Built for milling, indexing, conveying, and other low-speed industrial drive applications, the Ingersoll Rand 7533-2-B Milling Air Motor delivers 0.25 HP at a 550 RPM free speed to provide smooth, dependable pneumatic power where controlled rotational speed is essential. As a pneumatic air motor (using compressed air instead of electricity), it can operate continuously without overheating and can safely stall under load without damaging the motor, making it well suited for demanding manufacturing and automation environments.
The 7533-2-B is designed for production equipment requiring reliable low-speed output and consistent torque. Its compact configuration allows easy integration into OEM machinery, fixtures, conveyors, and specialized industrial equipment where electric motors may be unsuitable due to moisture, dust, or hazardous operating conditions. The pneumatic design also provides smooth variable speed control by regulating the compressed air supply, giving operators greater flexibility for precision process control.
Type: Milling Air Motor | Model: 7533-2-B | Power: 0.25 HP | Free Speed: 550 RPM | Power Source: Pneumatic
Features:
- 0.25 HP pneumatic motor provides dependable power for continuous industrial operation.
- 550 RPM free speed delivers controlled low-speed rotation for milling and drive applications.
- Pneumatic design allows the motor to stall under load without damage.
- Variable speed can be achieved by regulating the compressed air supply.
- Compact design simplifies installation into OEM machinery and custom equipment.
- Suitable for continuous-duty applications where electric motors may overheat.
- Operates without generating electrical sparks, making it appropriate for installations where pneumatic power is preferred.
- Designed for dependable performance in manufacturing, automation, and industrial processing equipment.
Made in USA: ![]()
Applications:
- Driving milling heads and specialized machining equipment requiring controlled low-speed rotation.
- Powering conveyors, indexing tables, and automated production machinery.
- Operating industrial mixers, feeders, and process equipment using pneumatic power.
- OEM equipment integration where compact motor size and continuous-duty operation are important.
- Manufacturing facilities operating in dusty, humid, or electrically sensitive environments.
FAQs:
- Q: What advantages does an air motor offer over an electric motor?
A: Pneumatic air motors can operate continuously without overheating, safely stall under load without damage, and provide variable speed control by adjusting the compressed air supply. - Q: What types of equipment is the 7533-2-B commonly used on?
A: It is commonly integrated into milling equipment, conveyors, indexing systems, automated production machinery, and custom OEM equipment requiring dependable low-speed rotary power. - Q: Is 550 RPM considered a low-speed air motor?
A: Yes. The 550 RPM free speed is suited for applications that prioritize controlled rotational speed and torque over high-speed operation. - Q: Can this motor operate continuously?
A: Yes. Pneumatic air motors are well suited for continuous-duty industrial applications when supplied with properly regulated, clean, lubricated compressed air.

| 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 - 0.25 HP | |||||||||||||
| 7533-2-B | 1/4″ Maximum Collet Capacity | 550 | 325 | 8.2 | 10.6 | 4.0 | 5.1 | 18.1 | 8.5 | 75 | 2.07 | 0.93 | Double |
| 7534-2-B | 900 | 550 | 5.0 | 6.4 | 2.4 | 3.2 | 18.1 | 8.5 | 75 | 2.07 | 0.93 | Double | |
| 7535-2-B | 2,700 | 1,600 | 1.75 | 2.2 | 0.82 | 1.1 | 18.1 | 8.5 | 75 | 1.77 | 0.80 | Single | |
| 7536-2-B | 4,500 | 2,700 | 1.05 | 1.3 | 0.49 | 0.60 | 18.1 | 8.5 | 75 | 1.77 | 0.80 | Single | |
| 7537-2-B | 20,000 | 12,000 | 0.22 | 0.30 | 0.11 | 0.10 | 18.1 | 8.5 | 75 | 1.77 | 0.80 | Single | |
Looking for more information about Ingersoll Rand Milling Motor? Click here to view the Catalog
For help selecting the correct Ingersoll Rand Milling Motors for your assembly application, 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
