Cleco MBW412M MB Series Radial Piston Air Motor | 5.5 HP | 270 RPM | 388 (ft-lbs) Stall Torque | Rear Exhaust

Built for high-torque rotary drive applications such as mixers, winches, conveyors, hoists, and machinery actuation, the Cleco MBW412M MB Series Radial Piston Air Motor delivers 5.5 HP of pneumatic power with a controlled 270 RPM free speed. Its radial piston design supports high torque output at lower shaft speeds, making it a practical choice when the motor must start loaded equipment or keep turning under resistance. With 388 ft-lbs of stall torque, this model provides the locked-rotor torque capacity needed for tough startup conditions, while the rear exhaust configuration helps direct exhaust air away from the work area.

The MBW412M is part of Cleco’s MB Series radial piston air motor family and is supplied with a threaded spindle for mechanical drive connection. Its 11.3:1 gear ratio reduces speed and multiplies torque for applications where controlled rotation is more important than high RPM. This model is listed without valving, allowing system designers and maintenance teams to configure air control hardware around the machine, fixture, or installation layout.

Type: Radial Piston Air Motor | Brand: Cleco | Model: MBW412M | Series: MB Series | Max Power: 5.5 HP / 4.10 kW | Free Speed: 270 RPM | RPM at Max HP: 133 RPM | Stall Torque: 388 ft-lbs | Gear Ratio: 11.3:1 | Spindle Type: 3/4" Threaded Spindle | Length: 18.12" | Air Consumption: 148 | Exhaust: Rear Exhaust | Valving: Without Valving

Features:

• Radial piston air motor configuration supports high torque output at lower operating speeds.
• 5.5 HP / 4.10 kW maximum power rating for driving larger pneumatic machinery and rotary equipment.
• 270 RPM free speed provides controlled shaft rotation for applications where torque is more important than high speed.
• 388 ft-lbs stall torque helps the motor overcome high startup resistance and loaded operating conditions.
• 11.3:1 gear ratio reduces output speed while increasing torque delivery at the spindle.
• 3/4" threaded spindle provides a mechanical connection point for compatible couplings, drive components, or machine integration.
• Rear exhaust configuration helps route discharged air away from the operator side or work zone, depending on installation layout.
• Available reverse valve kit MAB70074 and single-direction valve 90A39 are listed for the MB Series; fitting 63J11 is also required with 90A39.

Made in USA:

Applications:

• Industrial mixing systems where low-speed torque is needed to turn viscous materials or loaded agitators.
• Winch, hoist, and lifting-related drive assemblies that require pneumatic power and strong startup torque.
• Conveyor and indexing machinery where controlled rotary motion is preferred over high-speed output.
• Fixture builders and machine integrators replacing or specifying an air motor for rotary drive systems.
• Maintenance and MRO departments supporting pneumatic equipment in plants, workshops, and production environments.
• Oil, gas, marine, mining, and processing facilities where pneumatic drive systems are commonly used in place of electric motors.

FAQs:

• Q: What type of air motor is the Cleco MBW412M?
  A: The MBW412M is an MB Series radial piston air motor. Radial piston motors are commonly selected when the application calls for higher torque at lower shaft speeds.
• Q: What does stall torque mean on this air motor?
  A: Stall torque is the torque available when the motor output is stopped under load. For this model, the listed stall torque is 388 ft-lbs, which helps indicate how much resistance the motor can overcome during startup or overload conditions.
• Q: Is the MBW412M supplied with control valving?
  A: The MBW412M is listed without valving. Air control valves, reversing hardware, and related fittings should be selected separately based on the system layout and operating requirements.
• Q: What is the output speed of this model?
  A: The free speed is 270 RPM, and the listed speed at maximum horsepower is 133 RPM. Free speed is the no-load speed, while speed at maximum horsepower better reflects the motor’s loaded operating point.
• Q: Can this motor replace an electric motor?
  A: It may be suitable for pneumatic machine designs or conversions where the horsepower, torque, speed, spindle, air supply, mounting arrangement, and controls match the application. Confirm all mechanical and air-system requirements before replacing an existing motor.

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