Ingersoll Rand 8231-1B Reversible Air Power Motor is designed to provide dependable high-speed pneumatic rotary power for industrial applications requiring bidirectional operation. Featuring a planetary gear system with single gear reduction, this air power motor delivers 0.50 HP and operates at a free speed of 18,000 RPM. Its reversible configuration allows the motor to operate in either rotational direction, making it well suited for OEM machinery, automated assembly equipment, indexing systems, and other pneumatic applications where forward and reverse operation is required.
The 8231-1B develops 0.52 lb-ft of stall torque, representing the maximum torque produced when the output shaft is prevented from rotating. The planetary gear arrangement provides efficient power transmission while the single gear reduction maintains high operating speed, making this motor suitable for precision industrial equipment requiring rapid bidirectional rotary motion.
Type: Air Power Motor | Model: 8231-1B | Rotation: Reversible | Gear Type: Planetary Gear | Gear Reduction: Single | Power: 0.50 HP | Speed: 18,000 RPM | Stall Torque: 0.52 lb-ft
Features:
- Air-powered motor converts compressed air into dependable rotary power for industrial equipment.
- Reversible operation allows rotation in both clockwise and counterclockwise directions.
- Planetary gear assembly provides efficient power transmission within a compact design.
- Single gear reduction delivers an effective balance between high rotational speed and reliable torque output.
- 0.50 HP output provides consistent pneumatic performance for compatible industrial machinery.
- 18,000 RPM free speed is suitable for high-speed pneumatic drive applications requiring bidirectional operation.
- 0.52 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.
- Industrial automation systems requiring bidirectional rotation.
- Processing machinery utilizing planetary geared air motors.
- Replacement installations where the published motor specifications match the original equipment.
FAQs:
- Q: Is the Ingersoll Rand 8231-1B 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 8231-1B features a planetary gear system with single gear reduction. - Q: What is the rated operating speed?
A: The manufacturer specifies a free speed of 18,000 RPM. - Q: What does the 0.52 lb-ft stall torque specification indicate?
A: Stall torque is the maximum torque generated when the output shaft is prevented from rotating. It is intended as a performance reference rather than a continuous operating value. - Q: What should be verified before replacing an existing 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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