Breaker (hydraulic)
File:Hydraulic breaker attachment on a skid-steer loader.webm
A breaker is a powerful percussion hammer fitted to an excavator for demolishing hard (rock or concrete) structures. It is powered by an auxiliary hydraulic system from the excavator, which is fitted with a foot-operated valve for this purpose. Additionally, demolition crews employ the hoe ram for jobs too large for jackhammering or areas where blasting is not possible due to safety or environmental issues.
Breakers are often referred to as "hammers", "peckers", "hoe rams" or "hoe rammers". These terms are popular and commonly used amongst construction/demolition workers.[1][2] The first hydraulic breaker, Hydraulikhammer HM 400, was invented in 1967 by German company Krupp in Essen (today Swedish company Epiroc).[3]
Specifications
| Suitable Excavator (tonne) | Suitable Excavator (lbs) | Chisel Diameter (mm / inches) | Total Weight (kg) | Total Weight (lbs) | Overall Length (mm / inches) | Operating Pressure (kg/cm²) | Oil Flow (l/min) | Impact Rate (BPM) | Energy Class (ft lb) | Hose Diameter (inch) |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.8 - 2.0 | 1760 - 4400 | 40 / 1.75 | 115 | 253 | 983 / 38.55 | 90 - 120 | 15 - 25 | 800 - 1400 | 150 | 1/2 |
| 2.0 - 4.0 | 4400 - 8800 | 45 / 1.95 | 115 | 253 | 983 / 38.55 | 90 - 120 | 15 - 25 | 800 - 1400 | 650 | 1/2 |
| 2.0 - 4.0 | 4400 - 8800 | 53 / 2.08 | 180 | 396 | 1100 / 43.14 | 90 - 120 | 15 - 25 | 700 - 1200 | 650 | 1/2 |
| 4.0 - 7.0 | 8800 - 15400 | 75 / 2.95 | 421 | 926 | 1700 / 66.92 | 110 - 160 | 30 - 45 | 500 - 800 | 1000 | 1/2 |
| 7.0 - 11.0 | 15400 - 24200 | 85 / 3.34 | 577 | 1269 | 1920 / 75.59 | 120 - 170 | 45 - 85 | 400 - 700 | 1500 | 1/2 |
| 11.0 - 18.0 | 24200 - 39600 | 100 / 3.93 | 973 | 2140 | 2260 / 88.97 | 150 - 170 | 80 - 120 | 400 - 700 | 4000 | 3/4 |
| 19.0 - 28.0 | 41800 - 61600 | 140 / 5.50 | 1989 | 4375 | 2810 / 110.62 | 160 - 180 | 130 - 170 | 400 - 600 | 6000 | 1 |
| 28.0 - 40.0 | 61600 - 88000 | 155 / 6.10 | 2950 | 6490 | 3152 / 123.61 | 160 - 180 | 170 - 220 | 250 - 400 | 8000 | 1 |
| 40.0 - 55.0 | 88000 - 121000 | 175 / 6.88 | 4210 | 9262 | 3400 / 133.85 | 160 - 180 | 210 - 290 | 200 - 350 | 10000 | 1.25 |
See also
References
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- ^ New Mexico State Highway and Transportation Department - Hoe Ram Script error: No such module "webarchive".
- ^ Page Module:Citation/CS1/styles.css has no content."Mobile Hydraulic Hammer". Archived from the original on 2014-04-15. Retrieved 2014-04-14.
- ^ Page Module:Citation/CS1/styles.css has no content."The hydraulic breaker is now 50 years old". Archived from the original on 2019-09-05. Retrieved 2019-09-05.
External links
- Info on hydraulic breaker repairs and maintenance
- Comprehensive Guide to Hydraulic Hammers
- What is a Hydraulic Breaker? A Complete Guide to Its Uses and Capabilities
Bibliography
- Page Module:Citation/CS1/styles.css has no content.Association of Equipment Manufacturers (2010). Carrier Mounted Hydraulic Breaker: Safety Manual for Operating and Maintenance Personnel.
