How to maintain spring loaded roller bearing?

  The internal structure of cylindrical spring loaded roller bearing adopt parallel arrangement of rollers, with spacers or isolation blocks installed between the rollers to prevent tilting or friction between the rollers, effectively preventing an increase in rotational torque. The friction between the rolling element and the sleeve edge is small, suitable for high-speed rotation. According to the presence or absence of retaining edges in the ring, there are single row cylindrical spring loaded roller bearing such as NU, NJ, NUP, N, NF, as well as double row cylindrical roller bearings such as NNU and NN. This bearing is a separable structure with inner and outer rings.
Cylindrical spring loaded roller bearing with inner or outer rings without retaining edges, whose inner and outer rings can move relative to each other in the axial direction, can be used as free end bearings. A cylindrical roller bearing with double flanges on one side of the inner and outer rings and a single flange on the other side of the ring can withstand a certain degree of axial load in one direction. Generally, steel plate stamping retaining frames or copper alloy solid retaining frames are used. But there are also some that use polyamide formed retaining frames.

Maintenance and upkeep of cylindrical spring loaded roller bearing
disassemble of spring loaded roller bearing
Disassembly should also be carried out with the same care as installation. Be careful not to damage the various parts of the bearing, especially the disassembly of interference fit bearings, which is difficult to operate.
It is also very important to design and manufacture disassembly tools as needed.
The disassembly of the outer ring with interference fit requires setting several outer ring compression screws on the circumference of the shell in advance, tightening the screws evenly while disassembling. These screw holes are usually covered with blind plugs, tapered roller bearings, and other separable bearings. Several cuts are made on the shoulder of the housing cover, and they can be disassembled using pads, a press, or gently tapped.
The disassembly of the inner ring can be easily done by pulling it out with a press. At this point, it is important to ensure that the inner ring bears its pulling force. It is necessary to consider the size of the shaft shoulder or study the machining of grooves at the shoulder for the use of drawing fixtures.
The inner ring of large bearings is disassembled using hydraulic pressure method. By setting oil pressure in the oil hole of the bearing, it is easy to pull out. Bearings with a large width can be disassembled using both hydraulic pressure and drawing tools.
The inner ring of cylindrical roller bearings can be disassembled using induction heating method. The method of heating the local area in a short period of time to expand the inner ring and then pulling it out.

clean of spring loaded roller bearing
When disassembling the bearing for inspection, first use photography or other methods to make a good appearance record.
a、The cleaning of bearings is divided into coarse cleaning and fine cleaning
b、During rough cleaning, use a brush or other tool to remove lubricating grease or adhesive from the oil.
c、When performing precision cleaning, slowly rotate the bearing in oil, and it must be done carefully.
The commonly used cleaning agents are neutral, water free diesel or kerosene, and sometimes warm alkaline solutions are also used as needed. After cleaning, immediately apply rust proof oil or grease to the bearings.

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