Annotation of standard text SAE J621 :
This SAE Standard defines installation dimensions of industrial power take-offs with driving ring-type overcenter clutches.
Table 1 and Figure 1 give dimensions for power take-offs. For dimensions and tolerances of power take-off flanges and flywheels, see SAE J617 and J620, respectively.
SUBJECT TAXONOMY: Fuels and Energy Sources, Parts, Power and Propulsion, Vehicles and Performance
SUBFILE: Automotive
TYPE OF DOCUMENT: Ground Vehicle Standard
Stabilized: Oct 2012 