Question about Bosch Drills

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Using a bosch psr18 power drill

When setting the torque how do you know what setting to what size screw or what is the general rule of thumb about using the power tools small screw what torque? long 15 inch screw what torque etc. I can never get it right

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  • Anonymous Mar 21, 2014

    I loved my Dreml 1120 7.2v Driver...great little screwdriver. It just basically came apart while screwing in a screw. Has this tool been discontinued by Dreml?? Was there a recall on this item?



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Hi, they usually list the torque to screw size ratio in the instruaction manual. If you cant locate yours many companies list their instruction manuals pn the web on their home page, or you can sneek a peak at a hard ware store on a similar drill.
The usually rule for small screws is torque 1-4 on small screws.
Otherwise practice makes perfect & different types of timber will affect when the torque kicks in.
I still believe that an impact driver is better than a drill with screws as it impacts the screw in & this gives you better control. It will actually slow the screw down & you can recess it just perfectly. The drawback is that it can snap small screws when driving into soft timber. (but you can always predrill)

Posted on Nov 01, 2008


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Hello, W/D here.

A very good question......A drill holds a bit and rotates it at a given speed. This speed can be variable, allowing the speed of the drill bit to be better matched to the material being drilled. The output from the drill motor goes directly to the chuck, and the power is directly applied to the drill bit. Some drills can generate a tremendous amount of direct torque, due to the nature of their gearing. Most of the better drills have planetary gears in them.
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Best regards, --W/D--

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