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GMC3550 CNC Gantry type Machining Center
GMC3550 CNC Gantry type Machining Center width of table 3500mm, Length of table 5000mm, Max. Load of table 35000kg; Max. Travel of X=5200mm, Max. Travel of Y=4600mm, Max. Travel of Z=1500mm; Table movement;
- GMC3550 CNC Gantry type Machining CenterDownload
Machine specifications
Equipments
Optionals
| Item | Unit | Spec. | Mark | |
| Machining range | Width of table | mm | 3500 | |
| Length of table | mm | 5000 | ||
| Max. Load of table | kg | 35000 | ||
| Effective width of gantry | mm | 4200 | ||
| Max. Height of the gantry | mm | 1750 | ||
| Distance between vertical spindle to table surface | mm | 250~1750 | ||
| Table travel | Max. Travel of X | mm | 5200 | |
| Max. Travel of Y | mm | 4600 | ||
| Max. Travel of Z | mm | 1500 | ||
| Spindle |
Item | BT50-210 | ||
| Motor power | kW | 31/36 | ||
| Highest speed | rpm | 3000 | ||
| Rated torque | N.m | 1028 | ||
| Max. torque | N.m | 1208 | ||
| Max. broach | N | 18000 | ||
| Table (X) | Structure type | Table movement | ||
| Guideway type | Heavy linear guide rail pair | RGW65 | ||
| Quantity of rail pair | set | 4 | ||
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:7 | |||
| Drive unit | Ball screw pair | R100-25K5-FDC | ||
| Saddle (Y) | Structure type | Saddle movement | ||
| Guideway type | Heavy linear guide rail pair | RGW55 | ||
| Quantity of rail pair | set | 3 | ||
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:4 | |||
| Drive unit | Ball screw pair | R63-16K5-FDC | ||
| Ram (Z) | Structure type | ram movement | ||
| Guideway type | Square type with hard way | |||
| Quantity of rail pair | set | Eight side | 500x500 | |
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:4 | |||
| Drive unit | Ball screw pair | R63-12K5-FDC | ||
| Rapid feed speed | X | mm/min | 8000 | |
| Y | mm/min | 8000 | ||
| Z | mm/min | 8000 | ||
| Cutting feed speed range | X, Y | mm/min | 1-4000 | |
| Z | mm/min | 1-4000 | ||
| Positioning accuracy of linear axis (GB/T19362.1-2003) | X | mm | 0.032 | Half closed-loop control |
| Y | mm | 0.030 | ||
| Z | mm | 0.022 | ||
| Repeat Positioning accuracy of linear axis (GB/T19362.1-2003) |
X | mm | 0.022 | Half closed-loop control |
| Y | mm | 0.020 | ||
| Z | mm | 0.015 | ||
| Working accuracy | Fine boring surface roughness | ≤Ra1.6 | HB230~260 Steel parts | |
| Fine milling surface roughness | ≤Ra3.2 | |||
| Working Environment | Temperature | 0˚C-40˚C | ||
| Vlotage | V | 380(-15%,+10%) | ||
| Power frequency | Hz | 50±1% | ||
| Relative humidity | ≤90% | |||
| Compressed air pressure | MPa | 0.5~0.7 | ||
| CNC system | Model | Siemens | ||
| The total number of control axis | Axes | 3 | ||
| Linkage control axis number | Axes | 3(Linear axis) | ||
| Tool change system | Taper | BT50 | ||
| Tool magazine | Chain type / 32pieces | |||
| Max. Weight of tool | kg | 25 | ||
| Full tool diameter | mm | 125 | ||
| Max. Length of tool | mm | 350 | ||
| Auxiliary function | Lubrication type of guideway pair/ball screw pair | automatic centralized lubrication | ||
| Operation panel | suspension type | |||
| Operation type of manual tool change | Control by button | |||
| Status indication | Three-colour warning lamp | |||
| Cooling type of tool/workpiece | Liquid external cooling | |||
| Overall Dimension | Length | mm | 13120 | |
| Width | mm | 7200 | ||
| Height | mm | 7250 | ||
| Machine weight (about) | kg | 95000 | ||
Equipments
| Item 01 | Descriptions | |
| 01.01 | Siemens 828D system | |
| 01.02 |
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| 01.03 | X axis Taiwan three linear guide ways (65mm), Y axis linear and box guide way combination | |
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| 01.16 |
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| Item 02 | Descriptions | |
| 02.01 |
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| 02.02 | Automatic measuring system pieces (work pieces) Renishaw OMP60 | |
| 02.03 | China made Mingyuan Brand auto universal milling head 5 Index with head magazine | |
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| 02.05 |
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| 02.06 |
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Optionals
| Item 02 | Descriptions | |
| 02.01 |
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| 02.02 | Automatic measuring system pieces (work pieces) Renishaw OMP60 | |
| 02.03 | China made Mingyuan Brand auto universal milling head 5 Index with head magazine | |
