USED DOOSAN PUMA 400C – 2000

The 2000 Doosan Puma 400C is a heavy-duty CNC turning center engineered for machining large-diameter and long workpieces with exceptional rigidity and precision. Manufactured by Doosan Machine Tools (formerly Daewoo Heavy Industries, now DN Solutions), the Puma 400C was designed to meet the demanding requirements of industries such as oil and gas, power generation, mining, heavy equipment, and general industrial manufacturing. Its powerful spindle, rigid box guideway construction, and large machining capacity have made it one of the most respected heavy-duty CNC lathes in the used equipment market.

Built with a robust slant-bed design and hardened box guideways, the Puma 400C minimizes vibration during aggressive cutting operations while maintaining outstanding dimensional accuracy. The machine is capable of machining large steel, cast iron, stainless steel, and alloy components with ease. Equipped with a high-torque geared spindle, programmable tailstock, and heavy-duty hydraulic chuck, the Puma 400C is ideal for both roughing and finishing operations on oversized parts. Its large work envelope allows manufacturers to machine shafts, rollers, flanges, valve bodies, and other long cylindrical components efficiently.

Most 2000 Doosan Puma 400C machines are equipped with a FANUC CNC control, providing reliable G-code programming, proven performance, and easy integration into existing manufacturing environments. The machine supports turning, facing, boring, grooving, threading, drilling, and taper turning operations with high repeatability. Depending on the configuration, optional features such as a programmable steady rest, chip conveyor, hydraulic tailstock, and larger spindle bore further expand the machine’s production capabilities.

The Doosan Puma 400C is widely used throughout the oil and gas, energy, heavy equipment, transportation, steel processing, agricultural equipment, and industrial manufacturing sectors. Typical applications include hydraulic cylinders, large shafts, bearing housings, pump bodies, transmission components, pipe fittings, valve components, rollers, and custom-machined industrial parts. Its combination of heavy-duty cutting performance and dependable accuracy makes it well suited for both low-volume job shop work and continuous production machining.

Purchasing a used 2000 Doosan Puma 400C provides manufacturers with a cost-effective solution for large-part CNC turning. Doosan machines are recognized worldwide for their rugged construction, long service life, and dependable performance. Even after decades of operation, a properly maintained Puma 400C continues to deliver excellent machining accuracy and productivity, making it an outstanding investment for manufacturers seeking reliable heavy-duty CNC turning capacity.

DOOSAN PUMA 400C – 2000 SPECIFICATIONS

Axis

Travels / Work Envelope

Table / Workholding

Spindle

Tool Changer

CNC Control

Coolant / Chip Management

Power Requirements

Dimensions

General Information

HOW MUCH DOES A USED DOOSAN PUMA 400C – 2000 COST?

A used 2000 Doosan Puma 400C typically sells for $25,000 to $60,000 USD, depending on its overall condition, spindle hours, maintenance history, tooling package, and optional equipment such as a programmable tailstock, steady rest, chip conveyor, or larger spindle bore configuration. Machines with documented service records, low operating hours, and upgraded FANUC controls generally command higher resale values.

When purchasing a used Puma 400C, buyers should inspect spindle condition, gearbox performance, box guideway wear, turret indexing accuracy, and machine geometry. A properly maintained machine can continue delivering reliable heavy-duty machining performance for many years, making it an excellent investment for manufacturers that regularly machine large, high-value components while avoiding the significantly higher cost of purchasing a new CNC turning center.

DOOSAN PUMA 400C VS DOOSAN PUMA 400B – WHICH ONE TO BUY?

The Doosan Puma 400C and the Doosan Puma 400B are heavy-duty CNC horizontal turning centers designed for machining large, high-precision components. Both machines are built for demanding industries such as oil and gas, power generation, mining, heavy equipment, aerospace, and general industrial manufacturing. While they share a rigid box-way construction and high-torque spindle design, the Puma 400C is the newer generation, offering improvements in machine rigidity, control technology, operator ergonomics, and overall machining efficiency.

The Doosan Puma 400B has earned a strong reputation for durability and dependable performance in production environments. It is well suited for machining large shafts, rollers, flanges, hubs, and heavy industrial components. Its robust construction allows it to handle aggressive cutting conditions while maintaining excellent dimensional accuracy. For shops looking for a cost-effective used CNC lathe, the Puma 400B remains an attractive option.

The Doosan Puma 400C builds upon the proven Puma platform with enhanced structural rigidity, improved thermal stability, updated Fanuc control options, faster rapid traverse rates, and better chip evacuation. Depending on configuration, it also offers larger spindle bore options, higher spindle torque, and improved automation compatibility. These upgrades make it better suited for long production runs and demanding heavy-duty machining applications. (dn-solutions.com)

If your production involves standard heavy turning operations and budget is the primary concern, the Puma 400B offers excellent value in the used machinery market. However, if you require higher productivity, improved reliability, newer CNC technology, and greater long-term efficiency, the Doosan Puma 400C is the better investment. Its improved performance and modern features help reduce downtime while increasing machining accuracy and production output.

