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Technical parameters of GMC4227H Gantry Machining Center with T Ram
Features
1. GMC4227H Gantry Machining Center with T Ram bed, worktable, columns, beam, sliding saddle, headstock with T Ram adopts high-strength cast iron, formed from resin sand and ribs layout to provide good rigidity and stability.
2. Gantry Machining Center with T Ram spindle system adopts rectangular sliding guideway and synchronous belt drive, equipped with hydraulic balance system, imported high speed spindle unit with large torque, high rotary speed, low noise, high cutting efficiency which meets the customers’ requirements of high speed of boring and milling.
3. Imported precision ball screws are driven by servo feed motor with high performance on X/Y/Z axes, high transmission accuracy, accurate positioning and good stability; machining precision and service life are improved.
4. Bed guideway (X-axis) adopts imported heavy duty roller linear guideway, small friction force, strong carrying capacity, high sensitivity, low speed without crawling, small vibration during high-speed, high positioning precision, superior servo drive performance, strong damping capacity.
5. Beam guideway (Y-axis) adopts cast-iron guideway with steel inserted, enabling the ability of anti-bent and anti-torsion improved, the unload mechanism settled on the guideway can reduce sliding friction and improve positioning accuracy and repeatability.
6. Headstock guideway (Z-axis) utilizes cast-iron guideway with plastic pasted, large contact area, strong carrying capacity, good absorbency of vibration and stability of accuracy, ensures stable cutting.
7. Automatic chip conveyor is respectively put on both sides of the worktable; diverse safe-guards can be changed; equipped with half-closure shielding, the machining safety could be improved.
8. SIEMENS 840D and FANUC control system can be selected. Various types of tool magazine can be equipped, various forms of milling heads can be added, and various spindles cooling system can be changed, installed with precision linear encoder and paper tape filter system.
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.
| Model | Unit | GMC4227H | |
|---|---|---|---|
| Worktable size | mm | 2000x4000 (7.9x16”) | |
| Max load of worktable | kg | 20000 | |
| Table travel (X axis) | mm | 4200 (165”) | |
| Saddle travel (Y axis) | mm | 2700+400 (ATC) (106”+16”) | |
| Ram travel (Z axis) | mm | 1250 (49”) | |
| Distance from spindle nose to worktable surface | mm | 250~1500 (9.8-59”) | |
| Distance between two columns | mm | 2700 (106”) | |
| Tool shank | BT50 | ||
| Spindle speed range | r/min | 40~4500 | |
| Max output torque | Nm | 770 / 910 | |
| Main motor power | kW | 22 / 26 | |
| Ram section | mm | 500x450 (20x18”) | |
| Rapid traverse of X/Y/Z axis | m/min | 10 / 10 / 10 | |
| Max tool diameter/length/weight | mm/mm/kg | Φ125 / 350 / 20 (4.9” / 14” / 20) | |
| Max tool diameter (neighbor empty) | mm | Φ225 (8.9”) | |
| ATC time(tool- tool) | s | 2.91 | |
| Positioning (X/Y/Z) | no grating | mm | 0.035/0.03/0.03 |
| with grating | mm | 0.02/0.018/0.02 | |
| Repositioning (X/Y/Z) | no grating | mm | 0.019/0.015/0.013 |
| with grating | mm | 0.013/0.011/0.011 | |
| Total capacity of the electrical machine | kVA | 80 | |
| CNC system | FAUNC 0i-MD | ||
| Net weight | kg | 55000 | |
| Floor space | mm | 12500×5500×6300 | |
Features
1. GMC4227H Gantry Machining Center with T Ram bed, worktable, columns, beam, sliding saddle, headstock with T Ram adopts high-strength cast iron, formed from resin sand and ribs layout to provide good rigidity and stability.
2. Gantry Machining Center with T Ram spindle system adopts rectangular sliding guideway and synchronous belt drive, equipped with hydraulic balance system, imported high speed spindle unit with large torque, high rotary speed, low noise, high cutting efficiency which meets the customers’ requirements of high speed of boring and milling.
3. Imported precision ball screws are driven by servo feed motor with high performance on X/Y/Z axes, high transmission accuracy, accurate positioning and good stability; machining precision and service life are improved.
4. Bed guideway (X-axis) adopts imported heavy duty roller linear guideway, small friction force, strong carrying capacity, high sensitivity, low speed without crawling, small vibration during high-speed, high positioning precision, superior servo drive performance, strong damping capacity.
5. Beam guideway (Y-axis) adopts cast-iron guideway with steel inserted, enabling the ability of anti-bent and anti-torsion improved, the unload mechanism settled on the guideway can reduce sliding friction and improve positioning accuracy and repeatability.
6. Headstock guideway (Z-axis) utilizes cast-iron guideway with plastic pasted, large contact area, strong carrying capacity, good absorbency of vibration and stability of accuracy, ensures stable cutting.
7. Automatic chip conveyor is respectively put on both sides of the worktable; diverse safe-guards can be changed; equipped with half-closure shielding, the machining safety could be improved.
8. SIEMENS 840D and FANUC control system can be selected. Various types of tool magazine can be equipped, various forms of milling heads can be added, and various spindles cooling system can be changed, installed with precision linear encoder and paper tape filter system.
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.
