Machine Design - MADE EASY Study Material for GATE, ESE and SES Exams

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Comparison of Rolling and Sliding Contact Bearing

Hydrodynamic Bearing Higher starting friction (torque) Load carrying capacity vary directly with speed. It is suitable for shock, fatigue. It

High compression strength High endurance endurance strength to avoid failure due to pitting. The bearing material should be soft to

It is done for hydro-dynamic bearing. Transition Graph From Thin Film to Thick Film Bearing characteristic number = μN/p, it

Thick Film Lubrication In this, two surface of bearing in relative motion are completely separated by a film of fluid.

For starting condition and at moderate speeds, the frictional loss in rolling contact bearing are lower than that of equivalent

Classification of Bearing • Depending upon type of friction Sliding contact bearing, e.g., plain bearing, journal bearing, sleeve bearing. In

Design of Spur Gear • Spur gears are used to transmit motion between two parallel axes shafts. • They are

Important Terms Used in Riveted Joint Pitch: It is the distance from the centre of one rivet to the centre

Material of Rivets The material of the rivets must be tough and ductile. They are usually made of steel, brass,

A rivet is a short cylindrical bar with head integral to it. The cylindrical portion of the rivet is called

(i) Strength of Butt Weld A butt welded joint, subjected to tensile force P, is shown in given figure. Here,

Butt Joints A butt joint is defined as a joint between two components lying approximately in same plane. It connects

Welding is a process of joining metallic parts by heating to a suitable temperature with or without application Advantages of

Threaded fastener designed to pass through holes in mating members and to be secured by tightening a nut from the

INTRODUCTION Fastener is an important member since machine is a huge structure, so for joining two plates together joining elements