Manufacturing Bearings

Masters
Essay
Technology
Pages 4 (1004 words)
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Bearings are the supporting element of the rotary equipments. The entire load of the rotary components is shared by the bearings. The bearings are designed differently based upon their loading application. The bearings are generally classified are friction and anti-friction bearings…

Introduction

The bearing used for this specific case of wind turbine is ball-bearings. The ball-bearings are used for low load and high speed machines.
The ball bearings are generally manufactured from steel material. This material is preferred choice due to its high strength, and resistance of corrosion and high fatigue strength. As per standard practice, the outer race of the ball bearing is manufactured from high alloy steel bar, in most of the cases the inner races, wear rings are also manufactured from the same material. The recommended steel alloy for such manufacturing is BMS-931 and 8720H.
The manufacturing process begins with the forging of the steel bar, the material is forged into different shapes like cups, cones etc. The forging process is generally hot forging; this process shall release thermal stresses from the material during the process. The forging process can be explained as, "exposure of the steel bar in the induction heater system, the heating process is halted after the temperature reaches the melting point of the material; at this temperature maximum formability for hot forging is attained". After the completion of hot forging, the material is pierced.
The material used for the manufacturing is SAE-521000; the material is used in the form of forged rings. ...
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