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Torque wrench clik type or arrow which is best

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rod

03-22-2001 13:50:13

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I want to get a good torque wrench 1/2 inch drive for foot pounds up to 150 or so is the type that clicks when torque is reached better than the pointer types.
regards
rod

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Skinner

03-25-2001 04:26:01

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

Be very careful while listening to others explain the accuracy deal.

I own a full set 3/8 to 3/4 " snap on click type torque wrenchs, while at the same time, I have 1/2 & 3/4" drive dial type snap on wrenchs (aircraft certified).

The dial type are much more accurate with most being well within 1%, however there is an art to using "any" torque wrench and recieving accurate results. Most click type (even snap on) are only accurate to 3% some are 5%. For everyday fasteners and automobiles, they can be considered very acceptable. I have a 10 year old Sam's Club 1/2" drive torque wrench someone (wife) bought me as a gift before she learned I don't normally use tools like that. I kept it around for a nice ratchet to roll engines over and break bolts. After years and years of abuse, I was very surprise to find it within 5 to 8 FtLbs at 200. Not bad at all for an abused tool. My Snap on click type wrench was off more than that when calibrated. I had the luxury at work to have a calibration checker. The tester also confirmed the 1% or less specs on the dial type. (One reason is it can be zero'd each time). When I say dial type, I am not referring to the $10 Autozone beam and pointer style. I have not tested a beam and pointer torque wrench so I can't give you any specs, but I feel you may be lucky to get with 10% after using it numerous times. I kind of felt that was a disposable torque wrench that would get the weekend guy out of a bind. My opinion only.

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jdtech

03-24-2001 20:15:46

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

I agree with BFO, Snap-On is about the only way to go with a torque wrench. I prefer Snap-on's flat style with the adjustment on the side they hold their calibration well

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rhudson

03-23-2001 19:09:44

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

i would have to say that the dial type are the most accurate, but who can afford them except the military. do any of you have experience with the type that sears is selling? load cell that attaches to your rachet and plugs into a fluke meter? thanks.

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BFO

03-23-2001 15:30:43

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

I prefer the click type as well. Do yourself a favour and get the best one you can afford, and, in the 50 - 250 ft.lb. range. That way you won't be using it at it's limit the majority of the time. I fooled myself for years with cheapies, until I had a job that required scheduled calibration of all my measuring equipment and torque wrenches. The cheap wrenches would never hold calibration. For the last three years my Snap-On's have not required any work. With a quality tool, you will not only get better accuracy, but as the others mentioned, repeatability.

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Tyler(WA)

03-23-2001 06:45:00

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

Accuracy is relative to purpose here. Though it is important to be fairly close to the specified torque, it is more important that all bolts/nuts of a given assembly be at equal tension.

If a cheap "click" type torque wrench is more consistant (though less accurate) it may be the better tool for your purpose. They're my preference..... but then, I'm lazy.

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big fred

03-23-2001 10:21:37

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Re: Re: Torque wrench clik type or arrow which is best in reply to Tyler(WA), 03-23-2001 06:45:00

Thanks, Tyler, that's exactly what I was trying to say last night when my ISP connection broke before I could post. In 20 years as an engineer designing aerospace hardware, I can think of only one time I really needed to torque a fastener to a dead-on torque, and that was when I needed a 1/4 inch bolt torqued to 20-24 inch pounds. Any other time I have only cared that all fasteners are torqued the same. If you are installing a fastener with locking features, you need to account for the running torque of the locking feature, which can be a substantial fraction of the torque required to achieve the desired clamping force.

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Al English

03-23-2001 05:37:45

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

Hi rod, Vernier adjust click type torque wrenches have the potential to be accurate. However, due to the way their mechanism operates, small machining errors make a big difference in accuracy. And, small amounts of wear cause them to loose calibration and/or become non-linear. What that means is a cheap click type torque wrench is not the way to go. If it ever was accurate, it is less likely to stay that way than a good one. Don't think that I'm against click type wrenches, I have three. But, they are good ones, I periodically check them with a more reliable and more accurate dial read-out torque wrench, and have never found any of them to be off. If low cost were the first priority, I'd go with a good beam type wrench over a cheap click type. The biggest drawback to a beam type wrench is that if not pulled on straight the pointer will rub on the surrounding cage and affect the reading.

Don't overlook the possibility of a used wrench. If you can find a top of the line wrench for the right price, it can be overhauled(if needed) and calibrated, and you'll have a premium wrench for well under the cost for a new one. Good luck...Al English

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John in Abq

03-23-2001 05:00:21

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

If you have the "click" type be sure and back the micrometer dial off to zero when not using the wrench. This helps to prevent problems with the internal spring. Also you are supposed to have the wrench calibrated every year. Yeah, right! Don't be tempted to use the wrench as a breaker bar, hammer or such.

If you treat it as a precision tool it will give you many years of accurate readings.

John

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Larry Garbarek

03-22-2001 21:03:34

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

During my many years of selling Armstrong Bros. tools, there is no question in the industry that the pointer type torque wrench is more accurate. And, it will stay accurate until the unlikely event that you put a bend in the shank.

BUT, it is so inconvenient and sometimes impossible to torque a fastener and read the pointer accurately at the same time that this type of torque wrench may not be what you want.

Suggest buying a click type, made in U.S.A. There are at least a dozen brands. Buy the cheapest. They are not impossibly expensive and you can probably amortize its cost over a lifetime.

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Brian G.

03-22-2001 17:58:59

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

I have used both and although I don't use a torque wrench often, I will relate my experience with the "click" type (which I agree should be the more accurate). The first "click type I bought was one of the Taiwan made $19.95 models. When I was torquing the 5/16" clutch cover bolts on a Ford 289, I twisted one right off. Later, I acquired a "Utica" with a whole bunch of tools I bought and although it doesn't look much different, it seems to be much, much more accurate. I guess the old addage "you gets what yous pay for" holds true.

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F14

03-22-2001 15:24:58

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Re: Torque wrench clik type or arrow which is best in reply to rod, 03-22-2001 13:50:13

I'm going to go out on a limb here and say that the micrometer adjust click type is more accurate than the beam-pointer type, if for no other reason than the error introduced by having to visually read the pointer while holding pressure on the wrench.

I don't KNOW this to be a fact, but I'd bet on it.

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Dave M

03-22-2001 15:44:52

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Re: Re: Torque wrench clik type or arrow which is best in reply to F14, 03-22-2001 15:24:58

I agree. The micrometer (click) type is so much more convenient that you will probably be more accurate with it, even though the most accurate torque wrenches available are the beam (pointer) type.

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