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UHM42G UHM42GL Heavy-duty Universal Horizontal Knee-type Over Arm Milling Machine has better construction and superior machining functions such as drilling, boring, milling of plane, inclined plane and slot, and such functions available by use of the corresponding attachments.
Types of Milling Machines
Knee-Type milling machinesemploy a vertical workspace supported by a knee, which is an adjustable vertical casting. The knee supports a saddle and can be adjusted to allow for a customizable workspace.
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine is a horizontal beam present at the top face of the column. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may be a single casting which slides on the dovetail ways present on the top face of the column.
The overarm is used to fastened arbor support. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may consist of one or two cylindrical bars which slide through the holes in the column.
Elevator milling machine
There are universal, horizontal and vertical, etc., mainly used for processing small and medium-sized parts, the most widely used.
Single-column milling machine and single-arm milling machine
The former horizontal milling head can be moved along the column guide rail, and the table can be fed longitudinally; the latter vertical milling head can be moved horizontally along the cantilever rail, and the cantilever can also be adjusted along the column rail. Both are used to machine large parts.
| Items |
UHM42G | UHM42GL |
| Working area | ||
| Table size | 2000x425mm | 2500x425mm |
| T-slot (width x No. x pitch) | 18mmx3x90mm | 18mmx3x90mm |
| Max. load of table | 800kg | 800kg |
| Distance from spindle nose to table surface | 70-470mm | 70-470mm |
| Distance from spindle axis to overarm | 180mm | 180mm |
| Travels | ||
| Longitudinal travel of X axis | 1250mm | 1600mm |
| Cross travel of Y axis | 400mm | 400mm |
| Horizontal travel of Z axis | 400mm | 400mm |
| Spindle | ||
| Spindle taper | ISO 50 7:24 | ISO 50 7:24 |
| Spindle speed | 18-1400rpm | 18-1400rpm |
| Spindle speed step | 20 | 20 |
| Diameter of cutter arbor | Ø40mm | Ø40mm |
| Main motor power | 11kW | 11kW |
| Feed | ||
| Feed speed range of X/Y axis | 10-1250mm/min | 10-1250mm/min |
| Feed speed range of Z axis | 2.5-315mm/min | 2.5-315mm/min |
| Rapid feed motor power | 3kW | 3kW |
| Dimension and weight | ||
| Overall dimension | 2770x2530x1950mm | 2770x3030x1950mm |
| Net weight | 5050kg | 5200kg |
| Item 01 | Descriptions | |
| 01.01 | Draw bar | |
| 01.02 | Lifting crank | |
| 01.03 | Horizontal arbor assembly | |
| 01.04 | Working lamp | |
| 01.05 | Coolant system | |
| 01.06 | Milling sleeve | |
| 01.07 | Double-ended wrench | |
| 01.08 | Inner hexagon spanner |
| Item 02 | Descriptions | |
| 02.01 | 3-aixs Digital Read Out | |
| 02.02 | Dividing head | |
| 02.03 | Rotary table | |
| 02.04 | Machine vise | |
| 02.05 | Milling chuck | |
| 02.06 | Clamping kits |
Features
- UHM42G Heavy-duty Milling Machine is high in rigidity and accuracy for heavy and high-speed cutting;
- The power of main spindle motor is high and speed range is wide;
- UHM42G Horizontal knee-type milling machine is manufactured from high quality cast iron;
- The important part is manufactured from alloy steel, ensuring maximum stability for heavy duty cutting;
- Digital readout (DRO) can be offered according to customers’ requirement;
UHM42G UHM42GL Heavy-duty Universal Horizontal Knee-type Over Arm Milling Machine has better construction and superior machining functions such as drilling, boring, milling of plane, inclined plane and slot, and such functions available by use of the corresponding attachments.
Types of Milling Machines
Knee-Type milling machinesemploy a vertical workspace supported by a knee, which is an adjustable vertical casting. The knee supports a saddle and can be adjusted to allow for a customizable workspace.
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine is a horizontal beam present at the top face of the column. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may be a single casting which slides on the dovetail ways present on the top face of the column.
The overarm is used to fastened arbor support. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may consist of one or two cylindrical bars which slide through the holes in the column.
Elevator milling machine
There are universal, horizontal and vertical, etc., mainly used for processing small and medium-sized parts, the most widely used.
Single-column milling machine and single-arm milling machine
The former horizontal milling head can be moved along the column guide rail, and the table can be fed longitudinally; the latter vertical milling head can be moved horizontally along the cantilever rail, and the cantilever can also be adjusted along the column rail. Both are used to machine large parts.
