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Skf imported bearings timing check rule conditions

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Regular maintenance of mechanical equipment; is very important for ensuring production. As a fine fitting of mechanical equipment; the timing view of Skf imported bearings is particularly important. Today we will analyze the necessity and key steps of bearing timing inspection.
It is very important to insist on the bearing and smooth and clean. Before the inspection, the external appearance of the machine should be taken; then the parts around the Skf bearing are removed. The oil seal is a very weak part; therefore, be careful to disassemble; do not apply excessive force; then carefully View the oil seal and its surrounding parts; if it has shown poor performance; it is necessary to replace it; a bad oil seal will cause damage to the bearing and strict equipment stop.
Look at the smoothing agent of the bearing and apply a little smoothing agent to conflict between the two fingers; if there are contaminants, feel it; or apply a smoothing agent on the back of the hand; then seal the light.
Replace the smoothing agent of the bearing oil. The smooth bearing is after the old oil is drained; if possible, refill the fresh oil and let the machine rotate at low speed for a few minutes. Try to get the oil to collect the residual contaminants; then diarrhea These oils; the oil is best filtered first before use.
The grease smoother bearing used in the replacement of grease should prevent the cotton material from joining the joint to any part of the bearing; because these residual fibers can be wedged between the rolling elements and form damage; especially It is the use of small bearings that need to pay attention to this problem.
Cover the exposed bearings to see the bearings; do not let the Skf bearings be exposed to contaminants or moisture. If the operation is stopped; the machine should be covered with oil-paper plastic sheets or similar materials.
If the unshielded bearing is removed without being disassembled and can be viewed; remove it with a white spirit by applying a brush; then dry it with a lint-free cloth or blow it with compressed air. Dry (pay attention not to let the bearing assembly start to rotate).
(1) The temperature condition when measuring the temperature is 20 °C; the temperature of the bearing, the gauge block, the gauge and the measuring instrument are the same; the above method of placing them on the same metal plate can be the most Complete the necessary temperature balance quickly; otherwise it takes several hours or even a few days to reach this balance.
In order to get the correct measurement results; foreign relying on the mechanization of measurement to prevent human hands from touching these objects; or wearing insulated gloves for operation.
(2) The rules of the measurement area are measured on the inner or outer diameter of the imported bearings of Skf; the domestic rules are measured within the area where the south end of the ferrule is the largest chamfering coordinate; and the foreign rules are on both ends of the ferrule. Measured within the area of ​​twice the chamfering coordinates.
(3) The rule of the scale benchmark is to measure the common scale of the bearing scale in the comparison measurement method; the ruled gauge block or the gauge part is used as the scale benchmark for the comparison measurement; the gauge block needs to conform to the rules of the standard JB/T1078 “quantity block”. It is necessary for the specification to conform to the rules of the competent authority of the manufacturer.
(4) The appearance of the measurement of the external appearance is necessary to pass the calibration; and it has the accuracy and amplification ratio suitable for the bearing to be tested.
(5) The allowable measurement error can in principle allow the measurement error to be less than 10% of the public service.
(6) The radius of the probe and the pressure of the gauge to reduce the measurement error; it is necessary to be within the range of energy; strive to reduce the pressure of the gauge - measure the force; and increase the radius of curvature of the probe.
When measuring the inner and outer diameter of the bearing; the measuring force and the radius of curvature of the probe can be selected.
(7) When measuring the mandrel used in the measurement of Kia, Kea and Sd of the bearing; about the cylindrical hole bearing; the taper of the taper mandrel used in principle is 1/5000-1/10000; about the tapered hole uranium bearing; The fundamental taper rule for the taper mandrel used is 1/12.
(8) Rules for measuring load When measuring Kia, Kea and Sia, Sea, etc.; the necessary measurement load should be applied; the rolling body and the ferrule should be in the normal touch position; to obtain a stable measurement value.
(9) The rule for measuring the reference plane is about the imported bearings of Skf; the non-printing end face of the ferrule is taken as the reference surface when measuring; about the angular touch ball bearing and the tapered roller bearing; the end face receiving the thrust load is taken as the reference surface.

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Application scope: mostly used for the connection of smaller parts.
It has pan head Screws, countersunk head screws, half countersunk head screws and large flat head screws. Pan head screws and large flat head screws are used in the occasion where the nail head is allowed to be exposed;
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