INA Bearing contact fatigue failure refers to the work surface by alternating the role of stress arising from failure. Contact fatigue spalling occurred in the forklift bearing surface, often accompanied by fatigue crack, starting with the contact surface the following maximum alternating shear stress generated at, and then extended to the formation of different surface flaking shapes, such as point-like pitting or pitting as spalling , peeling said sheet into small shallow peeling. Since the gradual expansion of the surface spalling, and often extended to the deep, forming deep peeling. Deep contact fatigue spalling is the source of fatigue failure.

     Wear failure refers to the relative sliding between the surface of the working surface due to friction wear and tear resulting metal continuously fail. Continuous wear INA bearing parts will cause gradual damage and eventually lead to the loss of dimensional accuracy forklift bearings and other related issues. Wear may affect the change in shape, with the gap increasing and working surface morphology changes that may affect the lubricant, or it reaches a certain level of pollution caused by lubrication complete loss of function, thereby bearing the loss of rotational accuracy and even can not operate normally.

     1, when the bearing run to a certain time period (or warranty maintenance support period), all the bearings removed;

     2, with clean diesel fuel or kerosene soaked with cleaning bearings, if the technical conditions for the best open closures cleaning;

     3, after cleaning the air dry cleaning oil, visual inspection for damage;

     4, with a 150mm or so, INA Bearing inside diameter equal to the diameter of the stick (preferably hollow tube), one end fixed to a bearing;

     5 hand fast rotating bearing, while the stick (woodwind) on the other side of the top of the ear or debate on the microphone to listen to the audio amplifier bearing rotation noise;

     6, after the fixed bearing horizontal toggle stick, check the bearing is worn loose;

     7, loose serious, turn the noise is too large, there is a serious defect forklift bearings should be eliminated and replaced with the same model;

     8, take a bucket of the amount of grease (high-quality dry butter) with gentle heat to melt (non-     thermal), will detect over-bearing into the bucket to soak no bubbles overflow.

     Cool before removing the bearing grease, grease residue less. INA Bearing grease removed after cooling, the residual grease quantity. Needed to determine the amount of residual grease.

     9, wipe with a soft cloth or tissue paper bearing grease to the outside of the truck bearing fitted to the pulley An undisturbed, maintenance work is completed.