1. Introduction to Power Tools
Contren #

2. 1.0.0 Introduction to Power Tools
In the field of maintenance, Power Tools make our job much easier.
Power tools can be very dangerous to the unprepared operator.
You must learn to use power tools properly and safely.

3. 2.0.0 Electric, Pneumatic, and Hydraulic Tools
Electric Tools – powered by electricity
Alternating Current (AC) – wall receptacle
Direct Current (DC) – battery
Drills, sanders, grinders, etc.
Pneumatic Tools – powered by air pressure
Air hammers, pneumatic nailers, etc.
Hydraulic Tools – powered by fluid pressure
Pipe benders, Porta-Powers

4. Compressed-Air System

5. 2.1.0 Basic Power Tool Safety
Understand the tool’s operation before you use it
Always disconnect power source before you service the tool or change tooling
Do Not remove safety guards or interlocks
Do Not activate the trigger lock on any power tool

6. 3.0.0 Power Drills

7. 3.0.0 Power Drills
Makes holes by spinning a drill bit into many types of material
Most common are powered by electricity
Ac or DC
Also powered by pneumatics
Some machining centers are hydraulic powered

8. 3.1.0 Corded (AC Power) Drills
Always use double-insulated drills
Plug cord into a Ground Fault Circuit Interrupter outlet
Do not insert or remove bits with drill plugged into outlet
Do not engage trigger while plugging in
Tighten bit in chuck before operating
Keyless chucks should be hand-tight
Use key to tighten a keyed chuck
Clean air vents with a small brush
Personal Protective Equipment – Safety Glasses
chuck
handle
trigger
power cord

9. 3.2.0 Cordless (DC Power) Drills
These are typically used when there is no source of electricity
Remove battery pack to insert bits
Insert bit and hand-tighten the chuck
Install battery, hold chuck while lightly squeezing trigger
A few cordless drills have a keyed chuck
Remove battery and install bit as with a corded
Do not engage trigger while installing battery
Personal Protective Equipment – Safety Glasses

10. 3.3.0 Hammer (AC Power) Drills
Hammer drills include a pounding action to the rotary motion
For drilling concrete, brick, and tile
Most have adjustable hammering action
Always use double-insulated drills
Plug cord into a Ground Fault Circuit Interrupter outlet
Do not insert or remove bits with drill plugged into outlet
Do not engage trigger while plugging in
Personal Protective Equipment – Safety Glasses
depth gauge
adjustment ring
and handle

11. Drill Press

12. Drill Press Rules
Remove the key from the chuck before turning on the drill press
Use C-clamps or other holding fixtures to secure the part to be drilled
Use a center punch to indent the part and start the hole
Release pressure right before the bit breaks through the bottom of the part
Oil the bit as needed

13. 3.4.0 Electromagnetic (AC Power) Drills
handle for
drill feed
Portable drill press for precision drilling
Magnetic base to keep drill stationary while drilling
Always use double-insulated drills
Plug cord into a Ground Fault Circuit Interrupter outlet
Do not insert or remove bits with drill plugged into outlet
Do not engage trigger while plugging in
Personal Protective Equipment – Safety Glasses
drill
motor
controls
drill bit/
chuck
magnetic
lock

14. 3.5.0 Pneumatic (Air Power) Drills
Used air pressure to spin the bits
Do not insert or remove bits with air hose connected
Do not engage trigger while plugging in air hose
Keyless chucks should be hand-tight
Use key to tighten a keyed chuck
Personal Protective Equipment – Safety Glasses
keyless chuck
keyed chuck

15. 3.6.0 Types of Drill Bits masonry bit has carbide inset on tip
for drilling in concrete, stone,
slate, ceramic
core bit
for drilling plugs
in concrete, stone,
slate, ceramic
twist bit
(jobber bit)
for metal and other
hard materials
auger (bit)
for drilling in
wood and other
soft materials
spade bit for drilling in wood and other soft materials
forstner bit
for drilling in
wood and other
soft materials

16. Drill Bit

17. 4.0.0 Power Saws

18. 4.0.0 Powered Saws Saws are designed for cutting of material
Use the proper saw for the job
Use the proper blade for the material
For any powered saw, be sure the switch is in the OFF position before connection to power source.
Personal Protective Equipment
Safety Glasses

