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Safety Information
Sample of Wheel Label
Below is an example of a label that can be found on United Abrasives' wheels. We
feel it is important to include as much information as possible on our labels so
the end user has the pertinent information he needs to operate the wheel. All of
our labels are baked on the wheels during the manufacturing process, so the
label remains intact throughout the life of the wheel.

Storage and Handling
All abrasive wheels are breakable and therefore care shall be exercised in
handling and storage to prevent damage. The following rules, which are based on
experience, should be observed:
•
Handle wheel carefully to prevent dropping or bumping
•
Do not roll wheels (hoop fashion)
•
Use trucks or other suitable conveyances to provide support and protection in
transporting all wheels which cannot be carried by hand
•
Suitable racks, bins, drawers or boxes shall be provided to store the various
types of wheels used
•
Abrasive wheels should be stored in a dry area not subject to extreme
temperature changes since some bonds may be affected by excessive humidity and
temperature differentials
•
Racks should be located as near as practical to the grinding location, but never
where there is danger of damage from passing trucks, crane handling equipment or
excessive vibration
ANSI Standard Marking System
The following chart is an example of the ANSI standard marking system for
identifying grinding wheels and other bonded abrasives
| A |
24 |
R |
BF |
|
Primary grain used
to make the wheel
A = Aluminum Oxide
C = Silicon Carbide
Z = Alumina Zirconium
SG = Seeded Gel |
Size of the
abrasive grain
Coarse Medium Fine Very Fine
8
30 70
220
10
36 80
240
12
46 90
280
14
54 100
320
16
60 120
400
20
150 500
24
180 600 |
Hardness of the
bond
Soft Medium
Hard
A N
R T
Z |
Type of bond used
B Resinoid
BF Resinoid Reinforced
E Shellac
O Oxychloride
R Rubber
RF Rubber Reinforced
S Silicate
V Vitrified |
Wheel
Configurations
Bonded abrasive wheels have different configurations depending upon the tool the
wheel is used on and the desired end result. Below are the configurations that a
wheel can have:
Each
wheel configuration is shown on the pages throughout this catalog. The A, B, and
C connotations represent the size of the wheel.
A = The diameter of the wheel
B = The width or thickness of the wheel
C = The bore of the wheel
| Type 1 |
 |
Straight Wheel |
|
|
|
| Type 27 |
 |
Depressed Center
Wheel |
Type 16 |
 |
Rounded Cone |
| Type 28 |
 |
Saucer-shaped Wheel |
Type 17 |
 |
Straight Sided Cone |
| Type 29 |
 |
Flexible Wheel |
Type 18 |
 |
Plug |
| Type 11 |
 |
Flaring Cup Wheel |
Type 18R |
 |
Round Plug |
Important:
The following information about safety should be used only as a guide.
All products listed in this catalog shall be used in accordance with
safety regulations set by OSHA and by the directive described by the
American National Safety Institute B7.1, the Canadian Standard
Association Safety Code B-173-5 and by the American Brush Manufacturers
Association covering: Speed, Safety Guards, Flanges, Mounting
Procedures, General Operating Rules, Handling, Storage, and Inspection
of General Machine Conditions.
Warning:
Avoid inhalation of dust generated by grinding and cutting operations.
Exposure to dust may cause respiratory ailments as well as irritation to
eyes and skin. In most cases, a greater hazard is the exposure to the
dust/fumes from the base material being ground or paint or coatings
applied to it. Use approved NIOSH or MSHA respirators, safety glasses or
face shields, gloves and protective clothing. Provide adequate
ventilation to eliminate dust or to maintain dust levels below the
permissible exposure level for nuisance dust as classified by OSHA.
Refer to Material Safety Data Sheet for further information.
All operators must read and understand safety information thoroughly.
Follow Safety Instructions:
You must follow all operator and safety instructions, as well as all
common safety practices which reduce the likelihood of physical injury.
Operate Wheels at Recommended Speeds:
It is imperative that abrasive wheels be operated at recommended safe
speeds. For safety reasons no abrasive wheel shall be operated at a
speed greater than that indicated on the blotter or wheel. |
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Do's and Don'ts |
•
Do always handle and store wheels in a
careful manner.
•
Do visually inspect all wheels before
mounting for possible damage.
•
Do make sure operating speed of machine
does not exceed speed marked on wheel, its blotter or container.
•
Do check mounting flanges for equal size,
relieved as required & correct diameter.
•
Do use mounting blotters as required by
ANSI standards.
•
Do be sure work rest is properly adjusted
on bench, pedestal and floor stand grinders.
• Do always use safety guard that covers a
minimum of one-half (1/2) the abrasive wheel.
• Do allow newly mounted wheels to run at
operating speed, with guard in place, for at least one minute before
grinding.
•
Do always wear safety glasses or some
type of approved eye protection while grinding or cutting.
•
Do turn off coolant before stopping wheel
to avoid creating an out of-balance condition.
•
Do follow common sense safety
considerations.
•
Do follow federal, state and local laws
and regulations. |
• Don’t use a wheel that has been dropped
or appears to have been abused.
• Don’t force a wheel onto the machine or
alter the size of the mounting hole. If wheel won’t fit the machine, get
one that will.
• Don’t ever exceed maximum operating speed
established for the wheel.
• Don’t
use mounting flanges on which the
bearing surfaces are not clean, flat and smooth.
• Don’t
tighten the mounting nut
excessively.
• Don’t grind on the side of conventional,
straight or Type 1 wheels.
• Don’t use a wheel on any machine that is
not properly designed for the specific application of the wheel.
• Don’t start the machine until the safety
guard is properly and securely in place.
• Don’t
jam work into the wheel.
• Don’t
stand directly in front of a
grinding/cutting wheel whenever a machine is in operation.
• Don’t grind or cut material for which the
wheel is not designed. |
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