| Model | NC400 | NC460 | NC500 |
| Type | B336 | B336 | B336 |
| CNC System | FANUC 0i -TF | ||
| Max. Swing over bed | Φ400mm (16'') | Φ460mm (18'') | Φ500mm (20'') |
| Max. Swing over carriage | Φ210mm (8.3'') / Φ165mm (6.5'', Gang tools) |
Φ240mm (9.5'') / Φ205mm (8'', Gang tools) |
Φ280mm (11'') / Φ245mm (9.6'', Gang tools) |
| Maximum turned Length | 750/1000/1500mm (30''/40''/59'') | ||
| Max. turning Length | 490/740/1240mm (19''x29''x49'') | ||
| Bed width | 336mm (13.2’’) | ||
| Max. weight only in chuck | 250kg | ||
| Max. weight between chuck and tailstock | 500kg | ||
| Max. weight between chuck and tailstock with one steady support | 750kg | ||
| Spindle nose | D8 | ||
| Spindle bore | Φ80mm (3.15'') | ||
| Cone hole diameter & taper of spindle hole | MT-7 | ||
| Range of spindle speeds | 100-2000r/min; variable | ||
| Rapid feed for Axis Z | 10m/min | ||
| Rapid feed for Axis X | 8m/min | ||
| Max. travel of Axis Z | 710/960/1460mm (28''x38''x57'') | ||
| Max. travel of Axis X | 250mm(10'') / 320mm (12.6’’, Gang tools) |
280mm(11'') / 320mm (12.6’’, Gang tools) |
280mm(11'') / 320mm (12.6’’, Gang tools) |
| Min input | 0.001mm (0.00004'') | ||
| Tool cross section | 25x25mm (1'' x 1'') | ||
| External diameter | Φ75mm (3'') | ||
| Taper of bore | MT-4 | MT-5 | MT-5 |
| Max. Traverse | 130mm (5'') | ||
| X/Z motor torque | 4.7/7Nm | ||
| Power of main motor | 5.5kW (Optional 7.5kW) | ||
| Coolant pump motor power | 75W | ||
| Overall dimensions (L×W×H) | 2060/2310/2790×1180×1500mm (81''/91''/110''x46''x59'') | ||
| Net weight | 2100/2250/2800 kg | 2200/2350/2900kg | 2200/2350/2900kg |
Features of NC400 NC460 NC500 B336 Turning CNC Lathe
1. Longitudinal and cross feeds are effected by ball leadscrews, driven by servo motors;
2. Either 4 station or 6 station tool post or gang tools can be selected;
3. The tool post is located on precision contrate gears with a high repeated positioning accuracy;
4. Hydraulic chuck, manual chuck, manual tailstock and hydraulic tailstock are available for your choice;
5. The surface of the bedways is supersonic frequency hardened and precision ground with a long service life;
6. The lathe spindle system is high in the rigidity and accuracy;
Standard equipments
1. 4-station automatic tool post;
2. 3-Jaw chuck;
3. Coolant pump;
4. Lubrication system;
5. Semi-sealed guard;
6. Dead center;
Optional equipments
1. Hydraulic tailstock;
2. Solid or hollow hydraulic chuck;
3. Steady rest;
4. 6 or 8 stations automatic tool post;
1. Longitudinal and cross feeds are effected by ball leadscrews, driven by servo motors;
2. Either 4 station or 6 station tool post or gang tools can be selected;
3. The tool post is located on precision contrate gears with a high repeated positioning accuracy;
4. Hydraulic chuck, manual chuck, manual tailstock and hydraulic tailstock are available for your choice;
5. The surface of the bedways is supersonic frequency hardened and precision ground with a long service life;
6. The lathe spindle system is high in the rigidity and accuracy;
| Model | NC400 | NC460 | NC500 |
| Type | B336 | B336 | B336 |
| CNC System | FANUC 0i -TF | ||
| Max. Swing over bed | Φ400mm (16'') | Φ460mm (18'') | Φ500mm (20'') |
| Max. Swing over carriage | Φ210mm (8.3'') / Φ165mm (6.5'', Gang tools) |
Φ240mm (9.5'') / Φ205mm (8'', Gang tools) |
Φ280mm (11'') / Φ245mm (9.6'', Gang tools) |
| Maximum turned Length | 750/1000/1500mm (30''/40''/59'') | ||
| Max. turning Length | 490/740/1240mm (19''x29''x49'') | ||
| Bed width | 336mm (13.2’’) | ||
| Max. weight only in chuck | 250kg | ||
| Max. weight between chuck and tailstock | 500kg | ||
| Max. weight between chuck and tailstock with one steady support | 750kg | ||
| Spindle nose | D8 | ||
| Spindle bore | Φ80mm (3.15'') | ||
| Cone hole diameter & taper of spindle hole | MT-7 | ||
| Range of spindle speeds | 100-2000r/min; variable | ||
| Rapid feed for Axis Z | 10m/min | ||
| Rapid feed for Axis X | 8m/min | ||
| Max. travel of Axis Z | 710/960/1460mm (28''x38''x57'') | ||
| Max. travel of Axis X | 250mm(10'') / 320mm (12.6’’, Gang tools) |
280mm(11'') / 320mm (12.6’’, Gang tools) |
280mm(11'') / 320mm (12.6’’, Gang tools) |
| Min input | 0.001mm (0.00004'') | ||
| Tool cross section | 25x25mm (1'' x 1'') | ||
| External diameter | Φ75mm (3'') | ||
| Taper of bore | MT-4 | MT-5 | MT-5 |
| Max. Traverse | 130mm (5'') | ||
| X/Z motor torque | 4.7/7Nm | ||
| Power of main motor | 5.5kW (Optional 7.5kW) | ||
| Coolant pump motor power | 75W | ||
| Overall dimensions (L×W×H) | 2060/2310/2790×1180×1500mm (81''/91''/110''x46''x59'') | ||
| Net weight | 2100/2250/2800 kg | 2200/2350/2900kg | 2200/2350/2900kg |
1. Hydraulic tailstock;
2. Solid or hollow hydraulic chuck;
3. Steady rest;
4. 6 or 8 stations automatic tool post;
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.
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