APS BlackSteel brake discs are state-of-the-art CNC machined from a one-piece forging.
When the metal is forged, it creates a directional grain flow that follows the contour of the disc. This allows for a much stronger disc that has a reduced risk of the cracking and catastrophic failures associated with inferior welded designs.
The APS proprietary heat treatment has a two-fold purpose. The heat treatment strengthens the steel by bonding the carbon, oxygen and nitrogen in the top layer of the metal. This is not a coating that can wear off, as the steel itself is transformed. The heat treatment gives the steel its black appearance and provides the surface with a high resistance to the corrosion and oxidation associated with the extreme thermal cycling experienced in aircraft braking systems. This makes it an excellent choice for agricultural aircraft that work in a harsh, chemical environment, as well as for anyone who leaves their aircraft outside most of the time.
Product Details:
- FAA-PMA Approved
- Replaces Cleveland PN: 164-02000, 164-20 | Piper: 754-535
- Wheel Series: 40-86, 40-88
- Brake Series: 30-55, 30-56
- Bolt Holes: Quantity = 3 | Size = 5/16 inch
- Minimum Wear Thickness: 0.205 inch (5.207 mm)

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