What is deep groove ball bearing
Deep groove ball bearing, formerly known as single-row centripetal ball bearing, is the most widely used rolling bearing. It is characterized by small friction resistance, high speed, can be used to bear radial load or radial and axial combined load at the same time on the machinery, can also be used to bear axial load on the machinery, such as small power motors, automobile and tractor gearboxes, machine tool gearboxes, general machinery, tools and so on.
Characteristics of deep groove ball bearing
Deep groove ball bearings are the most commonly used rolling bearings. Its structure is simple and easy to use. Mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has the performance of a certain angular contact ball bearing, and can bear radial and axial combined load. When the speed is high and the thrust ball bearing is not suitable, it can also be used to bear pure axial load. Compared with other types of bearings with the same specification and size as deep groove ball bearings, this kind of bearings has small friction coefficient and high limit speed. But not impact resistance, not suitable for heavy load.
Application of deep groove ball bearing
Deep groove ball bearings can be used in gearboxes, instruments and meters, motors, household appliances, internal combustion engines, traffic vehicles, agricultural machinery, construction machinery, engineering machinery, roller type roller skates, yo-yo, etc.
Basic protective measures to ensure the accuracy of double row deep groove ball bearing
Bearings should be cleaned with gasoline or kerosene before installation, and used after drying to ensure good lubrication. Double row deep groove ball bearings are generally lubricated by grease or oil. When using grease lubrication, should be selected without impurities, oxidation resistance, rust prevention, extreme pressure and other functions of superior grease. The amount of grease filling is 30%-60% of the bearing and bearing box volume, and should not be too much. Double row deep groove ball bearings with sealed structure have been filled with grease, users can use directly, can not be cleaned.
When the bearing is installed, the bearing must apply equal pressure on the circumference of the end face of the ring and press the ring into it In the case of a small amount of interference, the end face of the bearing ring can be pressed by the sleeve at room temperature, and the sleeve can be knocked with a head to balance the ring through the sleeve If mass installation, can use hydraulic machine. When pressed in, we should ensure that the end face of the outer ring and the shoulder face of the shell, the end face of the inner ring and the shoulder face of the shaft table are pressed tightly, and no clearance is allowed.
1. Measure the size of the shaft and the bearing seat hole to determine the matching accuracy of the bearing. The matching requirements are as follows: interference fit is adopted between the inner ring and the shaft, and the amount of interference is 0 ~ +4μm(0 in light load and high precision).The outer ring and the bearing seat hole take clearance match, clearance amount is 0 ~ +6μm (but in the free end of the bearing using angular contact ball bearing, can also increase the clearance).The roundness error of the surface of the shaft and the seat hole is less than 2μm, the parallelism of the end face of the spacer for double row deep groove ball bearing is less than 2μm, and the runout of the inner end face of the shaft shoulder is less than 2μm. Bearing seat hole shoulder on the axis of the jump in 4μm below. The runout of the inner end of the spindle front cover facing the axis is less than 4μm.
2. The fixed end before the installation of the bearings on the shaft, double row deep groove ball bearings with the kerosene used to clean the clean thoroughly clean, for grease lubrication, to contain 3% ~ 5% of organic solvent injection bearing grease for degreasing, cleaning and quantitative grease oil gun will fill in the bearing inner (10% ~ 15%) of the bearing space volume. Heating the bearing makes the temperature rise 20 ~ 30℃, and loading the bearing into the shaft end with a hydraulic press. The setting sleeve is pressed on the shaft and the bearing end face is positioned in the axial direction with the appropriate pressure.The belt of the spring balance is rolled on the outer ring of the bearing, and the method of measuring the starting moment is used to verify whether there is a significant change in the specified preload (even if the double-row deep groove ball bearing is correct, the preload may also change due to the deformation of the fit or cage).
The price of deep groove ball bearing
The price of deep groove ball bearing is affected by many factors such as market, material and quotation. If you want to know the specific price of deep groove ball bearing，please contact us to make enquiries.
Supplier of deep groove ball bearing:BMB Bearings
BMB Bearings is the complete one-stop supplier of OEMs and wholesalers purchasing high-precision, miniature ball bearings, industrial ball bearing related products, as well as related professional services, including world-class engineering and design. If you have any need, please feel free to contact us .