Built for demanding production drilling, fabrication, and industrial maintenance applications, the Ingersoll Rand 7AJJST4 Pistol Grip Air Drill combines a durable 0.75 HP pneumatic motor with 47 in-lbs maximum torque to deliver excellent drilling performance on medium-duty materials. Its 3,300 RPM free speed provides the slower rotational speed and increased torque needed for larger drill bits, helping operators maintain accuracy and control while reducing the risk of bit wandering during repetitive drilling operations. The trigger-start pistol grip design offers comfortable handling and responsive speed control, making it well suited for continuous industrial use.
As part of Ingersoll Rand's trusted 7 Series, the 7AJJST4 is engineered for dependable operation in manufacturing facilities, fabrication shops, and equipment maintenance departments. The non-reversible configuration is optimized for dedicated forward drilling, while the cantilever-mounted planetary gear system efficiently transfers power and simplifies maintenance. Its compact, lightweight construction allows operators to work comfortably throughout extended production shifts without sacrificing drilling capability.
Type: Pistol Grip Air Drill | Series: 7 Series | Model: 7AJJST4 | Power: 0.75 HP | Maximum Torque: 47 in-lbs | Free Speed: 3,300 RPM | Bit Holder Capacity: 1/4 in. (6 mm) | Start Type: Trigger Start | Reverse: No | Length: 7.4 in. (189 mm) | Weight: 2.2 lb (1.0 kg) | Side-to-Center: 0.9 in. (22 mm) | Air Consumption: 25 CFM | Air Inlet: 1/4 in. NPT | Minimum Hose Size: 5/16 in. | Sound Level: 82 dBA
Features:
- 0.75 HP pneumatic motor provides dependable performance for continuous industrial drilling applications.
- 47 in-lbs maximum torque delivers increased drilling capability for larger holes and more demanding materials.
- 3,300 RPM free speed offers enhanced control and drilling precision with larger diameter bits.
- Trigger-start throttle provides smooth, responsive speed control throughout drilling operations.
- Compact pistol grip configuration promotes balanced handling and improved maneuverability.
- Cantilever-mounted planetary gears provide efficient power transmission while simplifying routine maintenance.
- Skinsulate™ housing improves grip and enhances operator comfort during extended use.
- Lightweight construction helps reduce fatigue during repetitive manufacturing and maintenance tasks.
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:
- Production assembly operations requiring accurate drilling with higher torque output.
- Industrial maintenance departments servicing machinery, equipment, and fabricated assemblies.
- Metal fabrication shops drilling larger holes in steel, aluminum, and structural components.
- Manufacturing facilities performing repetitive drilling where controlled speed improves hole quality.
- General workshop and repair environments requiring reliable pneumatic drilling performance.
FAQs:
- Q: What makes the 7AJJST4 different from higher-speed 7 Series drills?
A: The 7AJJST4 trades higher RPM for increased torque, making it better suited for larger drill bits and applications that require additional drilling power and control. - Q: Is this drill reversible?
A: No. The 7AJJST4 is a non-reversible model intended for dedicated forward drilling applications. - Q: What accessories are compatible with this drill?
A: The drill is equipped with a 1/4-inch (6 mm) bit holder for use with compatible drilling accessories. - Q: What air supply is recommended?
A: The drill consumes approximately 25 CFM and features a 1/4-inch NPT air inlet. A minimum 5/16-inch air hose is recommended to maintain adequate airflow and consistent performance.
| SKU | MAX. TORQUE | FREE SPEED | WEIGHT | LENGTH | MAX. DRILL DIA. | SIDE TO CENTER | AIR CONSUMPTION |
|---|---|---|---|---|---|---|---|
| in-lbs (Nm) | rpm | lbs (kg) | in (mm) | in (mm) | in (mm) | cfm (L/min) | |
| TRIGGER START | |||||||
| 7ADST4 | 10 (1.1) | 20,000 | 2.2 (1.0) | 7.4" (189) | 1/4" (6) | 0.9" (22) | 25 (700) |
| 7AHST4 | 33 (3.7) | 6,000 | 2.3 (1.1) | 7.4" (189) | 1/4" (6) | 0.9" (22) | 25 (700) |
| 7AJST4 | 40 (4.5) | 4,800 | 2.3 (1.1) | 7.4" (189) | 1/4" (6) | 0.9" (22) | 25 (700) |
| 7AJJST4 | 47 (5.5) | 4,000 | 2.3 (1.1) | 7.4" (189) | 1/4" (6) | 0.9" (22) | 25 (700) |
| 7AKST6 | 58 (6.6) | 3,200 | 2.4 (1.1) | 7.6" (194) | 3/8" (10) | 0.9" (22) | 25 (700) |
| 7ALST6 | 78 (8.8) | 2,400 | 2.7 (1.2) | 7.8" (198) | 3/8" (10) | 0.9" (22) | 25 (700) |
| 7AMST6 | 130.1 (14.7) | 1,400 | 2.9 (1.3) | 8.5" (216) | 3/8" (10) | 0.9" (22) | 25 (700) |
| 7ANST8 | 185.0 (20.9) | 900 | 3.2 (1.5) | 8.7" (222) | 1/2" (13) | 0.9" (22) | 25 (700) |
| 7AQST8 | 269.9 (30.5) | 600 | 3.2 (1.5) | 8.7" (222) | 1/2" (13) | 0.9" (22) | 25 (700) |
Looking for more information about the Ingersoll Rand Drill? Click here to view the Catalog
For help choosing the proper Ingersoll Rand Drills for your assembly application, please email info@intlairtool.com or call (800) 608-5210
- Type
- Drill
- Power (hp)
- 0.75
- Actuation
- Trigger Start
- Torque (in-lbs)
- 47
- RPM
- 4000
- Length (in.)
- 7.4
- Bit Holder Capacity (in.)
- 1/4
- Side to Center (in.)
- 0.9
- Sound Level (dbA)
- 82
- Air Inlet
- 1/4" NPT
- Air Consumption (CFM)
- 25
- Min Hose Size (in.)
- 5/16
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