Subtopic: Calculation of power, torque, fuel consumption, heat load and power losses
Question Statement:
According to standard agricultural engineering specifications (ASABE / ISO), a standard 540 rpm PTO shaft has a nominal outside diameter of $35\text{ mm}$ ($1\frac{3}{8}\text{ in}$) and possesses how many splines?
Options:
(A) 6 splines
(B) 21 splines
(C) 10 splines
(D) 18 splines
Answer Key:
A
Step-by-Step Solution & Explanation
Standard Type 1 PTO ($540\text{ rpm}$) has 6 splines with $35\text{ mm}$ ($1\frac{3}{8}\text{ in}$) diameter. Standard Type 2 PTO ($1000\text{ rpm}$) has 21 involute splines with $35\text{ mm}$ diameter.