Cleco MKS392M MK Series Radial Piston Air Motor | 11 HP | 135 RPM | 1654 (ft-lbs) Stall Torque | Rear Exhaust

When a drive system calls for maximum turning force at very low output speed, the Cleco MKS392M MK Series radial piston air motor delivers 11 HP of maximum power with a 135 RPM free speed. Radial piston motors use pistons arranged around the crank to produce high torque at lower speeds, making this style well suited for mixers, winches, winding equipment, conveyors, and other machinery where torque matters more than high rotational speed. With 1654 ft-lbs of stall torque, the MKS392M is one of the high-torque models in the MK Series range, giving machine builders and maintenance teams strong pneumatic output for load-intensive drive applications.

The MKS392M is a geared, single-direction MK Series motor with a 14.2:1 gear ratio, 69 RPM at maximum horsepower, and 1021 ft-lbs of starting torque. Starting torque is the force available as the motor begins turning from rest, which is especially important for equipment that must start under load. Cleco lists 293 CFM air consumption and a 1-1/4" NPTF air inlet, so the air supply, valves, fittings, and FRL must be sized for high-flow operation at the rated 90 PSI pressure.

Type: Radial Piston Air Motor | Series: MK Series | Model: MKS392M | Maximum Power: 11 HP / 8.20 kW | Valving: Single-Direction | Exhaust: Rear Exhaust | RPM at Max HP: 69 RPM | Free Speed: 135 RPM | Stall Torque: 1654 ft-lbs / 2243 Nm | Starting Torque: 1021 ft-lbs / 1384 Nm | Weight: 225 lbs / 102.1 kg | Air Consumption: 293 CFM / 8.30 m³/min | Gear Ratio: 14.2:1 | Max Overhung Load at Stall: 2800 lbs / 1270 kg | Air Inlet: 1-1/4" NPTF | Rated Air Pressure: 90 PSI / 620 kPa

Features:

• Radial piston motor construction provides high torque at low speed for machinery that needs strong turning force rather than high RPM.
• 11 HP maximum power supports large pneumatic drive applications when matched with a properly sized compressed air system.
• Single-direction valving is suited to equipment that runs in one rotational direction without routine reversing requirements.
• 1654 ft-lbs stall torque gives the motor strong overload capability when the driven system is selected and guarded correctly.
• 1021 ft-lbs starting torque helps the motor begin rotation under load in machinery such as mixers, reels, winches, and indexing drives.
• 14.2:1 gear ratio reduces output speed while increasing usable torque for low-speed, high-force pneumatic drive applications.
• 1-1/4" NPTF air inlet and 293 CFM air consumption reflect the high-flow requirements of this 11 HP MK Series motor.

Made in USA:

Applications:

• Mixers and agitators — turning viscous materials, process batches, and industrial blending equipment at controlled low speed.
• Winches and winding systems — powering single-direction pull, spool, reel, or take-up mechanisms where high stall torque is required.
• Conveyors and indexing machinery — driving heavy load-transfer systems, rotating tables, and production equipment with pneumatic power.
• Plant maintenance and MRO — replacing or supporting mechanical drive systems where air-powered stall tolerance is valuable.
• Oil, gas, marine, and mining equipment — supplying low-speed pneumatic drive power in rugged environments where compressed air is already available.

FAQs:

• Q: What does single-direction valving mean on the Cleco MKS392M?
  A: Single-direction valving means the motor is configured to run in one rotational direction. For applications that require routine reversing, compare the appropriate MKR Series reversible-valving model before ordering.
• Q: What is the difference between stall torque and starting torque?
  A: Stall torque is the maximum torque available when the motor is stopped under load, listed at 1654 ft-lbs for this model. Starting torque is the torque available as the motor begins turning from rest, listed at 1021 ft-lbs.
• Q: How large of an air system is needed for this air motor?
  A: Cleco lists air consumption at 293 CFM with performance rated at 90 PSI. The compressor, receiver capacity, piping, valves, hose, and FRL should all be sized to maintain adequate airflow without excessive pressure drop.
• Q: Is the 135 RPM rating the loaded speed?
  A: No. The 135 RPM value is free speed, which is the no-load speed. The motor develops maximum horsepower at 69 RPM under load.
• Q: Why choose this model instead of a higher-speed MK Series motor?
  A: Choose the MKS392M when the application needs low speed and maximum torque. Higher-speed MK Series models are better for applications where rotational speed is more important than stall torque.

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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