| 02.04 |
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| 02.05 |
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| 02.06 |
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| 02.07 |
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Equipments
| Item 01 | Descriptions | |
| 01.01 | Siemens 828D system | |
| 01.02 |
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| 01.03 | X axis Taiwan three linear guide ways (65mm), Y axis linear and box guide way combination | |
| 01.04 |
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| 01.05 |
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| 01.06 |
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| 01.07 |
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| 01.08 |
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| 01.09 |
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| 01.10 |
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| 01.11 |
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| 01.12 |
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| 01.13 |
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| 01.14 |
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| 01.15 |
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| 01.16 |
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Machine specifications
| Item | Unit | Spec. | Mark | |
| Machining range | Width of table | mm | 3500 | |
| Length of table | mm | 5000 | ||
| Max. Load of table | kg | 35000 | ||
| Effective width of gantry | mm | 4200 | ||
| Max. Height of the gantry | mm | 1750 | ||
| Distance between vertical spindle to table surface | mm | 250~1750 | ||
| Table travel | Max. Travel of X | mm | 5200 | |
| Max. Travel of Y | mm | 4600 | ||
| Max. Travel of Z | mm | 1500 | ||
| Spindle |
Item | BT50-210 | ||
| Motor power | kW | 31/36 | ||
| Highest speed | rpm | 3000 | ||
| Rated torque | N.m | 1028 | ||
| Max. torque | N.m | 1208 | ||
| Max. broach | N | 18000 | ||
| Table (X) | Structure type | Table movement | ||
| Guideway type | Heavy linear guide rail pair | RGW65 | ||
| Quantity of rail pair | set | 4 | ||
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:7 | |||
| Drive unit | Ball screw pair | R100-25K5-FDC | ||
| Saddle (Y) | Structure type | Saddle movement | ||
| Guideway type | Heavy linear guide rail pair | RGW55 | ||
| Quantity of rail pair | set | 3 | ||
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:4 | |||
| Drive unit | Ball screw pair | R63-16K5-FDC | ||
| Ram (Z) | Structure type | ram movement | ||
| Guideway type | Square type with hard way | |||
| Quantity of rail pair | set | Eight side | 500x500 | |
| Transmission form | Planetary reducer | |||
| Reduction ratio | 1:4 | |||
| Drive unit | Ball screw pair | R63-12K5-FDC | ||
| Rapid feed speed | X | mm/min | 8000 | |
| Y | mm/min | 8000 | ||
| Z | mm/min | 8000 | ||
| Cutting feed speed range | X, Y | mm/min | 1-4000 | |
| Z | mm/min | 1-4000 | ||
| Positioning accuracy of linear axis (GB/T19362.1-2003) | X | mm | 0.032 | Half closed-loop control |
| Y | mm | 0.030 | ||
| Z | mm | 0.022 | ||
| Repeat Positioning accuracy of linear axis (GB/T19362.1-2003) |
X | mm | 0.022 | Half closed-loop control |
| Y | mm | 0.020 | ||
| Z | mm | 0.015 | ||
| Working accuracy | Fine boring surface roughness | ≤Ra1.6 | HB230~260 Steel parts | |
| Fine milling surface roughness | ≤Ra3.2 | |||
| Working Environment | Temperature | 0˚C-40˚C | ||
| Vlotage | V | 380(-15%,+10%) | ||
| Power frequency | Hz | 50±1% | ||
| Relative humidity | ≤90% | |||
| Compressed air pressure | MPa | 0.5~0.7 | ||
| CNC system | Model | Siemens | ||
| The total number of control axis | Axes | 3 | ||
| Linkage control axis number | Axes | 3(Linear axis) | ||
| Tool change system | Taper | BT50 | ||
| Tool magazine | Chain type / 32pieces | |||
| Max. Weight of tool | kg | 25 | ||
| Full tool diameter | mm | 125 | ||
| Max. Length of tool | mm | 350 | ||
| Auxiliary function | Lubrication type of guideway pair/ball screw pair | automatic centralized lubrication | ||
| Operation panel | suspension type | |||
| Operation type of manual tool change | Control by button | |||
| Status indication | Three-colour warning lamp | |||
| Cooling type of tool/workpiece | Liquid external cooling | |||
| Overall Dimension | Length | mm | 13120 | |
| Width | mm | 7200 | ||
| Height | mm | 7250 | ||
| Machine weight (about) | kg | 95000 | ||
Products
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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.