| Items | NCL320FR |
| Capacity | |
| Max swing over bed | Ø320mm |
| Max swing over cross slide | Ø110mm |
| Max turning DIA. (for plate) | 320mm |
| Bar capacity through spindle hole | Ø35 mm |
| Spindle | |
| Spindle nose | A2-5 |
| Spindle bore | Φ43mm |
| Max. spindle speed | 4000r/min |
| Spindle motor power | 3.7 kW |
| Chuck size | 6 inch hydraulic hollow chuck |
| Travel and rapid traverse | |
| X axis travel | 300mm |
| Z axis travel / max turning length | 280mm |
| X axis rapid traverse speed | 18m/min |
| Z axis rapid traverse speed | 18m/min |
| Gang type tool post | |
| Number of tools | 4 pcs |
| Tool cross section | 20x20mm |
| Boring tool size | Φ20mm |
| Accuracy | |
| Repeatability accuracy | X axis:0.004mm, Z axis:0.005mm |
| Others | |
| Overall dimensions (L×W×H) | 1670X1450X1620mm |
| Net weight | 1850kg |
| No. | Item | Model | Note |
| 1 | Controller system | GSK988TA | GSK |
| 2 | AC servo motor | X:6N.m | GSK |
| Z:6N.m | GSK | ||
| 3 | Servo spindle motor | 3.7kW | GSK |
| 4 | Spindle bearings | 7015AC/P5 7013AC/P5 |
China |
| 5 | Ball screw | X:Φ25x8-C3 | Taiwan,HIWIN |
| Z:Φ32x8-C3 | |||
| 6 | Ball screw bearings | X: 760304 DT Z :25TAC62B |
China |
| 7 | Linear guide way | X/Z:25/30 | Japan,THK |
| 8 | Hydraulic hollow chuck | X3-06 | China |
| 9 | Hydraulic hollow cylinder | XH-536T | China |
| 10 | Auto lubrication pump | XC1.5 | China |
| 11 | Coolant pump | LDPB2-15-TP 210W | China |
| 12 | Foot pedal | China | |
| 13 | Documents with machine | China |
| No. | Item | Model | Note |
| 1 | Controller system | GSK988TA | GSK |
| 2 | AC servo motor | X:6N.m | GSK |
| Z:6N.m | GSK | ||
| 3 | Servo spindle motor | 3.7kW | GSK |
| 4 | Spindle bearings | 7015AC/P5 7013AC/P5 |
China |
| 5 | Ball screw | X:Φ25x8-C3 | Taiwan,HIWIN |
| Z:Φ32x8-C3 | |||
| 6 | Ball screw bearings | X: 760304 DT Z :25TAC62B |
China |
| 7 | Linear guide way | X/Z:25/30 | Japan,THK |
| 8 | Hydraulic hollow chuck | X3-06 | China |
| 9 | Hydraulic hollow cylinder | XH-536T | China |
| 10 | Auto lubrication pump | XC1.5 | China |
| 11 | Coolant pump | LDPB2-15-TP 210W | China |
| 12 | Foot pedal | China | |
| 13 | Documents with machine | China |
| Items | NCL320FR |
| Capacity | |
| Max swing over bed | Ø320mm |
| Max swing over cross slide | Ø110mm |
| Max turning DIA. (for plate) | 320mm |
| Bar capacity through spindle hole | Ø35 mm |
| Spindle | |
| Spindle nose | A2-5 |
| Spindle bore | Φ43mm |
| Max. spindle speed | 4000r/min |
| Spindle motor power | 3.7 kW |
| Chuck size | 6 inch hydraulic hollow chuck |
| Travel and rapid traverse | |
| X axis travel | 300mm |
| Z axis travel / max turning length | 280mm |
| X axis rapid traverse speed | 18m/min |
| Z axis rapid traverse speed | 18m/min |
| Gang type tool post | |
| Number of tools | 4 pcs |
| Tool cross section | 20x20mm |
| Boring tool size | Φ20mm |
| Accuracy | |
| Repeatability accuracy | X axis:0.004mm, Z axis:0.005mm |
| Others | |
| Overall dimensions (L×W×H) | 1670X1450X1620mm |
| Net weight | 1850kg |
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.
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.