Rotec hammer drill SDS-max Quattro-X Ø 20.0 x 400/520

When choosing a drill bit, you should look at more than just the diameter. The length, the shank and the type of work also determine whether a bit suits the job. Below you can read what to pay attention to before you order.

What do the dimensions ø20.0×400/520 mean

The first dimension, ø20.0, is the diameter of the hole the drill bit makes. The two length dimensions indicate the usable length and the total length. With a usable length of 400 mm, you can drill to approximately that depth. The total length of 520 mm includes the shank that fits in the machine. Check how deep the hole needs to be for your job, and allow for the space you need to operate the machine and bit.

SDS-max chuck and compatible machines

SDS-max is a chuck system for heavier hammer drills and combi hammers. It is larger than SDS-plus, so it does not fit every drill. Therefore, first check the manual or the machine itself to see which chuck your tool has. An SDS-max drill bit is used in a machine with an SDS-max chuck, not in a machine with a regular drill chuck or SDS-plus.

When to choose a hammer drill bit of this diameter

A 20 mm drill bit is often used for larger holes, for example for pipe penetrations, heavier fixings or anchors. The required diameter depends on what you want to place in the hole. For plugs, anchors or bolts, check the recommended drill diameter in the manufacturer's product information, and then choose the bit that matches.

Maintenance and use

A drill bit lasts longer if you do not force it unnecessarily and regularly check it for wear. Remove dust and drilling debris from the hole during the work. Always wear eye, hearing and dust protection when drilling in concrete.

Frequently asked questions

Does this drill fit every hammer drill?

No, this bit has an SDS-max chuck. It only fits machines with SDS-max. Check the chuck of your machine before you order.

How deep can I drill with this bit?

The usable length is 400 mm, the total length is 520 mm. The maximum drilling depth is therefore approximately 400 mm.

Which material is this hammer drill bit for?

A hammer drill bit is intended for stone-like materials such as concrete and masonry. For wood or metal, use other drill bits.