How to Select Carbon Brushes for Motors and ... - Morgan AM&T
How to Select Carbon Brushes for Motors and ... - Morgan AM&T
How to Select Carbon Brushes for Motors and ... - Morgan AM&T
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
10<br />
Metal Graphite<br />
Brush<br />
Grade<br />
537<br />
AJT<br />
ANK<br />
AYK<br />
F83<br />
L4<br />
M2650<br />
M2665<br />
M2675<br />
M2688<br />
M407<br />
M540<br />
M5N<br />
M785<br />
Spec.<br />
Res.<br />
Ω-in.<br />
(µΩ-m)<br />
0.0003<br />
(8)<br />
0.00016<br />
(4)<br />
0.000006<br />
(0.2)<br />
0.000044<br />
(1.1)<br />
0.0450<br />
(1143)<br />
0.000014<br />
(0.38)<br />
0.000125<br />
(2.79)<br />
0.000025<br />
(0.76)<br />
0.000008<br />
(0.23)<br />
0.000015<br />
(0.38)<br />
0.000008<br />
(0.2)<br />
0.000015<br />
(0.38)<br />
0.000012<br />
(0.3)<br />
0.00027<br />
(7)<br />
Dens.<br />
g/cm³<br />
2.77<br />
3.00<br />
4.95<br />
2.64<br />
2.02<br />
4.57<br />
2.80<br />
3.50<br />
4.25<br />
5.40<br />
5.10<br />
5.40<br />
5.91<br />
3.20<br />
Trans.<br />
Strength<br />
lbf/in²<br />
(kgf/cm²<br />
3200<br />
(225)<br />
4700<br />
(331)<br />
3500<br />
(246)<br />
5000<br />
(352)<br />
2300<br />
(162)<br />
3100<br />
(218)<br />
3500<br />
(246)<br />
3800<br />
(268)<br />
3200<br />
(225)<br />
8000<br />
(563)<br />
2400<br />
(169)<br />
8300<br />
(584)<br />
6000<br />
(422)<br />
3000<br />
(211)<br />
Grade Properties Tabulation Disclaimer<br />
Con-<br />
tact<br />
Drop<br />
Friction<br />
VH M<br />
L L<br />
L L<br />
M M<br />
VH L<br />
L H<br />
L L<br />
L VL<br />
L L<br />
L L<br />
L M<br />
L H<br />
L M<br />
L H<br />
Surface<br />
Speed<br />
ft/min<br />
(m/sec)<br />
6000<br />
(30)<br />
6000<br />
(30)<br />
6000<br />
(30)<br />
4000<br />
(20)<br />
4000<br />
(20)<br />
5000<br />
(25)<br />
7000<br />
(36)<br />
6000<br />
(30)<br />
6000<br />
(30)<br />
6000<br />
(30)<br />
4500<br />
(23)<br />
5000<br />
(25)<br />
4000<br />
(20)<br />
6000<br />
(30)<br />
Normal<br />
Current<br />
Density<br />
A/in²<br />
(A/cm²)<br />
100<br />
(15.5)<br />
100<br />
(15.5)<br />
150<br />
(23.3)<br />
100<br />
(15.5)<br />
40<br />
(6.2)<br />
125<br />
(19.4)<br />
100<br />
(15.5)<br />
110<br />
(17)<br />
125<br />
(19.4)<br />
150<br />
(23.3)<br />
150<br />
(23.3)<br />
140<br />
(21.7)<br />
150<br />
(23.3)<br />
100<br />
(15.5)<br />
Abra<br />
siven<br />
ess<br />
%<br />
Met<br />
al<br />
L 48<br />
L<br />
40<br />
M 75<br />
L 40<br />
L 25<br />
M 75<br />
L 50<br />
L 65<br />
M 75<br />
M 88<br />
L 75<br />
M 85<br />
M 96<br />
L 50<br />
Description <strong>and</strong> Application<br />
Recommended <strong>for</strong>:<br />
24 – 50 volt DC mo<strong>to</strong>rs <strong>and</strong> AC<br />
mo<strong>to</strong>r collec<strong>to</strong>r rings where low<br />
humidity protection is required.<br />
High current/low voltage<br />
mo<strong>to</strong>rs exposed <strong>to</strong> high<br />
altitudes.<br />
Where high copper content<br />
<strong>and</strong> low humidity protection is<br />
needed.<br />
Applications of wound ro<strong>to</strong>r<br />
mo<strong>to</strong>r rings up <strong>to</strong> 100 APSI.<br />
Appliance mo<strong>to</strong>rs <strong>and</strong> other<br />
FHP applications <strong>and</strong> suitable<br />
<strong>for</strong> low current densities.<br />
Low-voltage mo<strong>to</strong>rs,<br />
particularly switch <strong>and</strong> signal<br />
equipment. Also used on<br />
plating genera<strong>to</strong>rs up <strong>to</strong> 15 volt<br />
<strong>and</strong> on brass slip rings of<br />
induction mo<strong>to</strong>rs.<br />
Slip rings <strong>and</strong> low voltage<br />
mo<strong>to</strong>rs (24 – 72 volts).<br />
Slip rings <strong>and</strong> low voltage<br />
mo<strong>to</strong>rs (6 – 24 volts).<br />
Slip rings <strong>and</strong> low voltage<br />
mo<strong>to</strong>rs (6 – 24 volts). Also can<br />
be used on slip ring<br />
applications when higher<br />
current density is needed.<br />
Plating genera<strong>to</strong>rs up <strong>to</strong> 15<br />
volts <strong>and</strong> conduc<strong>to</strong>r rolls.<br />
Where very low contact drop,<br />
<strong>and</strong> low friction are required.<br />
Also used on controllers <strong>and</strong><br />
control equipment.<br />
Low-voltage machines <strong>and</strong><br />
grounding brushes.<br />
Low voltage, high current<br />
applications where long brush<br />
life <strong>and</strong> minimum collec<strong>to</strong>r<br />
wear is desired.<br />
Low-voltage DC mo<strong>to</strong>rs <strong>and</strong><br />
genera<strong>to</strong>rs in the 24 <strong>to</strong> 72 volt<br />
range <strong>and</strong> on brass slip rings<br />
of induction mo<strong>to</strong>rs.<br />
The in<strong>for</strong>mation contained in this tabulation of material properties is based on experimental <strong>and</strong> / or his<strong>to</strong>rical trends <strong>and</strong> indicates guidelines<br />
<strong>for</strong> typical lots of materials. Choosing the correct grade <strong>for</strong> a particular application should not be based solely on physical properties. No<br />
guarantee of these properties is given or implied.<br />
9