Design and Fabrication of Hydraulic Bearing Puller and

IJIRST –International Journal for Innovative Research in Science & Technology| Volume 1 | Issue 11 | April 2015
ISSN (online): 2349-6010
Design and Fabrication of Hydraulic Bearing
Puller and Pusher
Rakesh Y. Suryawanshi
UG Student
Department of Mechanical Engineering
K.D.K.C.E., Nagpur
Pranay S. Ramteke
UG Student
Department of Mechanical Engineering
K.D.K.C.E., Nagpur
Niraj Patil
UG Student
Department of Mechanical Engineering
K.D.K.C.E., Nagpur
Deepak Kumar
UG Student
Department of Mechanical Engineering
K.D.K.C.E., Nagpur
Dr. A.V. Vanalkar
Department of Mechanical Engineering
K.D.K.C.E., Nagpur
Now a day’s hydraulic system plays very important role in almost all the application. As in automobile industries, small service
center, aircraft industries and used where precision is required. Traditional method of bearing removal or installation is
hammering, but unnecessary hammering causes several problems. The unsafe and excessive hammering cause’s damage of
bearing surface or sometimes chance to failure and excessive human effort required. In order to remove or installed bearing
safely, to make modification in traditional method. The modification made in easy removing and installing bearing. The purpose
of modification are required less human effort , simplicity of operation , Removing and installing bearing done without damaging
bearing surface, compact, portable and well suited .The hydraulic bearing puller based on hydraulic system on the principle of
Pascal’s law which states that “ Pressure distribution in enclosed cylinder is uniform in all direction.
Keywords: Hydraulics, Principles Of Hydraulics, Pascal's Law of Hydraulics, Hydraulic Jack, Working of Hydraulic
Jack, Bearing Pulling and Pushing Mechanism, Cad Model
The hydraulic bearing puller and pusher is a device which is used for removing as well as installing bearing on the shaft. In the
machine the press fit operations are very complicated to align the assembly. For this type of operations required heavy force for
assembly & dissembling the bearing from the machines. It can widely & effectively used for removing the bearing. Bearings are
made to exacting tolerances and have very fine surface finishes. In order to maintain the geometrical precision and the surface
integrity of ball and roller bearing raceways and rolling elements, it is mandatory that care in storage, handling and installation
be observed. The hydraulic bearing puller and pusher perform both pulling and pushing operation safely and without harming
bearing surfaces.
In order to remove bearing safely, to make modification in traditional method. The modification made in easy removing and
installing bearing. The purpose of modification are,
1) Simplicity of operation.
2) Removing and installing of bearing done without damaging bearing surface.
3) Compact, portable and well suited.
4) Low cost.
5) An individual can perform the operation.
6) Life of bearing increase.
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Design and Fabrication of Hydraulic Bearing Puller and Pusher
(IJIRST/ Volume 1 / Issue 11 / 027)
A. Hydraulic's:
The word hydraulics’ concerned with study of behavior of water at rest and at motion i.e. behavior of liquids. Hydraulics’
includes properties, advantages and applications of liquids. The two main scientists give the direction to forward, one is Daniel
Bernoulli and another is Blase Pascal. Bernoulli's conducted an experiment on fluid flow and gives fluid flow equation to the
world and at same period Pascal developed science of hydraulics.
B. Pascal's Hydraulic Principle:
According to Pascal's law "The fluid pressure in an enclosed vessel’s is uniform in all direction". Consider a vessels having two
surfaces and having area A1 and A2 respectively. Also F1 and F2 be the forces acting on area A1 and area A2.
Fig. 1: Pascal's Hydraulic Model
Considering surface 1 having area A1 and force F1.Therefore, Pressure acting on surface 1 is given by,
P1 = F1 / A1
P2 = F2 / A2
As the pressure is same in all the direction, the smaller piston feels a smaller force and a large piston feels a large force.
Therefore, a large force can be generated with smaller force input by using hydraulic systems.
P1 = P2
F1 / A1 = F2 / A2
Fluid does not absorb any kind of supplied energy and it is capable of moving much higher load's and Providing much higher
forces due to the incompressibility.
