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JAT-452 Angle Grinder 

 

20.  Do not use power tools in damp or wet 

location, or expose them to rain. Keep work 
area well lighted. 

21.  Do not leave a connected tool unattended. 

When not in use, disconnect tool from air 
source. 

22.  Shut off air supply and discharge any residual 

pressure from tool before removing hose, 
making adjustments, changing accessories, 
or storing tool. 

23.  Make sure tool is switched off, and your finger 

off the trigger, before connecting to air supply. 

24.  Remove adjusting keys and wrenches before 

turning on tool. 

25.  Keep visitors a safe distance from the work 

area. 

Keep children away.

 

26.  Give your work undivided attention. Looking 

around, carrying on a conversation and 
“horse-play” are careless acts that can result 
in serious injury. 

27.  Do not force a tool or attachment to do a job 

for which it was not designed. The right tool 
will do the job better and more safely. 

28. Repetitive motions and/or exposure to 

constant vibration can be harmful to hands 
and arms. Take frequent breaks and relax 
hands during extended operation. Change 
posture to avoid discomfort or fatigue. 

29.  Compressed air can be harmful if directed 

toward sensitive areas of the body, and may 
propel small particles caught in the air stream. 
Exercise proper caution. 

30. 

Use only recommended accessories; 
improper accessories may be hazardous. 

31.  Maintain tools with care. Keep air tool clean 

and oiled for best and safest performance. 

32. Do not use combustible gases, carbon 

dioxide, oxygen or any bottled gas as an air 
source for the tool. These can present risk of 
explosion and serious injury. 

33.  Do not lubricate the tool with combustible 

liquids, such as kerosene, diesel or jet fuel. 

34.  Do not dispose of this tool with normal 

household waste. Never dispose of the air tool 
into fire. 

Specific warnings for Angle Grinder 

35.  This grinder is designed and intended for use 

by properly trained and experienced 
personnel only. If you are not familiar with the 
proper and safe operation of a pneumatic 
angle grinder, do not use until proper training 
and knowledge have been obtained. 

36.  Inspect grinding wheel for cracks, bends, 

excessive wear, or any other deformation. Do 
not use a defective wheel. If using a wire 
brush, inspect for loose wires. 

37.  Do not get oil or water on the grinding wheel. 

38.  When operating grinder, place grinding wheel 

against work surface immediately after 
starting. 

39.  Use proper size grinding wheel that matches 

the tool’s specifications. Do not use 
unapproved flanges/bushings to adapt a 
grinding wheel to the arbor. 

40.  The grinding wheel RPM rating must be the 

same or higher than RPM rating of grinder. 

41.  Ensure that work piece is securely fixed by 

clamps or other means, and will not move 
during operation. 

 

Familiarize yourself with the following safety notices used in this manual: 

 

This means that if precautions are not heeded, it may result in serious, or even 

fatal, injury.

 

  

This means that if precautions are not heeded, it may result in minor injury and/or 

possible tool damage.

 

Summary of Contents for 505452

Page 1: ...Pneumatic 7in Angle Grinder 505452 JAT 452 Operation Parts Manual M 505452 Edition 2 06 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET ...

Page 2: ... any additional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How State...

Page 3: ...hromium from chemically treated lumber Your risk of exposure varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as face or dust masks that are specifically designed to filter out microscopic particles 9 Do not operate an air tool continually at full throttle without a work loa...

Page 4: ...t and safest performance 32 Do not use combustible gases carbon dioxide oxygen or any bottled gas as an air source for the tool These can present risk of explosion and serious injury 33 Do not lubricate the tool with combustible liquids such as kerosene diesel or jet fuel 34 Do not dispose of this tool with normal household waste Never dispose of the air tool into fire Specific warnings for Angle ...

Page 5: ...n this document The instructions and warnings in this manual may not encompass all possible workplace environments The operator is expected to take appropriate precautions and exercise common sense As with any tool operation safety of operator and bystanders should be first priority If there are questions or comments please contact your local supplier or JET JET can also be reached at our web site...

Page 6: ...r Overall length 13 3 4 in 349 25 mm Housing material Aluminum with TPE molded grip Net weight 8 00 lb 3 63 kg Shipping weight 9 44 lb 4 28 kg 1 The specified values are emission levels and are not necessarily to be seen as safe operating levels As workplace conditions vary this information is intended to allow the user to make a better estimation of the hazards and risks involved only Specificati...

Page 7: ...re grip Push throttle lock knob to release throttle lever 7 Gently press throttle lever Rotation is clockwise as viewed from above tool Pressure against throttle lever determines rotation speed 8 Place grinding wheel against workpiece with a steady pressure Do not use excessive pressure allow the tool to do the work 9 Release throttle lever to stop grinder To reposition disc guard loosen the two s...

Page 8: ...he air wrench is too small or the air compressor CFM is not powerful enough for the job Continued use in either capacity will cause damage to the tool Tool Pressure JET Air Tools operate on 70 to 100 psi pounds per square inch air pressure measured at the tool when the tool is operating Set tool to 90 psi unless indicated otherwise Pressure in excess of 100 psi will shorten the life of the tool Ai...

Page 9: ...JET 9 Figure 2 Recommended arrangement of air piping and air line system ...

Page 10: ...icate properly according to instructions in this manual Bearings worn Disassemble and inspect bearing Grease or replace as needed Loss of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Check for loose connections at air inlet o rings etc Moisture or obstruction in air hose Air supply must be clean...

Page 11: ...ollowing pages To order parts or reach our service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Please have the stock number and serial number of your tool available when you call so that we may serve you quickly and accurately ...

Page 12: ...er 505452 JAT 452 7in Angle Grinder exploded view 53 18 36 36 19 35 37 38 24 16 15 14 35 23 6 5 32 28 31 9 30 30 26 26 52 3 7 2 33 4 34 8 40 39 17 43 12 47 25 46 45 44 11 50 27 41 10 42 48 48 21 56 49 49 29 13 20 22 54 51 1 ...

Page 13: ...rew M5x20L 4 27 JAT452 27 Spindle lock pin 1 Index Part No Description Qty 28 JAT452 28 Spring 1 29 JAT452 29 Screw M4x0 7P 1 30 TS 2361051 Spring washer M5 4 31 70109NPN O Ring 9 8x1 9 1 32 JAT452 32 O Ring 6x2 1 33 JAT741 09 E Ring ETW 4 1 34 JAT741 34 Spring pin 4x25L 1 35 BB 6201Z Ball bearing 6201Z 2 36 JAT104 17 Spring pin 3x8L 2 37 BB 6202ZZ Ball bearing 6202ZZ 1 38 JAT452 38 Retaining ring...

Page 14: ...14 JAT 452 Angle Grinder This page intentionally left blank ...

Page 15: ...JET 15 This page intentionally left blank ...

Page 16: ...16 JAT 452 Angle Grinder 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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