Cleco MA3W407M Radial Piston Air Motor | 3 HP | 100 RPM | 588 (ft-lbs) Stall Torque | Rear Exhaust

When low-speed pneumatic rotation needs high stall force, the Cleco MA3W407M radial piston air motor gives machine builders a 3 HP drive option with 100 RPM free speed and 588 ft-lbs stall torque. A radial piston motor uses air-driven pistons arranged around a crankshaft, helping the motor produce strong starting torque and controlled rotary output for equipment that must start under load or tolerate momentary stall without electric motor burnout concerns.

This MA3 Series model is built around a geared 24.6:1 reduction ratio, reducing output speed while multiplying torque for slow-turning pneumatic drive applications. Its 48 RPM speed at maximum horsepower helps integrators size the motor around its effective working point rather than unloaded free speed alone. With rear exhaust, no valving, a 5/8" threaded spindle, and 95 SCFM air consumption, the MA3W407M is best matched to equipment where the control valve, air preparation, coupling, and mounting layout are specified as part of the machine design.

Type: Radial Piston Air Motor | Series: MA3 Series | SKU: MA3W407M | Max Power: 3 HP / 2.24 kW | Free Speed: 100 RPM | Speed at Max HP: 48 RPM | Stall Torque: 588 ft-lbs | Gear Ratio: 24.6:1 | Spindle Type: 5/8" Threaded Spindle | Length: 16.56" | Air Consumption: 95 SCFM | Control: No Valving | Exhaust: Rear Exhaust

Features:

• Radial piston construction supplies strong low-speed torque for pneumatic machinery that must begin rotation under load.
• 3 HP / 2.24 kW maximum power supports driven equipment where compressed air is the preferred power source.
• 100 RPM free speed is suited to slower shaft-drive applications that do not require high output speed.
• 588 ft-lbs stall torque provides high holding and starting force when the motor is loaded to a stop.
• 24.6:1 gear ratio reduces output speed while increasing torque at the spindle.
• 5/8" threaded spindle gives integrators a defined mechanical connection point for compatible couplings or driven components.
• No-valving configuration allows the external air control valve to be selected around the machine’s required start, stop, and directional control setup.
• Rear exhaust helps route discharge air away from the working end of the motor for cleaner equipment integration.

Made in USA:

Applications:

• Mixing and agitation equipment — turning shafts, paddles, or rotary mechanisms where low speed and high starting torque are required.
• Winches and specialty drive systems — supplying pneumatic rotary power for slow-speed pulling, positioning, or winding functions.
• Industrial machinery and OEM builds — integrating an air-powered motor into fixtures, skids, and custom equipment where electrical drive is not preferred.
• Conveyor and indexing systems — powering intermittent rotation, positioning, or transfer mechanisms in compressed-air-equipped facilities.
• Plant maintenance and MRO retrofits — replacing or adapting drive systems where the available air supply, torque demand, and motor configuration match the application.

FAQs:

• Q: What type of work is the MA3W407M best suited for?
  A: This model is best suited for low-speed, high-torque pneumatic drive applications. The 100 RPM free speed and 588 ft-lbs stall torque make it more appropriate for machinery, mixers, winches, and slow-turning equipment than for high-speed rotary tools.
• Q: What does stall torque mean on an air motor?
  A: Stall torque is the torque available when the motor is stopped under load. Air motors can typically tolerate stalling better than electric motors, but the system still needs proper controls, lubrication, and air preparation.
• Q: Is the 100 RPM rating the loaded operating speed?
  A: No. Free speed is the unloaded speed. The speed at maximum horsepower for this model is 48 RPM, which is a better reference point when estimating working performance under load.
• Q: Does this Cleco air motor include built-in valving?
  A: No. The MA3W407M is listed with no valving, so an external control valve must be selected separately based on the machine’s start, stop, and control requirements.
• Q: What should be checked before using this motor as an electric motor replacement?
  A: Confirm horsepower, working speed, stall torque, spindle connection, gear ratio, air consumption, mounting layout, exhaust direction, and control requirements. The compressed-air system must be able to support the motor’s 95 SCFM air demand during loaded operation.

Looking for more information about Cleco Air Motor? Click here to view the Catalog

Need help selecting the correct Cleco Air Motors for your application? Please call (800) 608-5210 or email info@intlairtool.com