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Technical parameters of GMC3219 Bridge Type Machining Center
Features of GMC3219 Bridge Type Machining Center
* One-piece cast iron machine bed and bridge yield in high rigidity and precise machining result.
* The frame, stress-relieving designed, provides a stable performance of the machine.
* Preload roller linear guide ways with P grade allow max. loading but with a lower friction coefficient, supplying smooth running thanks to optimized roller recirculation and guidance, saving energy consumption.
* C3 grade double nut ball screws provide precise cutting, even for heavy loads.
* GMC3219A is equipped with a BF gear box of 26kW motor generating 662Nm torque for powerful cutting.
* Two coil chip conveyors and one chain chip conveyor remove the chips effectively.
Standard accessories
FANUC 0i-MD with 8.4’’ screen; Chain chip conveyor; Coil chip conveyor; Spindle chiller;
Water gun and air gun flushing; Machining air blowing device; Heat exchanger for electric cabinet; Transformer;
Foundation blocks and fixture screws; Coolant system; Automatic lubrication system; Work light;
3-color indication light; Totally enclosed guard; Door interlock; MPG; Rigid tapping; AICC I, Ethernet DNC;
Optional accessories
FANUC 31i; Mitsubishi M730VW; Chain type ATC; Voltage stabilizer; Electric cabinet air conditioner;
Coolant through spindle center; Linear encoder; Column raise; Extra milling head;
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 | GMC3219A | GMC3219B |
|---|---|---|---|
| CNC system | FANUC 0i-MD | ||
| X axis travel | mm | 3200 (126”) | |
| Y axis travel | mm | 1950 (77”) | |
| Z axis travel | mm | 800 (32”) | |
| Worktable dimension (L x W) | mm | 3200x1600 (126x63”) | |
| T slot | mm | 8x22x180 | |
| Distance from worktable to the floor | mm | 950 (37”) | |
| Worktable load | kg | 10000 | |
| Spindle taper | BT50 | BBT50 | |
| Max spindle speed | rpm | 6000 | 10000 |
| Distance from spindle nose to worktable | mm | 180-980 (7.1-38.6”) | |
| Distance between two columns | mm | 1840 (72”) | |
| Spindle motor power | kW | 22 / 26 | |
| Spindle motor torque | Nm | 662 | 140 |
| Rapid feed speed of X, Y axis | mm/min | 20000 | |
| Rapid feed speed of Z axis | mm/min | 15000 | |
| Max cutting feed speed | mm/min | 1-10000 | |
| Motor power of X / Y / Z axis | kW | 7 / 4 / 4 | |
| Tool capacity (option) | 32 | ||
| Max tool weight | kg | 20 | |
| Max tool length | mm | 350 (14”) | |
| Max tool diameter | mm | Φ110 / 225 (4.3 / 8.9”) | |
| Positioning accuracy | mm | 0.025 | |
| Repositioning accuracy | mm | 0.020 | |
| Power supply | kVA | 60 | |
| Machine weight | kg | 29000 | |
| Machine dimension (L x W x H) | mm | 8927x5217x4339 | |
Features of GMC3219 Bridge Type Machining Center
* One-piece cast iron machine bed and bridge yield in high rigidity and precise machining result.
* The frame, stress-relieving designed, provides a stable performance of the machine.
* Preload roller linear guide ways with P grade allow max. loading but with a lower friction coefficient, supplying smooth running thanks to optimized roller recirculation and guidance, saving energy consumption.
* C3 grade double nut ball screws provide precise cutting, even for heavy loads.
* GMC3219A is equipped with a BF gear box of 26kW motor generating 662Nm torque for powerful cutting.
* Two coil chip conveyors and one chain chip conveyor remove the chips effectively.
Standard accessories
FANUC 0i-MD with 8.4’’ screen; Chain chip conveyor; Coil chip conveyor; Spindle chiller;
Water gun and air gun flushing; Machining air blowing device; Heat exchanger for electric cabinet; Transformer;
Foundation blocks and fixture screws; Coolant system; Automatic lubrication system; Work light;
3-color indication light; Totally enclosed guard; Door interlock; MPG; Rigid tapping; AICC I, Ethernet DNC;
Optional accessories
FANUC 31i; Mitsubishi M730VW; Chain type ATC; Voltage stabilizer; Electric cabinet air conditioner;
Coolant through spindle center; Linear encoder; Column raise; Extra milling head;
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 of GMC3219 Bridge Type Machining Center
* One-piece cast iron machine bed and bridge yield in high rigidity and precise machining result.
