Neiko 03716B Professional Grade Torque Multiplier, 2200 Foot-Pound

I bought the Neiko 03716B torque multiplier to help with frozen heavy-duty lug bolts that my impact gun couldn’t budge — and it delivered. Right out of the box, the tool feels heavy and solid. It’s not flashy, but the build quality is strong. Using it was pretty straightforward and It took way less effort than I expected to loosen bolts that had probably been frozen in place for years. The size is just right — compact enough to fit under a truck or around tight wheel wells, but powerful enough to do the job and the carrying case is a nice touch. If you’re doing heavy work and tired of fighting with over-torqued or rusted bolts, this is worth the investment. It’s not something I use every day, but when I need it, I’m glad I have it.

So far so good

First, for higher torque fasteners, over perhaps 200ft-lb, this is a great tool to have and reasonably affordable. As long as there is something for the reaction arm to rest on and room for the rather large tool head, the Neiko torque multiplier makes torque application much less of a strain particularly for one's back in awkward positions. And you really don't want to strain your back. Next, there are complaints about the tool having 3:1 laser etched ratio when the mechanical ratio is 3.3:1. So I did a quick empirical test because, yes, I don't want to substantially over torque fasteners: -- first verified the tool is 3.3:1 (1/2 wrench in one side, get about 3.3 turns for one turn of 3/4 side) -- next torque a couple of wheel lugs using tool, with 55ft-lb input (good quality CDI torque wrench) -- then removed torque multiplier, and adjust CDI torque wrench starting at 160ft-lb in 5ft-lb increments until I passed the lug nut torque that was applied with the torque multiplier. At 160- click, no movement of lugs. Lugs torqued higher than 160 At 165- click, no movement of lugs. Lugs torqued higher than 165 At 170- click, no movement of lugs. Lugs torqued higher than 170 At 175- lugs moved before click. So the torque of the lugs is between 170 and 175 This gives a torque ratio for this particular Neiko tool of about 3.1:1. The above is very empirical, no special calibrations were used. Using 3:1 is probably OK, perhaps adjust the input a tad low, or round down when calculating the torque wrench setting, or just figure that the fastener torque is not that critical and 3-5% won't matter due to other tolerances (torque wrench, dirt, fastener metallurgy, how much Wheaties was eaten for breakfast, ...). I like the tool, now those 300ft-lb strut bolts or 450ft-lb pinion nut pre-loads won't be quite so much effort.

Let me start with the list of two important problems using this type of tool: 1) The handle of this wrench needs to rest against an immobile surface, say, the ground. Because all of your leverage comes partly from this handle being captivated somehow against an immovable object 2) Which brings you to the second problem. If you manage to rest that handle on the ground, say, the object the wrench is attached to wants to lift up when you apply torque to loosen the fastener you are after Case in point. I purchased this to deal with a VW flywheel gland nut. The block is on my garage floor. The handle rests against the same floor. I apply a breaker bar. The block lifts off the floor. So, if the block were tied or bolted down to the floor, all might work as you wanted it to. In the end, I used a pneumatic air wrench to remove the nut in a few seconds. So the tool is an expensive paper weight for me unless I figure out a better way to fasten the target assembly to a bench or floor and that attachment can apply greater force than the tool (and not tip over my bench). All of the YouTubes of this tool show people taking off military vehicle lug nuts, or using the weight of a car to counteract the tool. So, I guess there are applications where the tool will work. I further suppose my application is not one of them. The tool itself is made well, and looks like a good quality product. I'm just not sure it's suitable for every big torque task. Some of these tasks I performed many times in the past by constructing a few long levers from flat steel, pipe extensions for my wrenches and loctite to prevent loosening.

Works great, but make sure you read the instructions and use it accordingly to rotation. You could easily go the wrong direction and over torque a bolt/nut instead of removing it and when tightening make sure you calculate the torque wrench accordingly.

Hace su trabajo funciona bien y de buen material

Durable

No manual, spair O ring is for the 3/4 input to 1’’ output and the red box is big, hard to rotate. I opened the tool and apply grease to the gears inside…

Brilliant value for a really well made product. Just laughed at my 1,100 N/M hub nut that had defied my trusty 3/4" square T bar & 2metres of tubing, my cheap & nasty 3/4 drive torque wrench in reverse etc. Hardly surprising when this compact tool will handle a torque nearly 5 times greater!

I bought this torque multiplier based on good online reviews, and while I haven't used it yet, it looks and feels every bit as good as I expected. Next time I need to remove/replace tractor wheel nuts for example, I know it's there in the toolkit. I was always wary of using long breaker bars!