Ingersoll Rand 8231-2B Reversible Air Power Motor is engineered to provide dependable pneumatic rotary power for industrial applications requiring moderate operating speeds and bidirectional operation. Featuring a planetary gear system with single gear reduction, this air power motor is rated at 0.50 HP and operates at a free speed of 5,300 RPM. Its reversible configuration enables clockwise and counterclockwise rotation, making it well suited for OEM machinery, automated assembly equipment, indexing systems, packaging machinery, and other industrial applications where directional flexibility is essential.
The 8231-2B develops 1.70 lb-ft of stall torque, representing the maximum torque generated when the output shaft is prevented from rotating. The planetary gear arrangement provides efficient power transfer while the single gear reduction delivers a practical balance between rotational speed and output torque for a wide variety of pneumatic drive applications.
Type: Air Power Motor | Model: 8231-2B | Rotation: Reversible | Gear Type: Planetary Gear | Gear Reduction: Single | Power: 0.50 HP | Speed: 5,300 RPM | Stall Torque: 1.70 lb-ft
Features:
- Air-powered motor converts compressed air into reliable rotary power for industrial machinery.
- Reversible operation allows the motor to rotate in both clockwise and counterclockwise directions.
- Planetary gear assembly provides efficient power transmission in a compact design.
- Single gear reduction delivers an effective balance of operating speed and output torque.
- 0.50 HP output provides dependable pneumatic performance for compatible industrial equipment.
- 5,300 RPM free speed is suitable for applications requiring moderate speed with directional flexibility.
- 1.70 lb-ft stall torque provides a manufacturer-published reference for evaluating maximum loading conditions.
Made in USA: 
Applications:
- OEM machinery requiring reversible pneumatic rotary power.
- Automated assembly and indexing equipment.
- Packaging and production systems requiring bidirectional operation.
- Industrial automation utilizing planetary geared air motors.
- Replacement installations where the published motor specifications match the original equipment.
FAQs:
- Q: Is the Ingersoll Rand 8231-2B reversible?
A: Yes. This model is designed to operate in both clockwise and counterclockwise directions. - Q: What type of gearing does this motor use?
A: The 8231-2B utilizes a planetary gear system with single gear reduction. - Q: What is the rated operating speed?
A: The manufacturer specifies a free speed of 5,300 RPM. - Q: What does the 1.70 lb-ft stall torque specification represent?
A: Stall torque is the maximum torque generated when the output shaft is prevented from rotating. It is intended as a performance reference and should not be interpreted as a continuous operating value. - Q: What should be verified before installing this motor?
A: Confirm horsepower, operating speed, rotation direction, gear configuration, shaft dimensions, mounting arrangement, and compressed-air requirements using the Ingersoll Rand Air Motor Catalog before installation.
