Ingersoll Rand 7541-B Non-Reversible Air Power Motor provides pneumatic rotary output for machinery requiring a higher-speed, single-direction drive with gear reduction. Rated at 0.25 HP and 4,500 RPM, this model uses a single gear reduction to deliver its specified output characteristics. Its non-reversible configuration is intended for equipment where the driven mechanism operates continuously in one rotational direction rather than requiring forward-and-reverse operation.
The 7541-B develops 1.05 lb-ft stall torque, which represents the torque produced when the applied load prevents the motor output from rotating. For OEM designers, machine builders, and maintenance teams, the combination of 4,500 RPM output, 0.25 HP power, single gear reduction, and specified stall torque provides key selection data for matching this air power motor to compatible machinery or an existing pneumatic drive installation.
Type: Air Power Motor | Model: 7541-B | Rotation: Non-Reversible | Power: 0.25 HP | Speed: 4,500 RPM | Stall Torque: 1.05 lb-ft | Gear Reduction: Single
Features:
- Pneumatic motor configuration provides rotary output from a compatible compressed-air supply.
- Single gear reduction provides a gear-reduced output configuration with a specified speed of 4,500 RPM.
- 0.25 HP rating provides a defined power specification for matching the motor to compatible driven equipment.
- 4,500 RPM output supports machinery requiring a higher-speed gear-reduced pneumatic drive.
- 1.05 lb-ft stall torque provides a load reference when evaluating the motor against application requirements.
- Non-reversible configuration supports machinery designed for consistent single-direction rotation.
Made in USA: 
Applications:
- OEM machinery requiring single-direction pneumatic rotary power.
- Production equipment compatible with a 4,500 RPM gear-reduced motor output.
- Machine-building applications designed around the motor's specified horsepower, speed, and stall torque.
- Compressed-air-powered mechanisms where a single gear reduction configuration matches the equipment requirements.
- MRO replacement installations where the 7541-B performance ratings and mechanical interfaces match the existing motor.
FAQs:
- Q: Is the Ingersoll Rand 7541-B a reversible air motor?
A: No. The 7541-B is specified as non-reversible and is intended for compatible equipment requiring rotation in one direction. - Q: What is the output speed of the 7541-B?
A: The supplied product information specifies an output speed of 4,500 RPM. - Q: What gear reduction configuration does the 7541-B use?
A: The 7541-B is specified with single gear reduction. This is an important configuration detail when matching the motor to an existing installation or designing it into new equipment. - Q: What is the stall torque rating of this air power motor?
A: The 7541-B is rated at 1.05 lb-ft stall torque. Stall torque represents the torque developed when the applied load prevents the motor output from rotating. - Q: What should be verified before replacing another motor with the 7541-B?
A: Confirm that the application requires 0.25 HP, 4,500 RPM output, 1.05 lb-ft stall torque, non-reversible operation, and single gear reduction. Shaft, mounting, dimensional, and compressed-air requirements should also be verified against the manufacturer 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 - 0.25 HP | |||||||||||||
| 7538-B | 3/8" Keyed | 550 | 325 | 8.2 | 11.1 | 4.0 | 5.4 | 18.1 | 8.5 | 75 | 1.82 | 0.82 | Double |
| 7539-B | 3/8" Keyed | 900 | 550 | 5.0 | 6.7 | 2.4 | 3.2 | 18.1 | 8.5 | 75 | 1.82 | 0.82 | Double |
| 7540-B | 3/8" Keyed | 2,700 | 1,600 | 1.75 | 2.3 | 0.82 | 1.1 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| 7541-B | 3/8" Keyed | 4,500 | 2,700 | 1.05 | 1.4 | 0.49 | 0.66 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| 7542-C | 3/8" Keyed | 20,000 | 12,000 | 0.22 | 0.3 | 0.11 | 0.14 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| 7533-B | 3/8"-24 Th’d. | 550 | 325 | 8.2 | 11.1 | 4.0 | 5.4 | 18.1 | 8.5 | 75 | 1.82 | 0.82 | Double |
| 7534-B | 3/8"-24 Th’d. | 900 | 550 | 5.0 | 6.7 | 2.4 | 3.2 | 18.1 | 8.5 | 75 | 1.82 | 0.82 | Double |
| 7535-C | 3/8"-24 Th’d. | 2,700 | 1,600 | 1.75 | 2.3 | 0.82 | 1.1 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| 7536-B | 3/8"-24 Th’d. | 4,500 | 2,700 | 1.05 | 1.4 | 0.49 | 0.66 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| 7537-C | 3/8"-24 Th’d. | 20,000 | 12,000 | 0.22 | 0.3 | 0.11 | 0.14 | 18.1 | 8.5 | 75 | 1.52 | 0.68 | Single |
| Reversible - 0.25 HP | |||||||||||||
| 7543-B | 3/8" Keyed | 550 | 300 | 7.80 | 10.6 | 4.37 | 5.9 | 20.0 | 9.4 | 75* | 1.82 | 0.82 | Double |
| 7544-B | 3/8" Keyed | 900 | 550 | 4.75 | 6.4 | 2.62 | 3.5 | 20.0 | 9.4 | 75* | 1.82 | 0.82 | Double |
| 7545-B | 3/8" Keyed | 2,700 | 1,500 | 1.60 | 2.2 | 0.87 | 1.1 | 20.0 | 9.4 | 75* | 1.52 | 0.68 | Single |
| 7546-B | 3/8" Keyed | 4,500 | 2,400 | 0.98 | 1.3 | 0.55 | 0.7 | 20.0 | 9.4 | 75* | 1.52 | 0.68 | Single |
| 7547-C | 3/8" Keyed | 20,000 | 11,000 | 0.22 | 0.3 | 0.12 | 0.16 | 20.0 | 9.4 | 75* | 1.52 | 0.68 | Single |
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For help selecting the correct Ingersoll Rand Air Power Motors for your assembly application, call (800) 608-5210 or email info@intlairtool.com
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