The ball bearing is introduced between the two surfaces which have to rotate over each other. The axle is fixed on the inner side of a ball bearing and wheel is fixed to the outer side of the ball bearing the ball bearing. They reduces friction by making the two surfaces axle and wheel to roll over each other. This happens due to the rolling action of small metal balls present inside the ball bearing. Even a wheel produces some friction where its central hole rubs with the axle.
To reduce friction still further, wheels are mounted on ball bearing. The ball bearing is fixed between the hub of wheel and axle. When the wheel revolves the balls of ball bearing roll and reduce friction. The use of ball bearing makes the wheel roll smoothly over the axle. In most of the machine friction is reduced by using ball bearing. The Wheels of the bicycle turn on sets of ball bearing.
These ball bearings reduce friction because they roll rather than slide. Book a free class. Book a free class Join class now already booked a class? Selina solutions. Book a free class now. Matter 2. Physical Quantities and Measurement 3. Force 4. These factors are: Surface Finish — The number, roughness and even the directional contact points of the asperities on the surfaces can dramatically affect the frictional coefficient.
Surface Interaction It is important to understand how two metal surfaces within a machine interact with each other. Related Articles.
Ten Tips for Proper Bearing Maintenance. Featured Videos. Atten2 S Oil Wear 2. Featured Whitepapers. Does water ingress have to be the end of your oil's life? Neural Network Detection of Machine Faults. Cement Industry Contamination Solutions. Buyer's Guide. This readily reduces the area of the object that the fluid is able to push against and this lowers the force of drag.
This property holds even if they are microscopic holes — as long as the holes are large enough to let some of the fluid pass through the object, the drag will be reduced.
Method 9: Increase the speed of the object. The faster a body moves, the more fluid it has to move through, and, thus, the greater drag it experiences.
Bodies moving at very high speeds will experience very high friction due to drag, so these objects must be streamlined or else they will fall apart under the force of the drag. Methods of Reducing Friction Method 1: Objects that move in fluids such as boats, planes, cars, etc, the shape of their body must be streamlined in order to reduce the friction between the bodies of the objects as the fluid.
Method 2: Friction can be reduced by polishing the surface of a body as polishing makes the surface smooth and eve. Method 3: Lubricants such as oil or grease must be applied to machine parts regularly to reduce the friction between them. Method 4: Suppose an object is rolled over a surface, the friction between the rolled object and surface can be reduced by using ball bearings. Method 5: Friction between two surfaces can also be reduced by reducing the contact between the surfaces.
Method 6: Ball bearings are used in manufacturing vehicles, bicycles, and vehicles to reduce friction. Sample Questions on Friction Question 1: What happens when you decrease the amount of friction? Skip to content. Change Language. Related Articles. Table of Contents. Save Article. Improve Article. Like Article. Last Updated : 03 Mar,
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