Symptoms
- Drill spins but doesn't add the hammering/percussion action
- Bit doesn't progress into concrete or brick
- No vibration or hammering sound in hammer mode
- Works fine on wood but not on masonry
Likely causes
- CommonMode selector not fully switched to the hammer/masonry iconA selector left between drill mode and hammer mode may not engage percussion.
- CommonUsing a standard twist bit instead of a masonry bitRegular bits aren't designed to survive or benefit from the hammering action and won't cut effectively.
- PossibleNot enough forward pressure appliedHammer action typically needs firm, steady pressure to engage the percussion mechanism, not just fast spinning.
- PossibleTool is a standard drill/driver without a hammer function at allNot all drills include hammer mode; check the tool's specifications.
- PossibleWorn or dull masonry bitA dull carbide tip won't make progress even with proper hammer action.
What to do
- Confirm the tool actually has a hammer drill function by checking the manual or the mode dial for a hammer icon.
- Rotate the mode selector fully onto the hammer/masonry icon, not left between settings.
- Switch to a proper masonry bit with a carbide tip rated for concrete or brick.
- Apply firm, steady forward pressure while drilling; hammer drills need this to engage percussion properly.
- Inspect the masonry bit tip for wear or dullness and replace if rounded.
- For large holes or dense concrete/block, consider that a standard hammer drill may be underpowered and a rotary hammer may be needed instead.
Tools and parts
- Masonry drill bit
Carbide-tipped masonry drill bit setSearch: “masonry drill bit set concrete”
When to call a pro
For frequent or large-diameter masonry work, a rotary hammer drill (a different, more powerful tool) will be far more effective than pushing a standard hammer drill beyond its capability.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.