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General Construction & Site Management · Glossary Term

Jackhammer: Definition, Working Principle and Site Uses

What a jackhammer is, how its piston breaks concrete, which type suits your job, what it costs in India and how to run one safely.

On this page
  1. What Is a Jackhammer and How Does It Work?
  2. Where Does the Name Come From, and Who Invented It?
  3. Which Power Types Can You Choose From?
  4. What Is a Jackhammer Used For?
  5. How Do You Pick the Right Weight Class and Bit?
  6. What Does a Breaker Machine Cost in India: Rent or Buy?
  7. How Do You Operate a Breaker Safely?
  8. What Upkeep and Quieter Alternatives Are There?
Summary — what you need to know
  • A jackhammer breaks material by repeated blows, not by spinning like a drill.
  • It runs on compressed air, mains power, hydraulic oil or petrol.
  • Light 5 kg electric breakers suit tiles and plaster; slabs and roads need 16 kg and heavier.
  • Pneumatic models need a compressor sized to the tool's air use in cfm.
  • Noise, vibration and silica dust are the main risks.

A jackhammer is a power tool that drives a steel bit up and down very fast to break concrete, asphalt, masonry or rock. On Indian sites, people also call the jackhammer a breaker machine, demolition hammer or pneumatic hammer.

> 120 dB
Sound near the operator's ears from a pneumatic jackhammer
90 dB(A)
Karnataka Factories Rules limit for 8 hours a day
45–81 cfm
Air use of hand-held pneumatic breakers at 90 psi, one maker

What Is a Jackhammer and How Does It Work?

A jackhammer works by slamming a piston onto the top of a chisel or bit hundreds or thousands of times a minute. Each blow cracks the surface a little, and repeated blows break the material apart.

In an electric model, a motor-driven piston compresses air that throws a striker onto the bit. A pneumatic model runs on compressor air.

The bit hammers straight down and does not rotate, so a jackhammer is not a drill.

Cutaway of an electric jackhammer showing the motor, piston, air cushion, striker and bit breaking concrete
Four tools, one name

A pavement breaker smashes roads and slabs. A demolition hammer is an electric breaker. A rotary hammer drills holes and is too light for thick concrete. A rock drill bores holes in rock.

Where Does the Name Come From, and Who Invented It?

"Jackhammer" is the North American and Australian name for a hand-held breaker; British English says pneumatic drill. The tool grew out of 19th-century rock drills built for mining and tunnelling.

1806

Steam drill patent

Samuel Miller patents a steam-powered drill.

1849

Percussion drill

Jonathan J. Couch patents the first American percussion drill.

1850–51

Compressed air

Joseph W. Fowle runs his percussion drill on compressed air.

1861

Tunnel-ready rock drill

Germain Sommeiller refines Thomas Bartlett's 1855 rock drill.

Which Power Types Can You Choose From?

Jackhammers run on four power types. Pick the one your site can supply.

Jackhammer types compared

Check specs on the maker's sheet
TypeNeeds on siteBest jobMain drawback
Electric Most homesMains socket or generatorTile, plaster, floor and wall breakingWeaker than heavy air tools on thick concrete
PneumaticAir compressor, hose, fittingsRoads, trenches, thick slabsCompressor cost; very loud
Hydraulic breakerExcavator, backhoe or skid steer loaderHeavy demolition, rock, quarriesMachine attachment, not a hand tool
PetrolFuel onlyRemote sites without powerExhaust fumes; not for indoor use
A hydraulic breaker must match its carrier machine's weight and oil flow.

What Is a Jackhammer Used For?

A jackhammer breaks hard material that hand tools cannot shift quickly.

  • Breaking concrete slabs, beams and columns during renovation
  • Cutting trenches for pipes and cables
  • Lifting asphalt and road surfaces
  • Breaking rock in quarries, mines and tunnels

Higher concrete grades take longer to break; our concrete mix ratio guide explains grades.

How Do You Pick the Right Weight Class and Bit?

Choose a jackhammer by matching its weight and impact energy to the material.

Jackhammer class by job

Example specs from maker listings
JobClassExample weightExample impact
Tile, plaster, light chippingLight electric5.6 kg7.5 J, 2,850 bpm
Floor slab, wall Default pickHeavy electric16.9 kg41 J, 1,300 bpm
Road, trench, thick concretePneumatic breaker20–29 kg48–63 cfm air
Bosch GSH 5 HX, GSH 16-30 and Chicago Pneumatic CP 1210/1260 specs.

