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| Hitachi introduces low vibration grinders  Hitachi Power Tools unveiled its first low vibration grinders featuring Hitachi's patented User Vibration Protection (UVP) technology that reduces full-load tri-axial vibration by up to 30% significantly decreasing end user fatigue. The angle grinders feature vibration absorbing main and side handles, unique stator coils to improve cooling of the motors and new gear structures that dampen noise by up to 60% - all packaged into lightweight and ergonomically designed tools.Vibration is a hot topic in the power tool world these days. Specifically the adverse health affects for the operator of the tool. The European market has been the first to take action to protect workers from Hand-Arm Vibration Syndrome (commonly referred to as "white finger" syndrome) by placing the responsibility on employers to minimize risk. The American National Standards Institute (ANSI) has recently adopted similar standards for measurement and exposure to vibration from hand-held power tools, but there are not any specific regulations in the US at this time. Tool operator safety is a top priority for Hitachi. Hitachi's new angle grinders employ UVP technology via flexible main and side handles that reduce full-load tri-axial vibration by up to 30% - the lowest vibration level in their class (3.3 m/s2). The tri-axial measurement is the sum of three directions of vibration produced (vertical, horizontal, side to side) and better reflects real world exposure. Tri-axial measurements may be as much as 1.5 to 2 times higher than single axis measurements. Although manufacturers are not required to disclose vibration levels, they may publish them in single axis meters per second squared (m/s2) which appears superior since the lower the stated level, the less harmful the tool to an end user. However, tri-axial levels are a truer testament to the effects of vibration being produced by any particular tool. The new vibration absorbing main handles on Hitachi's UVP grinders are connected to the motor housing with moving joint mechanisms and padded dampers (refer to diagram attached). These mechanisms and dampers reduce vibration and therefore reduce user fatigue, allowing the user to work with the tool for longer periods of time. The 3-position adjustable side handles and main handles are also covered in Hitachi's patented Elastomer compound which absorbs vibration while additionally provides a comfortable and secure grip. write your comments about the article :: © 2007 Construction News :: home page |