Foreseen Use Of The Tool -5062
This die grinder is primarilydesigned for use with bondedabrasive mountedpoint grinding wheels. It may also be used with steel rotary files and carbide buns providedtheir speed rating matches the speed of the grinder.
This tool should not be fitted with cut off wheels, saw blades, drill bits, etc. If there Is any doubt about the correct use of this product contact your supplier for advice.
Also make sure that the shank size of the attachmentto be driven matcheswith the collet size fined inthe grinder and that the maximum allowed runningspeed of the attachment exceeds that marked on the grinder.
There are special rulesgoverningthe use of bonded abrasive mounted point grindingwheels
Work Stations
The tool should only be usedas a handheld, hand operatedtool. It is always recommendedthat the tool is usedwhen standingon a solid floor. It can be used in other positions, but before any such use, the operator must be in a secure position having a firm grip and footing and be aware of the extra safety precautionsthat must be observed when using grinding machines.
Putting Into Service
Air Supply
Use a clean lubricated air supply that will give a measuredair pressure at the tool of 90 PSiG (6.2 bar) when the tool is runningwith the trigger~leverfully depressed. Use recommended hose size and length. It is recommendedthat the tool Is connected to the air supply as shownIn figure 1. Do not connect the tool to the air linesystem without Incorporatingan easy to reachand operate air shut off valve.The air supply should be lubricated. It is strongly recommendedthat an air filter, regulator, lubricator (FRL) Is used as shown in Figure 1 as this will supply clean, lubricatedair at the correct pressure to the tool. Details of such equipment can be obtainedfrom your supplier. If such equipmentIs not used, thenthe toolshould be lubricatedby shuttingoff the air supplyto the tool, depressurizingthe line by pressing the trigger on thetool. Disconnectthe air lineandpour intothe hoseadaptora teaspoonful(5ml)of a suitable pneumaticmotorlubricating oil preferably incorporatinga rust inhibitor.Reconnect tool to air supply and runtool slowly for a few seconds to allow air to circulate the oil. If tool is used frequently, lubricate on daily basis and if tool starts to slow or lose power.
It is recommendedthat the air pressure at the tool while the tool is runningis 90 PSU6.2 bar.
Operating
Select a suitable mountedpoint that has a free running speed higher than the maximum running speed marked on the tool. Make sure that the diameterof the shank exactly matches the diameter of the collet mountedIn the grinder.There are two standard sizes of collet available for use with this grinder, i.e.,
1.- 114" Dia.(0.250 ins) (6.35mm)
2.- 6mm Dia. (0.236 ins)
Always match correctlythe shank size to the collet size. If uncertain, have parts measured by a competent person.
Push the shank as far as possible into the colietand tightenthe collet nut using the spanners providedon the collet nut and the output spindle. The shank of the mounted point may be pulled toward from the maximum insertion length, but always ensure a maximum gripping lengthof not less than 10mm- see Figure2.
Be awarethat the allowed runningspeed of the mountedpoint is loweredbecauseof an Increase In the iengthof the shank between the endof the collet andthe body of the mountedpoint.This distance is shown inFigure 2.asULo'andis calledthe overhang.The information with respect to mounted polnt, permissible running speed and reduction in running speed due to an increase in overhang is available from the supplier of the mounted points. It the Increase in overhang for access reasons takes the permissible running speed of the mounted point below the free runningspeed of the grinder, select a smaller diameter mountedpoint.
The fitting of the mountedpoint should be done by a trained operator. When first starting the grinder with a new point or wheel fitted, the grinder should not be near other personsand be held in a protectedarea. 1.e. under a bench, and run fora few seconds.This will protect personnelfrom possible effects of damage to the mountedpolnt or wheel before it is was fitted to the grinder i.e. wheel breakage.
Always use eye protectionand wear protective gloves Ifthere are sharp edges in the work area. The tool and the grinding process can create a noise level such that the use of ear protectors is advised.If the grinding process creates a dust, then use a suitable breathing mask. Check that the material being worked will not cause harmful dust or fumes. If this is so, then special breathingmasks may be required. If the grinder vibrates when first fitting a mounted point or during operation, remove from service immediately and correct fault before continuingto use.
Do not apply excessive pressure as this will reduce the cutting |
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efficiency and can bend the shank of the mountedpoint causing |
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vibration and the possibility of breakage. Apply light loads to |
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allow the wheel to cut. |
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Handle the grinder with care. If the grinder is dropped, carefully |
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check the mounted polnt for damage, 1.0. cracks, chipping, and |
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start for the first time asfor fittinga newwheel, i.e. undera bench. |
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Neverexceed the maximum air pressure. If there is this possibii- |
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ity, always use this grinder with a pressure reducing valve fitted |
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inthe supply line.Your supplier will advise of suitableequipment. |
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This grinder Is liltedwith a speed regulator and the speed may |
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be reduced by rotating alr regulator (8) with a suitable screw- |
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driver. When making speed checks, always rotate the air | D | = | diarderof ~'~~ountedpoint | S | = | diameter of shank | |
regulator to the position that gives the highest maximum speed. | |||||||
The lever on a die grinder is the ontoff valve,Thg air flow can be | T | = | length of mounted point | Lg | = | gripping length | |
controlled by the adiustino of the valve (81 O D D O S ~the~ ~ lever. | Lo | = | overhand |
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Usinga screwdriver, turnthe valve (8) untilthe slot alignswith the | 1 Figure 2' | Gripping length of collet and chuck | |||||
center line of the tool tor maxlmum speedgnd power and roiate | |||||||
90'for minimumspeed andpower.An air strainer is located inthe
adaptorbushing (14) of the grinder. Remove adaptor bushing(14) to clean strainer.
Dismantling & Assembly Instructions
Disconnecttool from airsupply. Grip chuck spindle (27)with wrench (30) andcollet nut (29) with wrench (30)and unscrew collet nut (29) and take out mountedpoint grinding wheel as fitted. Removecollet nut (29) andpull out collet (28). Grip motor housing (1)by the flats at the rear end In a vise fitted with soft jaws and drive out pin (13) and take off safety throttle lever (12). Unscrew hose adaptorwith screen
(14)and take off O-ring (15) and muffler (37) from hose adaptor (14).
Unscrewcap housing (26). Unscrewclamp nut (25) and grip chuck spindle (27) and pull out spindle (27) with motor assembly attached. Grip or support rear end plate (17) and tap the rear end of rotor (18) to drive it through rear end plate (17) and bearing (16). With a suitable punch lap out bearing (16) from rear of end plate (17).Take off cylinder (21) noting US orientation to other parts for reassembly. Remove 4 rotor blades (19) from rotor (18). Grip mtor (18) being very careful not to damage or raise burrs on it and unscrew chuck spindle (27) from mtor (18) to release spindlecollar (23) and fmnf end plate (22) with bearing (24) assembly.With a suitable punch tap out bearing(24) from front end plate (22).
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