| Item | D2080 W1100 |
| Capacity | |
| Max swing over bed | 2080mm |
| Max swing over gap | 2380mm |
| Max swing over cross slide | 1600mm |
| Distance between centers | 2000mm, 3000mm, 4000mm, 5000mm…… |
| Max weight of workpiece | 10000kg |
| Width of the bed | 1100mm |
| Headstock | |
| Spindle bore | 130mm |
| Spindle taper | Metric 140 |
| Spindle speed range | 2-200rpm (Number of revolutions: Clockwise 21kinds, counterclockwise 12kinds) |
| Gearbox-threads and feeds | |
| Metric threads range | 1~120mm / 44kinds |
| Inch threads range | 1/4~24TPI / 31kinds |
| Moudle threads range | 0.5~60mm / 45kinds |
| Diametral threads range | 1/2~56DP / 38kinds |
| Longitudinal feed range | 0.1~12mm / 56kinds |
| Cross feed range | 0.05~6mm / 56kinds |
| Rapid feed longitudinal/cross | 3400/1700mm/min |
| Tool post | |
| Distance between Center & Tool | 48mm |
| Tool section | 45x45mm |
| Carriage | |
| Travel of cross slide | 860mm |
| Travel of compound rest | 280mm |
| Electric tailstock | |
| Diameter of tailstock sleeve | 260mm |
| Taper bore of tailstock sleeve | Metric 80 |
| Travel of tailstock sleeve | 300mm |
| Motor | |
| Main motor power | 30kW |
| Coolant pump motor | 0.15kW |
| Rapid feed motor power | 1.5kW |
| Tailstock motor power | 1.5kW |
| Item 01 | Descriptions | |
| 01.01 | K78 4-jaw chuck Φ1250mm | |
| 01.02 | Steady rest Φ200-Φ500mm | |
| 01.03 | Main spindle centre Morse 6# | |
| 01.04 | Centre sleeve | |
| 01.05 | Electric Tailstock | |
| 01.06 | Tailstock centre and Nut (60°centre) | |
| 01.07 | Adjusting bolt of shim plate | |
| 01.08 | Anchor bolt (Including nut and gasket) | |
| 01.09 | Gear (equipped on the machine) | |
| 01.10 | Socket head wrench fixed by 4-jaw chuck | |
| 01.11 | Oil gun | |
| 01.12 | Tool post spanner |
| Item 02 | Descriptions | |
| 02.01 | Open-type Steady rest | |
| 02.02 | Larger size steady rest Φ500-Φ800mm | |
| 02.03 | Changed to Big heavy-duty four-jaw chuck Φ1600mm | |
| 02.04 | Follower rest Φ80-Φ350mm | |
| 02.05 | Tool post cover and chuck cover |
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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