1.1 Speed Matching: Deep groove ball bearings have a maximum operating speed. Operating at a speed higher than this can cause the bearings to overheat, accelerate wear, and even fail. When selecting, it is necessary to consider the actual operating speed of the equipment and refer to the speed parameters in the bearing samples. For example, in the case of high-speed motors, a model with a larger designed speed margin and a suitable bearing material for high-speed operation (such as phenolic resin bearings, which can reduce centrifugal force and friction during high-speed rotation) should be selected.
1.2 Radial Load Matching: Different specifications of deep groove ball bearings have different radial load-bearing capacities. Excessive load beyond the rated load of the bearing will shorten its lifespan and cause deformation. When selecting, it is necessary to calculate the radial load during equipment operation. If the load fluctuates, the impact of shock loads should also be considered, and a certain load margin should be reserved. For example, in the drive device of a conveyor belt, the bearing should be selected based on the weight of the conveyor belt and the running resistance, to ensure a load that is compatible with the bearing.
1.3 Clearance Selection: Clearance refers to the gap between the inner and outer rings of the bearing and the rolling elements. It is divided into radial clearance and axial clearance. Appropriate clearance is crucial for the operation of the bearing. For example, in motor applications, a smaller clearance is often selected to improve rotor operation accuracy and reduce vibration and noise; in environments with significant temperature variations (such as outdoor equipment), the impact of thermal expansion should be considered, and a slightly larger clearance should be selected to avoid the bearing getting stuck due to thermal expansion. Based on the equipment conditions (such as precision requirements, temperature environment, etc.), the bearing manufacturer’s provided clearance groups (such as basic group, small clearance group, and large clearance group) can be selected.