Ask the Expert: What is the difference between an impact air ratchet and a conventional air ratchet?

May 7, 2020
The impact air ratchet has an impacting mechanism that can help prevent injury on the job.

Question: What is the difference between an impact air ratchet and a conventional air ratchet?
Answer: 

Conventional air ratchets usually deliver 20-25 ft-lbs of torque and 200-250 rpm. They will also install or remove one 3” lag bolt in 9 seconds. When technicians are installing a bolt, as they get to the bottom, the conventional air ratchet will jerk their hand and arm, potentially causing the conventional air ratchet to mash their fingers against other metal in tight areas. 

Impact air ratchets, on the hand, can deliver up to 55 ft-lbs of torque and 600-700 rpm and will remove or install three to four 3” lag bolts in 9 seconds. The impact ratchet has an impacting mechanism, much like an impact wrench, that will provide high torque, high speed, and is reaction free. When technicians are installing bolts, as they reach the bottom, the impact ratchet does not jerk their hand or arm, so there is no risk of injury. 

Information provided by SP Air Corporation 

Sponsored Recommendations

Fuel Injection Systems – The Ultimate Technician Guide

Modern fuel injection is complex. Get expert insights on fuel injectors and related components.

ABS Sensor Insights – Get the Right Fit Every Time

ABS sensors are critical to vehicle safety. Learn how they interact with electronic systems and how to choose the best replacement.

Prevent Oil Filter Housing Failures – What Every Tech Should Know

Learn why Pentastar oil filter housings commonly fail and how Standard's enhanced design prevents leaks.

Electronic Throttle Bodies – Common Failures & Fixes

Learn how ETBs fail and the engineering advancements Standard brings to ensure lasting performance.

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!