Rapid Review - HF Earthquake 3/8" Air Ratchet

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For an early present, I got a HF Earthquake 3/8" air ratchet.



Specs are 70 ft/lbs of torque, 400 RPM, and 4 SCFM at 90 PSI. There's also a pin clutch impact mechanism to keep knuckles from getting banged up when it can't tighten any more. I'd have to say those specifications and the part about not being a knuckle-banger are pretty accurate. The push-down forward/reverse selector is also pretty easy to operate, although that might impede access to some areas. But those areas might better be served with a smaller 1/4" air ratchet.

I threw a Milton V-style male-male fitting onto it and started taking apart things. It's quick to spin off fasteners. I didn't feel like I was waiting for the tool to do its thing. It managed to break free the 10mm caliper bolts on my Cruze without assistance, as well as some bolts on my 1970's Ariens snowblower.

I tested it in reverse on lug nuts that were tightened to 80 ft/lbs. Nope, not happening. I didn't expect it to, either. What was nice was spinning the lugs back down, the pin clutch vibrated to let me know when it was reaching its limit. The ratchet didn't jump much, maybe 1/4" at the end of the tool before the clutch activated. When the clutch activated it acted similarly to the clutch on a clutched cordless drill. Torquing the lug nuts to 80 ft/lbs as verified by my torque wrench didn't take a lot of effort, so it seems like the torque rating is accurate for at least tightening.

Air consumption seemed to be pretty accurate. I was able to tighten down about 10 lug nuts before my 30 gallon compressor kicked on again. It's also fairly quiet for a HF air tool.

Do I see this as up to shop duty? I don't feel comfortable answering that since that's not my use for it. For my decidedly weekend warrior use, it's quite a nice tool. It's pretty solidly built, the machining looks to be a step above the non-Earthquake HF air tools, and the specs seem to be accurate as far as I can tell. It's staying in my toolbox, that's for sure.

P.S., it's made in Taiwan instead of China.
 
I have a 12 year old 1/2 Earthquake gun that still works great. It's held off top name brand tools in the shop. Only until this year did I step up and get a Cornwell 1250 lb/ft gun. It's far lighter and the extra torque helps at times.

Just bought a Monster 1/2" 500lb gun, but it's got issues. It has more torque tightening than loosening. My Snap-On rep will take care of it, and was genuinely concerned as he sells a lot of them (only $200).

For home use or beginner pro shop use, the HF Earthquake models seem excellent. Now if you want to compare the HF 3/8 ratchet to my Florida Pneumatic 3/8 with push button control and built in air regulator, doubt it would be as user friendly, but far cheaper compared to $350 10yrs ago. But made in Japan, so it's extremely well made.
 
Originally Posted By: G2Turbo

For home use or beginner pro shop use, the HF Earthquake models seem excellent. Now if you want to compare the HF 3/8 ratchet to my Florida Pneumatic 3/8 with push button control and built in air regulator, doubt it would be as user friendly, but far cheaper compared to $350 10yrs ago. But made in Japan, so it's extremely well made.


Florida Pneumatic stuff seems to be very good. I want to get their 1/4" stubby air rat. Sadly (or happily, depending on point of view), I don't wrench enough to justify it.
 
Nice looking tool.

What sockets did you end up getting to pair with this? I didn't fully read the other post.


Kinda have a little remorse now, i just literally pulled the trigger on a 3/8 astro nano for $120 shipped. Looks like this Ratchet is about $80ish +/- 20% coupon (dunno if it can apply, having been to HF in a while)

I didn't need the 400ft/lb power of the nano but it will be mainly for brake work and to retire my 2135t.
 
Originally Posted By: bowlofturtle
Nice looking tool.

What sockets did you end up getting to pair with this? I didn't fully read the other post.


Kinda have a little remorse now, i just literally pulled the trigger on a 3/8 astro nano for $120 shipped. Looks like this Ratchet is about $80ish +/- 20% coupon (dunno if it can apply, having been to HF in a while)

I didn't need the 400ft/lb power of the nano but it will be mainly for brake work and to retire my 2135t.


After experiencing the pin clutch in action, I'm using regular old chrome sockets. The impact mechanism should be more properly described as: save your knuckles from impact mechanism. The tool stops turning when it reaches max torque. Nice for confined spaces or when our attention turns elsewhere while running down a fastener. It won't tighten a nut/bolt more than 70 ft/lbs.

This is a completely different tool than an impact gun. It's meant for quick removal and installation of lower-torque fasteners, not breaking free fasteners. This would be great for things like caliper bolts, engine covers, and other fasteners in the 10-17mm size range that don't require a lot of torque to do their jobs. That Nano would be great for lugs, suspension, or caliper bracket bolts, where being torqued down tight really does matter. Two different tools for different jobs.
 
It sounds like you got yourself a decent tool. Interesting on how it reacts like the clutch on an cordless drill. If it can stand up to just a couple of years of daily use its a great buy for that money.

A couple of questions..
Does the paddle regulate well, is the speed easy to control?
When the clutch kicks in does it continue to tighten by hammering if you keep the paddle depressed?
Any idea how much torque it generates at the point the clutch kicks in?
What material is the range covering, hard plastic or rubberized?
 
Originally Posted By: sciphi
Originally Posted By: bowlofturtle
Nice looking tool.

What sockets did you end up getting to pair with this? I didn't fully read the other post.


Kinda have a little remorse now, i just literally pulled the trigger on a 3/8 astro nano for $120 shipped. Looks like this Ratchet is about $80ish +/- 20% coupon (dunno if it can apply, having been to HF in a while)

I didn't need the 400ft/lb power of the nano but it will be mainly for brake work and to retire my 2135t.


After experiencing the pin clutch in action, I'm using regular old chrome sockets. The impact mechanism should be more properly described as: save your knuckles from impact mechanism. The tool stops turning when it reaches max torque. Nice for confined spaces or when our attention turns elsewhere while running down a fastener. It won't tighten a nut/bolt more than 70 ft/lbs.

This is a completely different tool than an impact gun. It's meant for quick removal and installation of lower-torque fasteners, not breaking free fasteners. This would be great for things like caliper bolts, engine covers, and other fasteners in the 10-17mm size range that don't require a lot of torque to do their jobs. That Nano would be great for lugs, suspension, or caliper bracket bolts, where being torqued down tight really does matter. Two different tools for different jobs.



I might get this next time i'm at HF. Does the 20% coupon work with this?
 
Originally Posted By: Trav
It sounds like you got yourself a decent tool. Interesting on how it reacts like the clutch on an cordless drill. If it can stand up to just a couple of years of daily use its a great buy for that money.

A couple of questions..
Does the paddle regulate well, is the speed easy to control?
When the clutch kicks in does it continue to tighten by hammering if you keep the paddle depressed?
Any idea how much torque it generates at the point the clutch kicks in?
What material is the range covering, hard plastic or rubberized?


The paddle seems to regulate decently from mid to high speed. It wasn't that great at lower-speed stuff. For a quick burst, it worked fine. The wrench stopped tightening, which was nice. Lastly, the covering is rubberized. It made gripping the tool fairly easy, and it was warm-ish to hold.

Bowl, I used a holiday 25% coupon. The system took it just fine, so I suspect the 20% off coupon will work too.
 
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