A pinion having 18 teeth engages with an internal gear having 72 teet…

Question

A pinion having 18 teeth engages with an internal gear having 72 teeth. If the gears have involute profiled teeth with $20^\circ$ pressure angle, module of 4 mm and the addenda on pinion and gear are 8.5 mm and 3.5 mm respectively, find the length of path of contact.

Related pages

• interference — topic
• THEORY OF MACHINES syllabus

More PYQs on interference

• (a) What is a gear drive ? Also explain its advantages and disadvantages. A single reduction gear of 120 kW with a pinion 250 mm pitch circle diameter and spee…