| Model | Unit | GH200 | |
|---|---|---|---|
| Type | CNC2 | CNC3 | |
| CNC system | FANUC 0i Mate; 2-axis | FANUC 0i Mate; 3-axis | |
| Max workpiece diameter | mm | Φ200 (7.9”) | |
| Max module | mm | 6 | |
| Max programming unit | mm | 0.001 | |
| Max worktable speed | r/min | 32 | |
| Spindle speed/step | r/min | 100-488/8 | |
| Radial feed speed | mm/r | 0.4-4 | |
| Axial feed speed | mm/r | 0.6-5 | |
| Distance between hob axis and worktable surface | mm | 260-430 (10-17”) | |
| Central distance between hob and worktable | mm | 30-175 (1.2-6.9”) | |
| Distance between tailstock center and worktable surface | mm | 310-510 (12-20”) | |
| Cutter axial travel | mm | 95 (3.7”) | |
| Max hob swivel angle | degree | ±45 | |
| Max hob diameter and length | mm | Φ140x140 (5.5x5.5”) | |
| Worktable diameter x bore diameter | mm | Φ320x65 (13x2.6”) | |
| Worktable T-slot | 3x18 | ||
| Total power / main motor power | kVA/kW | 13.44/7.5 | |
| Machine dimension (L x W x H) | mm | 2310x2000x1900 | |
| Packing size (L x W x H) | mm | 2730×2110×2450 | |
| Net weight / gross weight | kg | 3800/4500 | |
Features
1. GH200 CNC2 is a 2-axis gear hobbing machine. CNC axes are: X-axis--radial feed motion; Z-axis--axial feed motion. Axial shifting travel for the hob can be driven by the general motor.
2. GH200 CNC3 is a 3-axis gear hobbing machine. Besides axes X and Z, it has another CNC axis (tangential feed).
3. Vertical design, the worktable moves to carry out radial feed motion. Guideway have automatic lubrication. CNC axes are driven through preloaded ball screws.
4. Automatic hob shifting function. Except top left-front side located electrical cabinet is equipped with air conditioner; beautiful outward appearance and less floor area.
Standard accessories
1. Hob arbor assembly: Φ27, 32mm;
2. Change gears;
3. Tools for installation and set up;
Optional accessories
1. SIEMENS 828D;
2. Hob arbor assembly: Φ13, 22, 40, 50mm;
3. Workpiece fixture;
4. Deburring device;
1. GH200 CNC2 is a 2-axis gear hobbing machine. CNC axes are: X-axis--radial feed motion; Z-axis--axial feed motion. Axial shifting travel for the hob can be driven by the general motor.
2. GH200 CNC3 is a 3-axis gear hobbing machine. Besides axes X and Z, it has another CNC axis (tangential feed).
3. Vertical design, the worktable moves to carry out radial feed motion. Guideway have automatic lubrication. CNC axes are driven through preloaded ball screws.
4. Automatic hob shifting function. Except top left-front side located electrical cabinet is equipped with air conditioner; beautiful outward appearance and less floor area.
1. Hob arbor assembly: Φ27, 32mm;
2. Change gears;
3. Tools for installation and set up;
Optional accessories
1. SIEMENS 828D;
2. Hob arbor assembly: Φ13, 22, 40, 50mm;
3. Workpiece fixture;
4. Deburring device;
| Model | Unit | GH200 | |
|---|---|---|---|
| Type | CNC2 | CNC3 | |
| CNC system | FANUC 0i Mate; 2-axis | FANUC 0i Mate; 3-axis | |
| Max workpiece diameter | mm | Φ200 (7.9”) | |
| Max module | mm | 6 | |
| Max programming unit | mm | 0.001 | |
| Max worktable speed | r/min | 32 | |
| Spindle speed/step | r/min | 100-488/8 | |
| Radial feed speed | mm/r | 0.4-4 | |
| Axial feed speed | mm/r | 0.6-5 | |
| Distance between hob axis and worktable surface | mm | 260-430 (10-17”) | |
| Central distance between hob and worktable | mm | 30-175 (1.2-6.9”) | |
| Distance between tailstock center and worktable surface | mm | 310-510 (12-20”) | |
| Cutter axial travel | mm | 95 (3.7”) | |
| Max hob swivel angle | degree | ±45 | |
| Max hob diameter and length | mm | Φ140x140 (5.5x5.5”) | |
| Worktable diameter x bore diameter | mm | Φ320x65 (13x2.6”) | |
| Worktable T-slot | 3x18 | ||
| Total power / main motor power | kVA/kW | 13.44/7.5 | |
| Machine dimension (L x W x H) | mm | 2310x2000x1900 | |
| Packing size (L x W x H) | mm | 2730×2110×2450 | |
| Net weight / gross weight | kg | 3800/4500 | |
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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