Model | Unit | GSM320 | |
---|---|---|---|
Type | C3 | ||
Simultaneous control | SIEMENS 828D, 3-axis | ||
Maximum diameter of workpiece | External gear | mm | 320 |
Internal gear | 220 + cutter diameter | ||
Maximum module of workpiece | mm | 8 | |
Maximum face width | mm | 90 | |
Maximum stroke of cutter spindle | mm | 110 | |
Number of strokes for cutter spindle | min-1 | 0~800 | |
Diameter of cutter spindle | mm | 90 | |
Diameter of cutter spindle journal | mm | 31.743 | |
Travel position adjustment of cutter spindle | mm | 20 | |
Distance between bearing surface of cutter and worktable surface | mm | 152~282 | |
Distance between cutter spindle axis and worktable spindle axis | mm | -115~290 | |
Cutter relieving amount | mm | ≥0.5 | |
Angular cutter relieving amount | mm | ± 20 | |
Diameter of worktable | mm | Φ340 | |
Diameter of worktable hole | mm | Φ120 | |
Number of T-slot | 6 | ||
Radial feed of column | mm/stroke | 0.01~0.25 | |
Rotary feed of cutter | mm/stroke | 0.01~2.5 | |
Rapid radial feed of column | m/min | 1.5 | |
Power of main motor | kW | 7.5 | |
Total capacity | kVA | 25 | |
Machine weight | kg | 11000 | |
Overall dimensions (L x W x H) | mm | 2730×1635×2300 |
Model | Unit | GSM320 | |
---|---|---|---|
Type | C3 | ||
Simultaneous control | SIEMENS 828D, 3-axis | ||
Maximum diameter of workpiece | External gear | mm | 320 |
Internal gear | 220 + cutter diameter | ||
Maximum module of workpiece | mm | 8 | |
Maximum face width | mm | 90 | |
Maximum stroke of cutter spindle | mm | 110 | |
Number of strokes for cutter spindle | min-1 | 0~800 | |
Diameter of cutter spindle | mm | 90 | |
Diameter of cutter spindle journal | mm | 31.743 | |
Travel position adjustment of cutter spindle | mm | 20 | |
Distance between bearing surface of cutter and worktable surface | mm | 152~282 | |
Distance between cutter spindle axis and worktable spindle axis | mm | -115~290 | |
Cutter relieving amount | mm | ≥0.5 | |
Angular cutter relieving amount | mm | ± 20 | |
Diameter of worktable | mm | Φ340 | |
Diameter of worktable hole | mm | Φ120 | |
Number of T-slot | 6 | ||
Radial feed of column | mm/stroke | 0.01~0.25 | |
Rotary feed of cutter | mm/stroke | 0.01~2.5 | |
Rapid radial feed of column | m/min | 1.5 | |
Power of main motor | kW | 7.5 | |
Total capacity | kVA | 25 | |
Machine weight | kg | 11000 | |
Overall dimensions (L x W x H) | mm | 2730×1635×2300 |
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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