Question about Makita Rotary Hammer 450 Rpm, 2500 Bpm, 9.6 Amp, ModelNo. HR4000C

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Drive systems Question

What is the difference between the drive systems?

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SDS (or Slotted Drive System) bits for hammer drills/rotary hammers allow the bit to slide in the chuck and enhance the hammering action of the tool. For most applications, these bits provide plenty of torque. SDS Max bits are similar to SDS bits, but have larger shanks and come in larger sizes than SDS bits. These powerful bits are useful in industrial applications.

Posted on Aug 27, 2008

  • Robert Lewis
    Robert Lewis Jan 05, 2014

    I bought two when I bought my hammer drill that had a 3 jaw, standard chuck. I ended up cutting off the portion where the slots were and using the bits that way. Work fine.


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