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esign of Device
. 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 steel.
- 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 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
