Page 124 - Hitachi Power Tools 2015

120
ABRASIVES / DIAMOND BLADES
1-800-829-4752
ABRASIVES / DIAMOND BLADES
Grinding/Cutting Wheel Information Guide
fMulti-Layer Construction
Top Layer of Glass Fiber
protects the worker against chipping off of abrasive grains.
Fine Grit Layer on Top
for better connection with glass fiber reinforcement, increases safety and acts like a backup for the coarse grit.
Coarse Grit Layer on Bottom
improves stock removal rate and keeps grinding much longer because the fine grit backup allows greater force against the coarse grit.
Bottom Layer of Glass Fiber
half as thick as most competitors, allowing for better start up because the grains act right from the beginning (fiber glass does not grind).
Coarse and Fine Grit Combination
allows to influence the surface finish on the work piece by altering the grinding angle or movement in direction to or away from the worker.
ANSI Standard Marking System
For identifying grinding wheels and other bonded abrasives. Sample: A 60 Q-BF
A
Material
A = Aluminum
C = Silicon Carbide
Z = Aluminum Zirconium SG = Seeded Gel
60
Q
Hardness of Bond
BF
Type of Bond
B = Resinoid
BF = Resinoid Reinforced E = Shellac
O = Oxychloride
Grit Size
Coarse Medium Fine Very Fine Soft Medium Hard 8 30 70 220
10 12 14 16 20 24
36 80 240 46 90 280 54100320
AQRSZR=Rubber
RF = Rubber Reinforced
S = Silicate V = Vitrified
60 120 - 150 - 180
400 500 600
Industry Color-Coded System
METAL / GENERAL PURPOSE
CONCRETE / MASONRY
STAINLESS
PIPELINE ASPHALT ALUMINUM
ff