Retrofitting an elevator machine with primary and secondary braking

A method of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms;

• the method comprising:
• removing the brake components;
• affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor;
• and
• mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine,
• wherein each flanged disc segment includes a radially extending flange and an axially extending band, each band including disc guide holes, the drum includes matching drum guide holes formed on its outer diameter surface, and affixing the flanged disc segments to the drum includes positioning guide members therethrough, for orienting each flanged disc segment against the drum.