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MB 750 Hydraulic Breaker Offers High Operational Efficiency

Fri July 24, 2009 - National Edition
Construction Equipment Guide

The MB 750, Atlas Copco’s newest addition to its line of medium-duty hydraulic breakers, brings power, dependability and flexibility to the job site. With high efficiency and output-to-weight ratio, the MB 750 also features a new double retainer bar system and DustProtector II to maximize the service life of the tool.

Powered by a combination of oil and gas, the MB 750 recovers energy by maximizing the recoil effect. This boosts the output power of the breaker without increasing the hydraulic input power of the carrier, which results in less fuel consumption during operation.

The MB 750 also achieves greater performance and productivity without adding weight to the carrier or requiring the use of a larger carrier to handle the load. In addition, the MB 750’s general versatility and compatibility with a broad spectrum of excavators means more options on the job site, according to the manufacturer.

Atlas Copco breakers are among the quietest on the market, and the MB 750 is no exception at 118 dB (A). Atlas Copco’s VibroSilenced system isolates the percussion mechanism acoustically from the external guide system. Moreover, the VibroSilenced system prevents damaging vibrations that could be detrimental to both the carrier and the operator.

A new feature on the MB 750 is the double retainer bar system, which maximizes the service of the tool and retainer system. Extra long retainer bars provide a maximum contact surface to the tool and the lower hammer, and they can be used on both sides for extended service life. Double retainer bars offer higher wear resistance than a retainer pin and are a reliable and proven locking system for the locking pins, according to the manufacturer.

The MB 750 also is available with the DustProtector II, a two-stage sealing system with coarse and fine strippers that prevents the penetration of abrasive dust into the lower section of the breaker. DustProtector II also keeps the lubricant around the wear bushing for a longer period of time, lowering grease consumption. The system reduces wear on the bushings and the hammer and protects against damage.

The MB 750 is ideal for secondary breaking, demolition, excavation and trenching, tunneling, and special applications such as underwater — or any job that calls for a hydraulic breaker.

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