SKF bearings are a kind of central nervous system in dull operation. They work day and night, and keep advancing, like the legendary perpetual motion machine. Perpetual motion machines do not exist at all. A thing always has its life cycle and its own life span. This is a fact that we have to accept, we can only do everything possible to increase its lifespan. In order to ensure the dynamic balance of the transmission SKF bearing, the solder lugs should be balanced for de-soldering every time. The new drive shaft assembly is provided as a complete set. The device mark of the telescopic sleeve should be too thin when the new drive shaft is installed, and the flange fork should be guaranteed to be in a plane. When repairing and disassembling the drive shaft, the device logo should be printed on the telescopic sleeve and the flange shaft, so that the original device should be firmly connected when reinstalling.
1. Cleaning of SKF bearings
When disassembling the SKF bearing for maintenance, first record the appearance of the SKF bearing, confirm the remaining amount of lubricant, and after sampling the lubricant for inspection, wash the bearing. As a cleaning agent, gasoline and kerosene are commonly used.
The cleaning of the removed SKF bearings is divided into rough cleaning and fine cleaning, respectively, in the container, first put a metal mesh bottom, so that the SKF bearing does not directly contact the dirt of the container. During rough cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the SKF bearing, so care should be taken. In the rough cleaning oil, use a brush to remove grease and adhesions. After it is roughly clean, switch to fine cleaning.
Fine washing is to clean the SKF bearing carefully while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.
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2. Overhaul of SKF bearings
In order to judge whether the disassembled SKF bearing can be used again, it is necessary to check after the SKF bearing is cleaned. Carefully check the state of the raceway surface, the rolling surface, the mating surface, the wear of the cage, the increase in the bearing clearance and whether there is any concern Damage or abnormality due to reduced dimensional accuracy. For non-separable small ball SKF bearings, use one hand to support the inner ring horizontally, and rotate the outer ring to confirm whether it is smooth.
Separate SKF bearings such as tapered roller bearings can separately inspect the rolling elements and raceway surfaces of the outer ring.
Because large SKF bearings cannot be rotated by hand, pay attention to checking the appearance of rolling elements, raceways, cages, and rib surfaces. The higher the importance of SKF bearings, the more careful inspection is required.
3. Judgment criteria for whether SKF bearings are damaged
The judgment of whether it can be reused is determined by considering the degree of damage of SKF bearings, mechanical properties, importance, operating conditions, and the period until the next maintenance. However, if there are the following defects, they can no longer be used and must be replaced with new bearings:
(a) There are cracks or nicks on any of the inner ring, outer ring, rolling element, and cage;
(b) There is a fracture on any one of the ring or rolling element;
(c) There are significant jams on the raceway surface, ribs and rolling elements;
(d) The cage is significantly worn, or the rivet is significantly loosened;
(e) There is rust or injury on the raceway surface and rolling elements;
(f) There are serious indentations and marks on the raceway surface and rolling elements;
(g) There is obvious creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring;
(h) Discoloration caused by heat is obvious;
(i) SKF bearings filled with grease have obvious damage to the sealing ring or dust cover.
The bearings sold by Eric Bearings Limited are of excellent quality, and the price is much cheaper than other distributors. The products are exported to more than 100 countries and regions in the world, winning wide acclaim from customers and establishing long-term cooperative relations with them. In order to expand the scope of business, we also hope to establish trade relations with more customers and develop together.