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with a tachometer. Do not exceed rated operating
air pressure.
Exploding wheels can cause injury or death.
Damaged grinding wheels can explode.
• Check the wheel for damage before mounting,
such as chips and cracks. Handle wheels
carefully to avoid dropping or bumping. Protect
wheels from extremes of temperature and
humidity. Check wheels immediately after any
unusual occurrence that may damage wheels.
Check wheels daily. Hold tool under bench or
provide other protection when starting up a new
wheel, a used wheel that has been remounted, or
at the beginning of an operation. Run at operating
speed in this protected area for at least one
minute before applying to the work. No one shall
stand in front of or in line with the wheel during
this test.
Exploding wheels can cause serious injury or death.
Flanges and other related mounting equipment in
poor shape or not the proper ones for the wheel or
tool used can cause wheels to malfunction. Grinding
wheels not properly tightened can spin off.
• Be certain that all flanges and related mounting
equipment are in good shape, the proper ones for
the type and size of wheel being used, and are
securely fastened. Match wheel mounting hole to
spindle size.
Grinding wheels that malfunction or spin off can
cause injury.
SAVE THESE INSTRUCTIONS
Specifications
Specifications at 90 psig (6.2 bar, 620 kPa)
Horsepower .....................................................1.0
Free Running Speed .......................... 12,000 RPM
Recommended Air Pressure ..... 90 psig (620 kPa)
Air Consumption ................................. 30.0 SCFM
Air Inlet Thread Size ......................... 1/4"-18 NPT
Recommended Hose Size .....................................
.......................................... 3/8" (9.5 mm) ID min.
Dimensions:
Length .......................................... 7.7" (195.6 mm)
Height ........................................... 4.6" (116.8 mm)
Width .......................................... 5.04" (128.0 mm)
Weight ........................................3.25 lbs. (1.47 kg)
Noise* (Tested in accordance with ISO Standard
15744)
Sound Pressure Level (A)
PTGR450 ..................................................... 86.2dB
Uncertainty, K .................................................3.0 dB
Sound Power Level (A)
PTGR450 .....................................................97.8 dB
Uncertainty, K .................................................3.0 dB
Vibration* (Tested in accordance with ISO
Standard 28927-1:2009)
Vibration Level
PTGR450 main handle .............................4.75 m/s2
ZPTGR450CE Rev B
EN
EN
Uncertainty, K ...........................................0.45 m/s2
PTGR450 auxiliary handle .......................8.57 m/s2
Uncertainty, K ...........................................1.04 m/s2
*These declared values were obtained by laboratory
type testing with the stated standards and are not
adequate for use in risk assessments. Values
measured in individual work places may be higher.
Values and risk of harm experienced by an individual
user are unique and depend upon the environment and
manner in which the user works, the work piece and
the workstation design, as well as upon the exposure
time and the physical condition of the user.
Snap-on disclaims liability for the consequences of
using the declared values, instead of values reflecting
the actual exposure determined in an individual risk
assessment in a work place situation over which we
have no control.
Applications
This tool is intended for use with TYPE 27 depressed
center grinding wheels for metal removal.
It is not to be used with cone wheels, cup wheel or
straight wheels.
THE GUARD MUST BE IN PLACE AT ALL TIMES!
Lubrication
All models may operate without airline lubrication.
However, operating the tool without airline lubrication
may reduce tool performance and vane life.
If an airline lubrication is not used, it is recommended
that the tool be oiled daily before use to improve
performance. Add 2-4 drops of air motor oil and run the
tool for 10-20 seconds to distribute oil through the tool.
For maximum performance and tool life, an air line
lubricator, set to deliver 2 drops per minute, is
recommended. Snap-on Oil IM6 Air Motor Oil is
recommended.
For Angle Head
Lubricate the angle head assembly with 2 shots of
Snap-on Grease ME18A15 grease every 8 working
hours.
Maintenance
Water, dust and other airline contaminants can cause
rust and vane sticking. For long periods between tool
use, flush the tool with a few drops of oil and run for
10 seconds. This will help remove contaminants and
reduce the formation of rust.
Operation
This tool operates in the clockwise direction
when viewed from the operator's position.
The tool is equipped with a locking type lever in order
to prevent accidental start-up.
Speed of the tool may be adjusted by turning the
regulator, which is located opposite the throttle lever.
The angle head can be repositioned by loosening the
retaining collar and positioning the angle head in the
desired position and retighten the retaining collar.
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