Horizontal Milling Machine Construction
The main part of Horizontal Milling Machine is base, Column, Knee, Saddle, Table, Overarm, Arbor Support and Elevating Screw.
1. Horizontal Milling Machine Base: It gives support and rigidity to the machine and also acts as a reservoir for the cutting fluids.
2. The Mill Column: The column of Horizontal Knee type Milling Machine is the main supporting frame mounted vertically on the base. The column is box shaped, heavily ribbed inside and houses all the driving mechanisms for the spindle and table feed.
3. The Mill Machine Knee: The knee is a rigid casting mounted on the front face of the column. The knee moves vertically along the guide ways and this movement enables to adjust the distance between the cutter and the job mounted on the table. The adjustment is obtained manually or automatically by operating the elevating screw provided below the knee.
4. The Mill Machine Saddle: The saddle rests on the knee and constitutes the intermediate part between the knee and the table. The saddle moves transversely, i.e., crosswise (in or out) on guide ways provided on the knee.
5. The Mill Machine Table: The table rests on guide ways in the saddle and provides support to the work. The table is made of cast iron, its top surface is accurately machined and carriers T-slots which accommodate the clamping bolt for fixing the work. The worktable and hence the job fitted on it is given motions in three directions:
. Vertical (up and down) movement provided by raising or lowering the knee.
. Cross (in or out) or transverse motion provided by moving the saddle in relation to knee.
. Longitudinal (back and forth) motion provided by hand wheel fitted on the side of feed screw.
In addition to the above motions, the table of a universal milling machine can be swiveled 45° to either side of the centre line and thus fed at an angle to the spindle.
The main part of Horizontal Milling Machine is base, Column, Knee, Saddle, Table, Overarm, Arbor Support and Elevating Screw.
1. Horizontal Milling Machine Base: It gives support and rigidity to the machine and also acts as a reservoir for the cutting fluids.
2. The Mill Column: The column of Horizontal Knee type Milling Machine is the main supporting frame mounted vertically on the base. The column is box shaped, heavily ribbed inside and houses all the driving mechanisms for the spindle and table feed.
3. The Mill Machine Knee: The knee is a rigid casting mounted on the front face of the column. The knee moves vertically along the guide ways and this movement enables to adjust the distance between the cutter and the job mounted on the table. The adjustment is obtained manually or automatically by operating the elevating screw provided below the knee.
4. The Mill Machine Saddle: The saddle rests on the knee and constitutes the intermediate part between the knee and the table. The saddle moves transversely, i.e., crosswise (in or out) on guide ways provided on the knee.
5. The Mill Machine Table: The table rests on guide ways in the saddle and provides support to the work. The table is made of cast iron, its top surface is accurately machined and carriers T-slots which accommodate the clamping bolt for fixing the work. The worktable and hence the job fitted on it is given motions in three directions:
. Vertical (up and down) movement provided by raising or lowering the knee.
. Cross (in or out) or transverse motion provided by moving the saddle in relation to knee.
. Longitudinal (back and forth) motion provided by hand wheel fitted on the side of feed screw.
In addition to the above motions, the table of a universal milling machine can be swiveled 45° to either side of the centre line and thus fed at an angle to the spindle.
Definition of the milling machine tools
FORTUNE PACIFIC milling machine mainly refers to a machine tool that uses a milling cutter to machine various surfaces of a workpiece. Usually, the milling cutter mainly moves in a rotary motion, and the movement of the workpiece and the milling cutter is a feed motion. It can process planes, grooves, and various surfaces, gears, and so on.
FORTUNE PACIFIC milling machine mainly refers to a machine tool that uses a milling cutter to machine various surfaces of a workpiece. Usually, the milling cutter mainly moves in a rotary motion, and the movement of the workpiece and the milling cutter is a feed motion. It can process planes, grooves, and various surfaces, gears, and so on.
Introduction of Milling (machining)
Milling is the machining process of using rotary cutters to remove material from a workpiece by advancing (or feeding) the cutter into the workpiece at a certain direction. The cutter may also be held at an angle relative to the axis of the tool. Milling covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. It is one of the most commonly used processes for machining custom parts to precise tolerances.
Milling is the machining process of using rotary cutters to remove material from a workpiece by advancing (or feeding) the cutter into the workpiece at a certain direction. The cutter may also be held at an angle relative to the axis of the tool. Milling covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. It is one of the most commonly used processes for machining custom parts to precise tolerances.
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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.