Tom Hammel 2017-12-09 03:48:22
CORDLESS GRINDING AND SANDING FINALLY CUTS THE CORD The cordless revolution is at full throttle in the grinder and sander category. All but one of this roundup’s seven industry-leading companies are featuring new cordless solutions for this article, which is great news for users. MILWAUKEE “The biggest change in grinders has been the shift from corded to cordless,” says product manager Kevin Gee. “A major reason the gap between corded and cordless is being bridged is because of M18 FUEL cordless products, including our M18 FUEL cordless grinder. This was the world’s first cordless grinder to deliver true corded performance without the cord. “Delivering up to 10 times longer motor life and two times more run time, our M18 FUEL grinders were the first grinders on the market with the power to grind — and are fundamentally changing the way cordless tools are used on the job site today. In fact, we have best-in-class solutions now for our entire range of core applications.” In 2015, Milwaukee also introduced the world’s first cordless braking grinder solution – the M18 FUEL braking grinder. It stops the wheel in under two seconds with a kickback-reducing clutch. Its cordless design also eliminates a tripping hazard on the job site. “While existing cordless grinders are effective cut-off tools, the M18 FUEL braking grinder is the top cordless tool available today that can effectively grind, cut and surface prep.” The new M18 FUEL 1/4-inch die grinder can grind up to 20 minutes on a single charge, has up to 10 times longer motor life, and claims to remove up to two times more weld than any cordless die grinder on the market. With continued advancements in mechanisms and motor technology, grinders are getting smaller, more powerful and delivering greater productivity without sacrificing durability. “We also know that the new OSHA regulation on respirable crystalline silica dust is going to have an exceptionally positive impact on the overall health and safety of this nation’s tradesmen.” The new Occupational Safety and Health Administration (OSHA) regulation on respirable crystalline silica dust has been a major focal point in the industry. Because Milwaukee Tool provides a full range of corded and cordless grinders for all concrete cutting and surface prepping applications, it is crucial that we provide our users the ability to work more safely when using these tools. Recently, Milwaukee announced the largest expansion of its dust extraction system to date, all completely compliant with the new OSHA regulation. With the launch of an eight-gallon dust extractor and accessories, Milwaukee’s full lineup of rotary hammers and grinders are compliant through either Table 1 or Objective Data Requirements. The eight-gallon dust extractor at the heart of the system features an automatic filter cleaning mechanism to allow for sustained airflow at 148 CFM in dust-producing applications. DEWALT User protection and control are two of the main drivers of innovation in the grinder and sander categories. “DEWALT’s recently launched cordless brushless grinders feature E-Clutch, Brake, and Kickback Brake,” says Nate Pellerin, product manager. “The E-Clutch senses a pinch or stall of the wheel that could result in kickback and engages to shut the tool down. While this is happening, the Kickback Brake also engages, bringing the wheel to a stop quickly. These two features work in unison to reduce the force of the tool moving toward the user.” “A key trend in sander product design is the increasing emphasis on user comfort,” says product manager Cindy Drnec. “Sanding for long periods of time can lead to hand fatigue. By creating a design that delivers superior ergonomics combined with low vibration, we can really improve the user’s comfort and experience with the sander.” DEWALT’s new 5-inch random orbit sanders and 1/4-sheet sander have ergonomic designs, expanded rubber over-mold gripping surfaces and counterweights that help reduce vibration. The new OSHA Silica ruling (1926.1153) is changing the way DEWALT users go to work. This ruling requires the use of engineered controls, monitoring of exposure or objective data to reduce the user’s risk of exposure to respirable crystalline silica. This means investment in the proper equipment and setup time on the job site. “Dust control and containment is also important during sanding,” Drnec adds. “Our 5-inch random orbit sanders feature a rubber dust skirt that minimizes dust escaping around the pad, which improves dust collection efficiency while sanding. Their one-handed locking dust bag can be removed to allow the sanders to hook up to DEWALT dust extractors or universal connector systems for even greater dust collection and removal.” BOSCH Bosch engineers are on the forefront of tool design and delivery. As a case in point, its newest grinder, the model GWS18V-45C 18V EC brushless Connected-Ready 4 1/2-inch angle grinder, packs a ton of tech into a small package. It delivers the convenience of cordless grinder operation with advanced user control. “The Bosch GWS18V-45C grinder offers users the power they demand with additional safety and connectivity capabilities,” says Mike Iezzi, product manager. “In the grinder market, it’s not enough to have just great power or outstanding maneuverability alone. A great tool brings both to the table and that’s what the GWS18V-45C does. “The GWS18V-45C grinder delivers outstanding performance, including metal cutting, thanks to its powerful EC brushless motor design. This Bosch-exclusive design provides greater run-time and more power than similar cordless grinders with brushed motors, so professionals can rely on a cordless grinder that delivers 10,000 no-load rpm, but doesn’t forego power in favor of maneuverability.” The grinder offers plug-in connected- ready capability via an interface that works with the optional Bosch GCY30-4 Bluetooth connectivity module. This module interfaces with the free Bosch Toolbox app on a mobile phone. Users can change soft-start speed, set the LED brightness and receive battery charge and KickBack Control status updates. Drop control shuts the tool off if dropped and KickBack Control shuts down the motor in the event of a jam. Restart protection prevents accidental start-up during battery insertion. FESTOOL “Festool has recently introduced a ‘hybrid’ approach to sanders with a