Cleco MR70R122M Reversible Rotary Vane Air Motor | 7.5 HP | 310 RPM | 472 (ft-lbs) Stall Torque | Side Exhaust

When a driven process needs slow, controlled rotation with high breakaway capability, the Cleco MR70R122M reversible rotary vane air motor delivers 7.5 HP with a 310 RPM free speed and 472 ft-lbs of stall torque. Stall torque is the maximum torque the motor can develop before rotation stops, making this model well suited for applications where the load can spike during start-up, reversal, or process resistance. Its rotary vane design uses compressed air to spin vanes inside the motor housing, giving plant engineers a pneumatic power source for machinery where electric motors may not be preferred.

The MR70R122M is part of Cleco’s MR70 Series, a high-output rotary vane motor family with side exhaust, reversible operation, and a 1-1/4" geared keyed spindle for positive power transfer to compatible couplings, fixtures, or driven equipment. With 212 CFM air consumption and a 1" NPTF air inlet, this motor should be matched to a properly sized compressed air system capable of maintaining flow and pressure at the motor location.

Type: Reversible Rotary Vane Air Motor | Series: MR70 Series | Model: MR70R122M | Maximum Power: 7.5 HP / 5.59 kW | RPM at Max. HP: 169 RPM | Free Speed: 310 RPM | Stall Torque: 472 ft-lbs / 640 Nm | Starting Torque: 336 ft-lbs / 456 Nm | Gear Ratio: 32.5:1 | Mounting: Foot Mounting | Spindle: 1-1/4" Geared Diameter Keyed Spindle | Exhaust: Side Exhaust | Air Inlet: 1" NPTF | Air Consumption: 212 CFM / 6.00 m³/min | Weight: 65.0 lbs / 29.0 kg | Max. Overhung Load at Stall: 2560 lbs / 1161 kg | Performance Rating: 90 PSI / 620 kPa

Features:

• Rotary vane air motor construction provides pneumatic rotary power for machinery, fixtures, and process equipment.
• Reversible operation supports clockwise and counter-clockwise rotation for bidirectional drive requirements.
• 7.5 HP maximum power output supports large driven loads where compact pneumatic power is needed.
• 32.5:1 gear ratio reduces motor speed while increasing torque at the output spindle.
• Side exhaust configuration helps route exhaust air away from the driven connection and mounting base.
• 1-1/4" geared keyed spindle provides a positive mechanical drive interface for compatible couplings and equipment.
• Foot mounting configuration supports installation on machine frames, skids, and fixed equipment bases.
• Rated performance at 90 PSI helps buyers size the air supply, regulator, and piping around known operating data.

Made in USA:

Applications:

• Industrial machinery — powering air-driven equipment where pneumatic operation is preferred over electric drive.
• Mixing and agitation — rotating mixers for paint, coatings, fluids, or process materials when the torque and speed range match the load.
• Foundry operations — raising foundry copes and drags or driving related shop equipment within the motor’s rated capacity.
• Material handling and positioning — rotating turntables, fixtures, or indexing equipment requiring reversible rotary motion.
• Valve actuation and mechanical drive systems — supplying controlled pneumatic rotation for valves, mechanical hands, or universal joint power sources.
• Plant engineering and MRO — replacing or supplementing electric drive systems where air supply, stall behavior, and reversibility are practical advantages.

FAQs:

• Q: What does stall torque mean on the MR70R122M?
  A: Stall torque is the torque available at the point where the motor stops rotating under load. For this model, the rated stall torque is 472 ft-lbs / 640 Nm, which helps when evaluating start-up loads, jam conditions, or high-resistance drive applications.
• Q: How much air does this Cleco air motor require?
  A: The MR70R122M is listed at 212 CFM / 6.00 m³/min with performance rated at 90 PSI / 620 kPa. The air system should be sized to maintain that flow and pressure at the motor, allowing for hose, piping, and regulator pressure drop.
• Q: Is the MR70R122M reversible?
  A: Yes. This model is a reversible MR70 Series rotary vane air motor, allowing rotation in either direction when installed with the proper controls and air supply arrangement.
• Q: What mounting style does this model use?
  A: The MR70R122M is shown in the Cleco MR70 Series data as a foot mounting model. Foot mounting is commonly used when the motor is bolted to a frame, base plate, or machine structure.
• Q: Does this motor need lubrication?
  A: Yes. Cleco’s rotary vane motor guidance states that these motors require air line lubrication, with the lubricator mounted as close to the motor as possible for best service life.

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