Author Topic: Pneumatic Bearing Puller  (Read 3344 times)

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Pneumatic Bearing Puller
« on: January 15, 2017, 12:00:00 AM »
Submitted By :
V.N.Ashwin Vadhulya
S.Ganesan
S.Karthick
N.Thirumalaiah


[9476]
Pneumatic Bearing Puller
Synopsis

    This projects is deals with design and fabrication of a pneumatic bearing puller, which is used for removing bearings from the shaft and the bearing cup with the help of a compressor.
     Initially the bearing shaft is held between two fixtures. The compressed air is passed to the direction control valve. The top fixture is moves towards downwards, so that the bearing is removed from the shaft.
Introduction
    The pneumatic 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.
   Pneumatic 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 pneumatic bearing puller is used to removing bearings in the shaft up to a length of 600mm.  In the pneumatic bearing puller the main thing being the pressure developed is done with the help of a compressor.
    The air in that compressor is passed to the double acting cylinder through the control valves.  There are two types of control valves used in this press.  One is flow control valve and another one is the direction control valve.
     When the compressed air is passed to the flow control valve, the required speed of the piston is obtained by adjusting its knob.  When the air is passed to the direction control 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 bottom fixture and 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 compressor is loaded to get the pressure required and the hand operated valve is manually actuated from the neutral position to the input position 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
   It reduces the manual work.
   It reduces the production time.
   Uniform application of the load gives perfect  removing of the bearing.
   Damages to the bearing due to the hammering is  prevented.
   It occupies less floor space.
   Less skilled operator is sufficient.
Disadvantages
   Initial cost is high
   Cylinder stroke length is constant
   Need a separate compressor
Applications
   Bearing Pressing Operation in all industries
   Bearing Removing operation in all Industries
   Sheet metal bending in sheet metal industries
   Sheet metal bend removing in all industries
   Punching operation also done
   Riveting and metal forming also done with the help of separated male and female die.

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Pneumatic Bearing Puller
« on: January 15, 2017, 12:00:00 AM »

Guest

  • Guest
RE: Pneumatic Bearing Puller
« Reply #1 on: January 15, 2017, 12:00:00 AM »
Quote from: 'Guest' pid='167964' dateline='1398091217'
design formula and calculation for pneumatic bearing puller.. need very urgent..

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RE: Pneumatic Bearing Puller
« Reply #1 on: January 15, 2017, 12:00:00 AM »

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