Q: What is the reason for the poor rotation of the deep groove ball bearing after it is installed in the equipment?

A: The deep groove ball bearing is an inseparable bearing composed of solid inner and outer rings, a cage and steel balls, and is widely used. The product has a simple structure, is reliable, durable and easy to maintain. There are multiple structural designs such as single row, double row, open and sealed. Due to the use of standardized processing technology, the outer ring of the open bearing has a groove for installing a seal ring or a dust cover. Deep groove ball bearings can withstand radial loads and bidirectional axial loads, and have low friction torque. Suitable for high-speed and ultra-high-speed occasions. There are three common structures of sealed deep groove ball bearings. Products with RZ or 2RZ after the bearing model are sealed products with metal dust covers on one or both sides. They are gap seals, mainly used for dust prevention and suitable for high speeds. Products with RZ or -2RZ after the model are skeleton rubber seals on one or both sides, but they are non-contact seals, mainly used for sealing and dust prevention, and suitable for high-speed occasions. Products with -RS or -2RS after the model number have skeleton rubber seals on one or both sides, but they are contact seals, mainly used in strict sealing and dustproof occasions. Since the seal lip of the contact seal product is in contact with the inner and outer diameters of the bearing, the friction resistance during operation will be larger, so it should be selected after verification for starting torque requirements or high-speed operation.

Products with RS or 2RS suffixes in the bearing model number have lower noise during use, and the sealing and dustproof effects will be enhanced. In general medium and low speed applications, they can be used interchangeably with non-contact seal products. Deep groove ball bearings with contact seals may feel laborious and not very smooth when running during the commissioning of the equipment due to the influence of grease filling and friction, and the temperature will increase rapidly during the initial operation. However, after a few hours of normal operation, it will generally drop to a suitable temperature.