Description

HYDRAULIC BEARING PULLER

SYNOPSIS

          This project is deals with design and fabrication of a hydraulic bearing puller, which is used for removing bearings from the shaft and the bearing cup with the help of a hydraulic

          Initially the bearing shaft is held between two fixtures. The hydraulic is passed to the direction control valve. The top fixture is moves up wards, so that the bearing is removed from the shaft.

INTRODUCTION

          The hydraulic bearing puller is used to removing the bearings in the shaft by holding the bearing shaft in between two fixtures.  One of the fixtures is movable and the other one is fixed. The principle of operation is the same as the conventional simple press.  The difference is being only in the type of drive and the type of fixtures used.

          The following points reveals why we have to make use of this type of press for removing bearings.

     Hydraulic bearing puller reduces the manual work.

     This type of machine reduces working time in removing bearings.

           By using this machine the bearings can be removed in the various lengths of shat (up to 600mm).

PRINCIPLE OF OPERATION

          The hydraulic bearing puller is used to removing bearings in the shaft up to a length of 600mm.  In the hydraulic bearing puller the main thing being the pressure developed is done with the help of a pump.  The oil in that pump is passed to the cylinder. 

                When the oil  is passed to the valve, the required speed of the piston is obtained by adjusting its knob.  When the oil  is passed to the valve, the up/downward movement of piston is controlled by the hand liver.  The bearing shaft is connected to the top fixture.  A bottom fixture is fixed on the bottom plate by using bolts and nuts.

Bearing Removing procedure:

The shaft is kept vertically between the top  fixture. The bearing shaft is kept in the top of the fixture. The remaining portion of the shaft touches the bottom fixture.

          At the same time the pump is loaded to get the pressure required and the hand operated valve is manually to move the piston.  The top fixture in the piston had inserted to its required position rod pushes the bearing which is placed on the shaft.  When the bearing has removed to its original position, there will not be any further down ward movement.  Then the valve is brought to the output position in which the air moves the piston upward and the shaft is removed.

ADVANTAGES

1.      It reduces the manual work

2.      It reduces the production time

3.      Uniform application of the load gives perfect removing of the bearing.

4.      Damages to the bearing due to the hammering is prevented

5.      It occupies less floor space

6.      Less skilled operator is sufficient