## A Shaft Rotating at Constant Speed is Subjected to Variable Load

PROBLEM A shaft rotating at constant speed is subjected to variable load. The bearings supporting the shaft are subjected to a stationary equivalent radial load of 3kN for 10% of the time, 2kN for 20% of the time, 1kN for 30% of the time, and no load for the remaining time of the cycle. If … Read more

## Single Row Deep Groove Ball Bearing Problem

PROBLEM Select a single row deep groove ball bearing with the operating cycle listed below, which will have a life of 15000 hours. Fraction of cycle Type of load Radial (N) Thrust (N) Speed (RPM) Service factor 1/10 Heavy shocks 2000 1200 400 3 1/10 Light shocks 1500 1000 500 1.5 1/5 Moderate shocks 1000 … Read more

## Find Number of Teeth for Gear and Angular Velocity Ratio

PROBLEM For the gearbox shown, we know the number of teeth for the following gears: Z1 = 20, Z2 = 34, and Z3 = 18. Shafts 0, B, and Z are coaxial. The gear sets have modules m12 = 4 mm and m34 = 3 mm. a) Determine the number of teeth for gear 4 … Read more

## Bell Crank – Uses, Angles, And Suspension

Linkages are essential components of machines that have moving elements. And it’s an assembly of rigid bodies connected by joints that can work together to transfer forces and movement. A bell crank, also known as an idler arm, is a type of linkage that is used to transfer force and movement through an angle. For … Read more

## Split Nut

Compared to the standard nut, the split nut is easier to install. Moreover, it has a higher inherent strength. Split Nut is a type of nut that is split into two equal pieces so it can be put on a shaft or bolt without disassembling it. And it has a female thread that may be opened … Read more

## Jack Chain

A jack chain is a type of chain that is constructed of thin wire and has links that are formed in the shape of an eight. It comes in a range of diameters, lengths, and load capacities. The jack chain may be produced either as a single or double jack chain. So, there are two types … Read more