Epiroc AB, the subsidiary of Atlas Copco Group with U.S. headquarters in Commerce City, Colorado, has introduced its SB series hydraulic breaker attachments that come standard with an internal water port for dust suppression, a feature that can assist in compliance with Washington-based U.S. Occupational Safety and Health Administration (OSHA) final silica rule dust regulations.
With an integrated water channel, operators can spray water at the source of dust creation to keep dust levels down. The integrated channel is designed to improve the working environment, enhance visibility and prevent dust from seeping into the bushings. SB breakers are also designed to protect operators and equipment by reducing noise and vibration.
Epiroc SB series breakers are designed for the 0.7- to 24-ton carrier class and are used in a wide range of applications that include demolition and renovation work, construction projects, tunneling, dredging and pile driving. Mining and quarrying applications range from overburden removal and scaling to primary, selective rock breaking.
SB series breakers include models to match a micro or mini excavator, backhoe, skid steer loader or demolition robot with service weights ranging from 120 pounds for the SB 52, the smallest breaker of the SB series, to 2,350 pounds for the SB 1102. Oil requirements range from just 3.2 gallons per minuts (gpm) at 1,450 to 2,175 pounds per square inch (psi) to 35 gpm at 1,185 to 2,610 psi.
Epiroc’s energy recovery technology is designed to absorb recoil energy, mitigating anvil effect and increasing overall performance. The result is higher impact rate from the same hydraulic input with less vibration.
All SB breakers come prepared for compressed air supplies without the need for modification or additional installations. Side-positioned ports can reduce risk to hoses and provide easy access for connecting compressor, water connection or ContiLube II micro lubrication supply lines or for monitoring operating pressure.
No special tools or adaptor fittings are required for servicing SB series breakers. The SB SolidBody concept uses a patented internal component design integrating the impact mechanism and the guide system into a single piece.
The accumulator is cast into the body and gas pressure is designed to be easily checked and adjusted. The supported diaphragm can reduce strain and distortion. Dual tool retainer pins can improve tool load distribution, require less grinding and protect against accidental damage to the tool and breaker.
Other standard features of SB breakers include integrated pressure relief valve for overload protection, auto start, air inlet for underwater applications, oil drainage plug, dust wiper, slip fit bushing and dual tool retainer bars for better support.