The H40 is an ultra heavy duty encoder whose internal structure is totally
isolated from severe shock and shaft loading conditions. The optics and
electronics are supported in shock absorbing material within the heavy
cast outer housing. The encoder shaft is flexibly coupled to the high load
capacity bearings and shaft assembly, which is carried in the outer
housing. The entire bearing assembly is field-removable
to permit proper shaft support while pressing pulleys, gears, etc. onto the shaft. An Underwriters
Laboratories listed version of this model is available.