Model | Unit | BG200 | |
Type | C3 | ||
CNC system | SIEMENS 828D | ||
Work to be cut | |||
Max. module | mm | 4 | |
Max. pitch cone distance | mm | 103 (4.1”) (spiral angle 35°) | |
Max. pitch diameter | mm | Φ200 (7.9”) (spiral angle 35°, ratio 10:1) | |
Root angle | Max. | 90° | |
Min. | 4° | ||
Max. ratio | 10:1 | ||
Max. face width | mm | 30 (1.2”) | |
Max. cutting depth | mm | 8 (3.2”) | |
Number of teeth | 5-100 | ||
Work spindle | |||
Diameter of taper hole at large end | mm | Φ44.399 (1.8”) | |
Taper | MT-5 | ||
Length of taper | mm | 110 (4.3”) | |
Diameter of through hole | mm | 20 (0.79”) | |
Screw diameter at front part of spindle | M72×2 | ||
Cutter diameter | 11/10″, 11/2″, 2″, 31/2″, 6″ with a cutter adaptor | ||
Work head settings | |||
Max. offset of spindle | mm | Up 30, Down 20 | |
Distance from face of spindle to machine center | mm | 30-190 (1.2-7.5”) | |
Cutter speed (stepless) | rpm | 100-500 | |
Power of main motor | kW | 3 | |
Cradle settings | |||
Setting angle | 0°-360° | ||
Radial | mm | 0-80 (0-3.2”) | |
Sliding base | |||
Max. movement from machine center | mm | -15~100 (-0.59-3.9”) | |
Total power of machine | kVA | 12 | |
Overall dimensions of machine | mm | 2676×2534×1800 | |
Net weight | kg | 2800 |
Model | Unit | BG200 | |
Type | C3 | ||
CNC system | SIEMENS 828D | ||
Work to be cut | |||
Max. module | mm | 4 | |
Max. pitch cone distance | mm | 103 (4.1”) (spiral angle 35°) | |
Max. pitch diameter | mm | Φ200 (7.9”) (spiral angle 35°, ratio 10:1) | |
Root angle | Max. | 90° | |
Min. | 4° | ||
Max. ratio | 10:1 | ||
Max. face width | mm | 30 (1.2”) | |
Max. cutting depth | mm | 8 (3.2”) | |
Number of teeth | 5-100 | ||
Work spindle | |||
Diameter of taper hole at large end | mm | Φ44.399 (1.8”) | |
Taper | MT-5 | ||
Length of taper | mm | 110 (4.3”) | |
Diameter of through hole | mm | 20 (0.79”) | |
Screw diameter at front part of spindle | M72×2 | ||
Cutter diameter | 11/10″, 11/2″, 2″, 31/2″, 6″ with a cutter adaptor | ||
Work head settings | |||
Max. offset of spindle | mm | Up 30, Down 20 | |
Distance from face of spindle to machine center | mm | 30-190 (1.2-7.5”) | |
Cutter speed (stepless) | rpm | 100-500 | |
Power of main motor | kW | 3 | |
Cradle settings | |||
Setting angle | 0°-360° | ||
Radial | mm | 0-80 (0-3.2”) | |
Sliding base | |||
Max. movement from machine center | mm | -15~100 (-0.59-3.9”) | |
Total power of machine | kVA | 12 | |
Overall dimensions of machine | mm | 2676×2534×1800 | |
Net weight | kg | 2800 |
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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