* The frame, stress-relieving designed, provides a stable performance of the machine.
* Preload roller linear guide ways with P grade allow max. loading but with a lower friction coefficient, supplying smooth running thanks to optimized roller recirculation and guidance, saving energy consumption.
* C3 grade double nut ball screws provide precise cutting, even for heavy loads.
* GMC3219A is equipped with a BF gear box of 26kW motor generating 662Nm torque for powerful cutting.
* Two coil chip conveyors and one chain chip conveyor remove the chips effectively.
* One-piece cast iron machine bed and bridge yield in high rigidity and precise machining result.
* The frame, stress-relieving designed, provides a stable performance of the machine.
* Preload roller linear guide ways with P grade allow max. loading but with a lower friction coefficient, supplying smooth running thanks to optimized roller recirculation and guidance, saving energy consumption.
* C3 grade double nut ball screws provide precise cutting, even for heavy loads.
* GMC3219A is equipped with a BF gear box of 26kW motor generating 662Nm torque for powerful cutting.
* Two coil chip conveyors and one chain chip conveyor remove the chips effectively.
Technical parameters of GMC3219 Bridge Type Machining Center
| Model | Unit | GMC3219A | GMC3219B |
|---|---|---|---|
| CNC system | FANUC 0i-MD | ||
| X axis travel | mm | 3200 (126”) | |
| Y axis travel | mm | 1950 (77”) | |
| Z axis travel | mm | 800 (32”) | |
| Worktable dimension (L x W) | mm | 3200x1600 (126x63”) | |
| T slot | mm | 8x22x180 | |
| Distance from worktable to the floor | mm | 950 (37”) | |
| Worktable load | kg | 10000 | |
| Spindle taper | BT50 | BBT50 | |
| Max spindle speed | rpm | 6000 | 10000 |
| Distance from spindle nose to worktable | mm | 180-980 (7.1-38.6”) | |
| Distance between two columns | mm | 1840 (72”) | |
| Spindle motor power | kW | 22 / 26 | |
| Spindle motor torque | Nm | 662 | 140 |
| Rapid feed speed of X, Y axis | mm/min | 20000 | |
| Rapid feed speed of Z axis | mm/min | 15000 | |
| Max cutting feed speed | mm/min | 1-10000 | |
| Motor power of X / Y / Z axis | kW | 7 / 4 / 4 | |
| Tool capacity (option) | 32 | ||
| Max tool weight | kg | 20 | |
| Max tool length | mm | 350 (14”) | |
| Max tool diameter | mm | Φ110 / 225 (4.3 / 8.9”) | |
| Positioning accuracy | mm | 0.025 | |
| Repositioning accuracy | mm | 0.020 | |
| Power supply | kVA | 60 | |
| Machine weight | kg | 29000 | |
| Machine dimension (L x W x H) | mm | 8927x5217x4339 | |
Standard accessories
FANUC 0i-MD with 8.4’’ screen; Chain chip conveyor; Coil chip conveyor; Spindle chiller;
Water gun and air gun flushing; Machining air blowing device; Heat exchanger for electric cabinet; Transformer;
Foundation blocks and fixture screws; Coolant system; Automatic lubrication system; Work light;
3-color indication light; Totally enclosed guard; Door interlock; MPG; Rigid tapping; AICC I, Ethernet DNC;
FANUC 0i-MD with 8.4’’ screen; Chain chip conveyor; Coil chip conveyor; Spindle chiller;
Water gun and air gun flushing; Machining air blowing device; Heat exchanger for electric cabinet; Transformer;
Foundation blocks and fixture screws; Coolant system; Automatic lubrication system; Work light;
3-color indication light; Totally enclosed guard; Door interlock; MPG; Rigid tapping; AICC I, Ethernet DNC;
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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.