Grinding wheel safety pdf

Here is our list of dos and donts when it comes to grinding wheels. Consider disc size, arbor size, motor power, power source and. Ensure the wheels do not touch the work rest and that the gap between wheel and rest is no greater than 1. Straight cup the straight cup wheel, type number 6, is used primarily for. If the operator loses control of the tool, this safety feature helps prevent a serious injury from happening by. Grinding wheel quality the quality of grinding wheel performance is related to the specific conditions of a given application, such as type of machine and composition of workpiece, and is evaluated according to two criteria.

Keep other employees away while operating power tools. Test your grinder safety knowledge fabricating and metalworking. If the operator loses control of the tool, this safety feature helps prevent a serious injury from happening by stopping the wheel. Injuries from grinding wheels can be prevented by the use of eye protection, safe work practices and proper care and guarding of the grinding wheel. Apr 09, 2019 in this article, i will talk about some common grinding hazards that may affect you unless you take safety precautions. Dont allow sparks from grinding to fly into combustible or flammable materials such as scraps or solvents. American national standard safety code for the use, care. Ask shop staff to demonstrate proper use of this tool. In addition to looking at essential training needs, the guide also focuses on details such as. This foreword is nat a part of the american national standard safety code for the use, care and protection of abrasive wheels, 87.

Dressing is cleaning and smoothing the surface of the grinding wheel. Safety inspection checklist abrasive wheel grinders portable. Always use proper guard with grinding wheel, it protects operator from broken wheel. A stable and undamaged wheel will give a clear metallic tone or. The floor mounted utility grinding machine shown in figure 51 mounts two 12 inchdiameter by 2inchwide grinding abrasive wheels. It should be 18 inch from the wheel surfaceno more. Safety requirements for the use, care and protection of.

The grinder safety training cd is the first release in mancomms new safety interactive training experience site product line. As a wheel wears down, the space between it and the guard increases. Because the safety guard is designed to restrain the pieces of a shattered grinding wheel, the distance between the safety guard and the top periphery of the wheel must not be more than 1. To cut steel plate, rode, or steel casing, cutter wheels are used. There are general purpose grinding wheels, but some are. This exposure shall begin at a point not more than 65 deg. Wheway, the british abrasives federation, and tassia training and safety. The manufacturing process of some wheels may preclude the use of multicolor blotters and labels. Applicable to osha general industry and construction regulations for portable. Grinding machines have some special safety precautions that must be observed. The grinding operation can loosen chips or particles that can fly into the eye. Wheels should be tapped gently with a light, nonmetallic instrument.

It is a very precise tool which uses a stationary, abrasive, rotating wheel to shave or finish a metallic surface which is held in place by a vise. Grinding machines are made in a variety of types and sizes, depending upon the class of work for which they are to be used. Bench or pedestal grinder safety university of michigan. They can be electric, gas powered, or pneumatic and come in a variety of sizes. The grinder s guard was removed, as the stone was too large for the tool. Guidance subsequent to the repeal of the abrasive wheels regulations 1970 encompassing relevant puwer 1998 issues and any conflicts with draft european standards. Keep the tool rest as close to the grinding wheel as possible without touching it. Check physical damage to the wheel before mounting.

Explains commonly cited osha standards for portable abrasive wheel equipment used for grinding and cutting materials. Grinding and cutting wheels, resinoid type 1, type 27, type 28, type 29, cup wheels type 11 cones and plugs type 16, type 17 and type 18 mounted point. On some, the abrasive wheels are mounted so only the exposed flat side is used for grinding. The angular exposure of the grinding wheel periphery and sides for safety guards used on machines known as bench and floor stands should not exceed 90 deg. Safety data sheets sds search for safety data sheets sds on norton products. Using the wrong wheel can cause safety hazards for the grinder as well as it will damage the wheel. For example, if a wheel has a safety glasses icon and a face shield icon, the face shield must be worn along with the safety glasses. The floor mounted utility grinding machine shown in figure 51 mounts two 12inchdiameter by 2inchwide grinding abrasive wheels. An abrasive wheel is a grinding tool consisting of abrasive grains held together by organic or inorganic bonds.

There is also more than one type of grinder design. Sds search 110 upcs enter the upcs separated with a space no commas in the sds search 110 upcs section. Portable grinder operating procedures using portable grinders safely like all power tools, portable grinders can present safety concerns, including flying particles and electrical hazards. The surface grinder is mainly used in the finishing process. Solution use a grinding wheel for grinding operations.

