2025 KLINGSPOR BIG Catalog - Catalog - Page 177
Reference
AIR SUPPLY RECOMMENDATIONS
FOR RO SANDERS
Sufficient air supply to portable sanding
tools is crucial for proper finishing characteristics. If the air pressure is too low, random orbital disc sanders will be much more
likely to create "swirl marks" or "fish hooks"
on the workpiece.
KLINGSPOR recommends the following:
• Maintain steady operating air pressure
of 90 P.S.I. under load. Remember this
is not the same as the air pressure to
the tool when it is not in use. Use your
gauge on the sander to determine actual
P.S.I. under load.
• Most palm style random orbital sanders require an air volume of 15 to 18
standard cubic feet per minute (SCFM).
Compressor size should be a 5 hp, two
stage design.
• If using rubber or plastic air hoses with
an inside diameter of 3/8", a maximum
length of 20 feet from the iron air supply
pipe is suggested.
• Use larger I.D. hoses and couplings
whenever possible. Standard hose inside diameters are typically 5/16", 3/8"
and 1/2". Also, make sure the couplings’
I.D. sizes are no more than one size
smaller than the hose I.D. Be sure male
and female couplings are of the same
I.D.
• Always keep air tools properly maintained. Keep tools properly lubricated
and clean. Replace worn bearings and
backing pads. Keep mufflers and exhaust areas clean and unrestricted.
METAL QUICK GUIDE
METAL FINISHES
FERROUS METALS
Stainless Steel Mill Finishes
1.) Cast Iron – contains over 2% carbon, very
hard & brittle
2.) Carbon Steel – is less than 2% carbon.
Includes low carbon, mild/medium carbon,
high carbon, tool steel. Will rust or
corrode unless painted, plated or galvanized.
3.) Stainless Steel – alloyed with the metal
chromium and sometimes nickel and other
metals. Non-rusting or corroding. Four
basic types: austenitic, martensitic, ferritic
and precipitation-hardening (PH).
NON-FERROUS METALS
1.) Aluminum – very common, lightweight,
strong, various hardnesses available.
Used for a wide variety of applications.
2.) Copper Alloys – (pure copper, brass,
bronze, copper-nickel alloys). Many types
and varieties. Non-corroding.
3.) Zinc – Lightweight, white-colored metal.
Mostly for die cast parts or for galvanizing
steel to prevent rusting.
4.) Magnesium – Very lightweight, similar to
aluminum. Usually cast.
5.) Titanium – Space age material for medical, nuclear and aerospace markets.
Very lightweight, very strong.
6.) Nickel and nickel alloys – Monel is
the most common nickel alloy. Similar
to stainless steel. Pure nickel is usually
alloyed with other metals
#2B A mill cold-rolled finish. No abrasive
used.
#3 A 2B finish processed with #100 AO
belt.
#4 Dairy or Food Service finish. A 2B
finish processed with #100 AO belts,
followed by #120 AO finish or
medium density non-woven.
#6 A # 4 finish which has been buffed.
A fine satin finish.
#7 A #4 finish followed by #180 then
#240 AO belts, the cut-buffed and
finally color-buffed to a reflective
finish. A bright finish with some grit
lines still visible.
#8 A #4 finish followed by #180, 240,
320 and 400 AO belts, followed by
cut-buffing, followed by color-buffing
to a mirror finish. No grit lines available. A convolute or similar wheel
may be used instead of the cut/color
buffing steps if acceptable.
SOFT VS HARD WHEELS
SOFT
HARD
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Shorter wheel life
High stock removal
Faster cut
Large contact areas
Less bond holding the
grain together
• For use on harder metals
Longer wheel life
Lower stock removal
Slower cut
Finer finishes
Small contact areas
More bond holding the
grain together
WHEEL THICKNESS
REFERENCE
CUT OFF WHEELS
GRINDING DISCS
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1/32" = .031"
3/64" = .045"
1/16" = .063"
5/64" = .078"
3/32" = .094"
1/8" = .125"
9/64" = .141"
176
1/8" = .125"
5/32" = .156"
1/4" = .250"
5/16" = .312"
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