suitable for both job shop and production environments.

The QTN 100-II is widely used in automotive, aerospace, medical, electronics, hydraulic, oil and gas, and general manufacturing industries. It is capable of producing shafts, bushings, fittings, threaded components, valve bodies, hydraulic parts, and other precision-machined components with consistent quality and efficient cycle times.

What are the most common problems with the Mazak QTN 100-II?

The most common problems with the Mazak QTN 100-II include spindle alarms, turret indexing faults, hydraulic system problems, lubrication warnings, servo drive errors, encoder failures, coolant contamination, chuck clamping issues, spindle orientation errors, electrical communication faults, and axis positioning errors.

Machines used in continuous production may also experience spindle bearing wear, hydraulic pressure fluctuations, turret alignment issues, thermal expansion effects, and normal mechanical wear over time. Inadequate lubrication, coolant contamination, worn tooling, improper machine setup, and delayed preventive maintenance can contribute to these issues.

Routine spindle inspections, hydraulic system servicing, lubrication checks, coolant management, turret alignment verification, machine calibration, and scheduled preventive maintenance help minimize downtime and maintain the precision, reliability, and productivity of the Mazak QTN 100-II.