Jaw Crusher
Great energy conservation, wide adjustment range, low noise and little dust
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Email us[email protected]
Address usZhengzhou,China
Email us[email protected]
Address usZhengzhou,China
Sep 26 2017 There are four basic safety elements to the bench grinder that serve as guards or shields The flange and spindle guard protect the worker from the spinning wheel The eye shield is an optional protector for the worker who should be wearing eye protection The adjustable tongue guard helps suppress flying debris and sparks
Great energy conservation, wide adjustment range, low noise and little dust
1.5 times or even 2 times larger crushing cavity than that of other crushers, large feeding mouth
With features of reliable structure, high working efficiency and easy adjustment
VSI sand maker, also called VSI crusher, is the major machine for sand making plant.
Ball mill is the key machine to grind the crushed materials. Ball mill machine is widely used to process cement, silicate product, building material, refractory material, fertilizer, ceramics and glass, etc.
On the basis of domestic mills, fote raymond mill is produced. The raymond roller mill enjoys the features of high working efficiency, low energy consumption, small floor space and small cost.
The wheel explode a wellrecognized safety precaution on benchpedestal grinders is to stand well off to the side of the wheel for the first full minute before using the machine accidents have shown that grinding wheels are most likely to shatterexplode during that first minute there is an osha instruction standard std 1128 october 30
Fig guard for cuttingoff machine fig adjustable guard of disc grinding wheel with threaded inserts fig adjustable guard of with abrasive segments guards for fixed cuttingoff machines guards for fixed cuttingoff machines the maximum angle of the aperture is 150 the guard must enclose the wheel on all sides with the exception of this
For example the hole size of a 14 inch 356 mm cutoff wheel is typically 254 mm compared to 223 mm on a 9 inch 230 mm cutting disc see photograph 2 if the disc hole is too big for the spindle flange the disc may be off centre become unbalanced vibrate excessively and rapidly lead to it shattering
Feb 17 2016 osha guard removal exception only allows the guard to be removed for internal grinding where the work acts as a guard 3 ring test before installing an abrasive wheel visually inspect it for cracks or flaws and perform a ring test place your finger through the mounting hole of the new abrasive wheel
Osha training toolbox talk pedestal amp bench grinder safety mounting abrasive wheels reference 1910243 1926303 there are general purpose grinding wheels but some are intended to be used only on specific types of materials like aluminum or stainless steel only
Oct 03 2016 never adjust rests while wheels are moving work rest height should be on horizontal centre line of the machine spindle maintain 6 mm 14 in wheel exposure with a tongue guard or a movable guard check that wheels have blotters on each side check the wheel fits properly to the spindle when mounting if it is loose get another wheel
The b111 standard for mechanical power presses and the b119 for grinding equipment have corresponding osha regulations but the rest of the machinery from power press brakes b113 to tube bending b1115 to lasers b1121 fall under oshas general requirements 1910212 which states that the employer must provide safeguarding to
10198 osha 92006 f amp cert ef 4370042100 grinders c portable grinding a grinding operation where the grinding machine is hand held and easily moved d safety guard an enclosure for an abrasive wheel a mount grinders securely on the floor bench
Oshas standard for mechanical power presses 1910217 200 handfed ripsaws must be equipped with this type of guard selfadjusting hood guard 200 tongue guards must be adjusted to be no greater than this distance from the periphery of the grinding wheel 14 inch 200
Safety guards used on machines known as right angle head or vertical portable grinders shall have a maximum exposure angle of 180 deg and the guard shall be so located so as to be between the operator and the wheel during use adjustment of guard shall be such that pieces of an accidentally broken wheel will be deflected away from the operator
Guard design the safety guard shall cover the spindle end nut and flange projections the safety guard shall be mounted so as to maintain proper alignment with the wheel and the strength of the fastenings shall exceed the strength of the guard except1910215a2i 1910215a2i
Machine guarding hazards are addressed in specific osha standards for agriculture general industry maritime and construction
Guarded angle grinder with auxiliary handle used at 30 degrees proper use icon for a type 28 grinding wheel guarded angle grinder with auxiliary handle used at 15 degrees proper use icon for a type 2742 and type 141 cutting wheel guarded angle grinder with auxiliary handle used at
Aug 06 1998 abrasive wheels must be guarded in accordance with 29 cfr 1910215 section 1910215 addresses the hazards of coming in contact with a rotating abrasive wheel and of being struck by abrasive wheel fragments an abrasive wheel is defined in 1910211b14 as a cutting tool consisting of abrasive grains held together by organic or inorganic bonds
Aug 01 2011 wire wheels and power buffers now fall under cfr 1910212 general machine guarding from an osha letter of interpritation wire wheels should have at least an upper wheel cover if cleaning large items such as axes or shovels and a full wheel cover as required for abrasive wheels with a tongue guard if doing other types of cleaning or polishing work
Safety guards used on machines known as right angle head or vertical portable grinders shall have a maximum exposure angle of 180 degrees and the guard shall be so located so as to be between the operator and the wheel during use adjustment of guard shall be such that pieces of an accidentally broken wheel will be deflected away from the operator