Model | Unit | VMC850 |
---|---|---|
Type | W500BT40 | |
CNC system | SIEMENS 808D | |
Worktable size (L×W) | mm | 1000x500 (39x20”) |
T slot (Width x No. x pitch) | mm | 18x5x100 |
Max. load of table | kg | 500 |
Worktable travel (X / Y / Z) | mm | 850 / 500 / 500 (33 / 20 / 20”) |
Distance from spindle nose to worktable surface | mm | 150-650 (5.9-26”) |
Distance from spindle center to column surface | mm | 560 (22”) |
Spindle taper | BT40 | |
Spindle speed | rpm | 40-6000/8000 |
Max. spindle torque | NM | 26.3 |
Cutting feed of X/Y/Z axis | mm/min | 2.5-10000 |
Rapid feed of X/Y/Z axis | mm/min | 30000 |
Tool magazine | 16; Bamboo hat type | |
Max. tool diameter | mm | 130 (5.1”) |
Max. tool weight | kg | 8 |
Tool changing time | s | 3 |
Positioning accuracy | mm | ±0.015 |
Repositioning accuracy | mm | ±0.0075 |
Main motor power | kW | 7.5 |
Feed motor power of X/Y/Z axis | kW | 1.8 |
Net weight | kg | 4650 |
Gross weight | kg | 4800 |
Overall size (L×W×H) | mm | 2450x2200x2300 |
Packing size (L×W×H) | mm | 2710x2280x2550 |
Model | Unit | VMC850 |
---|---|---|
Type | W500BT40 | |
CNC system | SIEMENS 808D | |
Worktable size (L×W) | mm | 1000x500 (39x20”) |
T slot (Width x No. x pitch) | mm | 18x5x100 |
Max. load of table | kg | 500 |
Worktable travel (X / Y / Z) | mm | 850 / 500 / 500 (33 / 20 / 20”) |
Distance from spindle nose to worktable surface | mm | 150-650 (5.9-26”) |
Distance from spindle center to column surface | mm | 560 (22”) |
Spindle taper | BT40 | |
Spindle speed | rpm | 40-6000/8000 |
Max. spindle torque | NM | 26.3 |
Cutting feed of X/Y/Z axis | mm/min | 2.5-10000 |
Rapid feed of X/Y/Z axis | mm/min | 30000 |
Tool magazine | 16; Bamboo hat type | |
Max. tool diameter | mm | 130 (5.1”) |
Max. tool weight | kg | 8 |
Tool changing time | s | 3 |
Positioning accuracy | mm | ±0.015 |
Repositioning accuracy | mm | ±0.0075 |
Main motor power | kW | 7.5 |
Feed motor power of X/Y/Z axis | kW | 1.8 |
Net weight | kg | 4650 |
Gross weight | kg | 4800 |
Overall size (L×W×H) | mm | 2450x2200x2300 |
Packing size (L×W×H) | mm | 2710x2280x2550 |
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.
Keywords: Knee Type Milling Machine, Vertical Milling Machine, Horizontal Mill, Turret Mill, Knee-and-Column Mill, Milling Machine for Sale, Industrial Milling, Metalworking Equipment, Workshop Machinery, CNC Mill, Toolroom Mill, Precision Machining, Fortune Pacific, Machine Tool Manufacturer.