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VST850 Frequency Infinitely Variable Speed Lathe
AC variable frequency speeding device with high power has been selected on Torn VST850 Lathe. Frequency Infinitely Variable Speed Metal Centre Lathe Machine main driving has been driven by AC motor.
- VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe MachineDownload
Technical parameters of VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe
Applications
Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine application range is wide, can finely meet the requirements of every kind of industry machining, such as external cylinder, internal hole, slot, face and threads; besides, Fortune Pacific Brand VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe Machine can also meet the requirements of drilling, boring, broaching oil groove, keyway etc. Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine is excellent equipment for turning axial, dished, sleeve and special type of surface workpiece.
Features
1. AC variable frequency speeding device with high power has been selected on Torn VST850 Lathe.
2. Frequency Infinitely Variable Speed Metal Centre Lathe Machine main driving has been driven by AC motor, 4 steps infinitely variable can be realized by sliding gear with excellent performance of torque and power.
3. The operating system of Frequency Infinitely Variable Speed Metal Centre Lathe Machine is controlled by electric, hydraulic, mechanical mechanism;
4. X and Z-axis has function of rapid traverse and combined feed, easy for operating.
Standard accessories
1. 4-jaw chuck;
2. Dead center;
3. Coolant system;
4. Work light;
Optional accessories
1. 4-jaw chuck;
2. Steady rest;
3. Roller supporting device;
4. Follow rest;
5. Grinding or milling head device;
6. Taper turning device;
7. Living center;
8. 2-axis or 3-axis DRO (Digital Read Out);
| Model | Unit | VST850 |
|---|---|---|
| Max. swing over bed | mm(in) | 850(33’’) |
| Max. swing over carriage | mm(in) | 520(20’’) |
| Max. swing over gap (for gap bed lathe) | mm(in) | 1150(45’’) |
| Max turning length | mm(in) | 1500~12000(60’’~475’’) |
| Max weight of workpiece between centers | kg | 4000 |
| Width of bed | mm(in) | 600(24’’) |
| Spindle speed range | r/min | 5~40~80; 10~80~160; 20~160~315; 40~315~630 |
| Spindle speed step | 4 (infinitely variable speed) | |
| Spindle bore diameter | mm(in) | 100(4’’) |
| Diameter of spindle front bearing | mm(in) | 160(6’’) |
| Taper of spindle bore | Metric 120 | |
| Spindle nose | ISO | A2-11 |
| Section of tool shank | mm(in) | 32x32(1.3’’x1.3’’) |
| Swivel angle of tool post | ° | ±90° |
| Travel of tool post | mm(in) | 250(10’’) |
| Travel of cross slide | mm(in) | 600(24’’) |
| Rapid travel speed of tool post | mm/min | 900 |
| Rapid travel speed of transverse | mm/min | 1800 |
| Rapid travel speed of longitudinal | mm/min | 3640 |
| Metric threads | mm | 56kinds; 1-120 |
| Inch threads | TPI | 56kinds; 30-1/4’’ |
| Module threads | mm | 56kinds; 0.5-60 |
| Diametrical pitch threads | DP | 56kinds; 60-0.5 |
| Longitudinal feeds | mm/rev | 64kinds; 0.08-9.6 |
| Transverse feeds | mm/rev | 64kinds; 0.04-4.8 |
| Longitudinal tool post feeds | mm/rev | 64kinds; 0.02-2.4 |
| Diameter of tailstock sleeve | mm(in) | 120(5’’) |
| Taper of tailstock sleeve | MT-6 | |
| Travel of tailstock sleeve | mm(in) | 250(10’’) |
| Main motor power | kW | 15 |
| Rapid travel motor power | kW | 1.1 |
| Cooling pump motor power | kW | 0.15 |
| Net weight (3m) | kg | 5300 |
| Additional weight per 1m | kg | 1000 |
| Overall dimension (L x W x H) (3m) | mm | 5150 x 1500 x 1500 |
| Packing size (L x W x H) (3m) | mm | 5500 x 1900 x 1820 |
Applications
Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine application range is wide, can finely meet the requirements of every kind of industry machining, such as external cylinder, internal hole, slot, face and threads; besides, Fortune Pacific Brand VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe Machine can also meet the requirements of drilling, boring, broaching oil groove, keyway etc. Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine is excellent equipment for turning axial, dished, sleeve and special type of surface workpiece.
