Model | Unit | GH800 CNC6 |
---|---|---|
CNC system | SIEMENS 840D; 6-axis | |
Max workpiece diameter | mm | Φ800 (32”) |
Max module | mm | 16 |
Max axial travel | mm | 600 (24”) |
No. of teeth | 6-600 | |
Max hob diameter and length | mm | Φ220x260 (8.7x10”) |
Spindle taper bore | ISO 50 | |
Worktable surface diameter | mm | Φ750 (30”) |
Max hob head swivel angle | degree | ±45 |
Central distance between hob and worktable | mm | 75-560 (3-22”) |
Distance between hob axis and worktable surface | mm | 200-800 (7.9-32”) |
Distance between center end face and worktable surface | mm | 500-1100 (20-43”) |
Hob tangential travel | mm | 220 (8.7”) |
Max spindle speed | r/min | 275 |
Max worktable speed | r/min | 24 |
Radial / tangential / axial rapid travel | mm/min | 1500 |
Total power / main motor power | kVA/kW | 67/30 |
Net weight | kg | 27000 |
Model | Unit | GH800 CNC6 |
---|---|---|
CNC system | SIEMENS 840D; 6-axis | |
Max workpiece diameter | mm | Φ800 (32”) |
Max module | mm | 16 |
Max axial travel | mm | 600 (24”) |
No. of teeth | 6-600 | |
Max hob diameter and length | mm | Φ220x260 (8.7x10”) |
Spindle taper bore | ISO 50 | |
Worktable surface diameter | mm | Φ750 (30”) |
Max hob head swivel angle | degree | ±45 |
Central distance between hob and worktable | mm | 75-560 (3-22”) |
Distance between hob axis and worktable surface | mm | 200-800 (7.9-32”) |
Distance between center end face and worktable surface | mm | 500-1100 (20-43”) |
Hob tangential travel | mm | 220 (8.7”) |
Max spindle speed | r/min | 275 |
Max worktable speed | r/min | 24 |
Radial / tangential / axial rapid travel | mm/min | 1500 |
Total power / main motor power | kVA/kW | 67/30 |
Net weight | kg | 27000 |
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.
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.
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.
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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