Use a pointed moil point for concrete and rock, a flat chisel for channels, a wide spade for tiles and an asphalt cutter for tarmac. The bit's shank must fit the chuck, such as SDS-max or hex.

BPM is not power

Blows per minute (BPM) is speed; joules measure how hard each blow lands. For thick concrete, compare joules first.

Compressor sizing
Compressor cfm = tool air use × number of tools × (1 + allowance)
Take air use at 90 psi from the datasheet; the allowance covers hose losses and wear.
Worked exampleTwo 20 kg pneumatic breakers on one driveway slab
Air use per breaker at 90 psi (CP 1210 class)48 cfm
Two breakers: 48 × 296 cfm
Add an assumed 20% allowance: 96 × 1.2115.2 cfm
HireA compressor of at least 116 cfm at 90 psi (6.2 bar)
60-minute delivery

Breaking out a floor or slab?

Tools, safety gear and rebuild materials delivered across Bengaluru.

Tools & HardwareSafety GearCementTiles
Shop nowGet a price listBengaluru · open 8 am–8 pm, all days

What Does a Breaker Machine Cost in India: Rent or Buy?

A 5 kg electric jackhammer costs about ₹3,200 to ₹10,800 in Bengaluru, and a 16 kg model about ₹15,300 to ₹38,500. Ranges are from IndiaMART listings checked on 10 Nov 2026.

Rent or hire

One-off jobs

Removing one floor or patio.

  • No upfront purchase
  • Right class for each job
  • Operator can come with the tool

Buy

Frequent use

Contractors breaking out every week.

  • Upfront cost, then free use
  • Bits and servicing are on you
  • You need a trained operator

Breaking rates vary by slab thickness, so get two quotes from a civil contractor.

How Do You Operate a Breaker Safely?

Use a jackhammer safely by preparing the area, wearing protective gear and breaking in small sections.

  1. Inspect: check the tool, cable or hose, then lock in the bit.
  2. Survey: find buried pipes, cables and steel rebar before you start. Slabs hide TMT bars.
  3. Stance: feet apart, both hands on the grips, and let the tool's weight do the work.
  4. Break: start near an edge and take small bites.
  5. Shut down: disconnect power or air before changing bits.
  • Ear defenders or plugs
  • Goggles or a face shield
  • Respirator rated for fine dust, not a cloth mask
  • Anti-vibration gloves, safety shoes and a helmet
Silica dust, vibration and neighbours

Breaking concrete releases respirable crystalline silica, which causes silicosis. Wet the surface or use dust extraction, and rotate operators to limit vibration white finger.

India's Noise Pollution Rules, 2000 cap residential areas at 55 dB(A) by day and 45 dB(A) from 10 pm to 6 am.

What Upkeep and Quieter Alternatives Are There?

Maintain a jackhammer by lubricating it as the maker specifies, replacing blunt bits and checking hoses or cables before each shift. Weak blows usually mean a blunt bit or low air pressure.

Near homes or hospitals, quieter options include diamond concrete saws, hydraulic crushers and chemical (silent) demolition.

Frequently Asked Questions

What is a jackhammer and how does it work?

A jackhammer is a percussion tool that breaks hard material. A piston strikes the bit very fast, and the blows crack the surface apart.

What is a jackhammer used for?

A jackhammer is used to break concrete slabs, remove tiles, cut trenches for pipes and cables, lift asphalt and break rock.

What materials is a jackhammer used to break up?

A jackhammer breaks concrete, reinforced concrete, asphalt, brick and stone masonry, tile beds and rock. Rebar must be cut separately.

What power sources do jackhammers run on (compressed air, electric, hydraulic)?

Jackhammers run on compressed air from a compressor, mains electricity, hydraulic oil from a carrier machine, or petrol. Electric models suit most home jobs.

Is a jackhammer a type of drill?

No. A drill spins its bit to bore a hole, while a jackhammer hammers its bit straight down to break material.

Why is it called jackhammer?

"Jackhammer" is the name used in North America and Australia for a hand-held breaker. British English calls it a pneumatic drill.

Who invented the jackhammer?

No single person invented it. Samuel Miller patented a steam drill in 1806, Jonathan J. Couch patented a percussion drill in 1849 and Joseph W. Fowle used compressed air around 1850–51.

What are the advantages of using a jackhammer on a construction project?

A jackhammer breaks concrete and rock far faster than a hand chisel and sledgehammer. It is portable and takes different bits for breaking, cutting and scraping.

Reviewed by

HomeRun Team

The HomeRun editorial team researches and writes our building guides.