Features
1. AC variable frequency speeding device with high power has been selected on Torn VST850 Lathe.
2. Frequency Infinitely Variable Speed Metal Centre Lathe Machine main driving has been driven by AC motor, 4 steps infinitely variable can be realized by sliding gear with excellent performance of torque and power.
3. The operating system of Frequency Infinitely Variable Speed Metal Centre Lathe Machine is controlled by electric, hydraulic, mechanical mechanism;
4. X and Z-axis has function of rapid traverse and combined feed, easy for operating.
Standard accessories
1. 4-jaw chuck;
2. Dead center;
3. Coolant system;
4. Work light;
Optional accessories
1. 4-jaw chuck;
2. Steady rest;
3. Roller supporting device;
4. Follow rest;
5. Grinding or milling head device;
6. Taper turning device;
7. Living center;
8. 2-axis or 3-axis DRO (Digital Read Out);
Features
1. AC variable frequency speeding device with high power has been selected on Torn VST850 Lathe.
2. Frequency Infinitely Variable Speed Metal Centre Lathe Machine main driving has been driven by AC motor, 4 steps infinitely variable can be realized by sliding gear with excellent performance of torque and power.
3. The operating system of Frequency Infinitely Variable Speed Metal Centre Lathe Machine is controlled by electric, hydraulic, mechanical mechanism;
4. X and Z-axis has function of rapid traverse and combined feed, easy for operating.
1. AC variable frequency speeding device with high power has been selected on Torn VST850 Lathe.
2. Frequency Infinitely Variable Speed Metal Centre Lathe Machine main driving has been driven by AC motor, 4 steps infinitely variable can be realized by sliding gear with excellent performance of torque and power.
3. The operating system of Frequency Infinitely Variable Speed Metal Centre Lathe Machine is controlled by electric, hydraulic, mechanical mechanism;
4. X and Z-axis has function of rapid traverse and combined feed, easy for operating.
Standard accessories
1. 4-jaw chuck;
2. Dead center;
3. Coolant system;
4. Work light;
Optional accessories
1. 4-jaw chuck;
2. Steady rest;
3. Roller supporting device;
4. Follow rest;
5. Grinding or milling head device;
6. Taper turning device;
7. Living center;
8. 2-axis or 3-axis DRO (Digital Read Out);
1. 4-jaw chuck;
2. Dead center;
3. Coolant system;
4. Work light;
Optional accessories
1. 4-jaw chuck;
2. Steady rest;
3. Roller supporting device;
4. Follow rest;
5. Grinding or milling head device;
6. Taper turning device;
7. Living center;
8. 2-axis or 3-axis DRO (Digital Read Out);
Applications
Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine application range is wide, can finely meet the requirements of every kind of industry machining, such as external cylinder, internal hole, slot, face and threads; besides, Fortune Pacific Brand VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe Machine can also meet the requirements of drilling, boring, broaching oil groove, keyway etc. Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine is excellent equipment for turning axial, dished, sleeve and special type of surface workpiece.
Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine application range is wide, can finely meet the requirements of every kind of industry machining, such as external cylinder, internal hole, slot, face and threads; besides, Fortune Pacific Brand VST850 4tons Frequency Infinitely Variable Speed Metal Centre Lathe Machine can also meet the requirements of drilling, boring, broaching oil groove, keyway etc. Fortune Pacific Brand Frequency Infinitely Variable Speed Metal Centre Lathe Machine is excellent equipment for turning axial, dished, sleeve and special type of surface workpiece.
Products
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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.