The main material being used for production of diamond tools is diamond. The diamonds exist in 12 classes. They can be natural or synthetic, ground or not ground The main weight unit is carat.
Size, type and quality of used grit have a crucial influence on the process of grinding treatment, therefore its proper selection has a decisive influence on achieved results.
Concentration defines the quantity of diamond grit in unit of okre¶la ilo¶ę ziarna diamentowego w jednostce of volume of working layer of wheel. Standard values of grit concentration in wheels are shown in the table:
Standard values of grit concentration
| Concentration mark |
Grit content [carat/cm3] |
| C25 |
1.1 |
| C50 |
2.2 |
| C75 |
3.3 |
| C100 |
4.4 |
| C125 |
5.5 |
Comparison of grit standards
|
FEPA
standard
|
SO R 565 1972
mm
|
ASTM-E-11-70
mesh |
ĘSN 224015
mm |
DIN 848 - 06/1965
mm |
| D 1181 |
1180 / 100 |
16 / 18 |
|
|
| D 1001 |
1000 / 850 |
18 / 20 |
|
|
| D 851 |
850 / 710 |
20 / 25 |
|
|
| D 711 |
710 / 600 |
25 / 30 |
|
|
| D 601 |
600 / 500 |
30 / 35 |
|
D 550 |
| D 501 |
500 / 425 |
35 / 40 |
500 /400 |
D 450 |
| D 426 |
425 / 355 |
40 / 45 |
400 / 315 |
|
| D 356 |
355 / 300 |
45 / 50 |
315 / 250 |
|
| D 301 |
300 / 250 |
50 / 60 |
315 / 250 |
D 280 |
| D 251 |
250 / 212 |
60 / 70 |
250 / 200 |
D 220 / D 180 |
| D 213 |
212 / 180 |
70 / 80 |
200 / 160 |
D180 |
| D 181 |
180 / 150 |
80 / 100 |
160 / 125 |
D 180 / D 140 |
| D 151 |
150 / 125 |
100 / 120 |
160 / 125 |
D 140 |
| D 126 |
125 / 106 |
120 / 140 |
125 / 100 |
D 110 |
| D 107 |
106 / 90 |
140 / 170 |
100 / 80 |
D 110 / D 90 |
| D 91 |
90 / 75 |
170 / 200 |
80 / 63 |
D 90 |
| D 76 |
75 / 63 |
200 / 230 |
80 / 63 |
D 65 |
| D 64 |
63 / 53 |
230 / 270 |
63 / 50 |
D 55 |
| D 54 |
53 / 45 |
270 / 325 |
50 / 40 |
D 45 |
| D 46 |
45 / 38 |
325 / 400 |
40 / 36 |
D 45 / D 35 |
| D 39 |
38 / 25 |
400 / 500 |
36 / 25 |
D 35 |
Comparison of micron-grit standards
|
FEPA
standard
|
SO R 565 1972
mm
|
ASTM-E-11-70
mesh |
ĘSN 224015
mm |
DIN 848 - 06/1965
mm |
| M 63 |
42 - 84 |
|
60 /40 |
|
| M 40 |
27 - 53 |
|
40 / 28 |
D 30 |
| M 25 |
16 - 34 |
|
28 / 20 |
D 25 |
| M 16 |
10 - 22 |
|
20 / 14 |
D 15 |
| M 10 |
6 - 14 |
|
10 / 7 |
|
| M 6,3 |
4 - 9 |
|
7 / 5 |
D 7 |
Recommended standard dimensions of diamond section according to glass thickness and DIAMENT catalogue, refers to 1DD6Y wheels (flat glass) - all dimensions in mm
|
Glass
thickness
mm
|
T
|
W
standard
|
W1
standard
|
T
|
W
|
W1
|
|
3
|
5
|
4
|
2
|
|
|
|
|
4
|
6
|
5
|
2,5
|
|
|
|
|
5
|
7
|
6
|
3
|
9
|
8
|
3
|
|
6
|
8
|
7
|
4
|
10
|
9
|
4
|
|
8
|
10
|
9
|
5
|
12
|
11
|
5-6
|
|
10
|
12
|
11
|
8
|
14
|
13
|
7
|
|
12
|
14
|
13
|
10
|
16
|
15
|
8-9
|
|
15
|
17
|
16
|
13
|
19
|
18
|
11
|
|
19
|
21
|
20
|
17
|
23
|
22
|
14
|
NOTE! Other dimensions on request
Recommended standard dimensions of diamond section according to glass thickness
refers to 1FF6Y wheels (flat glass) - all dimensions in mm
|
glass
mm
|
T
|
W
|
R
standard
|
R
bullnose
|
|
3
|
5
|
4
|
2.5
|
2.0
|
|
4
|
6
|
5
|
3.0
|
2.5
|
|
5
|
7
|
6
|
3.5
|
3.0
|
|
6
|
8
|
7
|
4.0
|
3.5
|
|
8
|
10
|
9
|
5.0
|
4.5
|
|
10
|
12
|
11
|
6.5
|
5.75
|
|
12
|
14
|
13
|
7.5
|
6.25
|
|
15
|
17
|
16
|
10.0
|
8.25
|
|
19
|
21
|
20
|
11.5
|
10.25
|
NOTE! Other dimensions on request
Diamond griding wheel rotation speed rate (r.p.m.) depending on linear velocity of diamond wheels
|
|
Linear velocity n[r.p.m]
|
|
Diameter
|
25 m/s
|
30 m/s
|
50 m/s
|
80 m/s
|
|
35
|
13649
|
16379
|
27298
|
43676
|
|
40
|
11943
|
14331
|
23885
|
38217
|
|
50
|
9554
|
11465
|
19108
|
30573
|
|
60
|
7962
|
9554
|
15924
|
25478
|
|
75
|
6369
|
7643
|
12739
|
20382
|
|
80
|
5971
|
7166
|
11943
|
19108
|
|
100
|
4777
|
5732
|
9554
|
15287
|
|
120
|
3981
|
4777
|
7962
|
12739
|
|
125
|
3822
|
4586
|
7643
|
12229
|
|
150
|
3185
|
3822
|
6369
|
10191
|
|
200
|
2389
|
2866
|
4777
|
7643
|
|
250
|
1911
|
2293
|
3822
|
6115
|
|
300
|
1592
|
1911
|
3185
|
5096
|
|
350
|
1365
|
1638
|
2730
|
4368
|
|
400
|
1194
|
1433
|
2389
|
3822
|
|
500
|
955
|
1146
|
1911
|
3057
|
Recommended rotation speed range depending on diamond core drill diameter
|
Drill diameter
mm
|
Rotation speed range n[r.p.m.]
|
|
Od
|
Do
|
|
5
|
4500
|
6000
|
|
10
|
1750
|
4300
|
|
15
|
1200
|
3000
|
|
20
|
1000
|
2200
|
|
25
|
850
|
1700
|
|
30
|
750
|
1500
|
|
35
|
650
|
1350
|
|
40
|
600
|
1250
|
|
45
|
500
|
1150
|
|
50
|
450
|
1100
|
|
55
|
400
|
1000
|
|
60
|
350
|
950
|
|
65
|
320
|
850
|
|
70
|
300
|
820
|
|
75
|
280
|
780
|
|
80
|
250
|
750
|
|
85
|
220
|
700
|
|
90
|
210
|
650
|
|
95
|
200
|
610
|
|
100
|
200
|
580
|