19. 4.1.0 Circular Saw Sizes by the diameter of the circular blade
Use both hands to operate
Unplug power before adjusting or changing blades
Be sure guards are in place before using
The upper guard protects you from touching the blade

20. 4.2.0 Saber Saw (Jig Saw) Uses fine blades for intricate cutting
Personal Protective Equipment – Safety Glasses

21. 4.3.0 Reciprocating Saw Uses a heavier blade
Can make straight or curved cuts
Use both hands to operate
Personal Protective Equipment – Safety Glasses

22. 4.4.0 Portable Handheld Bandsaw
Uses a continuous band with teeth
Stretched between two wheels (drums)
Use both hands to operate
Personal Protective Equipment – Safety Glasses

23. 4.5.0 Power Miter Saw A circular saw with a miter box
Used to cut precise angles in wood and soft material
Personal Protective Equipment – Safety Glasses

24. 5.0.0 Grinders and Sanders

25. 5.0.0 Grinders and Sanders
Uses a variety of abrasive wheels, brushes, buffs, drums, bits, saws, and discs
These abrasives come in different “grits” or degrees of coarseness
Used to finish a workpiece by shaping or smoothing the piece.
Use both hands to operate
Personal Protective Equipment – Safety Glasses

26. 5.1.0 Angle, End, and Detail Grinders
end grinder
cutoff tool
grinds hard, heavy material
detail grinder
die grinder
pencil grinder
smooth inside of material, such as pipe
angle grinder
disc grinder

27. 5.2.0 Bench Grinder Stationary mount on table
Always use the tool rest to support your work
Adjust to 1/8” gap between wheel and rest
Never use a wheel above its rated maximum speed
Personal Protective Equipment
Safety Glasses
No gloves or loose clothing

28. 5.3.0 Portable Belt Sander Uses a continuous abrasive belt
Stretched between two wheels (drums)
Use both hands to operate
Personal Protective Equipment – Safety Glasses

29. 5.4.0 Finishing Sander Uses circular sanding paper
pressure-sensitive adhesive (PSA) or
hook-and-loop (velcro) disc
for final very smooth finishing

30. 6.0.0 Power Fastening Tools

31. 6.1.0 Pneumatic-Powered Nailer
Uses strips of nails or staples
nails
brads
staples

32. 6.1.2 Pneumatic-Powered Nailer Safety and Maintenance
Always wear PPE
Never aim gun toward you or anyone else
Read the operating manual before first use
Keep nailer oiled according to manufacturer
2 or 3 drops of oil in the air inlet
Use correct nailer for the job
Never load nailer with hose attached
Never leave hose attached when not in use
Never attempt repairs with hose attached
Be sure you know what is in the path of fire

33. 6.2.0 (AC Power) Screwdrivers
adjustable
depth control
bits slide into
magnetic chuck
Always use double-insulated screwdrivers
Plug cord into a Ground Fault Circuit Interrupter outlet
Do not insert or remove bits with driver plugged into outlet
Do not engage trigger while plugging in
Personal Protective Equipment – Safety Glasses

34. 6.3.0 Powder-Actuated Fastening Systems
Uses gunpowder cartridges called boosters
This is the same as a low-velocity firearm
Do not use until you are certified
Do not load until ready to fire
Personal Protective Equipment
Ear Protection
Safety Goggles
Hard Hat
fastener
27-caliber RamSet
booster strip
booster

35. 6.4.0 Air Wrenches
An air-operated tool for loosening and tightening nuts and bolts
Due to the available torque of these wrenches, keep your body stance balanced when using
air impact
air ratchet

36. 7.0.0 Reciprocating Demolition Tools

37. 7.1.0 Reciprocating Demolition Tools
“jackhammer”, the common name is actually a trade name
Bit moves back and forth rapidly
clay spade shank
chisel shanks
pavement breakers
rock drills

38. 8.0.0 Hydraulic Lifting Tools

39. 8.0.0 Hydraulic Lifting Tools
service jack
floor jack
toe jack
bottle jack