518074-4

BRUSH
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About this product
The 518074‑4 brush is an aircraft‑grade carbon‑graphite contact brush designed for reliable electrical conduction and long life in rotating machinery. Molded to precise dimensions and formulated to resist arcing and wear, it ensures consistent performance in motors, generators, and auxiliary power units.
518074-4 Datasheet
Lead Time: Stock
Certification: TRACE
UOM: EA
8130/EASA Eligible: No
Stock Location: Dubai
PRODUCT DESCRIPTION

518074-4

  • Carbon‑Graphite Composition: Provides low contact resistance and excellent wear properties.

  • Arcing Resistance: Optimized material mix reduces sparking under load for extended life.

  • Low Humidity Sensitivity: Maintains conductivity in varying environmental conditions.

  • Self‑Lubricating: Graphite content reduces friction against commutator or slip ring surfaces.


  • Conducts current between the stationary wiring and the rotating armature during engine start.

  • Transfers electrical power across slip rings under high RPM operation.

  • Provides reliable conduction in small DC pump motors on the ground and in‑flight.

  • Power cabin air‑conditioning blowers during ground and flight cycles.


  • What materials resist arcing?

The carbon‑graphite blend includes copper fibers to minimize sparking and ensure smooth current transfer.

  • How often should brushes be replaced?

Inspect every 500 operating hours and replace when the length wears below 8 mm or the surface becomes pitted.

  • How does humidity affect performance?

Its formulation maintains low resistance in humidity up to 95% RH without significant conductivity loss.


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