TECHNICAL
INFORMATION
483
TECHNICAL INFORMATION
BOND TYPES
ORGANIC
These bonds are used in two types of wheels. Firstly, wheels used on portable or fixed machines for the
rapid removal of metal. Secondly, cutting-off wheels either un-reinforced or reinforced, for use on portable
or fixed machines. The most common organic bonds are:
SNAGGING WHEELS & CUPS
B & B3
Foundry wheels: multi-purpose bond that gives satisfactory results on most applications
B28
Foundry wheels: high level bond suitable for most technical applications requiring high powered machines
CUTTING˜OFF WHEELS
BF1
Specific bond ensuring the best quality of cut in dry or wet conditions
BF3
New generation bond assuring the best wheel life in dry cutting operations; versatile & long wheel life.
Ideal for heavy duty operations
B24
New generation bond used on silicon carbide cut-off wheels that gives the best performance & the ultimate
cut quality on non-ferrous metals in wet conditions
B25
Standard multi-purpose bond that offers durability & freeness of cut in a wide variety of materials
& applications. Can also be used in wet cutting on softer grades
B26
New generation bond used on aluminium oxide cut-off wheels that gives the best performance
& the ultimate cut quality on ferrous metals in wet conditions
B65
Traditional bond gives good performance & long wheel life in dry cutting conditions
WHEEL GRADES
The grade indicates the relative holding power of the bond, which holds abrasive grains in a wheel.
This is represented in the specification by letters running through the alphabet from hardest to softest.
The following rules should be followed with regard to grade:
USE SOFT GRADE
•
For hard materials such as hard tool steels
& carbides
•
For large areas of contact
•
For rapid stock removal
USE HARD GRADE
•
For soft materials
•
For small or narrow areas on contact
•
For longer wheel life
COMMON RANGE OF GRADES
E F G H I
J
K L M N O P Q R S T
U
CYLINDRICAL/CENTRELESS
SURFACE GRINDING
ID GRINDING
TOOL GRINDING
THREAD GRINDING
NON-REINFORCED ORGANIC
REINFORCED ORGANIC
1...,473,474,475,476,477,478,479,480,481,482 484,485,486,487,488,489,490,491,492,493,...505