Ti2115 - is about $75 over my budget. Is it made in the USA?
I see its a "twin hammer". The Nitrocat is a "twin clutch". Is one better than the other?
AIRCAT® 1150 model impact wrench uses a Durable Twin Hammer Mechanism.
The Rugged and Reliable Twin Hammer mechanism creates a higher speed and faster blow per minute (under a load) impact. The Twin Hammer is best suited for all-around automotive maintenance. 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
- Faster hard hitting impact (1,400 Blows Per Minute)
- Durable, Rugged and Reliable
- Recommended for all-around automotive torque applications
NITROCAT®1200-K model impact wrench use a Smooth Powerful Twin Clutch Mechanism
The Hard Hitting Twin Clutch mechanism creates a high torque initial impact.
The Twin Clutch design uses a hammer fixed directly onto the input shaft, with a pair of pins acting as clutches. When the hammer rotates past the anvil, a ball ramp pushes the pins outwards against a spring, extending them to where they will hit the anvil and deliver the impact, then release and spring back into the hammer, usually by having the balls "fall off" the other side of the ramp at the instant the hammer hits. Since the ramp need only have one peak around the shaft, and the engagement of the hammer with the anvil is not based on a number of teeth between them, this design allows the hammer to accelerate for a full revolution before contacting the anvil, giving it more time to accelerate and delivering a stronger impact.
- “An 800 lb Gorilla”
- Slower but harder hitting impact
- Recommended for high torque applications
At least it works quite well. Check around for the Matco version used, I've seen them go cheaper than the IR version for some reason.