Ingersoll Rand 4800U Multi-Vane Non-Reversible Air Motor is designed to provide reliable pneumatic rotary power for industrial applications requiring extremely high torque output, controlled low-speed operation, and continuous single-direction performance. Part of the 4800 Series, this air motor delivers 3.5 HP with a free speed of 185 RPM. Its multi-vane design converts compressed air into smooth, continuous rotary motion, while the non-reversible configuration provides dependable operation for equipment designed to rotate in one direction.
The 4800U provides 265 ft-lbs starting torque, offering exceptional breakaway force to initiate rotation under heavy loads, and 354 ft-lbs stall torque, representing the maximum torque produced when the output shaft is prevented from rotating. With its combination of horsepower, very low operating speed, and extremely high torque capability, this air motor is suited for demanding OEM machinery, industrial processing equipment, material handling systems, and other applications requiring dependable compressed-air rotary power.
Type: Multi-Vane Air Motor | Series: 4800 Series | Model: 4800U | Rotation: Non-Reversible | Power: 3.5 HP | Free Speed: 185 RPM | Starting Torque: 265 ft-lbs | Stall Torque: 354 ft-lbs
Features:
- Multi-vane air motor design provides smooth and consistent pneumatic rotary power.
- Non-reversible configuration supports dependable operation in a single rotational direction.
- 3.5 HP output provides substantial pneumatic power for compatible industrial equipment.
- 185 RPM free speed offers controlled rotary operation with exceptional torque capability.
- 265 ft-lbs starting torque provides a manufacturer-published reference for startup torque capability.
- 354 ft-lbs stall torque provides a manufacturer-published reference for maximum torque output under stalled conditions.
- 4800 Series motor design supports OEM integration and replacement applications where specifications match.
- Compressed-air operation provides a practical alternative to electrically powered rotary drives in suitable environments.

Tech Tip: To increase tool performance, extend tool life and lessen repair costs use it with a Filter-Regulator-Lubricator (FRLs)
Made in USA: 
Applications:
- OEM machinery requiring extremely high-torque pneumatic rotary power.
- Industrial processing equipment requiring controlled low-speed operation.
- Material handling systems and heavy-duty drive applications.
- Manufacturing equipment requiring continuous single-direction operation.
- Replacement installations where motor specifications match the existing equipment requirements.
FAQs:
- Q: Is the Ingersoll Rand 4800U reversible?
A: No. This model is specified as a non-reversible air motor designed for operation in one rotational direction. - Q: What is a multi-vane air motor?
A: A multi-vane air motor uses sliding vanes inside a rotor to convert compressed air into smooth rotary motion. - Q: What is the rated free speed of the 4800U?
A: The manufacturer specifies a free speed of 185 RPM. - Q: What is the difference between starting torque and stall torque?
A: Starting torque is the torque available to begin rotating a load from rest, while stall torque is the maximum torque produced when the output shaft is prevented from rotating. - Q: What should be verified before installation?
A: Confirm horsepower, speed requirements, rotation direction, shaft dimensions, mounting configuration, and compressed-air requirements using the Ingersoll Rand Air Motor Catalog before installation.

| SKU | MAX. POWER - HP | MAX. POWER - KW | SPEED AT MAX. POWER - RPM | FREE SPEED - RPM | STARTING TORQUE - LB-FT | STARTING TORQUE - NM | STALL TORQUE - LB-FT | STALL TORQUE - NM | AIR CONSUMPTION AT MAX. POWER - SCFM | AIR CONSUMPTION AT MAX. POWER - M³/M | WEIGHT - LB | WEIGHT - KG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NON-REVERSIBLE | ||||||||||||
| 4800D | 3.8 | 2.83 | 5,250 | 9,850 | 5.8 | 7.8 | 7.7 | 10.4 | 98 | 2.77 | 15 1/4 | 6.92 |
| 4800K | 3.7 | 2.76 | 821 | 1,538 | 35.3 | 47.8 | 47.0 | 63.7 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4800M | 3.7 | 2.76 | 560 | 1,050 | 51.0 | 69.2 | 69.0 | 93.6 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4800N | 3.7 | 2.76 | 387 | 726 | 75.0 | 102.0 | 100.0 | 136.0 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4800P | 3.5 | 2.61 | 260 | 510 | 98.0 | 133.0 | 131.0 | 178.0 | 95 | 2.69 | 19 3/4 | 8.96 |
| 4800Q | 3.5 | 2.61 | 194 | 375 | 129.0 | 175.0 | 173.0 | 235.0 | 95 | 2.69 | 19 3/4 | 8.96 |
| 4800S | 3.5 | 2.61 | 146 | 275 | 178.0 | 241.0 | 238.0 | 323.0 | 95 | 2.69 | 19 3/4 | 8.96 |
| 4800U | 3.5 | 2.61 | 97 | 185 | 265.0 | 359.0 | 354.0 | 480.0 | 95 | 2.69 | 19 3/4 | 8.96 |
| REVERSIBLE | ||||||||||||
| 4840D | 3.3 | 2.46 | 4,550 | 9,100 | 5.2 | 7.0 | 6.9 | 9.4 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4840K | 3.2 | 2.39 | 711 | 1,429 | 32.0 | 43.4 | 42.7 | 57.9 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4840M | 3.2 | 2.39 | 485 | 975 | 47.3 | 64.0 | 63.0 | 85.4 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4840N | 3.2 | 2.39 | 336 | 675 | 67.7 | 91.7 | 90.2 | 122.0 | 95 | 2.69 | 15 1/4 | 6.92 |
| 4840P | 3.0 | 2.24 | 228 | 475 | 93.0 | 126.0 | 125.0 | 170.0 | 95 | 2.69 | 20 1/8 | 9.13 |
| 4840Q | 3.0 | 2.24 | 167 | 350 | 123.0 | 167.0 | 165.0 | 224.0 | 95 | 2.69 | 20 1/8 | 9.13 |
| 4840S | 3.0 | 2.24 | 125 | 255 | 161.0 | 218.0 | 215.0 | 292.0 | 95 | 2.69 | 20 1/8 | 9.13 |
| 4840U | 3.0 | 2.24 | 83 | 170 | 225.0 | 305.0 | 300.0 | 407.0 | 95 | 2.69 | 20 1/8 | 9.13 |
Looking for more information about Ingersoll Rand Motor? Click here to view the Catalog.
For help selecting the correct Ingersoll Rand 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
