Cleco A8R338M A8 Series Reversible Axial Piston Air Motor | 2.7 HP | 125 RPM | 385 (ft-lbs) Stall Torque | Rear Exhaust

When low-speed torque is the priority, the Cleco A8R338M A8 Series Reversible Axial Piston Air Motor delivers controlled rotary power for fixtures, machinery drives, positioning systems, and other pneumatic power transmission applications. Its 2.7 HP axial piston motor configuration provides strong output in a compact air-powered package, while the 125 RPM free speed supports slower, controlled rotation where excessive speed can damage the load or process. With 385 ft-lbs of stall torque, this motor supplies substantial holding and turning force at stall, helping it drive high-load equipment that requires torque more than speed.

The A8R338M is a reversible model, meaning rotation can be controlled in both forward and reverse directions when properly valved. Its rear exhaust routes spent air away from the work area, and the 1-3/8" keyed spindle provides a mechanical drive interface for coupling the motor to compatible shafts, pulleys, sprockets, or customer-built assemblies. As an axial piston air motor, it is well suited for installations where pneumatic power is preferred over electric drive systems, particularly when variable speed control, stall tolerance, and directional control are important.

Type: Reversible Axial Piston Air Motor | Series: A8 Series | Model: A8R338M | Power: 2.7 HP | Free Speed: 125 RPM | RPM at Max HP: 65 RPM | Stall Torque: 385 ft-lbs | Starting Torque: 285 ft-lbs | Spindle Type: Keyed | Spindle Size: 1-3/8" | Gear Ratio: 20.3:1 | Air Consumption: 112 SCFM | Air Inlet: 1/2" NPTF | Exhaust: Rear | Control: Reversible

Features:

• Axial piston air motor design provides high torque output at lower operating speeds for powered machinery and fixture applications.
• Reversible operation allows the motor to run in forward or reverse when used with the proper directional air control valve.
• Rear exhaust helps direct discharge air away from the immediate work zone and connected drive components.
• 1-3/8" keyed spindle provides a positive drive connection for compatible couplings, sprockets, pulleys, or custom machine interfaces.
• 20.3:1 gear ratio reduces output speed while increasing usable torque for slower, higher-load applications.
• 385 ft-lbs stall torque supports high-load rotation and controlled stopping under resistance.
• Air-powered operation can tolerate stall conditions better than many electric drive arrangements when the motor is properly applied and supplied.

Made in USA:

Applications:

• Industrial machinery drives — powering slow-speed rotary mechanisms, indexing equipment, and mechanical drive assemblies.
• Fixture and tooling systems — adding reversible pneumatic motion to custom production fixtures, clamps, or positioning devices.
• Conveyor and material handling equipment — driving controlled movement where pneumatic power and stall capability are useful.
• Mixing and agitation equipment — providing lower-speed torque for compatible mixers or process equipment when matched to the load requirement.
• Plant maintenance and MRO — replacing or supporting air-powered drive systems in machinery where the mounting, spindle, torque, and air supply match the application.

FAQs:

• Q: What does stall torque mean on the Cleco A8R338M?
  A: Stall torque is the maximum torque the motor can develop when the output shaft is stopped under load. For this model, the stall torque is 385 ft-lbs, which is important for applications that must overcome resistance or hold load at low speed.
• Q: Is this motor reversible?
  A: Yes. The A8R338M is a reversible axial piston air motor, so it can operate in forward and reverse when connected to the appropriate air control valve and pneumatic circuit.
• Q: What air supply is required?
  A: This motor uses a 1/2" NPTF air inlet and has an air consumption rating of 112 SCFM. The compressor and air line system should be sized to deliver adequate flow at the required operating pressure for the application.
• Q: What is the difference between free speed and RPM at maximum horsepower?
  A: Free speed is the unloaded speed of the motor, listed here as 125 RPM. RPM at maximum horsepower is the operating point where the motor produces its rated power output, listed here as 65 RPM.
• Q: Can this replace an electric motor?
  A: It may be used as a pneumatic drive alternative when the torque, speed, spindle, mounting, air consumption, and control requirements match the machine. A qualified technician should verify load, duty cycle, guarding, and valve selection before installation.

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