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A cordless drill with hammer function, usually called a hammer drill, adds a rapid in-and-out percussive action to normal rotation. That lets you drill into masonry, concrete and block without burning out bits. This guide explains how the mode works, how to choose a cordless drill with hammer capability for your work, and how to drill cleanly and safely into hard materials.

What a Cordless Drill with Hammer Mode Actually Does

In standard drill mode, the bit only rotates. Hammer mode adds a second motion: a cam or clutch mechanism pushes the chuck forward and back thousands of times per minute, so the bit chips away at the surface while it spins. The impacts are short and fast, which is why the feature works on brick and concrete but is rarely useful in wood or metal.

Most cordless models offer two or three modes, typically drill-only, hammer-plus-drill, and sometimes a clutch or screwdriving setting. Some tools also have a separate hammer-only function, but that is uncommon on drills and more common on rotary hammers. For a broader comparison of the two tool types, see Hammer Drill vs Rotary Hammer: Which Do You Need?.

Step 1: Confirm You Need Hammer Mode

Hammer mode is the right choice for masonry, concrete, cinder block and mortar joints. It is the wrong choice for wood, metal, plastic or drywall, where the impacts can cause splintering, bit walking or damage to the surface. Before you switch modes, identify the material and check whether a standard masonry bit is sized correctly.

If your holes are larger than about 1 inch in concrete or you drill all day on site, a rotary hammer will outperform a drill. The overview in Hammer Drills: When You Need Hammer Mode (and When You Need a Rotary Hammer) explains where the line falls.

Step 2: Choose the Right Cordless Drill with Hammer Feature

Not every drill with a hammer setting performs the same way. Check these factors before you buy:

  • Impact rate and torque: Manufacturers list blows per minute and maximum torque in inch-pounds. Higher numbers generally mean faster masonry drilling.
  • Chuck type: A keyless chuck with at least 1/2 inch capacity handles most masonry bits. SDS-style chucks are a different system and belong to rotary hammers.
  • Battery platform and voltage: Hammer drills tend to draw more current, so pick a voltage class that matches your existing batteries. The guide to 12V vs 18V/20V Max vs Higher-Voltage Cordless Tools covers the trade-offs.
  • Weight and balance: Overhead work and long masonry sessions reward a lighter tool with a balanced grip.
  • Clutch settings: A good clutch protects your wrist when the bit binds, which is more likely in hammer mode.

If you are shopping for the whole kit at once, Best Cordless Hammer Drills and How to Evaluate a Cordless Drill Before You Buy are good places to compare specifications side by side.

Step 3: Gather the Right Bits and Accessories

Hammer mode only works well with the correct bits. Use carbide-tipped masonry bits sized to the anchor or fastener you plan to install. Dull or chipped carbide will slow drilling and generate excess heat.

  1. Masonry bit set in the sizes you need, typically 1/4, 3/8 and 1/2 inch.
  2. Depth stop or tape to mark the hole depth.
  3. Shop vacuum or brush and bulb for clearing dust from the hole.
  4. Safety glasses, hearing protection and a dust mask rated for silica dust.
  5. Hammer and masonry nails or wedge anchors if you are setting fasteners after drilling.

For bit selection by material, see Drill Bit Types: Which Bit for Wood, Metal, Masonry and Tile and the more detailed How to Evaluate Drill Bits, Saw Blades and Tool Batteries.

Step 4: Drill Into Masonry in Hammer Mode

Follow this sequence for consistent results:

  1. Mark the hole. Use a center punch or a small dimple with a nail so the bit does not skate.
  2. Set the mode. Turn the mode collar to hammer-plus-drill. Confirm the clutch is set to drill, not clutch, so the bit keeps rotating.
  3. Start slowly. Begin on low speed to seat the bit, then increase to full trigger pressure.
  4. Apply steady pressure. Push straight in without leaning. Let the hammer action do the work rather than forcing the tool.
  5. Clear dust regularly. Pull the bit out every 20 to 30 seconds on deep holes and blow or vacuum the debris.
  6. Check depth. Use your depth stop or tape. Stop about 1/4 inch past your anchor length so it seats fully.
  7. Clean the hole. Remove all dust before inserting an anchor, or the fastener will not hold.

