بلبرینگ چیست و چه وظایفی دارد؟
Ball bearing means bearing balls. This piece is considered a type of bearing or rotating gear or hub and is used in any device that rotates to prevent friction and wear of the rotating surface. For example, the rotation of heavy objects and their movement, such as car wheels, is made possible by bearings. Of course, bearings are used in different parts of the car where friction is possible.
Alternator bearing
Plus bearing
Gearbox bearing
Steering wheel bearing
Idler gear bearing
Wheel bearing
Axle bearing
وظایف بلبرینگ خودرو
۱. کمک به انتقال قدرت بین قطعات
In such a way that the bearing provides the conditions for the rotation of some parts on top of each other and at the same time prevents friction in the transmission of power between these effective parts. is.
۲. جلوگیری از ایجاد اصطکاک
In addition to preventing wear and tear of parts, the bearing also prevents the loss of energy under the influence of heat and friction.
۳. پیشگیری از سایش قطعات و سطوح
With the help of bearings, analytical contacts and corrosion between surfaces are prevented. Therefore, the parts are not damaged due to wear.
اجزای تشکیل دهنده بلبرینگ
Although the bearings themselves are small parts, they are composed of many components that are delicately arranged together and play an important role in automobiles and other industrial machinery. These components are summarized in four main sections, which are:
کنس یا رینگ (Ring)
Each bearing has two inner and outer rings that cover the other components of this piece from two sides. Rims are usually made of resistant steel alloys.
ساچمه یا رول (Rolling Elements)
The roller components of the bearing actually make the movement of the bearing possible with their rotation. Balls are generally made of steel.
قفسه یا کیج (Cage)
The part that contains the bullets and prevents them from contacting each other. At the same time, it prevents the horizontal and lateral movement of the rolls. The shelves are made of fiber, steel or brass.
کاسه نمد
It is placed between the rings and the cage. It may be on both sides of the cage and between the inner and outer rims, or it may be used only between the inner rim and the cage. The function of the bearing felt bowl is to prevent hydraulic oil from escaping inside the cages and between the rolls. This part is considered as a type of insulation against water penetration into the bearing.
طرز کار بلبرینگ
Bearings can withstand both radial and axial loads. This time, it is fried from the outer layer to the rolls and then goes to the inner layer. In this way, the pressure resulting from friction is applied to the outer ring. This force that is transferred to the balls is reduced due to their rotation and is sent to the inner ring in a controlled manner. In fact, the smooth movement of the balls inside the racks, which is made smoother and easier with the help of the hydraulic oil inside the bearing, makes the wheels move more easily and makes the rotation of the rotating parts connected to the bearings easier. In this part, the speed and bearing capacity of the bearing changes. In bearings where roller balls are used, due to the small contact surface and the cross-section of the rolls with the rims, the movement speed increases, but the load bearing capacity decreases. But in bearings where cylindrical or pillow rolls are used, the speed is reduced and the endurance of the bearing is increased. Conical rolls also increase the movement speed on one side and increase the load bearing capacity on the other side of the bearing. They are used in cases where the speed and resistance of the difference on both sides of the wheel parts are needed.