corded/cordless trio of models to tackle nearly any surface with complete freedom and ease,” begins Rick Bush, Festool director of product marketing. “The combination corded/cordless sanders can run off of a power cord or battery without compromise in balance or performance.” These hybrid sanders available as a 5-inch random orbit sander, delta-shaped detail sander or a rectangular orbital sander. They all share the same batteries and hybrid function. High-performance sanding results from comfortable tools were made possible by using brushless motors. Coupled with Lithium-ion batteries, brushless motors provide a long-running and long lasting solution. Now professionals have a sander they can use in the shop with a cord or on the job site with battery power. “As with all Festool sanders, dust capture and collection is a primary design consideration,” Bush adds. “We analyze how and where dust is generated and the optimum flow of air to maximize dust collection, which improves surface finish quality, prolongs abrasive life and helps keep shops and job sites cleaner.” “The next trend we see ahead is the study of vibration in sanders and its impact on users. This is already happening in the European market and our tools are all designed to minimize vibration to limit worker exposure to the hazards of vibrations.” HITACHI “Hitachi is again at the forefront of technology with useful and innovative ways to improve the end user experience while working on the job site,” says Chris Harris, product manager. “This is evident with the introduction of the new commercial grade G12VE 4 1/2-inch AC brushless variable speed angle grinder. An ultra-efficient AC brushless motor allows it to have a small grip diameter for a more comfortable hold and better control. The AC brushless motor also allows the tool to be used over long extension cords where a power source is not close at hand.” An internal inverter circuit regulates uneven power supplies and allows the tool to be powered by a generator. Additionally, the AC brushless motor extends product life and eliminates the maintenance of armatures and carbon brushes. The G12VE’s variable speed allows the user to adjust the tool to the application, for example, to reduce speed when polishing stone to prevent gouging or burning. The G12VE is also packed with features such as electronic overload protection, soft start and anti-kickback protection as well as zero-voltage restart to protect the end user. Hitachi is launching several products to keep workers and businesses safe and compliant, including attachments for cutting (1154540, tuck pointing (115455) and floor prep work (115460). The Hitachi RP350YDH HEPA vacuum (coming soon) is perfect for collecting the dust created while performing these and other common tasks. These products will protect the user from dangerous silica dust exposure and protect the job site from fines from OSHA. MAKITA “Makita innovation is driven by the vision of a cordless job site,” states product manager David Fernandez. “In the grinder category, Makita’s superior battery technology and the industry’s biggest range of purpose-built brushless motors are giving contractors more cordless grinders with the features and performance that they require.” One example is 18V X2 LXT (36V) brushless power. For maximum cordless performance, Makita created 18V X2 tools powered by two 18V LXT batteries. Users benefit with 36V performance for demanding applications while remaining in the same 18V platform that includes core tools like drills, impact drivers and 175-plus LXT solutions. Makita 18V X2 LXT (36V) brushless grinders include the 7-inch model XAG12Z and 9-inch XAG13Z. Both are loaded with features including convenient paddle switch, electric brake, lock-off, no lock-on, Electronic Torque Control and more. Makita offers seven 18V LXT cordless grinders. Two new 4 1/2-/5-inch models are on the way. The brushless XAG16Z slide switch and XAG20Z paddle switch models (coming in February 2018) feature electric brake, variable speed control, Electronic Torque Control and Automatic Speed Change to match the speed to the application. Makita’s way-cool Auto-Start Wireless System (AWS) uses Bluetooth technology for wireless communication between a tool and a dust extractor. AWS enables battery-operated tools to wirelessly communicate and power-on the AWS-equipped model XCV08Z 18V X2 LXT (36V) brushless HEPA dry dust extractor/ vacuum with the pull of a trigger. “Makita also announced five new AWS solutions at STAFDA in Austin including two 18V LXT brushless 4 1/2-/5-inch angle grinders. The XAG17ZU (slide switch) and XAG21ZU (paddle switch) grinders feature wireless communication with the AWS-equipped dust extractor.” METABO The well-publicized deadline for OSHA’s Silica rule has come and gone and companies now face possible fines for non-compliance. This has created a frenzy among contractors and power tool companies to provide compliant solutions on job sites. Metabo, well known for angle grinders, has engineered job-specific grinders for the surface prep and concrete polishing industries. “The latest tool to come to market, the RSEV 19-125 RT, replaces two very successful predecessors; the RS 14-125 and RS 17-125,” says Terry Tuerk, senior product manager. “These tools were known for their functionality of variable speed (RS 14) and high torque (RS 17). The RSEV 19-125 RT combines the best of both with a 1,900-watt/15-amp motor, soft start, overload protection and restart protection as well as a large variable speed range of 3,800 to 8,200 rpm.” This tool features an aluminum die-cast dust shroud with a convertible feature for grinding flush to walls, and a spring-mounted brush ring that captures dust and easily glides over rough surfaces. Its new rat tail design incorporates the variable speed dial at the top of the handle so an easy movement of the thumb can adjust the speed. Concrete grinders are typically used for several hours per day, in many different positions from down on hands and knees to vertical and overhead work. The new rat tail design and adjustable front loop handle provide excellent ergonomics for use in all positions. When the RSEV 19-125 RT is combined with Metabo’s ASR 35 ACP or ASR 35 AC HEPA vacuum, the contractor can be assured they comply with the Table 1 Specified Exposure Control Methods.
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