Location : Products >> BONDED ABRASIVES >> Grinding Wheels Marking Chart

   
 

ABRASIVE
SYMBOL

GRIT SIZE

GRAIN
COMB.

GRADE

STRUCTURE

BOND

MAX SPEED
(M/S)

A   Brown A/O
 FA   Off White
 WA   White A/0
 SA   Single
      Crystal A/O
 PA   Pink A/O
 MA   Micro
      Crystal A/O
 WA/A Mixture A/O
 SA/A Mixture A/O
SA/PA Mixture A/O
PA/WA Mixture A/O
A/GC  Mixture
      A/0 & SiC
C     Black SiC
GC    Green SiC
GC/C  Mixture SiC

COARSE MEDIUM FINE  VERY                      FINE
10    36    100
    W63  12    40    120    W50  14    46    150    W40 16    54    180    W28  20    60    220    W20 22    70           W14
24  
 80           W10
30    90         
 W7
                 
 W5
              

 

1
2
3
4
5
6
7
8

 

 

 

 

SOFT MEDIUM HARD
ABC 
   K     P
 D      L     Q
 E      M     R
 F      N     S
 G            T
 H            Y
 J

  

 

DENSE MEDIUM OPEN
  1      6     10
  2      7     11
  3      8     12
  4      9     13
  5            14
                  15
 
              16
               17
               18

VITRIFIED RESINOID
VN1            B1
VN5            B2
VN7            B3
VN9            B4
VN13           B5
VN16           PVA

VP17
           PUA
VP18           PF
VP23
VH22

RUBBER  SHELLAC
R1    
         E
R2

20
30
35
40

45

50
60
80
 

TYPICAL
MARKING:
A  60  (1)*  K   8   V(P17)*  45
Note*:"numbers &  bond numbers are not actually marked,  they are for manufacturer's reference only.


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