| ITEMS | UNIT | NCH500F | |
| Capacity | Swing over bed | mm | Φ500 |
| Swing over cross slide | mm | Φ280 | |
| Max. length of workpiece | mm | 1000 | |
| Spindle through-hole | mm | Φ72 | |
| Bed width | mm | 380 | |
| Spindle | Spindle speed range | rpm | 30-2500 |
| Main motor power | kW | 7.5 | |
| Spindle bore | mm | Φ92 | |
| Spindle nose | - | A2-8 | |
| Chuck size | inch | 10” | |
| Tools | Tool type | - | Electrical tool post |
| No. of tool stations | - | 4 | |
| Tool shank dimension | mm | 25x25 | |
| Boring tool size | mm | Φ32 | |
| Carriage | X axis travel | mm | 270 |
| Z axis travel | mm | 1000 | |
| X axis rapid traverse speed | mm/min | 6000 | |
| Z axis rapid traverse speed | mm/min | 8000 | |
| Guidway type | Box way | ||
| Tailstock | Tailstock quill diameter | mm | Φ75 |
| Tailstock quill taper | - | MT5 | |
| Tailstock quill travel | mm | 150 | |
| Accuracy | Positioning accuracy of X/Z axis | mm | 0.012/0.016 |
| Repositioning accuracy of X/Z axis | mm | 0.006/0.008 | |
| Dimensions | L x W x H (of lathe) | mm | 2840x2040x1790 |
| Weight | Net weight | kg | 3500 |
2. 4-position electric tool post;
3. 3-jaw 10” hydraulic hollow chuck;
4. Manual pulse generator;
5. Coolant system;
6. Lubrication system;
7. 3-color warning light;
8. Hydraulic tailstock；
9. Full safety guard;
Descriptions
Swing over bed Φ500mm, Swing over cross slide Φ280mm, Max. length of workpiece 1000mm, Spindle through-hole Φ72mm, Bed width 380mm.
| ITEMS | UNIT | NCH500F | |
| Capacity | Swing over bed | mm | Φ500 |
| Swing over cross slide | mm | Φ280 | |
| Max. length of workpiece | mm | 1000 | |
| Spindle through-hole | mm | Φ72 | |
| Bed width | mm | 380 | |
| Spindle | Spindle speed range | rpm | 30-2500 |
| Main motor power | kW | 7.5 | |
| Spindle bore | mm | Φ92 | |
| Spindle nose | - | A2-8 | |
| Chuck size | inch | 10” | |
| Tools | Tool type | - | Electrical tool post |
| No. of tool stations | - | 4 | |
| Tool shank dimension | mm | 25x25 | |
| Boring tool size | mm | Φ32 | |
| Carriage | X axis travel | mm | 270 |
| Z axis travel | mm | 1000 | |
| X axis rapid traverse speed | mm/min | 6000 | |
| Z axis rapid traverse speed | mm/min | 8000 | |
| Guidway type | Box way | ||
| Tailstock | Tailstock quill diameter | mm | Φ75 |
| Tailstock quill taper | - | MT5 | |
| Tailstock quill travel | mm | 150 | |
| Accuracy | Positioning accuracy of X/Z axis | mm | 0.012/0.016 |
| Repositioning accuracy of X/Z axis | mm | 0.006/0.008 | |
| Dimensions | L x W x H (of lathe) | mm | 2840x2040x1790 |
| Weight | Net weight | kg | 3500 |
2. 4-position electric tool post;
3. 3-jaw 10” hydraulic hollow chuck;
4. Manual pulse generator;
5. Coolant system;
6. Lubrication system;
7. 3-color warning light;
8. Hydraulic tailstock；
9. Full safety guard;
Swing over bed Φ500mm, Swing over cross slide Φ280mm, Max. length of workpiece 1000mm, Spindle through-hole Φ72mm, Bed width 380mm.
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.