X. Chipping or brush (edges or brush breaking)
  Possible Causes Remedies
2 Vibration from external causes, i.e. forge hammer Remove causes - mount machine on shock absorbers
14 Mica proud Recess mica or use a more abrasive grade
16 Commutator too loose Tighten, use new mica and turn
19 Flats on commutator or slipring Remove cause while turning or grinding
29 Radial brush holders not in correct position Adjust holder to radial position, distance from commutator 2-3mm
30 Reaction type holder mounted trailing Reverse holders or direction of rotation
32 Worn brush holder Replace holder
34 Brush holder mounted too far from commutator or slipring Adjust holder to be 2mm from commutator
36 Unequal alignment of holders Correct spacing and alignment of holders
37 Humidity too low Humidify air  possibly change brush grade
40 Gas or acid fumes in atmosphere Arrange for clean air cooling
41 Long periods at low or steady load Change brush grade - ask for our recommendation

Where we Are

Unit 1, 120 Shad Road,
Wadeville Ext2
South Africa

Mail Us

P.O. Box 673
South Africa

Contact Us

Tel: +27 11 824-1168
Fax: +27 11 824-1356

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