| Items | TL6240 | TL6240C |
| Capacity | ||
| Max. swing dia. over bed | Φ400 mm | |
| Max. swing dia. over slide | Φ200 mm | |
| Max. swing dia. over gap | Φ630 mm | |
| Effective length in gap | 240 mm | |
| Max. workpiece length | 1000/1500/2000/3000 mm | |
| Max. turning length | 950 /1450/1950/2950 mm | |
| Bed width | 390 mm | |
| Spindle | ||
| Spindle bore diameter | Φ52 mm | Φ105 mm |
| Taper of spindle bore | MT-6 | Φ113, 1:20 |
| Type of spindle nose | C6 | D8 |
| Spindle speed | 9-1600 rpm | 36-1600 |
| Spindle speed steps。 | 24 | 12 |
| Feeds and threads | ||
| Max. travel of upper tool post | 145 mm | |
| Max. travel of lower tool post | 320 mm | |
| Tool section | 25x25 mm | |
| Crosswise quick moving speed | 50Hz: 1.9 m/min; 60Hz: 2.3 m/min | |
| Longitudinal quick moving speed | 50Hz: 4.5 m/min; 60Hz: 5.4 m/min | |
| Cross feeds range | 0.012-2.73 mm/r; 93kinds | 0.027-1.07 mm/r; 65kinds |
| Longitudinal feeds range | 0.028-6.43 mm/r; 93kinds | 0.63-2.52 mm/r; 65kinds |
| Metric threads | 0.5-224 mm; 48kinds | 1-14 mm; 22kinds |
| Inch threads | 72-1/8TPI; 46kinds | 28-2TPI; 25kinds |
| Module threads | 0.5-112 mm; 42kinds | 0.5-7 mm; 18kinds |
| Diametric pitch threads | 56-1/4DP; 45kinds | 56-4DP; 24kinds |
| Tailstock | ||
| Diameter of quill | Φ75 mm | |
| Max. travel of quill | 150 | |
| Taper of quill | MT5 mm | |
| Motors | ||
| Main spindle motor | 7.5 kW | |
| Rapid traverse motor power | 0.3 kW | |
| Coolant pump motor | 0.12 kW | |
| Others | ||
| L x W x H (of lathe) | 1000mm: 2382x975x1450 mm 1500mm: 2632x975x1450 mm 2000mm: 3632x975x1450 mm 3000mm: 4632x975x1450 mm |
|
| Net weight | 2050/2100/2300/2500/2900 kg | |
| Item 01 | Descriptions | |
| 01.01 | 3-jaw Chuck | |
| 01.02 | 4-jaw Chuck | |
| 01.03 | Steady rest | |
| 01.04 | Follow rest | |
| 01.05 | Face plate | |
| 01.06 | 4-way tool post | |
| 01.07 | Foot brake | |
| 01.08 | Full length splash guard (short type on 3m lathe) | |
| 01.09 | Work lamp | |
| 01.10 | Longitudinal mechanical stop (without on 3m lathe) | |
| 01.11 | Chuck guard | |
| 01.12 | Tool post guard |
| Item 02 | Descriptions | |
| 02.01 | Taper Turning Attachment | |
| 02.02 | Thread chasing dial | |
| 02.03 | Quick Change tool post | |
| 02.04 | 2-axis or 3-axis DRO | |
| 02.05 | Live center | |
| 02.06 | Leadscrew guard |
Features
Threading Inch, Metric, Module and D.P.;
Perform drilling, boring and groove broaching;
Respectively with through-hole spindle bore, that can hold bar stocks in larger diameters;
Both Inch and Metric system are used on these series lathes, it's easy for people from different measuring systems countries;
There are hand brake and foot brake for users to choose;
These series lathes operate on power supply of different voltages (220V/380V/420V) and different frequencies (50Hz/60Hz).
Threading Inch, Metric, Module and D.P.;
Perform drilling, boring and groove broaching;
Respectively with through-hole spindle bore, that can hold bar stocks in larger diameters;
Both Inch and Metric system are used on these series lathes, it's easy for people from different measuring systems countries;
There are hand brake and foot brake for users to choose;
These series lathes operate on power supply of different voltages (220V/380V/420V) and different frequencies (50Hz/60Hz).
| Item 01 | Descriptions | |
| 01.01 | 3-jaw Chuck | |
| 01.02 | 4-jaw Chuck | |
| 01.03 | Steady rest | |
| 01.04 | Follow rest | |
| 01.05 | Face plate | |
| 01.06 | 4-way tool post | |
| 01.07 | Foot brake | |
| 01.08 | Full length splash guard (short type on 3m lathe) | |
| 01.09 | Work lamp | |
| 01.10 | Longitudinal mechanical stop (without on 3m lathe) | |
| 01.11 | Chuck guard | |
| 01.12 | Tool post guard |
| Item 02 | Descriptions | |
| 02.01 | Taper Turning Attachment | |
| 02.02 | Thread chasing dial | |
| 02.03 | Quick Change tool post | |
| 02.04 | 2-axis or 3-axis DRO | |
| 02.05 | Live center | |
| 02.06 | Leadscrew guard |
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.