C. Hydraulic Jack:
Hydraulic Jack is perhaps one of the best examples of fluid power system. It plays very important role in automobile industries to
facillate servicing and repair. It may be portable device. By operating handle of small device and individual can lift load of
several tons. Hydraulic jack works on the principle of Pascal's. Hydraulic Jack consists of Cylinder, Plunger, and Handle, Oil
reservoir, Pressure release and relief valve.
When the handle is operated, the plunger reciprocates then the oil from the reservoir is sucked into the plunger cylinder during
upward stroke of the plunger through the suction valve. The oil in the plunger cylinder is delivered into the ram cylinder during
the downward stroke of the plunger through the delivery valve. This pressurized oil lifts the load up, which is placed on top plate
of the ram. After the work is completed the pressure in the ram cylinder is released by unscrewing the lowering screw thus the
pressure releases and the ram is lowered, then the oil is rushed into the reservoir.
D. Traditional Method of Bearing Removal:
Traditionally, bearing removal and installation done by hammering, but such hammering causes several problems. They are,
1) Excessive hammering causes damage of bearing surfaces and sometimes chance to failure.
2) More effort required to install and remove bearing because of hammering.
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Design and Fabrication of Hydraulic Bearing Puller and Pusher
(IJIRST/ Volume 1 / Issue 11 / 027)
Fig. 2:
Fig. 3:
Hydraulic puller and pusher perform both the operation i.e. removal of bearing and installation respectively. Hydraulic pulling
consists of adjustable mechanical jaw puller inbuilt with the hydraulic jack. When pump operated, plunger comes outside. Then
mechanical jaws adjusted bellow the bearing and again operate the pump. During operation, hydraulic jack applies continuous
pressure on shaft and mechanical jaw remove bearing from shaft.
During pushing operation, two pusher inbuilt in a frame which pushes a bearing clamp. Bearing clamp supports the bearing
while performing pushing operation. The middle portion clamping plate is in elliptical shape and provided with sitting
arrangement and is adjustable range from 50-100 mm. The clamping plate is adjustable by means providing stud on both sides.
Fig. 4: Actual Model of Hydraulic Bearing Puller and Pusher
A. Cad Model:
Fig. 5: CAD Model
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Design and Fabrication of Hydraulic Bearing Puller and Pusher
(IJIRST/ Volume 1 / Issue 11 / 027)
B. Design of Hydraulic Bearing Puller and Pusher:
1) Design Consideration:
 Load capacity of Hydraulic Jack (W) = 5 ton (50 KN)
 Operating Pressure (p) = 80 Kgf
 Lift Range (L) = 20 cm
 Man effort put on handle (e) = 20Kg
 Permissible tensile stress of mild steel (6t) = 120 N/mm2
 No. of stroke for lifting load (n) = 150
 Factor of safety = 5
 Permissible shear stress of mild steel (τ) = 20 N/mm2
 Permissible comp. stress of mild steel (6c) = 20 N/mm2
 Permissible comp. stress of cast iron (6c) = 120 N/mm2
 Permissible shear stress of cast iron (τ) = 35 N/mm2
2) Design of Hydraulic Jack:
The material of hydraulic jack is cast iron and having capacity of 5 ton i.e.50 KN. Material used for handle and jack plate is mild
 Outer diameter of jack (Do) = 60 mm
 Inner diameter of jack (Di) = 30 mm
 Oil capacity in reservoir at bottom of jack = 200 ml
 Handle attached to jack (l*b*t) = ( 280 mm*10 mm*8 mm)
 Plate attached to jack (l*b*t) = ( 150 mm*100 mm*10 mm)
 Central hole on plate for jack = 60 mm
 Vertical stud rod attach to both sides diagonally to the jack plate(l) = 310 mm
 Stud rod through both sides of plate of diameter = 6 mm
3) Design of Bearing Puller and Puller Plate:
The puller used to remove bearing from shaft .and material for both is mild steel.
 Size of bearing puller = 150 mm
 Puller plate dimension (l*b*t) = (135 mm*23 mm*3 mm)
 Upper hole on puller plate ( Du) = 10 mm
 Lower hole on puller plate ( Dl) = 6 mm
4) Design of Shaft and Shaft Clamp:
Material used for shaft is SAE 1030 steel and for shaft clamp is mild steel. During pushing operation of bearing, shaft clamp
plays very important role i.e. to hold the shaft.
