Wheels Coding

Coding system for ISHAM's grinding wheels

Example:

11 V 9 D100 – T35 – U10 – X3 – V70 – H20 D 91 –N 100 –H –AL
I II III IV V VI VII VIII IX X
I – the number for body shape
1 Straight wheel with no recess, D/H < 1,8
2 Ring, D/H < 1,8
3 Straight wheel with boss one side
4 Straight wheel, tapered one side
6 Straight wheel, recessed one side
9 Double-recessed wheel
11 Taper cup wheel with angle between 45° and 90°
12 Flaring cup with angle greater than 45°
14 Straight wheel with boss two sides
II – the number for abrasive layer shape
A
D
FF
L
QQ
AH
DD
G
LL
S
B
E
H
M
U
C
EE
J
P
V
CH
F
K
Q
Y
III – the number for abrasive layer position
1 Layer is attached to the body's periphery and spread over its entire thickness
2 Attached to the side face of the wheel
3 Attached to both sides of the wheel
4 Attached to the metal core’s side face with a bevel extending to the wheel's lower center
5 Attached to the side face with an arc extending from a low position on the wheel’s periphery towards its higher center
6 Attached to body's periphery but not extended to the whole width of metal core
7 Attached to the metal core’s side face, may reach the center, but it is not spread to the periphery
8 Wheel's body consists of only abrasive grains
9 Attached to wheel’s periphery and to one of the corners
10 Attached to the metal core’s internal circumference
IV – dimensions
D – diameter
T – thickness
U – diamond layer width
W – layer width
X – diamond layer thickness
V – face angle
H – hole diameter
V – abrasive
D – diamond
B – cubic boron nitride
VI – grit size
Average size of abrasive particles is specified in µm
VII – bond hardness
J soft
L
N medium
P
R hard
VIII – concentration
50 – 2.2 carats/cm³
75 – 3.3 carats/cm³
100 – 4.4 carats/cm³
125 – 5.5 carats/cm³
150 – 6.6 carats/cm³
IX – bond
R – resin
P – polyimide
H – hybrid
X – body material
AL – aluminum
CS – carbon steel
SC – sintered copper
ST – steel