Other factors are more important than the limiting speed

Swing back and forth. In these cases, in order to obtain a boundary lubrication film that can withstand the load, lubricants containing effective extreme pressure (EP) additives should be used. . In some special cases, such as some cylindrical roller bearings, if other cages are selected, the bearings can be operated at a speed higher than the standard limit speed listed in the table. In some applications, other factors are more important than the limiting speed. Note: Depending on the type and brand of lubricant.

Therefore, at high speeds, bearings with smaller outer diameters in the same diameter series should be selected. In the case of very low speed, it is difficult to form an elastic-hydraulic lubricating film on the contact surface between the rolling element and the raceway.25) The lower limit speed. Under the condition of the same inner diameter, the smaller the outer diameter, the smaller the rolling elements, and the smaller the centrifugal inertia force of the rolling elements on the outer raceway during operation, so it is suitable for working at higher speeds. Hybrid ceramic bearings can run well under conditions of insufficient lubrication, so they have good performance in applications where there are rapid acceleration, deceleration and load reversal (change in direction).

If you want to modify the bearing, lubrication system or application. Because the maximum speed that can be achieved does not depend on the thermal balance, but on the inertial force acting on the bearing. Analyze the material and form of the cage (for high-speed rotation, copper alloy or phenolic resin should be used to cut the cage, and there are also synthetic resin molded cages suitable for high-speed rotation); Thrust ball bearings have a low limit speed and can only be used for lower speed occasions. The allowable acceleration and deceleration depend on the quality of the rolling elements and cages, the type and amount of lubricant used, working clearance and bearing load.

Generally, deep groove ball bearings, angular contact Clutch Release Bearings manufacturers, and cylindrical roller bearings should be selected for higher-speed working occasions; for lower-speed working occasions, tapered roller bearings can be selected. The limit speeds listed in the product list apply to basic bearing designs. Ball bearings have higher limit speed and rotation accuracy than roller bearings, so ball bearings should be preferred at high speeds. Normally, in the reciprocating oscillation condition, it is impossible to give a specific rated speed or modern speed. Therefore, if the bearing speed exceeds 80% of the limit speed recorded in the dimension table, please contact the bearing manufacturer. In these applications, lubricants or solid oils containing extreme pressure (EP) additives should be considered.

Some lubricants may have some good properties but are not suitable for high-speed rotation. Because the speed of the bearing is zero at the moment of reverse rotation, it is impossible to maintain a complete hydraulic lubricating film. Solid cages allow higher speeds than stamped cages, and bronze solid cages allow higher speeds. Limiting speed of bearing: The limit speed of the bearing refers to the limit value of the speed at which friction and heating will not cause burns and can rotate continuously. Under these conditions, appropriate measurements may be required (whether cages, seals, preloads and lubricants can withstand high temperatures).