Air Screwdrivers

Air screwdrivers – also known as pneumatic screwdrivers – are lightweight, high-speed tools designed for precision fastening in industrial, automotive, and assembly applications. Powered by compressed air, these tools offer consistent torque, long service life, and reduced operator fatigue compared to manual or battery-powered alternatives.

An air screwdriver is a handheld pneumatic tool used for driving and removing screws and other threaded fasteners. It works by converting compressed air into rotational torque, enabling the user to quickly and consistently tighten or loosen fixings.

Unlike drills or impact tools, air screwdrivers are specifically designed for controlled torque output. They are often used where repeatable tightening is essential – such as in manufacturing, electronics assembly, or precision maintenance.

Key Features:

• Consistent speed and torque output
• Compact, lightweight design
• Sensitive trigger operation
• Forward/reverse switch
• Adjustable torque control

An air screwdriver works by using compressed air—typically at 90 PSI (6.2 bar)—to power a small internal rotary vane motor. When the trigger is pressed (or the tool is pushed down in push-start models), air flows into the motor, causing a central shaft to spin. This rotation drives the bit holder or chuck, turning the screwdriver bit. Many models include a gear reduction system to control speed and torque, along with a torque clutch that disengages the drive once the preset torque is reached, helping to prevent over-tightening. Air consumption generally ranges from 2 to 6 CFM, depending on the tool’s size and application.

• Daily oiling: Use pneumatic air tool oil (such as ISO 22) before and after use. Simply add a few drops into the air inlet to lubricate internal parts. Alternatively, use an in-line lubricator or filter-regulator-lubricator unit to maintain clean and lubricated airflow.
• Check air lines: Ensure hoses are free from leaks, kinks, and moisture. This is also vital to ensure user safety.
• Drain compressors daily: Prevent water vapour from entering and corroding the tool and rusting the compressor tank.
• Store properly: Keep the tool in a dry place and ideally in a case when not in use.
• Bit Connection: Ensure all screwdriver bits are properly seated before use.
• Periodic Maintenance: For models with torque clutches, calibrate the torque settings periodically using a torque tester.

Air screwdrivers are available in several configurations depending on the intended application:

• Inline/Straight Screwdrivers: Long and narrow, ideal for tight or overhead spaces.
• Pistol Grip Screwdrivers: Comfortable for repetitive use with good trigger access.
• Angle Head Screwdrivers: For reaching fasteners in tight corners or recessed spaces.