Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Problems for Practice: Friction in Machine Elements - Theory of Machines
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Review Questions: Friction in Machine Elements - Theory of Machines
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Force of friction always acts in the direction opposite to the direction of motion.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Consider a truncated conical pivot bearing as shown in Fig.6.22.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
If the axial load on the bearing is too high, then the bearing pressure on the collar will become more than the limiting bearing pressure.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Consider a flat collar (also known as thrust collar) bearing supporting a shaft as shown in Fig.6.20.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Consider a conical pivot shown in Fig.6.19.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Consider a flat pivot (also known as foot step bearing) shown in Fig.6.18.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Force acting along the axis of a shaft is known as thrust.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
Consider a journal bearing (which forms a turning pair) is shown in Fig.6.15(a), in which stationary part is known as bearing and rotating part is known as journal or shaft.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
In V-threads (or ACME or trapezoidal threads), the axial load W does not act perpendicular to the surface of the threads, as shown in Fig.6.14.
Friction in Machine Elements - Theory of Machines
Subject and UNIT: Theory of Machines: Unit III: Friction in Machine Elements
The screw jack is a device used for lifting heavy loads by applying a comparatively smaller effort at its handle.