Cleco MMW423M Radial Piston Air Motor | 15 HP | 400 RPM | 715 (ft-lbs) Stall Torque | Rear Exhaust

Built for high-torque machinery drives, mixers, winches, and other pneumatic power transmission applications, the Cleco MMW423M MM Series Radial Piston Air Motor delivers 15 HP output with a 400 RPM free speed for equipment that needs substantial turning force at controlled speed. Its radial piston configuration uses pistons arranged around the crank mechanism to produce strong low-speed torque, making it a practical choice where electric motors may be less desirable due to stall conditions, variable air control, or pneumatic system integration.

With 715 ft-lbs of stall torque, a 5.2-1 gear ratio, and 332 SCFM air consumption, the MMW423M is suited for applications where the motor must keep load-moving torque available as resistance increases. The 1-1/4" threaded spindle supports mechanical connection to compatible driven components, while the rear exhaust arrangement routes spent air away from the drive side of the installation. This model is supplied with no valving, allowing system builders to configure external control based on the machine or process requirements.

Type: Air Motor | Series: MM Series | Motor Configuration: Radial Piston | Power: 15 HP / 11.19 kW | Spindle Type: Threaded | Spindle: 1-1/4" | Free Speed: 400 RPM | RPM at Max HP: 194 | Stall Torque: 715 ft-lbs | Gear Ratio: 5.2-1 | Air Consumption: 332 SCFM | Control: No Valving | Exhaust: Rear | Mount: Foot Mounting | Air Inlet: 1-1/4" NPTF | Length: 20.88"

Features:

• MM Series radial piston air motor configuration provides high torque output for machinery and process equipment drives.
• 15 HP / 11.19 kW maximum power rating supports demanding pneumatic drive applications where high mechanical output is required.
• 400 RPM free speed with 194 RPM at maximum horsepower gives buyers a controlled-speed option for torque-focused equipment builds.
• 715 ft-lbs stall torque helps the motor continue delivering turning force as the driven load approaches a stalled condition.
• 1-1/4" threaded spindle allows connection to compatible couplings, shafts, and driven components selected by the machine builder.
• No-valving configuration gives integrators flexibility to specify external directional or single-direction control components.
• Rear exhaust routes spent air away from the front mounting and spindle area for cleaner equipment integration.
• Available reverse valve kit MAK70477 and single direction valve 90A39 are listed by Cleco for MM Series radial piston motors; single direction valve use also requires fitting 63J11.

Made in USA:

Applications:

• Industrial machinery drives — powering torque-demanding equipment where pneumatic operation is preferred over electric drive systems.
• Mixing and agitation equipment — driving mixers that require steady turning force at moderate rotational speed.
• Winches, hoists, and positioning systems — supplying high stall torque for controlled movement of mechanical loads when properly integrated by the equipment builder.
• Oil, gas, and process environments — supporting air-powered drive systems where compressed air infrastructure is already available.
• Manufacturing and plant MRO — replacing or specifying pneumatic motors for conveyors, fixtures, and special-purpose machinery.

FAQs:

• Q: What does “no valving” mean on the Cleco MMW423M?
  A: It means the motor is supplied without built-in control valving. Directional or single-direction control must be handled with compatible external valves and system plumbing.
• Q: What is stall torque?
  A: Stall torque is the turning force available when the motor is slowed to a stopped condition under load. For the MMW423M, the listed stall torque is 715 ft-lbs.
• Q: How much air does this motor require?
  A: The listed air consumption is 332 SCFM, so this motor requires a large compressed air system capable of supporting high continuous flow. Confirm available compressor capacity, piping size, and pressure stability before installation.
• Q: Can this motor replace an electric motor?
  A: It may be used in applications where a pneumatic motor is preferred, but replacement depends on mounting, spindle connection, speed, torque, duty cycle, controls, and available air supply. A qualified integrator should verify the mechanical and pneumatic requirements before substitution.
• Q: What does the rear exhaust configuration do?
  A: Rear exhaust directs spent air toward the rear of the motor rather than toward the spindle side. This can simplify installation layouts where the drive end needs to stay clear of exhaust flow.

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