The 1000-TH uses the rugged and reliable Twin Hammer mechanism - better suited for all-around automotive use. The twin hammer design has the hammer able to slide and rotate on a shaft, with a spring holding it in the downwards position. Between the hammer and the driving shaft is a steel ball on a ramp, such that if the input shaft rotates ahead of the hammer with enough torque, the spring is compressed and the hammer is slid backwards. On the bottom of the hammer, and the top of the anvil, are dog teeth, designed for high impacts. When the tool is used, the hammer rotates until its dog teeth contact the teeth on the anvil, stopping the hammer from rotating. The input shaft continues to turn, causing the ramp to lift the steel ball, lifting the hammer assembly until the dog teeth no longer engage the anvil, and the hammer is free to spin again. The hammer then springs forward to the bottom of the ball ramp, and is accelerated by the input shaft, until the dog teeth contact the anvil again, delivering the impact. The process then repeats, delivering blows every time the teeth meet, almost always twice per revolution.
All the Power, Half the Noise! The AIRCAT tool line has a substantially reduced level of noise while retaining more power and torque. This feature benefits not only the mechanic but also the overall business. The patented tuned exhaust muffler technology, in all the tools, allows discharged air to pass without developing back pressure, thus retaining more power, while significantly reducing noise. AIRCAT has innovated through-the-handle exhaust design, which incorporates its revolutionary worldwide patented internal muffler/filter. The benefits include reduced hazards from breathing exhausted air particulates, the elimination of blow-by into the operators eyes and lungs as well as reduce noise. AIRCAT also incorporates a patented ergonomically engineered handle design to relieve stress and fatigue on the operators hands, wrists and arms. The patented AIRCAT handle offers better overall distribution of weight for a balanced tool and provides a unique grip that makes it easier to use for prolonged periods of time.