| Type |
Resistivity
(μΩm) |
Shore Hardness |
Bulk density
(g/cm3) |
Flexural strength
(MPa) |
Contact pressure drop
(V) |
Friction coefficient |
Rated current density
(g/cm2 ) |
Allow circumference speed
(m/s) |
The main purpose |
| ELECTROGRAPHITE |
| EGOR |
12 |
36 |
1.55 |
21 |
1.94 |
0.09 |
10 |
50 |
suitable for general DC motors,especlally for slip-rings |
CX25
EG19 |
22 |
32 |
1.45 |
9 |
2.40 |
0.18 |
10 |
41 |
goog filming and commutating ability particularly suitable for mill motors |
CA35
SA35 |
52 |
66 |
1.60 |
17 |
2.70 |
0.20 |
10 |
41 |
beat for normal commutation service,used on mill-type motors and generators |
CA40
SA40 |
57 |
64 |
1.58 |
15 |
3.00 |
0.20 |
15 |
41 |
good for commution service,slightly stronger than CA45,giving longer life |
CA45
SA45 |
63 |
62 |
1.56 |
11 |
3.80 |
0.20 |
15 |
41 |
an excellent commutation grade with longer life thangrade CA50 |
CA50
SA50 |
67 |
60 |
1.55 |
8 |
3.20 |
0.20 |
15 |
41 |
a brush for use where excellent commutating ability is of primary importance |
| EG236S |
45 |
57 |
1.60 |
19 |
2.10 |
0.10 |
12 |
50 |
medium high commutating grade for general DC applications |
| EG251 |
54 |
60 |
1.68 |
21 |
2.20 |
0.08 |
12 |
60 |
good commutating grade suitable for varying loads such as still mills |
| EG283 |
62 |
45 |
1.47 |
11 |
2.90 |
0.07 |
12 |
60 |
excellent commutating grade suitable for difficult commutating machines |
| ME377 |
60 |
65 |
1.55 |
13 |
3.00 |
0.11 |
12.5 |
60 |
excellent commutating grade for wide range of loads/low
humidity/polluted atmospheres |
| T563 |
76 |
58 |
1.58 |
16.5 |
1.70 |
0.22 |
12 |
41 |
a treated grade of excellent commutating and riding ability.has been used in many industrial application. |
| N19 |
61 |
76 |
1.61 |
19.3 |
2.50 |
0.19 |
10 |
41 |
recommended for low current density applications with normal commutation requirements.useful in paper mills and on exciters with no sustained loading above7.5A/cm2. |
| N48 |
71 |
59 |
1.58 |
13.8 |
2.50 |
0.19 |
15.5 |
51 |
a good commutating grade with the ability to run at low current density but also operated at sustained loading to9.5A/cm2. |
| N6000 |
60 |
66 |
1.55 |
13.8 |
2.40 |
0.19 |
15.5 |
41 |
very versatile grade used in low or variable humidity con ditions and where long periode of light loading are a factor this double treated grade usually gives much improved brush life with a great film appearance. |
| CE50 |
46 |
64 |
1.66 |
25 |
2.50 |
0.20 |
15.5 |
51 |
based grade ca35 treated but strong enough for general traction motors. |
| CN16 |
54 |
63 |
1.65 |
17 |
2.70 |
0.20 |
15.5 |
51 |
a treated grade combining good commutating ability and reasonable life. |
CE7
DE7 |
55 |
92 |
1.80 |
35 |
2.50 |
0.15 |
15.5 |
51 |
a grade for use in locomotive traction motors and wheel motors in off highway vehicles. |
| T900 |
51 |
72 |
1.68 |
31 |
1.70 |
0.22 |
12.5 |
41 |
excellent low humidity and high temperature grade used extensively in traction motors service. |
| G159W |
30 |
50 |
1.60 |
30 |
3.00 |
0.15 |
12 |
51 |
suitable for voltage regulator as contact. |
| ME778 |
55 |
70 |
1.83 |
17.5 |
2.30 |
0.14 |
15 |
51 |
excellent commutating grade treated to give wide operating range for electrical locomotive and light rail traction motors. |
| NATURE GRAPHITE |
| 634 |
18 |
20 |
1.28 |
5.2 |
2.50 |
0.29 |
10 |
81 |
excellent collecting ability used on high speed turbo-alternator steel slip-rings. |
| RESIN-BONDED |
| IM9101 |
102 |
39 |
1.85 |
50 |
3.10 |
0.05 |
8 |
30 |
suitable for low load applications or lightly contaminated atmospheres |
| IM31 |
270 |
38 |
1.70 |
20.5 |
3.60 |
0.10 |
10 |
35 |
suitable for low load applications or lightly contaminated atmospheres. |
| METAL-GRAPHITE |
| CM1S |
0.32 |
9 |
5.50 |
68 |
0.24 |
0.11 |
23 |
30 |
high metal content grade for earthing and plating applications. |
| CM3H |
0.20 |
10 |
4.30 |
27 |
0.52 |
0.10 |
16 |
25 |
well suited for slipring applications.also used on D.C.machines up to 12V. |
| CM5H |
0.35 |
15 |
3.90 |
23 |
0.86 |
0.09 |
14 |
30 |
suitable for up to 40V DC motor and slip rings for AC machines. |
| CM5B |
0.90 |
20 |
3.50 |
33 |
1.00 |
0.09 |
14 |
30 |
similar to CM5H good commutating ability suitable for up to 40V DC motor and slip rings for AC machines. |
| CM9 |
3.00 |
25 |
2.80 |
29 |
1.16 |
0.11 |
11 |
35 |
used on up to 60V DC generators/motors and slip rings for AC machines. |
| SM3 |
2.05 |
29 |
2.50 |
16.5 |
0.90 |
0.15 |
15 |
20 |
silver graphite grade for tachos and micro-motors. |