 Diameter of shaft ( D) = 50 mm
 Shaft clamp Dimension (l*b*t) = ( 180 mm*80 mm*18 mm)
 Central hole on clamp plate of diameter = 50 mm
 Hole on clamp plate for vertical stud of diameter = 20 mm
 Stud hole on both sides of clamp (adjustable) = 8 mm
5) Design of Bearing Clamp:
Bearing clamp made up of mild steel and having sitting arrangement to bearing when pushing of bearing into shaft. The sitting
arrangement is of in elliptical shape.
 Bearing clamp dimension (l*b*t) = ( 180 mm*90 mm*14 mm)
 Inner elliptical size on shaft = 80 mm
 Outer elliptical size on shaft = 110 mm
 Stud on both side of bearing clamp = 6 mm
6) Design Of Pushing Arrangement:
The material used for pusher is mild steel. Pusher is made like C frame having horizontal stripes on which two vertical strips
welded at the end of horizontal strips . The two horizontal loads welded on vertical strips.
 Horizontal strip dimension ( l*b*t) = ( 180 mm*15 mm*10mm)
 Vertical strips dimension ( l*b*t) = ( 40 mm*15 mm*10mm)
 Horizontal load strips (l*b*t ) = ( 120mm*20mm*15mm)
In order to remove and installed bearing safely, to make modification in traditional method. The modification made in easy
removing and installing bearing. The purposes of modification are Simplicity of operation, removing and installation of bearing
All rights reserved by
Design and Fabrication of Hydraulic Bearing Puller and Pusher
(IJIRST/ Volume 1 / Issue 11 / 027)
done without damaging bearing surface, compact, portable, well suited, low cost, Multifunctional ,safe ,versatile and individual
can lift a load weighing several ton.
The following papers are being studied and are referred for the project. These papers belong to various authors, having various
papers related to the Hydraulic Bearing Puller and Pusher.
Mohammed Abuzaid, Mohammad Hasnain, Shabaj Alam, Sohail Khan, Prof. Surendra Agarwal "INBUILT HYDRAULIC JACK IN AUTOMOBILE
VEHICLES”, International Journal of innovation in Engineering and Technology,Vol.2 Issue 2 April 2013 ISSN:2319-1058, Satyam education and social
welfare society group of institutions,Bhopal, MP (INDIA).
Ahmad Farudzi Bin Azib, Shamsuddin Bin Abdullah,Mohd Sobri Bin Hussain"THE EXTENSION HYDRAULIC WHEELWRENCH"International
Journal of Applied Science and Technology,Vol.4 No.1 January 2014, Mechanical Engineering Department,Polytechnic Kota Bharu, Kelantan, Malaysia.
Olawale J Okegibile, Abdulkadir B.Hassan, Abubakar Mohammad, Emmanues A.Onekater"DESIGN OF IMPROVED HYDRAULIC
ACCUMULATORFOR A TRUCK LOADING LIFT" International Journal of Advanced scientific and research, Issue 4.Vol.2, March- April 2014
ISSN:2249-9954, Department of Mechanical Engineering, Federal University of Technology ,Minna, Nigeria.
Vol.18No.2,April 2013 ISSN:1083-4435.
Franklin L. Quilumba,Student member,IEEE, Lundonk K.Lee,Wei-Jen Lee,Fellow,IEEE ,Alan Harding" IMPROVING HYDRAULIC SYSTEM ENERGY
K.Sainath, Mohd Jibran Baig, Mohd Sulahuddin" DESIGN OF MECHANICAL HYADRAULIC JACK" IOSR Journal of Engineering ISSN (e): 22503021, ISSN (p): 2278-8719 Vol.4, Issue 7 July 20147, Prof. of Mechanical Engineering Department, Sreyas Institutes of Engineering and Technology,
Nagole, Hyderabad.
ResearchVol.2 137-142, College of Automotive Engineering and Science, Shanghai, China.
HYDRAULIC PRESS" IJETAE ISSN:2250-2459:2008 Certified Journal, Volume 3, Issue 8, August 2013,M. Tech Scholar, Assistant professor,
Department of Mechanical Engineering, Sri Jayachamarajendra College of Engineering, Mysor,Karnataka, India.
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