When a pneumatic drive system needs more torque than the faster A2 Series options can provide, the Cleco A2R302M A2 Series Reversible Axial Piston Air Motor delivers 0.6 HP output at a controlled 520 RPM. Its axial piston design uses piston-driven compressed air to produce rotary motion, making it a practical choice for machinery, fixtures, and equipment where reversible operation and stall tolerance are important.
The A2R302M is configured with a 7/8" keyed spindle, rear exhaust, and a 9.1:1 gear ratio that reduces speed while increasing usable torque at the output. With 19 ft-lbs stall torque, this model is better suited than higher-speed A2 Series versions for loads that require stronger starting and holding force. Rear exhaust routes spent air away from the spindle area, helping simplify installations in machinery layouts where airflow direction matters.
Type: Reversible Axial Piston Air Motor | Series: A2 Series | Model: A2R302M | Spindle Type: Keyed | Spindle Size: 7/8" | Power: 0.6 HP / 0.45 kW | Free Speed: 520 RPM | Speed at Max HP: 255 RPM | Stall Torque: 19 ft-lbs | Gear Ratio: 9.1:1 | Air Consumption: 21.2 SCFM | Length: 12.12" | Control: Reversible | Exhaust: Rear
Features:
- Axial piston air motor construction provides smooth pneumatic rotary power for machinery and fixture-driven applications.
- Reversible operation supports clockwise and counterclockwise output rotation when paired with the proper pneumatic controls.
- 0.6 HP / 0.45 kW output gives machine builders a compact air-powered alternative to an electric motor package.
- 520 RPM free speed supports controlled rotary motion where torque is more important than high output speed.
- 19 ft-lbs stall torque helps the motor handle resistance at the driven load without electric motor burnout concerns.
- 7/8" keyed spindle provides a positive mechanical drive interface for compatible couplings, sprockets, pulleys, and driven components.
- 9.1:1 gear ratio reduces output speed while increasing torque compared with faster A2 Series motor configurations.
- Rear exhaust directs spent air away from the spindle area to support cleaner installation routing in equipment layouts.
Made in USA: 
Applications:
- Industrial automation and machinery — driving reversible mechanisms, rotating fixtures, indexing equipment, and compact pneumatic assemblies.
- Material handling systems — powering rollers, feed mechanisms, small conveyors, and take-up devices that need controlled bidirectional motion.
- Mixing and agitation equipment — supplying moderate-speed rotary power for light mixing, stirring, and process equipment drives.
- Plant maintenance and MRO — replacing or specifying an air motor in systems that experience frequent starts, stops, or stalled-load conditions.
- OEM machine building — integrating a compact pneumatic motor where air power, stall tolerance, and a keyed spindle output are preferred.
FAQs:
- Q: What is the difference between the A2R302M and a faster A2 Series air motor?
A: The A2R302M runs at 520 RPM and provides 19 ft-lbs stall torque, making it a better choice when the load needs more torque at a lower output speed. Faster models may be better for applications where speed is the primary requirement. - Q: What does reversible operation mean on this air motor?
A: Reversible operation means the motor can rotate in either direction when installed with the correct pneumatic valve arrangement. This is useful for winding, positioning, feed, and equipment-drive applications that require forward and reverse motion. - Q: What does stall torque tell me?
A: Stall torque is the torque available when the motor is stopped by load resistance. The A2R302M is rated at 19 ft-lbs stall torque, which helps buyers compare it with other A2 Series models for load-holding and starting-force requirements. - Q: How much compressed air does the A2R302M require?
A: The manufacturer lists air consumption at 21.2 SCFM. Size the compressor, FRL, hoses, and fittings so the motor receives adequate airflow during operation, especially under repeated or continuous use. - Q: What is a keyed spindle used for?
A: A keyed spindle uses a keyway to create a positive drive connection with compatible couplings, pulleys, sprockets, or other components. This helps transfer torque without relying only on friction clamping.
| SKU | Mount | Spindle Type | RPM at Max HP | Free Speed | Torque Stall | Weight | Gear Ratio | Length | Horsepower | Air Consumption | Control | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (RPM) | (RPM) | Ft-Lb | Nm | Lb | kg | in | mm | Hp | kW | (SCFM) | |||||
| A2R306M | Face Mounting | 7/8 in Keyed Spindle | 44 | 90 | 107 | 145 | 22 | 10 | 53.6-1 | 14.28 | 363 | 0.6 | 21.2 | Reversible |
| A2R305M | Face Mounting | 7/8 in Keyed Spindle | 75 | 150 | 63.0 | 85 | 22 | 10 | 31.4-1 | 14.28 | 363 | 0.6 | 21.2 | Reversible |
| A2R304M | Face Mounting | 7/8 in Keyed Spindle | 99 | 200 | 48.0 | 65 | 22 | 10 | 23.8-1 | 14.28 | 363 | 0.6 | 21.2 | Reversible |
| A2R303M | Face Mounting | 7/8 in Keyed Spindle | 169 | 345 | 28.0 | 38 | 22 | 10 | 13.9-1 | 14.28 | 363 | 0.6 | 21.2 | Reversible |
| A2R302M | Face Mounting | 7/8 in Keyed Spindle | 255 | 520 | 19.0 | 26 | 14 | 6.35 | 9.25-1 | 12.12 | 308 | 0.6 | 21.2 | Reversible |
| A2R301M | Face Mounting | 7/8 in Keyed Spindle | 575 | 1170 | 8.0 | 11 | 14 | 6.35 | 4.1-1 | 12.12 | 308 | 0.6 | 21.2 | Reversible |
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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
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
