What are the advantages of ball bearings?

Ball bearings are generally used in low load mechanical transmissions. Since the bearing area of the ball bearing is small, heavy mechanical damage can easily occur in high-speed operation. Therefore, needle bearings are often used in heavy load mechanical transmission to increase bearing surface area, improve mechanical transmission efficiency and reduce mechanical damage.

What are the advantages of ball bearings?

What to do if the temperature of the ball bearing rises?

What role does the ball bearing play?

What are the advantages of ball bearings?

Advantage

(1) Under general working conditions, the friction coefficient of the ball bearing is low, it does not change with the change of the friction coefficient, and is relatively stable; The starting and running torque is small, the power loss is small, and the efficiency is high.

(2) The ball bearing has low radial clearance and can be eliminated by axial pretensioning, so that the running accuracy is high.

(3) The axial width of the ball bearing is small, and some bearings simultaneously bear radial and axial composite loads with compact structure and simple combination.

(4) The ball bearing is a standardized component with a high degree of standardization and can be manufactured in batches, so the cost is low.

What to do if the temperature of the ball bearing rises?

When the ball bearing is in operation, this results in increased bearing temperature and part expansion due to a combination of internal friction, lubricant movement and other external factors.

(1) Among the ball bearing parameters, the contact angle has a large influence on the variation of the axial clearance.

(2) Under the influence of fixed seat, centrifugal force and heating on bearing clearance, the fixed seat has the greatest influence.

(3) If in practice the ball bearing has a press fit, the influence of the fit fit on the bearing clearance should be taken into account, and a certain clearance should be reserved to avoid excessive preload and premature failure of the bearing. For angular contact ball bearings actually paired, the change in radial air must be converted into the change in axial air for consideration.

What role does the ball bearing play?

The purpose of a ball bearing is to determine the relative position of two parts (usually a shaft and a housing) and ensure their free rotation as the load is transferred between them. At high speeds (in centrifugal ball bearings), this insert can be extended to free rotation with low bearing wear. To achieve this state, the two bearing parts are separated by an adhesive liquid film called elastohydrodynamic lubricating film. Denhard (1966) pointed out that elasticity is maintained not only when the bearing is exposed to load on the shaft, but also when the bearing is pre-stressed so that the positioning accuracy and stability of the shaft 1 microinch or 1 nanoinch hydrodynamically does not exceed lubricating film.

Shandong Xuanye Precision Machinery Co., Ltd. has been focusing on the development and production of ball bearings for several years. And it is committed to providing perfect service to every customer from all over the world.