| SKU | Spindle | R.P.M. | Torque | Air Consumption at Free Speed | Sound Level at Free Speed | Weight | Gear Reduction | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Free Speed | Load Speed at Max. Hp | Stall | Output at Max. Hp | ||||||||||
| lb-ft | Nm | lb-ft | Nm | SCFM | L/s | dB(A) | lbs | kg | |||||
| NON-REVERSIBLE - 0.60 HP | |||||||||||||
| 8230-1A | 3/8" Keyed | 19,000 | 9,800 | 0.70 | 0.9 | 0.32 | 0.4 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8230-2A | 3/8" Keyed | 5,700 | 2,900 | 2.5 | 2.9 | 1.10 | 1.5 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8230-3A | 3/8" Keyed | 3,500 | 1,750 | 3.50 | 4.7 | 1.80 | 2.4 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8230-4A | 3/8" Keyed | 2,800 | 1,400 | 4.50 | 6.1 | 2.20 | 3.0 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8230-5A | 3/8" Keyed | 1,650 | 840 | 7.50 | 10.2 | 3.80 | 5.1 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8230-6A | 3/8" Keyed | 1,000 | 500 | 12.00 | 16.3 | 6.20 | 8.4 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8230-7A | 3/8" Keyed | 800 | 390 | 14.80 | 20.0 | 8.00 | 10.8 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8230-8A | 3/8" Keyed | 600 | 315 | 19.60 | 26.5 | 10.00 | 13.5 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8230-9A | 3/8" Keyed | 500 | 250 | 24.00 | 32.5 | 12.50 | 16.9 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8229-1A | 3/8"-24 Th’d. | 19,000 | 9,800 | .70 | 0.9 | 0.32 | 0.4 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8229-2A | 3/8"-24 Th’d. | 5,700 | 2,900 | 2.15 | 2.9 | 1.10 | 1.5 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8229-3A | 3/8"-24 Th’d. | 3,500 | 1,750 | 3.50 | 4.7 | 1.80 | 2.4 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8229-4A | 3/8"-24 Th’d. | 2,800 | 1,400 | 4.50 | 6.1 | 2.20 | 3.0 | 41 | 19.3 | 80 | 2.45 | 1.10 | Single |
| 8229-5A | 3/8"-24 Th’d. | 1,650 | 840 | 7.50 | 10.2 | 3.80 | 5.1 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8229-6A | 3/8"-24 Th’d. | 1,000 | 500 | 12.00 | 16.3 | 6.20 | 8.4 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8229-7A | 3/8"-24 Th’d. | 800 | 390 | 14.80 | 20.0 | 8.00 | 10.8 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8229-8A | 3/8"-24 Th’d. | 600 | 315 | 19.60 | 26.5 | 10.00 | 13.5 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| 8229-9A | 3/8"-24 Th’d. | 500 | 250 | 24.00 | 32.5 | 12.50 | 16.9 | 41 | 19.3 | 80 | 2.98 | 1.34 | Double |
| REVERSIBLE - 0.50 HP | |||||||||||||
| 8231-1B | 3/8" Keyed | 18,000 | 9,200 | 0.52 | 0.7 | 0.28 | 0.4 | 32 | 15.1 | 80* | 2.45 | 1.10 | Single |
| 8231-2B | 3/8" Keyed | 5,300 | 2,600 | 1.70 | 2.3 | 1.00 | 1.3 | 32 | 15.1 | 80* | 2.45 | 1.10 | Single |
| 8231-3B | 3/8" Keyed | 3,200 | 1,550 | 2.90 | 3.9 | 1.70 | 2.3 | 32 | 15.1 | 80* | 2.45 | 1.10 | Single |
| 8231-4B | 3/8" Keyed | 2,600 | 1,300 | 3.50 | 4.7 | 2.00 | 2.7 | 32 | 15.1 | 80* | 2.45 | 1.10 | Single |
| 8231-5B | 3/8" Keyed | 1,500 | 780 | 5.90 | 8.0 | 3.50 | 4.7 | 32 | 15.1 | 80* | 2.98 | 1.34 | Double |
| 8231-6B | 3/8" Keyed | 950 | 480 | 9.50 | 12.9 | 5.50 | 7.4 | 32 | 15.1 | 80* | 2.98 | 1.34 | Double |
| 8231-7B | 3/8" Keyed | 750 | 380 | 11.80 | 16.0 | 7.00 | 9.5 | 32 | 15.1 | 80* | 2.98 | 1.34 | Double |
| 8231-8B | 3/8" Keyed | 575 | 290 | 15.50 | 21.0 | 9.00 | 12.2 | 32 | 15.1 | 80* | 2.98 | 1.34 | Double |
| 8231-9B | 3/8" Keyed | 475 | 240 | 19.40 | 26.2 | 11.00 | 14.9 | 32 | 15.1 | 80* | 2.98 | 1.34 | Double |
Looking for more information about Ingersoll Rand Air Motor? Click here to view the Catalog
For help selecting the correct Ingersoll Rand Air Motors for your assembly application, call (800) 608-5210 or email info@intlairtool.com
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