Cleco MBW411M MB Series Radial Piston Air Motor | 5.5 HP | 150 RPM | 700 (ft-lbs) Stall Torque | Rear Exhaust

For equipment that needs slow, forceful rotation from a compressed-air power source, the Cleco MBW411M MB Series Radial Piston Air Motor delivers 5.5 HP output at a 150 RPM free speed. This combination is well suited for machine drives where torque, controlled shaft speed, and pneumatic stall behavior matter more than high-speed rotation. Its radial piston design uses pistons arranged around the drive centerline to produce strong turning force, making it useful for mixers, lift-assist equipment, conveyors, rotary indexing mechanisms, and other powered fixtures.

The MBW411M provides 700 ft-lbs of stall torque, helping the motor start resistant loads and tolerate temporary stopped-load conditions. At maximum horsepower, the motor operates at 74 RPM, giving integrators a practical operating point for low-speed machinery. This model uses foot mounting, a 1 1/2" keyed spindle, a 20.4:1 gear ratio, and no valving, allowing the control package to be specified separately around the machine’s air circuit and operating requirements.

Type: Radial Piston Air Motor | Series: MB Series | Model: MBW411M | Mount: Foot Mounting | Spindle Type: 1 1/2" Keyed | Max Power: 5.5 HP / 4.10 kW | RPM at Max HP: 74 RPM | Free Speed: 150 RPM | Stall Torque: 700 ft-lbs / 949 Nm | Weight: 148 lbs / 67.1 kg | Gear Ratio: 20.4:1 | Length: 18.12" / 460 mm | Air Consumption: 154 SCFM | Control: No Valving | Air Inlet: 1" NPTF | Performance Rating: 90 PSI / 620 kPa

Features:

• Radial piston motor layout supplies high torque at low rotational speed for machine-drive applications.
• 5.5 HP maximum power supports pneumatic equipment where compressed air is the preferred energy source.
• 150 RPM free speed helps keep driven shafts, drums, and rotary fixtures under controlled speed.
• 700 ft-lbs stall torque provides strong starting force and stopped-load tolerance.
• 20.4:1 gear ratio increases output torque while reducing output speed for lower-speed loads.
• Foot mounting supports fixed installation on machinery bases, frames, and equipment skids.
• 1 1/2" keyed spindle provides a positive mechanical connection to compatible couplings or driven components.
• No-valving configuration allows the air control method to be selected separately for the application.

Made in USA:

Applications:

• Mixing and agitation equipment — turning shafts where low speed and high torque are required.
• Industrial machinery builds — powering indexing tables, rotary fixtures, conveyors, and feed mechanisms.
• Winch and lift-assist systems — supplying pneumatic rotation for pulling, positioning, or controlled movement when properly guarded and integrated.
• Packaging and production equipment — adding air-powered rotary motion to machines already built around pneumatic controls.
• Marine, mining, and process equipment — supporting air-motor installations where electric drive may not be the preferred solution.

FAQs:

• Q: What does “no valving” mean on the Cleco MBW411M?
  A: No valving means the motor is supplied without an integral directional valve. The installer must provide the appropriate external air controls, valves, and plumbing for the machine.
• Q: Is this the same as a reversible-valving model?
  A: No. The MBW411M is listed with no valving. If the application requires built-in reversible operation, compare it against the reversible-valving MB Series model with matching speed and torque requirements.
• Q: What air supply does the MBW411M need?
  A: The listed air consumption is 154 SCFM, and Cleco rates performance at 90 PSI / 620 kPa. The air system should be sized to maintain adequate pressure and flow at the motor after losses through hoses, fittings, filters, regulators, and valves.
• Q: Why choose a radial piston air motor for low-speed equipment?
  A: A radial piston air motor is useful when the application needs strong torque at reduced speed. It can also tolerate stall conditions better than many electric motors, provided the air system and controls are correctly specified.
• Q: What should be checked before replacing another motor with the MBW411M?
  A: Verify the required torque, operating speed, spindle connection, mounting layout, air flow, air pressure, control method, and allowable overhung load. The driven equipment must also provide sufficient load to prevent overspeed.

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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