Cleco A6R333M Reversible Axial Piston Air Motor | 1.9 HP | 170 RPM | 223 (ft-lbs) Stall Torque | Rear Exhaust

When a machine build needs slow, controlled rotary power with high torque reserve, the Cleco A6R333M delivers 1.9 HP through an axial piston air motor platform. Axial piston design means the motor uses piston-driven air power rather than an electric armature, making it a practical choice for equipment where pneumatic power, reversible rotation, and stall tolerance are preferred. With a 170 RPM free speed and 223 ft-lbs stall torque, this model is suited for low-speed drive tasks where controlled rotation matters more than high-speed output.

The A6R333M is part of Cleco’s A6 Series reversible axial piston air motors and uses a 20.3:1 gear ratio to convert air motor power into higher output torque. Rear exhaust directs spent air away from the mounting face, while the keyed spindle provides a positive mechanical drive connection for compatible couplings, fixtures, and machine components. This makes the motor useful for custom machinery, mixers, indexing equipment, winch-style drives, and other pneumatic-powered systems requiring dependable bidirectional rotation.

Type: Reversible Axial Piston Air Motor | Series: A6 Series | Model: A6R333M | Max Power: 1.9 HP / 1.42 kW | RPM at Max HP: 89 RPM | Free Speed: 170 RPM | Stall Torque: 223 ft-lbs / 302 Nm | Starting Torque: 163 ft-lbs / 221 Nm | Gear Ratio: 20.3:1 | Mounting: Face Mounting | Spindle: 1-1/8" Diameter Keyed Spindle | Exhaust: Rear | Air Inlet: 3/8" NPTF | Air Consumption: 62 CFM / 1.76 m³/min | Rated Air Pressure: 90 PSI / 620 kPa | Weight: 43 lbs / 19.5 kg | Max Overhung Load @ Stall: 1000 lbs / 454 kg

Features:

• Axial piston air motor construction provides high torque at lower rotational speeds for machine-drive and fixture-drive applications.
• Reversible operation supports clockwise and counterclockwise rotation where the driven process requires directional control.
• 170 RPM free speed gives controlled output rotation for equipment that does not require high-speed motor operation.
• 223 ft-lbs stall torque helps the motor continue applying force when load increases during mixing, lifting, indexing, or drive tasks.
• 20.3:1 gear ratio increases output torque while reducing motor speed for low-speed power transmission.
• Rear exhaust routes discharge air away from the working face to simplify installation in mounted equipment.
• Keyed spindle provides a positive mechanical connection for compatible couplings, sprockets, pulleys, and custom drive components.
• Face mounting supports integration into fixtures, machine frames, and OEM-style pneumatic drive assemblies.

Made in USA:

Applications:

• Industrial automation and machinery — driving indexing stations, rotary fixtures, and pneumatic-powered production equipment.
• Mixing and agitation systems — providing slow, high-torque rotation for compatible mixers and process equipment.
• Material handling equipment — powering winch-style drives, lift-assist mechanisms, and controlled movement systems where air power is preferred.
• OEM equipment builds — integrating into custom machines that require reversible pneumatic rotation without an electric motor.
• Plant maintenance and MRO — replacing or supporting air-powered drive assemblies in existing machinery and specialized shop equipment.

FAQs:

• Q: What does stall torque mean on the Cleco A6R333M?
  A: Stall torque is the torque available when the motor is loaded to the point that rotation stops. For this model, the stall torque is 223 ft-lbs, which helps describe the motor’s maximum force capacity under load.
• Q: Can this air motor replace an electric motor?
  A: It can be used in some applications where pneumatic power, reversible operation, and stall tolerance are preferred. Mounting, speed, torque, spindle connection, air supply, and duty requirements must all be checked before replacing an electric motor.
• Q: What air supply is required for this motor?
  A: The A6R333M is rated at 90 PSI and uses 62 CFM of air. The compressor and air line system should be sized to maintain the required pressure and flow during operation.
• Q: What is the difference between free speed and RPM at max horsepower?
  A: Free speed is the no-load speed of the motor. RPM at max horsepower is the speed where the motor produces its rated power under load, which is the more useful value when evaluating working performance.
• Q: Does the A6R333M include a keyed spindle?
  A: Yes, the catalog identifies this model as a face-mounting air motor with a keyed spindle. Confirm coupling and driven-component dimensions before installation.

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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