Structural Type and Characteristics of NSK Deep Groove Ball Bearings

NSK single row deep groove ball bearing, the structure shown in the figure below. A representative diagram of a deep groove ball bearing is shown in Figure 1. The dust cover ball bearing and the seal ring ball bearing are sealed with an appropriate amount of high-quality grease. The characteristics of sealed ball bearings are compared, as shown in Table 1. Compared with ordinary bearings, NSKHPS deep groove ball bearings have the characteristics of high load and high speed. Structure dust cover type non-contact rubber seal type rubber seal (ZZ type) (VV type) (DDU type) Small because it is a contact seal, so it is larger than ZZ type and VV type. Good and good because the limit of the contact seal is better than The ZZ type is slightly better than the VV type. (Can also be used in dusty environments) Better than ZZ type (Can also be used in somewhat dusty conditions) Good discomfort and discomfort (Can also be used in splash conditions) Friction torque Grease sealing, high speed, dustproof and waterproof Operating temperature range (1) Note (1) The values u200bu200bin the table above are the standard ranges. The temperature range can be expanded by incorporating cold-resistant and heat-resistant grease and rubber materials for sealing. Please contact NSK on request. NSK deep groove ball bearings generally use stamped cages, and large-size bearings use copper alloy machined cages. (Refer to Table 2, Figure 2) When used for high-speed rotation, a car-made cage is also used. Table 1 Characteristics of sealed ball bearings Open contact rubber seal type (DDU type) with snap ring Non-contact rubber seal type (VV type) Structure type and characteristics The inner ring and outer ring are designed with ball filling ports, which can be filled with more balls than deep groove ball bearings. Because of the ball filling port, it is not suitable for applications with large axial loads. BL2 and BL3 bearings have the same main dimensions as 62 and 63 single row deep groove ball bearings. In addition to the open type, there are also steel plate dust cover ZZ type. In addition, when using a bearing, try to use the ball filling port of the outer ring as a non-load ring as much as possible. The cage is a stamping cage. The inner ring groove of the magneto ball bearing is slightly shallower than that of the deep groove ball bearing. One side of the outer ring is a taper hole, and the outer ring can be separated, so it is easy to install the bearing. A stamped cage is standard, but synthetic resin-cut cages are also used for high-speed rotation. Precautions when using deep groove ball bearings For deep groove ball bearings, if the bearing load is too small during operation, it will cause sliding between the ball and the raceway, which will become the cause of scratches. This is especially true for large deep groove ball bearings with heavy ball and cage weights. It is expected that the load will be too small during use. Please contact NSK when selecting bearings.