| Model | Unit | GH125 CNC6 |
|---|---|---|
| CNC system | SIEMENS 840D; 6-axis | |
| Max workpiece diameter | mm | Φ125 (4.9”) |
| Max module | mm | 4 |
| Max axial travel | mm | 350 (14”) |
| Min No. of teeth | 4-800 | |
| Max hob diameter and length | mm | Φ90x200 (3.5x7.9”) |
| Spindle taper bore | ISO 30 | |
| Worktable surface diameter | mm | Φ145 (5.7”) |
| Max hob head swivel angle | degree | ±45 |
| Central distance between hob and worktable | mm | 10-160 (0.39-6.3”) |
| Distance between hob axis and worktable surface | mm | 90-440 (3.5-17”) |
| Distance between tailstock center end face and worktable surface | mm | 200-500 (7.9-20”) |
| Max hob tangential travel | mm | 180 (7.1”) |
| Max spindle speed | r/min | 1500 |
| Max worktable speed | r/min | 200 |
| Rapid radial travel | mm/min | 3000 |
| Rapid tangential travel | mm/min | 3000 |
| Rapid axial travel | mm/min | 3000 |
| Linear coordinate resolution of CNC axes | mm | 0.001 |
| Rotary coordinate resolution of CNC axes | degree | 0.001 |
| Total power / main motor power | kVA/kW | 35/9 |
| Packing size | mm | 3200×2240×2760 1800×1580×1740 2050×1420×2300 |
| Net weight | kg | 11000 |
Standard accessories
1. Hob arbor assembly: Φ32mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Cylinder for workpiece clamping;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. FANUC 31i CNC system;
2. Hob arbor assembly: Φ16, 22, 27mm;
3. Auto loading & unloading system;
4. Workpiece fixture;
5. Hob adjusting device;
6. Workpiece positioning mechanism;
Applications
Based on the principle of generating method, with carrying out index and differential compensation motions by electronic gear box, GH125 CNC6 is designed to cut cylindrical spur & helical gears, crowning or slightly tapered gears, spline, worm wheels and sprocket etc suitable for the industries that produce gears in mass production, such as automobile, motorcycle, electrical powered tools, etc.
Features
Based on the principle of generating method, with carrying out index and differential compensation motions by electronic gear box, GH125 CNC6 is designed to cut cylindrical spur & helical gears, crowning or slightly tapered gears, spline, worm wheels and sprocket etc suitable for the industries that produce gears in mass production, such as automobile, motorcycle, electrical powered tools, etc.
1. Hob arbor assembly: Φ32mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Cylinder for workpiece clamping;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. FANUC 31i CNC system;
2. Hob arbor assembly: Φ16, 22, 27mm;
3. Auto loading & unloading system;
4. Workpiece fixture;
5. Hob adjusting device;
6. Workpiece positioning mechanism;
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.
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