DOOSAN PUMA 400C SPINDLE NOT TURNING – CAUSES AND TROUBLESHOOTING

If the spindle on your Doosan Puma 400C fails to rotate, the problem is often related to machine safety systems, electrical faults, hydraulic pressure, lubrication issues, or CNC programming errors rather than complete spindle failure. A systematic troubleshooting approach can quickly identify the source of the problem while minimizing unnecessary downtime.

Begin by checking the CNC control for active alarms. Emergency stop activation, open safety doors, lubrication warnings, hydraulic pressure faults, spindle drive alarms, or servo errors will automatically disable spindle operation. Ensure all machine alarms have been cleared before attempting to restart the spindle.

Next, inspect the spindle drive system. Faulty spindle amplifiers, loose electrical connections, damaged encoder cables, blown fuses, or spindle motor overloads can prevent spindle rotation. Verify that hydraulic pressure, lubrication systems, coolant flow, and pneumatic supplies are operating within specification, as inadequate pressure or lubrication can stop spindle functions. (dn-solutions.com)

Review the CNC program carefully. Missing M03 or M04 spindle commands, incorrect spindle speed settings, chuck clamp interlocks, C-axis engagement (if equipped), or interrupted tool change sequences may prevent spindle startup. After maintenance or battery replacement, machine parameters and spindle reference positions should also be verified.

If the spindle attempts to rotate but immediately stops, inspect for mechanical issues such as worn spindle bearings, seized chuck mechanisms, damaged drive belts (where applicable), excessive workpiece loading, or tooling interference. Excessive spindle vibration, abnormal noises, or overheating often indicate bearing wear requiring professional inspection.

Routine lubrication, clean electrical cabinets, regular spindle inspections, and scheduled preventive maintenance greatly reduce unexpected spindle failures. If spindle alarms remain active after completing these checks, advanced diagnostics by a qualified DN Solutions service technician are recommended to prevent further machine damage.

DOOSAN PUMA 400C MAINTENANCE AND PREVENTIVE CARE GUIDE

Proper preventive maintenance is essential for maintaining the performance, accuracy, and reliability of the Doosan Puma 400C. Built for continuous heavy-duty machining, the machine depends on well-maintained spindle systems, guideways, lubrication circuits, hydraulic components, and coolant systems to achieve consistent production and long service life.

Daily maintenance should include removing chips from the machine enclosure, chuck, turret, guideways, and work area. Operators should inspect coolant levels, coolant concentration, lubrication oil, hydraulic pressure, pneumatic pressure, and spindle cleanliness before starting production. Chuck jaws, tool holders, and workholding devices should also be checked for wear or damage.

Weekly maintenance should include cleaning electrical cabinet filters, inspecting coolant pumps, chip conveyors, hydraulic units, coolant nozzles, spindle air purge systems, and automatic lubrication systems. Turret indexing and chuck clamping performance should also be verified to ensure reliable machining throughout production.

Monthly inspections should focus on spindle runout, turret alignment, ball screws, linear guideways, encoder cables, electrical connections, coolant filtration systems, hydraulic hoses, lubrication lines, and machine leveling. Coolant tanks should be cleaned regularly to prevent contamination that can reduce tool life and machining quality.

Additional preventive care includes monitoring spindle vibration, checking backlash, inspecting spindle bearings, replacing worn filters, maintaining hydraulic systems, and verifying machine geometry. Maintaining detailed maintenance records helps identify recurring issues before they become major repairs. Shops that consistently follow preventive maintenance schedules typically experience longer spindle life, improved machining accuracy, higher productivity, better surface finishes, and significantly reduced machine downtime. (dn-solutions.com)

FAQ

What is the Doosan Puma 400C?

The Doosan Puma 400C is a heavy-duty CNC horizontal turning center designed for machining large, high-precision workpieces. It features a rigid box-way construction, high-torque spindle, servo-driven turret, advanced Fanuc CNC control, and large work envelope for demanding turning applications. The machine is widely used in oil and gas, power generation, mining, heavy equipment, aerospace, and general industrial manufacturing where strength, reliability, and precision are critical. (dn-solutions.com)

What are the most common problems with the Doosan Puma 400C?

The most common problems include spindle alarms, hydraulic pressure faults, turret indexing errors, lubrication system warnings, coolant contamination, encoder faults, servo drive alarms, chuck clamping issues, chip conveyor malfunctions, electrical communication errors, and occasional thermal compensation warnings. Most of these issues can be minimized through regular preventive maintenance, proper lubrication, scheduled inspections, coolant management, and timely replacement of wear components, helping ensure dependable long-term machine performance.