OPERATION

Excessive side force cocks the tool in its bore, pre-vents proper movement and causes premature tool shank and bushing wear. Since the breaker tool bit must be pushed up into the breaker to operate, a binding tool prevents the breaker from operating correctly. Binding also causes the tool bit and tool bushings to seize and often results in breakage of one or more breaker com- ponents. Always direct the down pressure force in a line toward the point of tool contact with the work.

NOTICE

DO NOT pry with the tool bit and breaker.

Prying will damage the tool bit and associated

breaker components.

Moving rocks with the tool bit is another method of bind- ing the tool bit. This practice should be avoided as it may cause tool bit failure.

Rebar reinforced concrete introduces the problem of concrete chunks being held together by the rebar after the concrete has been broken. The best approach to this problem is to use a chisel point tool which permits cut- ting the rebar with the breaker. Another method is to pe- riodically cut the rebar with an oxyacetylene torch.

type can be experienced in trench work where obtain- ing striking contact with the work surface is difficult or the wrong tool bit is used, or in flat rock work where the operator fails to stop operation of the breaker when slip- page, fracturing or material break-through occurs.

Blank firing as a result of operator error occurs when the tool bit is not in contact with the work surface to be bro- ken and is allowed to drop down in the lower body cav- ity so that the piston is not able to strike it. Instead, the downward movement of the piston will be stopped by an internal oil cushion located at the bottom of the piston’s stroke and the energy of the piston will be absorbed by breaker components and excavator boom components. Blank firing of this type can be experienced when the operator fails to stop operation of the breaker when the material fractures or material break-through occurs, or during re-positioning of the breaker.

While blank firing cannot always be avoided, it can be kept to a minimum by avoiding the above conditions as much as possible.

BLANK FIRING

To understand “Blank Firing”, the operator needs to be aware that if the tool bit is not pressed against the work surface the tool bit will drop down in the lower body cavity far enough so that the piston cannot strike it. Blank firing occurs whenever the breaker is operating and the piston is not able to strike the tool bit solidly or not strike the tool bit at all. Blank Firing accelerates wear and tear on breaker and excavator components and may result in failure of one or more components. Excessive blank fir- ing may be considered equipment abuse and may result in voiding warranties.

Break-through or difficult surface contact results in blank firing when the material being broken fractures and the tool bit is no longer in “hard contact” with the material but is still pushed high enough in the lower body cavity so that the piston can strike it. In this condition, the pis- ton strikes the tool bit and the tool bit, in turn, is driven against the retaining pins because it is not in sufficient contact with the material to be broken. The energy is ab- sorbed by the retaining pins, other breaker components, and the excavator boom components. Blank firing of this

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Stanley Black & Decker MBX15 user manual Blank Firing
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MBX15 specifications

The Stanley Black & Decker MBX15 is a robust and versatile tool designed for professionals and serious DIY enthusiasts alike. Engineered to meet the needs of various applications, this machine stands out in the crowded marketplace of power tools, providing exceptional reliability and performance.

At the heart of the MBX15 is its powerful motor, which delivers impressive torque and speed, enabling users to tackle a wide range of tasks with ease. The efficiency of this motor allows for quick job completion without sacrificing quality. One of the standout features of the MBX15 is its lightweight design, making it easy to handle during extended use. The ergonomically designed handle ensures maximum comfort, reducing fatigue and enhancing user control.

The MBX15 incorporates advanced technologies that set it apart from its competitors. For instance, it features an innovative vibration-dampening system that minimizes user discomfort. This technology is especially beneficial during prolonged operations, allowing for greater precision and fewer errors. Additionally, the tool is equipped with a quick-change system, enabling users to switch attachments seamlessly, thus enhancing productivity.

A distinctive characteristic of the MBX15 is its versatility. It comes with a variety of attachments specifically designed for different applications such as grinding, polishing, and even surface preparation. This multifunctionality makes it an essential addition to any workshop or job site.

The MBX15 also prioritizes safety, incorporating several features to protect users during operation. The integrated safety switch prevents accidental start-ups, and the durable housing safeguards the internal components, ensuring longevity and reliability even in demanding environments.

In terms of design aesthetics, the MBX15 boasts a sleek and modern look, complete with a sturdy build that reflects the quality synonymous with the Stanley Black & Decker brand. This tool not only delivers on performance but also complements the professionalism of its users.

In conclusion, the Stanley Black & Decker MBX15 is a formidable tool equipped with a powerful motor, innovative technologies, and a user-friendly design. Its versatility, coupled with safety features and comfort, makes it an exceptional choice for any project, whether on a professional job site or at home. With its blend of power and efficiency, the MBX15 is truly a reliable partner for all your grinding and surface preparation needs.
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