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It is always inserted parallel to the axis of the shaft. The sunk keys are of the following types. where d = Diameter of the shaft or diameter of the hole in the hub.. The usual proportions of the gib head key are. The depth of the keyway weakens the shaft.. The saddle keys are of the following two types...
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The standard length of the shafts are 5 m, 6 m and 7 m.. 14.6 14.6. as well as due to the weight of the shaft itself.. When the shaft is subjected to a twisting moment (or torque) only, then the diameter of the shaft may be obtained by using the torsion equation. J = Polar moment of inertia of...
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The ratio of the effort arm to the load arm i.e. mean diameter of the tapered pin, and 2. diameter of the handle.. Mean diameter of the tapered pin. Let d 1 = Mean diameter of the tapered pin, and. d = Diameter of the spindle = 50 mm ...(Given) We know that the torque acting on the spindle,. Diameter...
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Design of Connecting Rod.. 16.1 (c), and 4. The cross-section of the column is uniform throughout its length.. The weight of the column itself is neglected.. where E = Modulus of elasticity or Young’s modulus for the material of the column, A = Area of cross-section,. k = Least radius of gyration of the cross-section, l = Length of the...
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17.3 Let p = Pitch of the screw,. d = Mean diameter of the screw, α = Helix angle,. From the geometry of the Fig. When the *nominal diameter (d o ) and the **core diameter (d c ) of the screw is given, then Mean diameter of screw, d. 17.4 that the effort applied at the circumference of the...
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Slip of the Belt.. Maximum Tension in the Belt.. Initial Tension in the Belt.. The velocity of the belt.. The tension under which the belt is placed on the pulleys.. The arc of contact between the belt and the smaller pulley.. The conditions under which the belt is used.. The V-belt as shown in Fig. This will result in the...
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Cast Iron Pulleys.. Design of Cast Iron Pulleys.. Since the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys, therefore the pulley diameters should be carefully selected in order to have a desired velocity ratio. 19.2 19.2. Cast iron pulleys, 2. 19.3 19.3 Cast Iron Pulleys Cast Iron Pulleys Cast Iron Pulleys Cast Iron Pulleys...
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the width at the neutral axis) of the belt. The operation of the belt and pulley is quiet.. Let R 1 = Normal reactions between belts and sides of the groove.. R = Total reaction in the plane of the groove.. µ = Coefficient of friction between the belt and sides of the groove.. Consider a small portion of the...
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21.1 21.1 Intr Intr Intr Intr Introduction oduction oduction oduction oduction. These wheels have projecting teeth of special profile and fit into the corresponding recesses in the links of the chain as shown in Fig. 21.2 21.2 Advantages and Disadvantages of Chain Drive over Belt or Rope Drive Advantages and Disadvantages of Chain Drive over Belt or Rope Drive Advantages...
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Let m = Mass of the flywheel in. As the speed of the flywheel changes from ω 1 to ω 2 , the maximum fluctuation of energy,. The mass of the flywheel rim is given by. where b = Width of the rim, and. t = Thickness of the rim.. Mass of the flywheel. Let m = Mass of the...
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Solid length of the spring, L S = n'.d. d = Diameter of the wire.. Free length of the spring,. δ = Deflection of the spring.. Pitch of the coil, p = L F – L S d. L F = n.d + (n – 1) and pitch of the coil, p = F. p = Pitch of the coils,...
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The jaws of the clutch may be of square type as shown in Fig. Due to this, the temperature of the contact surfaces will increase and may destroy the clutch.. The clutch should not require any external force to maintain contact of the friction surfaces.. The projecting parts of the clutch should be covered by guard.. ends of the levers...
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The peripheral velocity of the brake drum,. The projected area of the friction surfaces, and. The ability of the brake to dissipate heat equivalent to the energy being absorbed.. When the motion of the body is pure translation. When the motion of the body is pure rotation. d = Diameter of the brake drum,. N = Mean speed of the...
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Note : These bearings may move in either of the directions as shown in Fig. When the angle of contact of the bearing with the journal is 360° as shown in Fig. When the angle of contact of the bearing with the journal is 120°, as shown in Fig. the diameters of the journal and bearing are equal, then the...
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Rolling Contact Bearings. Types of Rolling Contact Bearings.. Types of Radial Ball Bearings.. Thrust Ball Bearings.. Basic Static Load Rating of Rolling Contact Bearings.. Static Equivalent Load for Rolling Contact Bearings.. Life of a Bearing.. Basic Dynamic Load Rating of Rolling Contact Bearings.. Dynamic Equivalent Load for Rolling Contact Bearings.. Dynamic Load Rating for Rolling Contact Bearings under Variable Loads.....
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According to the position of axes of the shafts. These gears have teeth parallel to the axis of the wheel as shown in Fig. According to the peripheral velocity of the gears. The gears, according to the peripheral velocity of the gears, may be classified as. It is the diameter of the pitch circle. The size of the gear is...
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Helical Gears. Terms used in Helical Gears.. Face Width of Helical Gears.. Formative or Equivalent Number of Teeth for Helical Gears.. Proportions for Helical Gears.. Strength of Helical Gears.. A helical gear has teeth in form of helix around the gear. This provides gradual engagement and continuous contact of the engaging teeth. Helical gear (nomenclature).. Note : If the gears...
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Bevel Gears. Classification of Bevel Gears.. Terms used in Bevel Gears.. Determination of Pitch Angle for Bevel Gears.. Proportions for Bevel Gears.. Strength of Bevel Gears.. Design of a Shaft for Bevel Gears.. The elements of the cones, as shown in Fig. 30.1 (a), intersect at the point of intersection of the axis of rotation. 30.1 (b), the elements of...
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The threads of the worm may be left handed or right handed and single or multiple threads.. The worm and worm gear in mesh is shown in Fig. It is the angle between the tangent to the thread helix on the pitch cylinder and the plane normal to the axis of the worm. tan λ = Lead of the worm...
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Thickness of the cylinder wall. Bore and length of the cylinder. bore and length of the cylinder . thickness of the cylinder head . Let D = Bore of the cylinder in mm,. Thickness of the cylinder head. p = 9 p m N/mm 2 We know that thickness of the cyclinder head,. d c = Core diameter of the...