Features
1. GMC4227H Gantry Machining Center with T Ram bed, worktable, columns, beam, sliding saddle, headstock with T Ram adopts high-strength cast iron, formed from resin sand and ribs layout to provide good rigidity and stability.
2. Gantry Machining Center with T Ram spindle system adopts rectangular sliding guideway and synchronous belt drive, equipped with hydraulic balance system, imported high speed spindle unit with large torque, high rotary speed, low noise, high cutting efficiency which meets the customers’ requirements of high speed of boring and milling.
3. Imported precision ball screws are driven by servo feed motor with high performance on X/Y/Z axes, high transmission accuracy, accurate positioning and good stability; machining precision and service life are improved.
4. Bed guideway (X-axis) adopts imported heavy duty roller linear guideway, small friction force, strong carrying capacity, high sensitivity, low speed without crawling, small vibration during high-speed, high positioning precision, superior servo drive performance, strong damping capacity.
5. Beam guideway (Y-axis) adopts cast-iron guideway with steel inserted, enabling the ability of anti-bent and anti-torsion improved, the unload mechanism settled on the guideway can reduce sliding friction and improve positioning accuracy and repeatability.
6. Headstock guideway (Z-axis) utilizes cast-iron guideway with plastic pasted, large contact area, strong carrying capacity, good absorbency of vibration and stability of accuracy, ensures stable cutting.
7. Automatic chip conveyor is respectively put on both sides of the worktable; diverse safe-guards can be changed; equipped with half-closure shielding, the machining safety could be improved.
8. SIEMENS 840D and FANUC control system can be selected. Various types of tool magazine can be equipped, various forms of milling heads can be added, and various spindles cooling system can be changed, installed with precision linear encoder and paper tape filter system.
1. GMC4227H Gantry Machining Center with T Ram bed, worktable, columns, beam, sliding saddle, headstock with T Ram adopts high-strength cast iron, formed from resin sand and ribs layout to provide good rigidity and stability.
2. Gantry Machining Center with T Ram spindle system adopts rectangular sliding guideway and synchronous belt drive, equipped with hydraulic balance system, imported high speed spindle unit with large torque, high rotary speed, low noise, high cutting efficiency which meets the customers’ requirements of high speed of boring and milling.
3. Imported precision ball screws are driven by servo feed motor with high performance on X/Y/Z axes, high transmission accuracy, accurate positioning and good stability; machining precision and service life are improved.
4. Bed guideway (X-axis) adopts imported heavy duty roller linear guideway, small friction force, strong carrying capacity, high sensitivity, low speed without crawling, small vibration during high-speed, high positioning precision, superior servo drive performance, strong damping capacity.
5. Beam guideway (Y-axis) adopts cast-iron guideway with steel inserted, enabling the ability of anti-bent and anti-torsion improved, the unload mechanism settled on the guideway can reduce sliding friction and improve positioning accuracy and repeatability.
6. Headstock guideway (Z-axis) utilizes cast-iron guideway with plastic pasted, large contact area, strong carrying capacity, good absorbency of vibration and stability of accuracy, ensures stable cutting.
7. Automatic chip conveyor is respectively put on both sides of the worktable; diverse safe-guards can be changed; equipped with half-closure shielding, the machining safety could be improved.
8. SIEMENS 840D and FANUC control system can be selected. Various types of tool magazine can be equipped, various forms of milling heads can be added, and various spindles cooling system can be changed, installed with precision linear encoder and paper tape filter system.
Technical parameters of GMC4227H Gantry Machining Center with T Ram
| Model | Unit | GMC4227H | |
|---|---|---|---|
| Worktable size | mm | 2000x4000 (7.9x16”) | |
| Max load of worktable | kg | 20000 | |
| Table travel (X axis) | mm | 4200 (165”) | |
| Saddle travel (Y axis) | mm | 2700+400 (ATC) (106”+16”) | |
| Ram travel (Z axis) | mm | 1250 (49”) | |
| Distance from spindle nose to worktable surface | mm | 250~1500 (9.8-59”) | |
| Distance between two columns | mm | 2700 (106”) | |
| Tool shank | BT50 | ||
| Spindle speed range | r/min | 40~4500 | |
| Max output torque | Nm | 770 / 910 | |
| Main motor power | kW | 22 / 26 | |
| Ram section | mm | 500x450 (20x18”) | |
| Rapid traverse of X/Y/Z axis | m/min | 10 / 10 / 10 | |
| Max tool diameter/length/weight | mm/mm/kg | Φ125 / 350 / 20 (4.9” / 14” / 20) | |
| Max tool diameter (neighbor empty) | mm | Φ225 (8.9”) | |
| ATC time(tool- tool) | s | 2.91 | |
| Positioning (X/Y/Z) | no grating | mm | 0.035/0.03/0.03 |
| with grating | mm | 0.02/0.018/0.02 | |
| Repositioning (X/Y/Z) | no grating | mm | 0.019/0.015/0.013 |
| with grating | mm | 0.013/0.011/0.011 | |
| Total capacity of the electrical machine | kVA | 80 | |
| CNC system | FAUNC 0i-MD | ||
| Net weight | kg | 55000 | |
| Floor space | mm | 12500×5500×6300 | |
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.
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.
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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.