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20" Metal Cutting Radial Arm Saw


  • 7.5 HP 3 phase TEFC (totally enclosed fan cooled) motor
  • 50/60 HZ
  • 208, 230, 460 or 575 volt motor
  • 7” depth of cut
  • Automatic blade braking system
  • Manual chain crank crossfeed
  • Manual hand crank for refined carriage control
  • Adjustable crosscut stop
  • Base column lock
  • E-Stop
  • Standard lower elevation on front of frame
  • T-Slot Extruded Metal Table
  • Magnetic starter with low voltage and overload protection
  • Complete upper and lower blade guards
  • Standard work table height 34 ½ ″
  • Made in USA

Frequently Bought Together

20" Metal Cutting Radial Arm Saw + 20" Steel Crosscut Blade for Radial Arm Saws and Beam Saws + 20" Aluminum Crosscut Blade for Radial Arm Saws and Beam Saws
Price for all three: $13,887.47


The 20″ Metal Cutting Series is the ultimate workhorse of the metal industry.

It is capable of operating 2 to 3 shifts per day in an industrial setting with the versatility to:

  • crosscut
  • bevel cut
  • miter cut
  • compound miter cut


This series can cut 7” deep in a single pass and has the crosscut capacity of 23” or 31″, depending on the model you choose. This heavy 850-pound machine is made to withstand years of industrial cutting.

We pride ourselves in manufacturing an American-made product. From the motor to the heavy cast iron arm, the Metal Cutting Series Radial Arm Saw is a dependable machine for years to come. This machine is made from cast and ductile iron for vibration-free operation. It also features heavy-gauge steel, powder-coated frame, and legs, plus an oversized tabletop. With a TEFC (totally enclosed fan cooled) motor and internal automatic brake, this radial arm saw has the best cut quality in its class.

The Metal Cutting Radial Arm Saw features a T-slot aluminum extruded table. Manual clamps are set in the extrusions. This upgraded table provides the stability and support for heavy cutting.

Do you have the capability to run 3 phase power at your location? If so, this is the model you want. 3 phase power creates a smoother motor start-up. With no relays or capacitors inside the motor, there tends to be less maintenance and longer service life.


Recent updates to this model include:

  • A more accessible start/stop button on the left front edge of the table
  • E-stop is now a standard feature
  • New extended elevating cranks for easy elevation
  • Multiple table options

Additional information

Weight 1000 lbs
Dimensions 72 × 52 × 48 in

7.5 hp 3 phase TEFC (totally enclosed, fan cooled) motor

Product Length (Inches)


Product Width (Inches)

Product Height (Inches)

Cuttable Material

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Max Crosscut


Max Depth Cut

Can do the following cuts

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Capable of Rip Cuts

Voltage Options

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Phases of Voltage Available

Pneumatic Clamping Ability?

Powered Feed Option?

Ordering & Shipping

Manufacturing of Radial Arm Saws happens after the customer orders. Machines are considered custom and are made voltage specific. If you are unsure about the power requirements of your location, please get in touch with an electrician.

Because some cutting applications are custom and specific, our team may contact you about your purchase. It is our priority to build a saw that fits our customers’ needs.

Radial Arm Saws are assembled and tested in our facility. After being test run, the saw is packaged and placed on a skid. The legs are attached to the skid. This makes setup and installation easy.

When the Radial Arm Saw is delivered, simply:

  1. Lift the machine
  2. Install the legs
  3. Wire in the mag starter
  4. Install the saw blade of your choice


These machines have provided affordable metal cutting in thousands of workshops and manufacturing companies throughout the world. Count on everyday repeatability and accuracy for years to come.

16″/20″ Metal Cutting Radial Arm Saw Type 7 – Models 3579-16M, 3579-16L and Models 3579-20M, 3579-20L


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Metal Cutting Radial Arm Saws can cut materials such as:

  • aluminum
  • steel
  • brass
  • bronze
  • plastics
  • fiberglass

This saw is perfect for cutting extrusions and profiles. They can make several kinds of cuts.

For example: The Metal Cutting Radial Arm Saw will crosscut, miter, bevel and do compound miter work, all within one saw.

The Metal Cutter holds several advantages over other saws in the industry.

  • It is able to cut large sized material.
  • It can also cut a large volume of pieces at one time.

Extrusion companies, sign manufacturers, aluminum window and door manufacturers, hollow metal door operations, metal decking manufacturers, metal roof manufacturers, fenestration industries and the glass and the glazing industry frequently use our radial arm saws.

  • We offer two types of operation for Super Duty Metal Cutting Saws.

    On a standard machine, the operator powers the manual radial arm saw. The operator pulls the handle and the blade moves forward radially to make the cut.

    The other option is a semi-automatic saw. An electronic powered cross feed is added on the machine to make it semi-automatic. With the push of a button, the blade will cut through the material.

    With years of experience in metal cutting, we can assist you with choosing a machine for your application. Ask us about clamping, feeding material, and complete automatic sawing packages.

Blade Options for 20″ Metal Cutting Saw:

Saw Accessories

Saw Parts


Check Out Our Product Video

Do You Need Test Cuts?

Are you unsure if this machine can cut your material?

Ask about sending in a material sample to Original Saw. We will cut your material on our shop saw and make a video. Afterwards, you can review the videoed test cuts and make informed decisions. Most importantly, we want you to feel comfortable with your solutions before your purchase.

Would you like to send us your material?

Email us at or call at (800) 733-4063 to start the process.

Compatible Super Duty Metal Saw Accessories

A Super Duty Metal Cutting Saw is much more than a radial arm saw. When paired with optional equipment, it is a platform for a wide variety of cut-off work.