Mazak VTC800 20SR CNC 5-Axis Vertical Machining Center – Year 2016
4th axis Rotary Table, 5 axis, B axis, C axis, Coolant, Interlocked guards, Low Volt Light, Swarf Conveyor, Through Spindle Coolant, Tool Breakage Sensor
B Axis
-/+ 110 degrees (0.0001 degrees)
C axis
0.001 degree
Control
MAZATROL MATRIX 2
Machine Dimensions
4250 x 3550 x 3328mm
Machine Weight
14000kg
Maximum Tool Diameter
80mm
Maximum Tool Diameter with Empty Adjacent Pockets
130mm
Maximum Tool Weight
8kg
Maximum workpiece weight
1700kg
Min – Max Height under Spindle
140 – 860mm
Rapid Feedrates
50m/minute
Spindle Motor Power
35kW
Spindle Speed
18000rpm
T- Slots
7 x 18mm
Table Size
2500 x 820mm
Tool Change Capacity
30 Station
Tool Size
BT40
Traverses XYZ
2000 x 800 x 720mm
Mazak VTC-800 20SR CNC 5-Axis Vertical Machining Center – Technical Evaluation (Year 2016)
1. Technical Evaluation Overview
The Mazak VTC-800 20SR is a 5-axis vertical machining center manufactured in 2016, configured with a rotary table providing B and C axes. Based strictly on the provided information, the machine offers XYZ travels of 2,000 × 800 × 720 mm, a table size of 2,500 × 820 mm, and 7 × 18 mm T-slots. The maximum workpiece weight is 1,700 kg, with a minimum–maximum height under spindle of 140–860 mm.
The rotary axes are specified as B-axis ±110° with 0.0001° resolution and C-axis 0.001° resolution. Spindle capability includes 18,000 rpm with a 35 kW spindle motor, and rapid feedrates of 50 m/min. Tooling is BT40 with a 30-station ATC, maximum tool diameter 80 mm (or 130 mm with empty adjacent pockets), and maximum tool weight 8 kg.
Control is provided by Mazatrol MATRIX 2. Supplied equipment includes through-spindle coolant, coolant system, swarf (chip) conveyor, tool breakage sensor, interlocked guards, low-voltage work light, and the 4th/5th axis rotary table. Machine footprint is 4,250 × 3,550 × 3,328 mm, with a machine weight of 14,000 kg.
Key parameters not stated include spindle taper drawbar force, torque curve, axis acceleration, positioning accuracy/repeatability, rotary table diameter and drive type, and coolant pressure. These should be verified.
2. What to Check Before Buying
Given the configuration and missing details, inspection should focus on:
Mechanical and axes:
Verification of linear axis straightness and backlash across 2,000 / 800 / 720 mm travels.
Accuracy and rigidity of the B and C rotary axes across their full ranges; check backlash and clamping behavior if applicable.
Table flatness and integrity of 18 mm T-slots under high load (1,700 kg workpieces).
Spindle and tooling:
Condition of the 18,000 rpm BT40 spindle, including vibration and thermal stability at speed.
Confirmation of spindle power delivery (35 kW) and compatibility with intended cutting loads.
ATC reliability across 30 stations, tool diameter clearances (80/130 mm), and 8 kg tool weight limit.
Coolant, chip handling, and sensing:
Performance of through-spindle coolant (pressure not specified) and overall coolant delivery.
Functionality of the chip conveyor and tool breakage sensor.
Control and safety:
Health of the MATRIX 2 control (options, backups, alarm history).
Integrity of interlocked guards and ancillary electrical systems.
3. Typical Industrial Applications
Based strictly on the stated envelope, spindle, and 5-axis configuration, the VTC-800 20SR is technically suitable for:
Complex 5-axis milling of large prismatic components requiring simultaneous B/C interpolation.
Multi-face machining in a single setup on workpieces up to 1,700 kg.
Applications benefiting from high spindle speed (18,000 rpm) combined with substantial table capacity.
Specific materials, tolerances, and cycle performance cannot be confirmed from the provided data.
4. Common Risks in Used Machines
Typical risks for used 5-axis VMCs of this class include:
Rotary axis wear or calibration drift, affecting multi-axis accuracy.
Spindle wear, particularly at sustained high speeds.
ATC wear impacting change reliability with larger tools.
Documentation gaps, including missing parameter backups or option lists.
5. Maintenance and Service Considerations
With no service history provided, considerations are limited to general technical points:
Routine checks of spindle condition, rotary axis calibration, and lubrication systems are essential.
Chip management and coolant filtration should be monitored to maintain uptime.
CNC data and parameters should be backed up before continued operation or relocation.
Any service planning should be based on on-site inspection and functional testing rather than assumptions.
Final Note:
The Mazak VTC-800 20SR, as specified, is a large-capacity 5-axis vertical machining center with strong spindle capability and a substantial working envelope. While the provided information defines its core configuration, a complete technical evaluation requires verification of rotary table specifics, accuracy performance, coolant pressure, and control options through direct inspection and testing.
