Analysis of the tightness of roller bearings

1. According to different working environments, choose different imported bearings and imported bearings of different sizes, which will occupy different sizes of space. Therefore, the resulting sealing properties are also different.

2. The additional sealing has the advantage of supporting the structure of the imported bearing, which can allow the angular deviation of the imported bearing in the torsion.

3. Imported bearings with additional sealing properties have relatively stable performance, but the cost of manufacturing is relatively high, so the price of imported bearings will be more expensive.

The installation and maintenance of roller bearings are divided into several steps;

1) Wash the bearing with kerosene, press it into the bearing seat, fill the rollers of the outer ring of the bearing with Shell No. 3 lithium base grease to two-thirds full, apply it evenly with a clean hand, install the ntn bearing gland, and use The tightening bolt of the bolt anti-loosening glue presses the bearing gland;

2) The bearing is a cylindrical roller bearing with a separable inner and outer sleeve, and the inner sleeve of the bearing should be sleeved on the shaft and in place;

3) Install the bearing seat on the housing, if there is a grease injection hole, align the position. Tighten the bearing seat with fastening bolts coated with bolt anti-loosening glue;

4) Install the inner and outer eccentric block on the shaft and place it in place. If there is a shaft key, install the shaft key in the keyway and then install the outer eccentric block, and install the shaft retaining ring on the shaft;

5) Tighten the fastening bolts of the eccentric block, turn the adjustable eccentric block to the angular position before removal and tighten the fastening bolts. After the above assembly is realized, the shaft should have a certain axial series movement;

6) The protective covers at both ends of the upper vibration motor are fastened with screws.

Roller bearing maintenance: thin oil lubrication: the advantage is that the internal conflict coefficient is small, so there is less cost to overcome conflicts, the thin oil has good mobility, and it is easy to enter the conflict surface of each lubrication point. It has a good cooling effect and can reduce the stickiness. Impurities attached to the conflicting surface and metal particles generated by grinding are carried away. The disadvantage is that the oil film cannot withstand high unit pressure and has high requirements for sealing. High-speed presses generally use large-flow thin oil lubrication, which can take away the heat generated by the conflicting pairs.