Still available through UNITEC is the Otis Type 7063E Governor, a 1/2" rope diameter application with 16" sheave. Sheave and weights sub-assembly and jaw kits are options for those 7063E Governors which have been neglected.
Readily Available
JDA20610AAA9-500-UNITEC
16.5" for 350-500 feet per minute (FPM) car speeds with 1/2" ropes.
JDA20610AAA9-700-UNITEC
16.5" for 600-1200 feet per minute (FPM) car speeds with 1/2" ropes.
Readily Available
B7063A24-UNITEC
12" high pull through force for 150-400 feet per minute (FPM) car speeds with 3/8" ropes.
B7063A25-UNITEC
12" low pull through force for 150-400 feet per minute (FPM) car speeds with 3/8" ropes.
For 100, 125 and 150fpm applications, the Apollo type Governor (presently used on Otis Roped Hydro applications) incorporates a 12" sheave for 3/8" diameter ropes.