UHM36 Over Arm Universal Knee Milling Machine
- UHM36 UHM36C UHM36CL Over Arm Universal Knee Milling MachineDownload
| Items | UHM36 | UHM36C | UHM36CL |
| Working area | |||
| Worktable size (L×W) | 1325x360mm | 1325x360mm | 1600x360mm |
| T slot (Width x No. x pitch) | 18x3x70mm | 18x3x70mm | 18x3x70mm |
| Max. load of table | 500kg | 500kg | 500kg |
| Table rotation | optional: ±45° | optional: ±45° | no |
| Distance from horizontal spindle center to worktable surface | 20-470mm | 20-470mm | 20-470mm |
| Travels | |||
| Worktable travel (X) | 750mm | 1100mm | 1300mm |
| Worktable travel (Y) | 320mm （with DRO:290mm） |
320mm （with DRO:290mm） |
320mm （with DRO:290mm） |
| Worktable travel (Z) | 450mm | 450mm | 450mm |
| Spindle | |||
| Horizontal spindle speed | 12 steps; 60-1800rpm |
12 steps; 60-1800rpm |
12 steps; 60-1800rpm |
| Spindle taper | 7:24, ISO50 | 7:24, ISO50 | 7:24, ISO50 |
| Motor power | 5.5kW | 5.5kW | 5.5kW |
| Feed | |||
| Rapid feed (X/Y/Z) | 1200/800/600mm/min | 1200/800/600mm/min | 1200/800/600mm/min |
| Feed range (X) | 30-750mm/min | 30-830mm/min | 30-830mm/min |
| Feed range (Y) | 20-500mm/min | 20-500mm/min | 20-500mm/min |
| Feed range (Z) | 15-375mm/min | 15-375mm/min | 15-375mm/min |
| Others | |||
| Machine size (L×W×H) | 2245x2100x1870mm | 2245x2100x1870mm | 2520x2100x1870mm |
| Net weight | 2450kg | 2500kg | 2550kg |
| 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 | Central lubrication | |
| 01.07 | Double-ended wrench | |
| 01.08 | Inner hexagon spanner | |
| 01.09 | Vertical milling head(ISO40) | |
| 01.10 | Operator manual |
| Item 02 | Descriptions | |
| 02.01 | 3-aixs Digital Read Out | Y axis travel will be 20-30mm short after installed DRO |
| 02.02 | Work table rotary±45°(not equipped on UHM36CL) | |
| 02.03 | Hang up panel(Aluminum) | |
| 02.04 | Dividing head | |
| 02.05 | Rotary table | |
| 02.06 | Machine vise | |
| 02.07 | Milling chuck (ISO40) | |
| 02.08 | Clamping kits |
Features
- Massive machine frame with very rigid knee slide;
- Powerful gear-driven head for heavy cutting;
- Driven by AC servo motor to achieve automatic table feed and rapid feed on X, Y and Z axes;
- Hardened and ground table for precision clamping and heavy load;
- Worktable swivels ±45° on the horizontal plane is optional;
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.
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.
| 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 | Central lubrication | |
| 01.07 | Double-ended wrench | |
| 01.08 | Inner hexagon spanner | |
| 01.09 | Vertical milling head(ISO40) | |
| 01.10 | Operator manual |
| Item 02 | Descriptions | |
| 02.01 | 3-aixs Digital Read Out | Y axis travel will be 20-30mm short after installed DRO |
| 02.02 | Work table rotary±45°(not equipped on UHM36CL) | |
| 02.03 | Hang up panel(Aluminum) | |
| 02.04 | Dividing head | |
| 02.05 | Rotary table | |
| 02.06 | Machine vise | |
| 02.07 | Milling chuck (ISO40) | |
| 02.08 | Clamping kits |
- Massive machine frame with very rigid knee slide;
- Powerful gear-driven head for heavy cutting;
- Driven by AC servo motor to achieve automatic table feed and rapid feed on X, Y and Z axes;
- Hardened and ground table for precision clamping and heavy load;
- Worktable swivels ±45° on the horizontal plane is optional;
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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