Rotec SDS+ Quattro-X hammer drill Ø 8.0 x 400/465

The drill bit is intended for drilling in concrete and stone. The SDS+ shank clicks into the drill holder of a hammer drill or combi hammer, without needing a key. On this page you can find the drill bit with article number 202.0805, so you can easily find it again or reorder it.

Which jobs should you choose an SDS plus drill bit 8x400 for?

With a diameter of 8 mm and a long drilling length, you can drill deeper into material than with a standard short bit. This is useful for holes for plugs or anchors that must go deep into concrete, masonry or natural stone, and for passing pipes and cables through thick walls. For lightweight materials or surface work, a shorter bit is often sufficient and easier to handle.

Suitable for your machine

First check whether your machine has an SDS+ holder. A bit with an SDS+ shank does not fit in an ordinary keyed chuck, and vice versa. Also pay attention to the power of the machine: a long 400 mm bit requires a hammer drill that is strong enough to transfer the impact energy properly.

Tips for drilling with a long hammer drill bit

Hold the machine straight against the workpiece and let the hammer action do the work, without applying extra force. Pull the bit back occasionally while drilling, so that drill dust can be removed. This prevents jamming and limits overheating. When drilling in stone and concrete, always wear eye and hearing protection and preferably a dust mask.

Choosing the right size

Choose the diameter based on the plug or anchor you want to fit, and the length based on the required drilling depth. Allow some margin: the hole should be slightly deeper than the plug or screw is long, so there is room for drill dust. If you need a different size, see the other accessories for tools.

Frequently asked questions

Fits this drill in every drill machine?

No, the drill has an SDS+ shank and only fits machines with an SDS+ holder, such as a hammer drill or combi hammer.

What does 400/465 mean in the product name?

The first number is the useful drilling length of 400 mm, the second is the total length of 465 mm including the shank.

Can I drill into concrete with this drill bit?

Yes, the hammer drill is intended for concrete and stone. Use it in combination with the hammer function of your machine.