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20″ Super Duty Radial Arm Saw


  • 7.5 HP 3 phase TEFC (totally enclosed fan cooled) motor
  • 50/60 HZ
  • 6 ¼ ” depth of cut
  • Carriage return spring
  • Adjustable crosscut stop
  • Base column lock
  • E-Stop
  • Oversized MDF table top with aluminum T-slots
  • Automatic blade braking system
  • Arbor nut and blade collars
  • Precision carriage riding on 8 wide-contact double row ball bearings for smooth, vibration-free travel
  • Lower elevation on front of frame
  • Standard work table height 33″
  • Complete upper and lower blade guards
  • Powder coated heavy gauge steel frame and legs
  • Made in USA


20″ Super Duty Radial Arm Saws are ideal for deep, long cuts other saws can’t handle.

With their large 7.5 horsepower arbor motors, the 20″ Super Duty Radial Arm Saws can operate 2 to 3 shifts per day in an industrial woodcutting environment. The Super Duty Series can perform a wide variety of cutting operations.

The 20″ Super Duty Radial Arm Saw can perform these cuts day in and day out:

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

The 20″ Super Duty Radial Arm Saw can cut a respectable 6 ¼” deep in a single pass. Depending on the model chosen, this saw also has a 23″- 31″ crosscut capability. Use the massive 850-pound Super Duty Radial Arm Saw for the rigors of everyday industrial use.

20″ Super Duty Radial Arm Saws are well suited for use in the following:

  • Manufacturing plants
  • Creating departments
  • Timber homes
  • Prefabricated housing companies
  • Door companies
  • Truss plants
  • Many other industrial woodcutting settings

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.

We pride ourselves in manufacturing an American-made product. From the motor to the heavy cast iron arm, the 20″ Super Duty Series Radial Arm Saw is a dependable machine for years to come. Above all, we use heavy-duty materials like cast and ductile iron to make a saw that has vibration-free operation. This 20″ Radial Arm Saw also has a heavy-gauge steel, powder-coated frame and legs. In addition, a sizable MDF tabletop provides a stable cutting surface. With a TEFC (totally enclosed fan-cooled) motor and internal automatic brake, this radial arm saw has the best cut quality in its class.

These saws are more than a radial arm saw. Additionally, when coupled with optional equipment, they are a woodcutting platform for a wide variety of cutoff work. Add an Electronic Powered Crossfeed to the machine to convert it to push-button operation.

Recent updates to this model include the following:

  • The left front edge of the table has a more accessible start/stop button. 
  • Manual clamps are now standard on the 20″ Super Duty Radial Arm Saw. Specifically, the MDF table of the Radial Arm Saw contains channels that hold aluminum extruded t-slot tracks. In addition, the t-slot tracks house the manual clamps.
  • E-stops come standard on the Super Duty Radial Arm Saws. This safety mechanism specifically shuts off the machine in an emergency.
  • New, more accessible extended elevating cranks make raising and lowering the carriage effortless.
  • Multiple table options are available.  
  • A narrower guard design featuring a shorter shaft allows for a deeper bevel cut.
  • The removable door over the guard assembly lets the blade be changed quickly.
  • Finally, 20″ Super Duty Radial Arm Saws are compatible with various Original Saw accessories, such Saw Extension Tables and Saw Measuring Systems.

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


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:

  • Lift the machine
  • Install the legs
  • Wire in the mag starter
  • 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.


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Original Saw Company offers three types of operation for Radial Arm Saws.


  • Manual Operation – Standard Radial Arm Saws are powered by the operator.  The operator pulls the handle and the blade moves forward radially to make the cut.  Manual operation is a standard feature on all Contractor and Heavy Duty Series Radial Arm Saws.
  • Hand Crank Operation – Hand Cranks are used instead of Manual Operation for better carriage control.  This operation is ideal for cutting large timbers, metal cutting applications, and heavy dado work.  Hand Crank Operation is available on 22.5” Super Duty Radial Arm Saws and all Metal Cutting Radial Arm Saws.
  • Semi-Automatic Operation – Add an electronic powered cross feed to a Radial Arm Saw for semi-automatic operation.  Push the button on the front side of the Radial Arm Saw and the blade will cut through the material and automatically return to the home position.  This operation is currently available on all Super Duty Series models and Metal Cutting Radial Arm Saws.


Our team has years of cutting experience.  Contact us for recommendations about clamping, feeding material, and complete automatic sawing packages. 

A 20" General Purpose Blade for Radial Arm Saws is recommended for this radial arm saw. It features 60 teeth and -5 degree hook. 


Blades are sold separately for this 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 Saw Accessories

These saws are much more than a “typical” radial arm saw. 

When coupled with optional equipment below, they are a wood-cutting platform for a wide variety of cutoff work.

The Super Duty Wood Cutting saws can be outfitted with an optional electronic powered crossfeed that converts the machine to push-button operation.