"Demolition hammer" redirects here. For the band, see Demolition Hammer.
For other uses, see Jackhammer (disambiguation).
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Jackhammer" – news · newspapers · books · scholar · JSTOR(December 2008) (Learn how and when to remove this message)
A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King.[1] Hand-held jackhammers are generally powered by compressed air, but some are also powered by electric motors. Larger jackhammers, such as rig-mounted hammers used on construction machinery, are usually hydraulically powered. These tools are typically used to break up rock, pavement, and concrete.
A jackhammer operates by driving an internal hammer up and down. The hammer is first driven down to strike the chisel and then back up to return the hammer to the original position to repeat the cycle. The effectiveness of the jackhammer is dependent on how much force is applied to the tool. It is generally used like a hammer to break the hard surface or rock in construction works and it is not considered under earth-moving equipment, along with its accessories (i.e., pusher leg, lubricator).[2]
In British English, electromechanical versions are colloquially known as "Kangos".
Also the terms drill and breaker (demolition hammer) are non-interchangeable and refer to two differing distinct types of jackhammer (regardless of their power source). A breaker cannot rotate it's steel (which for example may be either a chisel or spike) and relies on pure percussion shock to fracture and split material without cutting. Whereas a (pneumatic/hydraulic) drill both impacts and rotates, which enables a steel with a tungsten carbide tipped bit to cut into hard rock such as granite, typically to create holes for blasting. Normally only the pneumatic drill would be used at geological operations such as quarrying or mining and only the breaker at civil operations such as construction and road repair.
^US patent 550324 Steam or Pneumatic Engine
^"POWER TOOL TYPES AND APPLICATIONS - Gibadi". gibadicom. Retrieved 2023-12-27.
A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a...
The Pancor Corporation Jackhammer is a 12-gauge, blow-forward gas-operated bullpup automatic shotgun designed in 1984 and patented in 1987. Only three...
My Jackhammer is the debut album from the Benevento/Russo Duo, released in 2003 under their own production. "Raindrops Whisper Words" - 9:21 "Sabia" -...
Vincent Kennedy McMahon (/məkˈmæn/ mək-MAN; born August 24, 1945) is an American businessman and former professional wrestling promoter. McMahon, along...
Nutcracker esophagus, jackhammer esophagus, or hypercontractile peristalsis, is a disorder of the movement of the esophagus characterized by contractions...
The Jackhammer Massacre is a 2004 horror film written and directed by Joe Castro, and co-written by Daniel Benton. It stars Kyle Yaskin and Aaron Gaffey...
audio, ATV-UTV Audio, home audio, and portable audio products. The MTX Jackhammer 24 is a 24-inch square subwoofer and one of the largest available on the...
witness girls sneaking out of Jake's room. 163 2 "A Bottle of Wine and a Jackhammer" James Widdoes Story by : Chuck Lorre & Lee Aronsohn & Susan Beavers Teleplay...
me around for long." There are seven game modes: Death Snatch, Blitz, Jackhammer, Annihilation, and Extraction, Domination, and Campaign, most of which...
In August 2011, Wells made a cameo appearance in the independent film Jackhammer, shot in Victoria, British Columbia. Wells also appeared as a radical...
1980s, but was popularized by Bill Goldberg in WCW, who called it the Jackhammer. Nia Jax also uses this move. former WWE/NXT superstar Mason Ryan also...
2002 season and the Jackhammers had been preceded in Joliet by the minor league Joliet Convicts, who began play in 1890. The Jackhammers first playoff appearance...
hammer may refer to: Air hammer (fabrication), a pneumatic hand tool Jackhammer, a pneumatically driven tool used to break up rock and pavement Nail gun...
Jennifer Mary Video The Commuter Julia Female Guest In Hotel Short 2013 Jackhammer Groupie 2015 What Are Men Doing! 2 Herself Connected Jackie Short 2016...
for Herkimer Diamonds HerkimerHistory.com Video of mining for Herkimer Diamonds with a jackhammer Book Review: Collector’s Guide to Herkimer Diamonds...
Often used as a demolition tool, they may be mounted on a hammer drill, jackhammer, or hammered manually, usually with a heavy hammer of three pounds or...
his debut match at Backlash on April 27, following three spears and a Jackhammer. Goldberg went undefeated over the subsequent half-year, defeating 3-Minute...
Survivor Series, respectively. After Goldberg won the match following a Jackhammer, both men were given a Stone Cold Stunner by Austin on their way out....
combines a jackhammer-like mechanism with a drill High Frequency Impact Treatment hammer – for after-treatment of weld transitions Jackhammer Steam hammer...
use in automobiles is the MTX Jackhammer by MTX Audio, which features a 22-inch (560 mm) diameter cone. The Jackhammer has been known to take upwards...