Automotive & Workshop Air Impact Wrench: High Torque & Versatile
Air Impact Wrench Series: Power & Precision for Every Job
Product Specifications
| Model No. |
Square Drive (inch) |
Capacity Bolt Size (inch/mm) |
Free Speed (rpm) |
Max. Torque (ft-lb/N-M) |
Air Inlet (PT) |
Air Hose (ID) |
Avg. Air Consumption (cfm/m³/min) |
Sug. Air Comp (HP) |
Measure (cm/pcs) |
Weight (kgs) |
| YD91-001 |
1/2" |
5/8" / 16 |
7000 |
230 / 312 |
1/4" |
3/8" |
8 / 0.23 |
2 |
38x21.5x43/10 |
21/20 |
| YD91-002 |
1/2" |
5/8" / 16 |
7000 |
425 / 576 |
1/4" |
3/8" |
8 / 0.23 |
2 |
38x21.5x43/10 |
25/24 |
| YD91-003 |
3/4" |
1" / 25.4 |
4500 |
500 / 678 |
1/4" |
3/8" |
12 / 0.34 |
3 |
50x27.5x32.5/5 |
24/23 |
| YD91-004 |
3/4" |
1" / 25.4 |
4500 |
500 / 678 |
1/4" |
3/8" |
12 / 0.34 |
3 |
50x27.5x32.5/5 |
25/24 |
| YD91-005 |
3/8" |
/ |
9000 |
130 / 176 |
1/4" |
3/8" |
5.5 / 0.16 |
2 |
33x21x33/10 |
13/12KGS |
Product Details
1/2" Air Impact Wrench (YD91-001)
Crafted with a die-cast aluminum body, this wrench is lightweight yet durable. It's reversible, allowing for both tightening and loosening tasks. You can adjust the torque to match different fastener requirements, and rubber scuff guards on the nose and back protect the tool and work surfaces. A built-in air regulator lets you vary speed and power, making it versatile for tire changing and general assembling work in workshops. Plus, the front exhaust directs air away from your workspace.
1/2" Heavy Duty Air Impact Wrench (YD91-002)
Equipped with a durable twin hammer impact mechanism, this heavy-duty wrench delivers powerful performance. Pressure-feed lubrication ensures smooth operation and longevity. An adjustable power regulator gives you control, and the two-piece construction makes servicing a breeze. It offers variable speed and high torque, providing the sheer power needed to tackle tough jobs with ease while being economical. Just like the previous model, it's great for tire changing and general assembling, with front exhaust for convenience.
3/4" Air Impact Wrench (YD91-003)
Featuring a comfortable pistol grip, this wrench is easy to handle even during prolonged use. It has adjustable torque and is reversible, suiting various applications. With ample power, it can effortlessly take on the toughest tasks. It's ideal for spring works, pinon nut removal, and major engine teardown, and the front exhaust keeps your work area clear.
3/4" Heavy Duty Air Impact Wrench (YD91-004)
This professional-grade wrench comes with a pin clutch option feature for enhanced control. An auto oiler ensures proper lubrication, and it boasts high torque for demanding jobs. Perfect for spring works, pinon nut removal, and major engine teardown, it delivers the power needed to handle tough tasks easily, with front exhaust for a clean workspace.
3/8" Air Impact Wrench (YD91-005)
Built with a die-cast aluminum body, this compact wrench is reversible. You can adjust the torque, and rubber scuff guards on the nose and back offer protection. A built-in air regulator allows speed and power adjustment, making it suitable for tire changing and general assembling in workshops. The front exhaust keeps air away from your work.
Application Scenarios
- Automotive Repair Shops: All models excel at tire changing, thanks to their torque control and power. The heavy-duty ones (YD91-002, YD91-004) are perfect for engine teardown and pinon nut removal, while the 3/4" models (YD91-003, YD91-004) are ideal for spring works.
- General Workshops: For everyday assembling tasks, the 1/2" (YD91-001) and 3/8" (YD91-005) models are convenient, with their adjustable torque and easy handling.
- Industrial Settings: When tackling heavy-duty jobs that require high torque, like major equipment disassembly, the 3/4" heavy-duty wrench (YD91-004) is the go-to choice.
Common Questions
Q1: How do I maintain these air impact wrenches?
A1: Regularly check and refill lubrication (especially for models with pressure-feed lubrication or auto oilers). Keep the air inlet clean to prevent debris from entering. After use, store them in a dry place to avoid rust. Also, periodically inspect for any loose parts or wear and tear.
Q2: Can these wrenches be used with any air compressor?
A2: You need to match the suggested air compressor horsepower (Sug. Air Comp HP) listed in the specifications. Using a compressor with insufficient HP may lead to reduced performance, while one with too much power might not cause damage but is unnecessary. Also, ensure the air hose ID matches the requirement for optimal air flow.
Q3: Are these wrenches suitable for home use?
A3: The 1/2" (YD91-001) and 3/8" (YD91-005) models, with their versatility and ease of use, can be used for home projects like small-scale assembling or occasional tire changes. However, the heavy-duty models are more suited for professional or industrial use due to their high torque and power.
Q4: What does "reversible" mean for these wrenches?
A4: "Reversible" means the wrench can rotate in both clockwise and counterclockwise directions. This allows you to not only tighten fasteners but also loosen them, making the tool more versatile for different tasks.
