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JET   

 

 

 

Safety warnings 

General air tool warnings 

1.  Read and understand this entire manual 

before attempting assembly or operation. 

2. 

Read and understand all warnings posted on 
the tool and in this manual. Failure to comply 
with all of these warnings may cause serious 
injury. 

3.  Replace warning labels if they become 

obscured or removed. 

4. 

Do not use this tool for other than its intended 
use. If used for other purposes, JET disclaims 
any real or implied warranty and holds itself 
harmless from any injury that may result from 
that use. 

5. 

Always wear approved safety glasses or face 
shield while using this tool. (Everyday 
eyeglasses only have impact resistant lenses; 
they are 

not 

safety glasses.) 

6.  Wear ear protectors (plugs or muffs) if the 

noise exceeds safe levels. 

7.  Wear gloves and protective clothing if 

operation produces sparks or flying particles. 
Gloves should be tight-fitting, without frayed 
fingers or hanging threads. Keep hands and 
body away from the working area of tool. 

8. 

Some dust created by power sanding, sawing, 
grinding, drilling and other construction 
activities contains chemicals known to cause 
cancer, birth defects or other reproductive 
harm. Some examples of these chemicals 
are: 

• Lead from lead based paint. 

• Crystalline silica from bricks, cement and 
other masonry products. 

• Arsenic and chromium 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 load on the tool. 

10.  The air tool must be properly lubricated before 

operating.  

11.  Never start a percussion type air tool (chipper, 

breaker, buster, etc.) without securing the 
tooling in the retainer and placing the tip 
against the work surface. 

12.  Do not operate air tool without its guards in 

place. Do not modify the tool. 

13.  Do not operate this tool while tired or under 

the influence of drugs, alcohol, or any 
medication. 

14. Adopt a comfortable posture with proper 

balance, and maintain secure footing at all 
times. Non-slip footwear or anti-skid floor 
strips are recommended. 

15.  Do not wear loose clothing or jewelry. Confine 

long hair. 

16.  Excessive air pressure and too much free 

rotation may decrease life of the tool and may 
cause a hazardous situation. 

17.  Check air hoses for wear, and keep them 

away from heat and sharp edges. Repair or 
replace damaged air hose immediately. Do 
not carry tool by the air hose. 

18.  Air hose may cause tripping hazards; keep 

hose away from traffic areas. 

19.  Do not use this tool near flammable objects, 

or in potentially explosive environments. Do 
not use near live electrical wires. 

Summary of Contents for JAT-451

Page 1: ...Pneumatic Angle Grinder 505450 JAT 450 505451 JAT 451 Operation Parts Manual M 505450 Edition 2 06 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET...

Page 2: ...h 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...

Page 3: ...romium 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 wi...

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 lubrica...

Page 5: ...rth in 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 sen...

Page 6: ...A Speed settings Variable throttle lever Variable throttle lever Overall length 9 3 8 in 238 13 mm 9 3 8 in 238 13 mm Housing material Aluminum with composite grip Aluminum with composite grip Net we...

Page 7: ...re 2 6 Blow out air line to remove any dirt or moisture then connect air supply hose to tool Set air pressure to 90 psi IMPORTANT Connecting a quick change coupling directly to the tool is not recomme...

Page 8: ...line may enter the tool and cause damage 5 Change filters on the air system on a regular basis 6 Air line pressure may be increased accordingly to compensate for extra long air hoses usually over 25 f...

Page 9: ...such as SAE 10 Many JET air tools have integral oil reservoirs which should be kept filled when in line oilers are not used If greasing is required use a grease that is highly water resistant for fron...

Page 10: ...Lubricate 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 ha...

Page 11: ...llowing 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 wh...

Page 12: ...12 JAT 450 451 Angle Grinder 505450 JAT 450 4 inch Angle Grinder exploded view...

Page 13: ...3 JAT450 33 Spindle 3 8 24UNF 1 34 JAT450 34 Key 3x13 1 35 JAT450 35 Spacer 1 36 JAT450 36 Bearing cap 1 Index Part No Description Qty 37 JAT450 37 Disc cover 1 38 JAT450 38 Flange 3 8 24UNF 1 39 6104...

Page 14: ...14 JAT 450 451 Angle Grinder 505451 JAT 451 5 inch Angle Grinder exploded view...

Page 15: ...1 33 JAT451 33 Spindle 5 8 11UNC 1 34 JAT450 34 Key 3x13 1 35 JAT450 35 Spacer 1 36 JAT450 36 Bearing cap 1 Index Part No Description Qty 37 JAT451 37 Disc cover 1 38 JAT451 38 Flange 5 8 11UNC 1 39 6...

Page 16: ...16 JAT 450 451 Angle Grinder 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848...

Page 17: ...JET 17 www jettools com...

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