The speed of the grinder must be compared to the speed marked on the wheel or package to make sure the machines speed is at or below the maximum operating speed of the wheel. The tongue guard must be adjusted to within 14 of the wheel. If this distance is greater because of the decreased size of the abrasive wheel, then a tongue guard must. Safety in the use of abrasive wheels health and safety. Download safety data sheets in english, spanish and french for the following products. Angle grinders, also called side or disc grinders, are a handheld power tool used for cutting, grinding and polishing. Do not keep any materials close to the grinding wheel when it is not in use. Grinding wheel safety rules ganoksin jewelry making community.

This can stop a slicer wheel in less than 1 second and a grinding wheel in less than 2 seconds when the grinders switch is disengaged. Is the power cord including plug free of breaks andor other damage. This cd is the first release in a new safety interactive training experience site product line that use multimedia presentations which actively. Safety inspection checklist abrasive wheel grinders portable handheld yes no na inspection item comments is the outer case body of the grinder free of cracks and breaks. This can stop a slicer wheel in less than 1 second and a grinding wheel in less than 2 seconds when the grinder s switch is disengaged. Abrasive wheel setup grinding wheels must also have an adjustable tongue guard. Grinding safety guidelines grand valley state university.

To avoid injuries follow the safety precautions listed below. Do run wheel in a protected area for one minute before grinding. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cuttingoff machines and on surface grinding machines which employ the wheel periphery shall not exceed 150 deg. To use them safely, it is important to note that rotating grinding wheels and cutting discs can break, causing the potential for injury. And last but not least, always stand to one side of the grinder when you turn the grinder on so that if the wheel happens to shatter, the particles will be less likely to strike you. Tapered wheels, type number 4, take tapered safety flanges to keep pieces from flying if the wheel is broken while snagging. Safety practices that must be followed to minimize accidents and maximize safety when using angle grinders and resinbonded wheels apply to the wheels, the grinder, and the operator. Grinders, or tools that use abrasivegrinding wheels.

Included in this standard are the requirements for safety guards, flanges, chucks. Are all screws and fastenings on the outer case body in place and tight. Angle grinders, also called side or disc grinders, are a handheld power tool used for cutting, grinding and. Safety requirements for the use, care and protection of abrasive wheels 1 scope and definitions 1. Abrasive wheel machinery shall not be operated without the appropriate guards in place.

Visually inspect for chips or imperfections, replace if found. Then i will state some reasons why such hazard happens with some cool safety precautions that you should take while grinding. Do use common sense safety practices and adhere to all local and federal laws and regulations. Portable grinding machine shall be well insulated while mounting the grinding wheel on protable grinder 2. Portable grinder operating procedures ofd foods, llc. Sep 10, 2014 explains commonly cited osha standards for portable abrasive wheel equipment used for grinding and cutting materials. Minimizing this gap helps prevent the item you are grinding from becoming.

It is the abrasive grinding wheel industry standard for the safety requirements for the use, care and protection of abrasive wheels and most abrasive wheel safety related questions can be found there. Grinding wheels must be inspected and ringtested before they are mounted to ensure that they are free from cracks or other defects. To work with high strength steel, there are harder wheels. Eye injuries are another serious hazard with abrasive wheel grinders. If further away, your work piece or fingers may get the work caught between the wheel and the rest. A grinding wheel may be dangerous if used for an application for which it is not intended.

The safety guard should be mounted so as to maintain proper alignment with the wheel, and the strength of the fastenings should exceed the strength of the guard. Select the languages needed, click the magnifying glass to search. Selecting the correct wheel for the job is essential for safety. Always use proper guard with grinding wheel, it protects operator from broken wheel fragments. The most common are injuries to the eyes from flying particles, hand and finger injuries and injuries caused by grinding wheel breakage. A 6 thin cutting wheel has a no load speed of 9,600 rpm, which equals 170 mph.

Site products use multimedia presentations which actively engage. To minimize the risk of serious injury, follow these safe work practices. Operating a pedestal or bench grinder basic safety requirements reference 1910. Select the right rpm wheel for the grinder speed identify dangers of grinding in close proximity to unprotected workers ensure the grinder is the proper tool for the job convenience is not a sufficient reason restrict use of angle grinder if there is a better or safer option proper storage of the grinders when not in use. Always wear safety glasses, face shield, protective gloves, suitable protective clothing, hard hat, steel toe boots and hearing protection and dust mask if necessary. When used on grinding machines they require specific actions to protect the operators. It is the abrasive grinding wheel industry standard for the safety requirements for the use, care and protection of abrasive wheels and most abrasive wheel safetyrelated questions can be found there. Do be sure wheel hole or threads fit machine arbor properly and that the flanges are clean, flat, undamaged, and the proper type. Topics covered include personal protective equipment, grinder and grinding wheel rpm compatibility, ring tests, grinding wheel installation, guard adjustment, and aluminum oxide grinding wheels.

