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rotary hammers

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  • rotary hammers

    I bought the 1 1/8 inch version of the Bosch roto-hammer, and I was stoked. However, in the less than 4 weeks since I bought it, I noticed the chuck was getting a bit loose. Now, I admit I have used it for some pretty heavy chipping, but is this normal?
    I emailed Bosch, and they say that SDSplus hammers aren't designed for much chipping, and that I should use an SDSmax or spline if I am going to do much heavy chipping. Anyone know if this is true? I am especially interested in anyone's experience with Hilti versus Bosch roto-hammers. Thanks.