Deep groove ball bearing type 1, deep groove ball bearing with dust cover

Standard deep groove ball bearings with dust cover are available in Z type and 2Z type (NSK is called ZZ type). Generally, it is used in the condition that it is difficult to separately lubricate, it is inconvenient to set up the lubricating oil circuit and check the lubrication. Generally, the dual-purpose lithium-based grease injected into the bearing is 1/4 ~ 1/3 of the internal space of the bearing

Deep groove ball bearing type 2, deep groove ball bearing with seal

Standard deep groove ball bearings with seals are contact seal bearings RS (NSK calls DDU, one-sided seal) and 2RS (two-sided seals) and non-contact sealed bearings RZ (NSK calls VV, one seal) ) And 2RZ type. Its performance, grease filling, and use are basically the same as those with dust cover bearings, except that there is a large gap between the dust cover and the inner ring, and the gap between the sealing lip and the inner ring of the non-contact seal is small. There is no gap between the sealing lip and the inner ring of the seal ring bearing, and the sealing effect is good, but the friction coefficient has increased.

Deep groove ball bearing type 3, deep groove ball bearing with retaining groove and retaining ring

The standard post code for deep groove ball bearings with stop groove is N, and the post code for deep groove ball bearings with stop groove and stop ring is HR. In addition, there are structural variations such as ZN and ZNR. In addition to the function of retaining the deep groove ball bearing with a retaining ring, the retaining ring can also limit the axial displacement of the bearing, simplify the structure of the bearing seat and reduce the size of the bearing. Generally, it is used for working parts with small axial load, such as cars and tractors.

Deep groove ball bearing type 4, deep groove ball bearing with ball gap

Standard ball grooved deep groove ball bearings have two diameter series of 200 and 300. There are gaps on the inner and outer rings on one side, so more balls can be loaded from it, increasing its radial load capacity. However, due to the small axial load capacity, it cannot run at high speed. If there is a large axial load, it needs to be used in conjunction with general deep groove ball bearings.

Deep groove ball bearing type 5, double row deep groove ball bearing

Standard double-row deep groove ball bearings are 4200A and 4300A. A-type bearings have no ball gaps.

Deep groove ball bearing type 6, single row deep groove ball bearing

Single-row deep groove ball bearings with low friction torque are suitable for high-speed rotation, low noise and low vibration. In addition to the open type, there are bearings with steel dust cover, rubber ring bearings, and steel stamped cage.