Diamond & CBN Grinding Wheels
for Ultra-Performance Tool Grinding
on CNC & Manual Machines

Our Diamond & CBN wheels are available in metal, resin, and hybrid bonds.

View our iQ Catalog for product details.

Our services include providing custom formulations when enhancing production output is viable.

Resources

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For information on specific products, including price and availability, contact us or email sales@toolgalusa.com.

Catalogs

iQ Grinding Wheels Catalog

Natural Diamond Grit Size Conversion Chart

India
GB/T6406-2006		 FEPA-1977 America
ANSI B74.16-197		 Japan
JIS4130-1982		 Germany
DIN848-1988		 Russia
ROCT9202-80
Grit Mesh Grit Mesh Grit Mesh Grit Mesh Grit Mesh Grit Mesh
20/25 850/710 D851 850/710 20/30 850/600 20/30 850/600 D851 850/710 1600/1250 1600/125
25/30 710/600 D711 710/600 D711 710/600 1250/1000 1250/1000
30/35 600/500 D601 600/500 30/40 600/425 230/40 600/425 D601 600/500 1000/800 1000/800
35/40 500/425 D501 500/425 D501 500/425 800/630 800/630
40/45 425/355 D425 425/355 40/50 425/300 40/50 600/425 D426 425/355 630/500 630/500
45/50 355/300 D356 355/300 D356 355/300 500/400 500/400
50/60 300/250 D301 300/250 50/60 300/250 50/60 600/425 D301 300/250 400/315 400/315
60/70 250/212 D251 250/212 60/80 250/180 60/80 600/425 D251 250/212 315/250 315/250
70/80 212/180 D213 212/108 D213 212/180 250/200 250/200
80/100 108/150 D213 108/150 80/100 180/100 80/100 600/425 D181 108/150 200/160 200/160
100/120 150/125 D151 150/125 100/120 150/125 100/120 150/125 D151 150/125 160/125 160/125
120/140 125/106 D126 125/106 120/140 125/106 120/140 125/106 D126 125/106 125/100 125/100
140/170 106/90 D107 106/90 140/170 106/90 140/170 106/90 D107 106/90 100/80 100/80
170/200 90/75 D91 90/75 170/200 90/75 170/200 90/75 D91 90/75 80/63 80/63
200/230 75/63 D76 75/63 200/230 75/63 200/230 75/63 D76 75/63 63/50 63/50
230/270 63/53 D64 63/53 230/270 63/53 230/270 63/53 D64 63/53 50/40 50/30
270/325 53/45 D54 53/45 270/325 53/45 270/325 53/45 D54 53/45
325/400 45/38 D46 45/38 325/400 45/38 270/325 45/38 D46 45/38

Micron Diamond Conversion Chart

Dimond
FEPA - Standard		 CBN
FEPA - Standard		 Dimond + CBN
mesh size		 Nominal mesh size
in µm
D 1181 D1182
D 1001		 B 1181
B 1001		 16-18 16-20
18-20		 1000-1180
850-1000
D 851 D 852
D 711		 B 851
B 711		 20-25 20-30
25-30		 710-850
600-710
D 601 D 602
D 501		 B 601
B 501		 30-35 30-40
35-40		 500-600
425-500
D 426 D 427
D 356		 B 426
B 356		 40-45 40-50
45-50		 355-425
300-355
D 301 B 301 50-60 250-300
D 251 D 252
D 213		 B 251
B 213		 60-70 60-80
70-80		 212-250
180-212
D 181
D 151
D 126
D 107		 B 181
B 151
B 126
B 107		 80-100
100-120
120-140
140-170		 150-180
125-150
106-125
90-106
D 91
D 76
D 64
D 54
D 46		 B 91
B 76
B 64
B 54
B 46		 170-200
200-230
230-270
270-325
325-400		 75-90
63-75
53-63
38-45
Micron grit sizes
D 35
D 30
D 25
D 20
D 15
D 10
D 7
D 3
D 1		 B 91
B 76
B 64
B 54
B 46		 170-200
200-230
230-270
270-325
325-400		 75-90
63-75
53-63
38-45
D 35
D 30
D 25
D 20
D 15
D 10
D 7
D 3
D 1

B 30


B15



30-40
25-35
20-30
15-25
10-20
6-12
4-8
2-4
1-2

Abrasive Crystal Size and Count

Mesh Size FEPA Size
D=Diamond, B=CBN		 Theoretical Median
Particle Diameter (mm)		 Approx. Crystal
Count per Carat*
20/30 D 852 0.760 175
30/40 D 602 0.539 500
40/50 D 427 0.378 1,410
50/60 D 301 0.288 4,025
60/80 D 252 0.226 6,860
80/100 D 181 0.174 18,510
100/120 D 151 0.148 31,880
120/140 D 126 0.123 54,870
140/170 D 107 0.103 89,600
170/200 D 91 0.086 145,650
200/230 D 76 0.075 250,050
230/270 D 64 0.066 418,700
270/325 D 54 0.057 697,050
325/400 D 46 0.048 1,127,650

*Based on spherical particles