Impact wrench how much torque is enough.

WJA96 said:
which is why garages typically use air driven devices and, for very similar money to a good battery powered impact wrench you can buy a decent compressor and air powered impact wrench.
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Obviously it will depend on each garage, but the garages I go to seem to have adopted batteries over air.

They still have the old air lines though, so I guess they have them to fall back on.
 
jellybeard999 said:
Obviously it will depend on each garage, but the garages I go to seem to have adopted batteries over air.

They still have the old air lines though, so I guess they have them to fall back on.
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Air generally has more H&S considerations both in terms of use/servicing/certification and for example trip hazard, a battery powered impact gun less so - basically PAT on the charger.
 
Another Dewalt user here, it's not let me down yet but it is a bit of a chonk. I fancy some of the 12v Milwaukee line, as they still seem to have a decent spec despite been pretty small and I already have some of their 12v stuff.
 
Scottland said:
Another Dewalt user here, it's not let me down yet but it is a bit of a chonk. I fancy some of the 12v Milwaukee line, as they still seem to have a decent spec despite been pretty small and I already have some of their 12v stuff.
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It’s a slippery slope. I started out with Milwaukee 18v but once I started with the 12v as well I’ve found it to be very capable and the lighter weight makes them much nicer to use. Where I have tools from both ranges (impact wrenches and die grinders) I find that the 12v is now my go-to and I only break out the 18v tools for the heavy work. When I’m looking to add new tools I now tend to start off looking at the 12v options.
 
jellybeard999 said:
Obviously it will depend on each garage, but the garages I go to seem to have adopted batteries over air.

They still have the old air lines though, so I guess they have them to fall back on.
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Most garages will use 3 phase compressors. I guess it is just cheaper to use battery powered ones but I guess their is some h&s side to it as well.
 
After much reading, I'm still none the wiser. For every review that says x is really powerful, there is someone who says it's not :confused: :cry:

I'll ponder it over the coming weeks and bite the bullet if I see an offer on :)
 
I'd look on it more as (almost) everyone that owns an impact of some sort finds it incredibly useful, the discussion point is around which type is best for you and what you want to do with it.
 
I've got the 400NM Ryobi one and it's pretty good. It has been defeated a couple of times, but I've just had to add a small amount of heat to the bolt prior to hitting it with the impact wrench and it's moved. It really is a fantastic tool for DIY drive way mechanics and makes light work of heavily rusted suspension bolts/ball joints etc.

However, if you have Dewalt stuff already, I'd definitely recommend this:

https://www.screwfix.com/p/dewalt-dcf894n-18v-li-ion-xr-brushless-cordless-impact-wrench-bare/442hp

The thing you'll find most of the time is not that you don't have enough power, but you can't get the wrench in because it's too big/at the wrong angle. Someone posted the bigger Dewalt one above, but I'd happily sacrifice the power of that one, for the more compact nature of the one I've posted. 447NM with 813NM breakaway is more than enough for a home mechanic.

And in fact, looking on Amazon, it appears there is one which does 950NM which is still in the compact body form.

https://www.amazon.co.uk/Dewalt-DCF...KB1E0PPHE8H&psc=1&refRID=081AHV400KB1E0PPHE8H
 
Gaygle said:
I've got the 400NM Ryobi one and it's pretty good. It has been defeated a couple of times, but I've just had to add a small amount of heat to the bolt prior to hitting it with the impact wrench and it's moved. It really is a fantastic tool for DIY drive way mechanics and makes light work of heavily rusted suspension bolts/ball joints etc.

However, if you have Dewalt stuff already, I'd definitely recommend this:

https://www.screwfix.com/p/dewalt-dcf894n-18v-li-ion-xr-brushless-cordless-impact-wrench-bare/442hp

The thing you'll find most of the time is not that you don't have enough power, but you can't get the wrench in because it's too big/at the wrong angle. Someone posted the bigger Dewalt one above, but I'd happily sacrifice the power of that one, for the more compact nature of the one I've posted. 447NM with 813NM breakaway is more than enough for a home mechanic.

And in fact, looking on Amazon, it appears there is one which does 950NM which is still in the compact body form.

https://www.amazon.co.uk/Dewalt-DCF...KB1E0PPHE8H&psc=1&refRID=081AHV400KB1E0PPHE8H
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That amazon one is wrong its 447NM Max.
 
Once I tried Milwaukee tools, I carried on buying them!

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Gaygle said:
However, if you have Dewalt stuff already, I'd definitely recommend this:

https://www.screwfix.com/p/dewalt-dcf894n-18v-li-ion-xr-brushless-cordless-impact-wrench-bare/442hp

The thing you'll find most of the time is not that you don't have enough power, but you can't get the wrench in because it's too big/at the wrong angle. Someone posted the bigger Dewalt one above, but I'd happily sacrifice the power of that one, for the more compact nature of the one I've posted. 447NM with 813NM breakaway is more than enough for a home mechanic.

And in fact, looking on Amazon, it appears there is one which does 950NM which is still in the compact body form.
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This is the exact debate I'm having 894 Vs 899. I've discounted the 880 already.

Lopéz said:
This is a fantastic tool - wheel nuts, crank pulley bolts, hub nuts - it's never let me down.

It is pretty hefty though, both in size and weight.
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Would you say it's too big/heavy/awkward for home use? Better off with the 894?

They're the same price, but I'm concerned about usability and access, while also wanting something powerful enough. The 894 seems mu

My main use to be honest is probably wheel nuts, but I also want something capable of suspension, brakes, wheel hubs etc. I'm unlikely to strip down an engine, but may want to so belts and that sort of thing.

Obviously I have hand ratchets for light work.
 
I'd go for the 894. My 400NM Ryobi rarely, if ever fails, and it certainly makes light work of pinch bolts (including ones which haven't moved in nearly 20 years/150k miles)/suspension arm bolts and took off a hub nut.

As I said before, I frequently find that getting enough space to get it manoeuvred where I want to is the biggest issue (particularly in wheel wells), not the power which I never find to be a problem. And the Ryobi is pretty compact. The 899 is for sure more powerful, but it's heavier and more cumbersome too and you'll rarely, if ever, use the power advantage it has over the 894.
 
Gaygle said:
I'd go for the 894. My 400NM Ryobi rarely, if ever fails, and it certainly makes light work of pinch bolts (including ones which haven't moved in nearly 20 years/150k miles)/suspension arm bolts and took off a hub nut.

As I said before, I frequently find that getting enough space to get it manoeuvred where I want to is the biggest issue (particularly in wheel wells), not the power which I never find to be a problem. And the Ryobi is pretty compact. The 899 is for sure more powerful, but it's heavier and more cumbersome too and you'll rarely, if ever, use the power advantage it has over the 894.
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Bit the bullet on the 894 as I had an ebay discount code :)
 
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