Part of the be prepared to work safely series of video shorts and pocket cards from imca. Jul 23, 2015 do always run wheel in a protected area at least one minute before grinding. This foreword is not a part of the american national standard safety code for the use, care and protection of abrasive wheels, b7. In these cases, the icons can be printed in two contrasting colors.

First of all, check the label on the abrasive wheel to make certain it is intended to be used on the type of material you will be grinding. Grinding is the process of removing material by the cutting action of the countless hard and sharp abrasive particles of a revolving grinding wheel as they come in contact with the surface to be ground. Do always wear protective safety glasses or proper face shield. Another safety feature available on grinders is a mechanical safety brake. Tool rests on bench or pedestal grinders shall be set no more than 116 inch from the wheel. Grinding wheel safety injuries from grinding wheels can be prevented by the use of eye protection, safe work practices and proper care and guarding of the grinding wheel. Safety data sheets sds sds finder norton abrasives. Do not handle until all safety precautions have been read and understood. This vise, which is part of a table, or carriage is moved back and forth under the abrasive wheel. This exposure shall begin at a point not less than 15 deg. Grinding machines grinding is the process of removing metal by the application of abrasives which are bonded to form a rotating wheel. Chemical product and company information product name. Make sure there is a flange on each side of the wheel, and that both flanges are the same size. If a magnetic chuck is being used on the surface grinder, make sure it is holding the work securely.

Then your hand may be dragged against the wheel or the wheel may burst. Safety goggles, ear defenders, safety gloves, dust masks and, if conditions are severe, additional face. Check the safety guard to be sure it covers the spindle end, nut, and flange projections. Grinding wheel shall be from reputed brand of specified diameter and quality 2. Nov 06, 2017 part of the be prepared to work safely series of video shorts and pocket cards from imca. These are in addition to those safety precautions described in chapter 1. Check that the wheels are running true and are not glazed or loaded. Never stick an object into the wheel to stop the grinder more quickly. The most common resinbonded wheels are type 27 depressed center for grinding and cutting and type 1 flat for cutting.

Grinder safety a worker was using a handheld grinder fitted with a grinding stone. We will cover more aspects of pedestal and bench grinder safety in other toolbox talks. Special training is required before using the surface grinder. Job hazard analysis on grinding works safety for all. Safety inspection checklist abrasive wheel grinders.

Thousands of angle grinder related injuries are reported each year, injuries that could have been prevented. The grinders guard was removed, as the stone was too large for the tool. Grinding wheel safety great american insurance group. Grinding wheel safety rules by charles lewtonbrain besides the safety instructions that you get from a tool manufacturer in the tool manual it may be necessary for you to write your own sets of rules up to keep you out of trouble. If your business uses type 1 or type 27 grinding wheels, there are steps to take to keep you and your employees safe. Bench grinders with normal grinding wheels attached are to be guarded as per the manufacturers recommendation. Portable grinder injury portable grinder safety in a recent incident at a san luis obispo county public school involving a hand held portable disc sander, an employee was injured when the cut off wheel unexpectedly disintegrated, sending pieces flying across the workshop. Safety precautions grinding machine safety grinding machines are used daily in a machine shop. Material safety data sheet for grinding wheels and bonded abrasives format by fepa as per eec directive 9155cee and rule iso st 11014 page 1 important notice bonded abrasives are inert products which do not create any risk when handled or stored. Always start grinder with the wheel facing away from the. As the worker started to grind, the stone broke, and pieces of stone struck and injured him. Why do accidents happen 1 fatigue 2 rushing to finish a job 3 lack of awareness of the potential risks 4 use of the wrong tool or wrong accessories 5 removal or bypassing the tools safety features. In addition to the tight quality control standards, high performance, safety and durability more than 150,000 different. Angle grinder safety occupational safety and health.

Hold work securely while grinding, use the tool rest to support the work when offhand grinding on bench or pedestal grinders. Free osha training tutorial portable abrasive wheel. Test your grinder safety knowledge fabricating and. It is therefore essential that the fullest details of the type of grinding operation should be given to the manufacturer to enable the correct wheel to be supplied. Always start grinder with the wheel facing away from the body and other workers. Grinding wheel safety rules ganoksin jewelry making. British standards can be obtained in pdf or hard copy formats from bsi. Select the right rpm wheel for the grinder speed identify dangers of grinding in close proximity to unprotected workers ensure the grinder is the proper tool for the job convenience is not a sufficient reason. The manufacturer recommends or approves its use on the product the accessory limitations and specifications match those of the grinder speed, size, mounting and guarding requirements, etc.

Surpassing this rating risks not just wheel breakage but also the safety of shop personnel. Do check all wheels for cracks or damage before mounting. Check for cracks in the wheel and report any you find. If the arbor revolutions per minute rpms of a given grinder is 3400, which grinding wheel would be safe for use on this particular grinder.