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GMC8030H Moving Column Gantry Machining Center
  • GMC8030H Moving Column Gantry Machining Center

GMC8030H Moving Column Gantry Machining Center

GMC8030H Moving Column Gantry Machining Center could be equipped with self-developed milling heads, automatic head storage magazine and vertical / horizontal ATC system to provide high added cutting capabilities for large work pieces.
  • GMC8030H Moving Column Gantry Machining CenterDownload
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Technical parameters of GMC8030H Moving Column Gantry Type Machining Center
Model Unit GMC8030H
CNC system   Siemens 828DSL
Effective width between double columns mm 3000
Worktable size mm 8000x2500
T slot (width x distance) mm 28x200
X axis travel mm 8000
Y axis travel mm 3200
Z axis travel mm 1700
Min. distance from spindle nose to worktable surface mm 450-21500
Spindle bearing diameter mm 160
Spindle taper   ISO 60
Spindle speed range rpm 1500
Spindle motor power kW 51
Ram section size mm 500x500
Rapid speed X/Y/Z m/min 6/6/6
Cutting feed speed X/Y mm/min 1-6000
Tool capacity (optional) Max tool diameter mm Φ350
Max tool weight mm 600
Max tool length kg 35
Air pressure kgf/cm² 5
Machine total power kW 200
Machine dimension (L x W x H) mm 15953x8000×10257
 
Equipments
1. Spindle cooling system;
2. BF gearbox;
3. X/W axis grating scale;
4. MPG;
5. Automatic lubrication;
6. Oil water separator;                                                           
7. Rigid tapping;
8. Automatic power off;
9. Work light;
10. Leveling bolt;
11. Oil gun and air gun;
12. Chip conveyor;


Optionals
1. Universal milling head;
2. Angle Milling head;
3. Extended milling head (L: 700mm);
4. Extended narrow milling head;

 
Main equipment of GMC8030H Moving Column Gantry Type Machining Center
1 CNC controller SIEMENS, Germany
2 Servo motor SIEMENS, Germany
3 X/Y/Z servo driver SIEMENS, Germany
4 Grating scale Fagor, Spanish
5 Ball screw HINWIN/SHUTON, Taiwan/Spanish
7 X1/X2 / Y reducer and gear rack WMH, Germany
8 Ball screw bearing HIWIN, Japan
9 Proximity switch Omron, Germany
10 Gearbox BF, Italy
11 Spindle DFL, Taiwan
12 Spindle belt GATES, USA
13 Spindle bearing FAG, Germany
14 Main contactor TE, France
15 Limit switch BALLUFF, Germany
16 Other electrical parts EAO, Switzerland
TE, France
WAGO, Germany
17 Hydraulic pump and solenoid valve COMPAS, Taiwan
18 Filter COMPAS, Taiwan

FORTUNE PACIFIC is proud to offer a variety of gantry milling machines. Engineered and constructed to the highest caliber, these Bridge/gantry type machining centers allow for high volume accuracy, extreme weight allowance, and the ability to approach the part from multiple angles.

Bridge/Gantry Type Machining Center
Introducing with mature manufacturing abilities and advanced technology skills, the GMC series gantry type machining center combines gantry type structure with adjustable crossbeam mechanism, strong horse power and high rigidity features, to provide you with a complete machining solution for extra large work pieces. Bridge/Gantry Type Machining Center has been widely used in aerospace, shipbuilding, energy and machine tools industries.

The Bridge/Gantry Type Machining Center could be equipped with automatic head changer and vertical / horizontal ATC system to provide maximum efficiency as of a 5-face machining center.

Complete product line with full range specifications, the Bridge/Gantry Type Machining Center could be equipped with self-developed milling heads, automatic head storage magazine and vertical / horizontal ATC system to provide high added cutting capabilities for large work pieces.
Main equipment of GMC8030H Moving Column Gantry Type Machining Center
1 CNC controller SIEMENS, Germany
2 Servo motor SIEMENS, Germany
3 X/Y/Z servo driver SIEMENS, Germany
4 Grating scale Fagor, Spanish
5 Ball screw HINWIN/SHUTON, Taiwan/Spanish
7 X1/X2 / Y reducer and gear rack WMH, Germany
8 Ball screw bearing HIWIN, Japan
9 Proximity switch Omron, Germany
10 Gearbox BF, Italy
11 Spindle DFL, Taiwan
12 Spindle belt GATES, USA
13 Spindle bearing FAG, Germany
14 Main contactor TE, France
15 Limit switch BALLUFF, Germany
16 Other electrical parts EAO, Switzerland
TE, France
WAGO, Germany
17 Hydraulic pump and solenoid valve COMPAS, Taiwan
18 Filter COMPAS, Taiwan
Technical parameters of GMC8030H Moving Column Gantry Type Machining Center
Model Unit GMC8030H
CNC system   Siemens 828DSL
Effective width between double columns mm 3000
Worktable size mm 8000x2500
T slot (width x distance) mm 28x200
X axis travel mm 8000
Y axis travel mm 3200
Z axis travel mm 1700
Min. distance from spindle nose to worktable surface mm 450-21500
Spindle bearing diameter mm 160
Spindle taper   ISO 60
Spindle speed range rpm 1500
Spindle motor power kW 51
Ram section size mm 500x500
Rapid speed X/Y/Z m/min 6/6/6
Cutting feed speed X/Y mm/min 1-6000
Tool capacity (optional) Max tool diameter mm Φ350
Max tool weight mm 600
Max tool length kg 35
Air pressure kgf/cm² 5
Machine total power kW 200
Machine dimension (L x W x H) mm 15953x8000×10257
Optionals
1. Universal milling head;
2. Angle Milling head;
3. Extended milling head (L: 700mm);
4. Extended narrow milling head;

Knee Type Milling Machine: Precision Versatility for Industrial Manufacturing

What is a Knee Type Milling Machine?

A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.

Working Principle

The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.

Key Applications

  • Tool & Die Making: Precision molds, jigs, fixtures
  • Prototyping: Rapid part development
  • Maintenance Shops: Equipment repair & part fabrication
  • General Machining: Slotting, drilling, facing, keyway cutting
  • Aerospace & Automotive: Component manufacturing

Distinctive Features & Advantages

  • Vertical Adjustability: Knee movement enables quick workpiece height changes
  • Rigid Construction: Robust cast iron frame ensures stability
  • Manual & CNC Options: Traditional control or computer numerical precision
  • Turret Design (Common): Swiveling milling head for multi-angle machining
  • Wide Workpiece Compatibility: Handles various sizes and shapes

Primary Classifications

  • Vertical Knee Mill: Spindle axis perpendicular to table (most common)
  • Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
  • Universal Knee Mill: Table swivels for complex angular cuts
  • Turret Mill: Head rotates on turret for flexible positioning

Main Components

  • Base & Column: Primary support structure
  • Knee: Vertically moving saddle supporting the table
  • Saddle & Table: Hold and position the workpiece (X/Y axes)
  • Milling Head: Houses spindle, motor, and quill (Z-axis)
  • Arbor/Spindle: Rotating shaft holding cutting tools
  • Controls: Manual handwheels or CNC interface

Evolution & Industry Significance

Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.

Fortune Pacific: Your Knee Mill Solution

At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.

Keywords: Knee Type Milling Machine, Vertical Milling Machine, Horizontal Mill, Turret Mill, Knee-and-Column Mill, Milling Machine for Sale, Industrial Milling, Metalworking Equipment, Workshop Machinery, CNC Mill, Toolroom Mill, Precision Machining, Fortune Pacific, Machine Tool Manufacturer.