Inserted risers are generally comprised of flat copper strips with a high silver content and come in various shapes and lengths, depending on the application it's used for. Riser style and shape can be customized to suit winding leads. Each riser is fit into a notch or slot machined into each of the commutator segments. Each riser strip is then brazed or tig welded into place.
V-ring, glass banded, and external shrink ring commutators can all have inserted risers.
Commutators with inserted risers are often less desirable than commutators with solid risers because of their susceptibility to stresses and vibrations within the motor. However, in many circumstances, because of the extremely long risers, they are the most viable and economical solution. In some cases, insulated spacers and or braided rope with a thermosetting resinous material may need to be installed. This will provide an increase in resistance to stress without increasing the mass of the riser.
EMCC/Thistle Industries can repair, re-fill, or re-engineer commutators to the specific needs of our customers. EMCC produces solid, single inserted, double inserted, fold-over, lap joint, as well as inserted to solid riser conversions.
30+ Years Experience
High Silver Content Alloy 116 Copper Bar Material
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All Riser Types
Quantities from 1 - Unlimited
Risers Custom To Suit
24/7 Emergency Repairs
When failures occur, EMCC has the capacity and ability to work around the clock to manufacture or service the commutators and coils you need. 24/7 production capability allows EMCC to deliver unmatched quality, with the best turnaround times in the industry. Often, coils within 24-hours and commutators between 24-48 hours.