Expected Performance by Material

Performance varies with the masonry, bit diameter and tool. The table below shows general guidance based on common manufacturer recommendations and typical contractor practice, not guaranteed results.

Material Suggested Mode Typical Bit Notes
Brick (solid) Hammer-plus-drill Carbide masonry, 1/4 to 3/8 inch Work slowly to avoid cracking mortar joints.
Concrete Hammer-plus-drill Carbide masonry, 3/8 to 1/2 inch Expect slower progress; clear dust often.
Cinder block Hammer-plus-drill, low to medium speed Carbide masonry Hollow cores can grab the bit; watch for sudden drops.
Tile (ceramic or porcelain) Drill only, or hammer off Diamond-tipped or tile bit Impacts crack tile; use water or steady low speed.
Wood, metal, drywall Drill only Standard twist or spade bit Hammer mode damages these materials.

For material-specific technique, read How to Drill into Tile, Brick and Concrete.

Common Mistakes to Avoid

  • Leaving hammer mode on for wood or metal. Switch back to drill-only as soon as the material changes.
  • Pressing too hard. Excess force slows the bit, overheats the motor and can stall the tool.
  • Using dull bits. Worn carbide makes the tool work harder and shortens battery life.
  • Skipping dust removal. Packed dust blocks the bit and weakens anchor grip.
  • Drilling into unknown materials. Check for wiring and pipes with a stud finder rated for AC and metal before drilling walls.

Tips for Better Results

  • Keep a spare battery charged. Hammer mode drains packs faster than standard drilling.
  • Let the tool cool between long masonry holes if it becomes hot to touch.
  • Mark the depth on the bit with tape so you can see when you reach the target depth.
  • For overhead work, drill in short bursts and support the tool with both hands.
  • If the bit stops advancing, back out, clear dust and check whether you are hitting a steel rebar or a void.

Carbide masonry bits are the single most important accessory for hammer mode, since they handle the impacts and heat that dull or standard bits cannot. Look for a set with sizes that match your anchors. View on Amazon

A compact shop vacuum with a small nozzle clears dust from deep holes faster than a brush. View on Amazon

A depth stop attachment for your bit helps you repeat the same hole depth across a wall of anchors. View on Amazon

Wraparound safety glasses and a respirator rated for silica dust protect you from chips and fine dust during masonry work. View on Amazon

FAQ

Can I use hammer mode on wood?

No. Hammer mode is designed for masonry and concrete. Using it on wood, metal or drywall can cause splintering, bit walking and surface damage. Switch to drill-only for those materials.

What is the difference between a hammer drill and a rotary hammer?

A hammer drill adds a percussive action to a standard drill chuck and handles smaller holes in masonry. A rotary hammer uses a piston mechanism and an SDS chuck, delivering much more impact energy for larger holes in concrete.

Do I need special bits for a cordless drill with hammer function?

Yes, for masonry you should use carbide-tipped masonry bits. Standard high-speed steel bits dull quickly and do not hold up to the impact action.

Why is my drill slowing down in hammer mode?

The most common causes are excess pressure, a dull bit, a clogged hole or a battery that is running low. Ease up on pressure, clear the hole and check the bit condition.

Can a cordless hammer drill make holes in concrete for anchors?

Yes, for small to medium anchors. For large-diameter holes or frequent concrete work, a rotary hammer is more efficient. Always clean the hole fully before setting the anchor.

How do I avoid hitting wiring or pipes?

Use a stud and wire detector rated for AC and metal, check the work area, and consult a licensed electrician or plumber if you are unsure what is inside a wall. Safety in this area is worth extra caution.

Is hammer mode bad for the drill?

Used as intended on masonry, hammer mode is a normal part of the tool’s design. Overheating and forcing the tool shorten its life, so allow cool-down time on long jobs and avoid using it outside its intended materials.

How long does a battery last in hammer mode?

Runtime depends on the battery size, bit diameter, material and pressure. Hammer drilling draws more current than standard drilling, so plan on swapping or charging batteries more often on masonry jobs.

Conclusion

A cordless drill with hammer function is a practical tool for masonry, concrete and block when you match the mode, bit and technique to the material. Check impact specs, use carbide bits, clear dust often and switch back to drill-only for anything softer. With those habits, you can set anchors and drill holes cleanly without wearing out your tools or your patience.