When a milling application calls for controlled, low-speed pneumatic rotation with substantial torque, the Ingersoll Rand 7805-3B Non-Reversible Milling Motor provides a purpose-built solution. This 0.85 HP air motor has a 350 RPM free speed and 55.00 ft-lbs stall torque, giving compatible milling equipment a low-speed output with significant torque capability. Its forward-rotation, non-reversible configuration is intended for machinery that operates in a single direction, while the double gear reduction supports the motor's reduced output speed and high torque characteristics.
The 7805-3B is suited to equipment integration where pneumatic drive is preferred and the application calls for deliberate rotational speed rather than high-speed operation. The double gear reduction provides two stages of speed reduction between the motor and output, making this model a practical choice for compatible milling machinery and other industrial equipment requiring controlled forward rotation.
Type: Non-Reversible Milling Motor | Rotation: Forward-Rotation | Power: 0.85 HP | Free Speed: 350 RPM | Stall Torque: 55.00 ft-lbs | Gear Reduction: Double
Equipment Options:
45058 - Foot Bracket
41559 - Flange Bracket

Features:
- Forward-rotation configuration provides dedicated directional operation for compatible milling equipment.
- Non-reversible design suits machinery intended to operate in one rotational direction.
- 0.85 HP pneumatic motor provides rotary power for compatible industrial equipment.
- 350 RPM free speed provides controlled, low-speed operation for applications where output speed is a key requirement.
- Double gear reduction provides substantial speed reduction between the motor and output.
- 55.00 ft-lbs stall torque provides significant torque capability when the motor is stopped under load.
- Pneumatic operation provides an alternative drive source for compatible milling and industrial machinery.
Made in USA: ![]()
Applications:
- Milling machinery requiring low-speed, forward-only pneumatic rotation.
- Industrial production equipment where controlled rotational speed and high torque capability are required.
- OEM machinery and equipment integration using a gear-reduced pneumatic motor.
- Custom machinery requiring a 350 RPM free speed and substantial stall torque.
- Equipment applications where pneumatic drive is preferred over an electric motor.
FAQs:
- Q: Is the 7805-3B reversible?
A: No. The 7805-3B is a non-reversible milling motor configured for forward rotation. - Q: What does double gear reduction mean?
A: Double gear reduction uses two stages of gear reduction to reduce output speed. This configuration is suited to applications requiring controlled rotational speed and greater torque capability at the output. - Q: What is the free speed of the 7805-3B?
A: The published free speed is 350 RPM. - Q: What does the 55.00 ft-lbs stall torque rating mean?
A: Stall torque is the torque available when the motor is stopped under load. The 7805-3B has a published stall torque of 55.00 ft-lbs. - Q: What type of equipment is this motor intended for?
A: The 7805-3B is a non-reversible milling motor intended for compatible milling machinery and industrial equipment requiring forward-only, low-speed pneumatic rotation. Mounting, shaft, air supply, and other equipment requirements should be verified before installation.

| SKU | Spindle | R.P.M. | Torque | Air Consumption at Free Speed |
Sound Level at Free Speed dB(A) |
Weight | Gear Reduction |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Free Speed |
Load Speed at Max. Hp |
Stall | Output at Max. Hp |
||||||||||
| lb-ft | Nm | lb-ft | Nm | SCFM | L/s | lbs | kg | ||||||
| NON-REVERSIBLE - 0.85 HP | |||||||||||||
| 7801-3B | 7/16"-20 UNF-3A Threaded, Plus 1/8" Sq. Key Drive |
4,600 | 2,400 | 4.00 | 5.5 | 1.86 | 2.5 | 41.7 | 19.7 | 78 | 4.89 | 2.20 | Single |
| 7803-3B | 1,200 | 600 | 16.00 | 21.9 | 7.44 | 10.2 | 41.7 | 19.7 | 78 | 6.39 | 2.86 | Double | |
| 7804-3B | 650 | 330 | 30.00 | 41.2 | 13.95 | 19.1 | 41.7 | 19.7 | 78 | 6.39 | 2.86 | Double | |
| 7805-3B | 350 | 170 | 55.00 | 75.5 | 26.25 | 36.0 | 41.7 | 19.7 | 78 | 6.39 | 2.86 | Double | |
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
