Price range: $4,700.00 through $5,950.00

SKU: KM20AS

The KM20AS 20 inch abrasive cutoff saw arm assembly provides a durable cutting head for custom abrasive saw systems and production cutoff system integration. It accommodates 16, 18, 20, and 22 inch abrasive blades for cutting mild-steel solids and shapes.

Available with a 15 HP or 20 HP motor, this metalworking abrasive cutoff saw assembly features a cast-iron arm and trunnion, steel construction, and a 2,500 RPM spindle for demanding production work.

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Weight 500 lbs
Dimensions 61 × 40 × 40 in
Motor options

15 HP, 20 HP

Voltage Options

230V, 460V

Please select:

Description

Performance Features

The KM20AS is a heavy-duty abrasive cutoff saw arm assembly built for shops and equipment builders that need a practical foundation for a custom abrasive saw system. Its motor choices, multiple wheel sizes, and secure trunnion mount support demanding metal-cutting work and production cutoff system integration.

15 HP and 20 HP Motor Options

Choose the 15 HP motor for standard heavy-duty cutting requirements or the optional 20 HP motor when the application calls for additional power. Both configurations use three-phase power and are available in 230V or 460V.

  • 15 HP standard motor option
  • Optional 20 HP motor configuration
  • Voltage specified when ordering

Multiple Abrasive Wheel Sizes

The saw arm accommodates 16, 18, 20, and 22 inch abrasive cutoff wheels. This gives system builders room to match the wheel size to the material, cutting requirement, and overall machine design.

  • 1 inch arbor
  • 2500 RPM spindle speed
  • Half-round wheel guard

Heavy Cast and Steel Construction

A cast iron saw arm and cast iron trunnion provide a solid cutting platform, while the all-steel construction supports repeated use in metalworking and production environments.

  • Cast iron saw arm
  • Cast iron trunnion
  • All-steel construction

Built for System Integration

The single four-bolt trunnion mount gives equipment builders a defined mounting point when incorporating the arm into a custom abrasive saw system, dedicated workstation, or production cutoff line.

  • Four-bolt trunnion mounting arrangement
  • Can be paired with application-specific workholding
  • Fits standalone stations or production cutoff systems

Practical Cutting Capacity

Based on mild steel, the KM20AS is rated to cut up to 4 inch solid material and 6 inch shapes. This capacity fits common bar, tube, pipe, and structural material cutoff work.

  • Up to 4 inch solid mild steel
  • Up to 6 inch mild-steel shapes
  • Magnetic on/off switch

Applications & Industries

This abrasive cutoff saw arm assembly fits operations that need a durable cutting head for standalone machinery, replacement equipment, or a larger material-processing system.

Custom Machinery Builders

Integrators can use the KM20AS as the cutting component in a purpose-built machine, adding the base, vise, guarding, material support, and operator controls required for the job.

  • Special-purpose abrasive saw systems
  • Dedicated cutoff workstations
  • Application-specific machine builds

Fabrication and Welding Shops

Supports day-to-day cutoff work on bar, tube, pipe, and structural shapes before fitting, welding, machining, or assembly.

  • Raw material preparation
  • Weldment component cutoff
  • Repair and fabrication work

Production Cutoff Operations

The arm assembly can be incorporated into a production cutoff system where repeat cuts, organized material flow, and dedicated workholding are important to the process.

  • Repeat part blank preparation
  • Batch cutting of metal stock
  • Integration with material support equipment

Machine Shops

Gives machine shops a practical way to cut stock to rough length before turning, milling, drilling, or other machining operations.

  • Bar and shape cutoff
  • Rough blank preparation
  • Pre-machining material handling

Maintenance Departments

Plant maintenance teams can build the saw arm into a dedicated cutting station for preparing replacement pieces, repair stock, and fabricated maintenance components.

  • Repair-part preparation
  • Plant fabrication work
  • General metal stock cutoff

KM20AS 20 Inch Abrasive Cutoff Saw Arm Assembly Specifications

Feature Details
Motor & Electrical
  • 15 HP, 3 PH: 230V or 460V
  • Optional 20 HP, 3 PH: 230V or 460V
  • Specify voltage when ordering
  • Controls: Magnetic on/off switch
Cutting System
  • Abrasive Cutoff Wheel Sizes: 16", 18", 20", and 22"
  • Spindle Speed: 2,500 RPM
  • Arbor: 1"
  • Abrasive cutoff wheel sold separately
Cutting Capacity
  • Mild-Steel Solids: Up to 4"
  • Mild-Steel Shapes: Up to 6"
Construction & Mounting
  • Saw Arm and Trunnion: Cast iron
  • Base: All-steel construction
  • Mount: Single four-bolt trunnion
  • Wheel Guard: Half-round
Machine Accessories
  • KW2 spindle wrench
  • KAB20R 20" general-purpose abrasive cutoff wheel, sold separately
Country of Origin
  • Made in the USA

Additional information

Weight 500 lbs
Dimensions 61 × 40 × 40 in
Motor options

15 HP, 20 HP

Voltage Options

230V, 460V

Warranty Coverage

All parts are warranted for one year from the original date of purchase to the original purchaser. This warranty covers the replacement of parts found to be defective in material or workmanship under normal use. Some exclusions may apply.

Warranty Exclusions

This warranty does not cover:

  • Normal wear items including abrasive wheels, belts, and bearings.
  • Damage resulting from misuse, abuse, or improper maintenance.
  • Damage from cutting inappropriate materials.
  • Modifications or alterations to the machine.
  • Damage caused by improper electrical connection or voltage supply.
  • Labor or installation costs.

This warranty is non-transferable and applies only to the original purchaser.

Return Authorization

A Return Authorization (RA) number must be obtained before returning any merchandise. Contact Customer Service at (269) 382-2050 to request authorization. Items returned without prior authorization may not be accepted.

  • Return shipping costs are the responsibility of the customer.
  • Items must be new, unused, and in the original shipping container.
  • Credit will be issued upon inspection.
  • A 10% restocking fee applies to all returns.
  • The restocking fee is waived if a replacement order is placed prior to the return.