Avoid set-contained spherical bearing corrosion remaining secrets

Insert ball bearing unit by using environment is different, so the performance of the corrosion are also different, due to corrosion in a different way. Shaft but also escape not to drop the corroded fate, below is for the three ways of bearing corrosion. 1, cavitation set-contained spherical bearing of cavitation is contact with the liquid and solid appearance appearance damage produced during the relative motion. Smooth when the oil in the oil film of low pressure area, oil will constitute a bubble, bubble movement to high, the pressure under the action of air bubble breaking, the breaking instantly produced great impact and high temperature, the solid surface under the effect of the impact of repetition, information attack tired is shattered and the friction is small pits, and then carry out into a cavernous scars. Overload, high speed, and the sliding bearing with higher load and speed, often attack cavitation; Insert ball bearing unit 2, fluid corrosion fluid corrosion is refers to the fluid impact solid appearance will violently formation fluid corrosion, solid appearance brings dot scars, this kind of damage the appearance of the lubrication; 3, electric corrosion bearing electric corrosion is due to the motor or electric leakage, edm in insert spherical bearing friction between appearance, on the friction surface dotted scar formation, its characteristics is damage reciprocating rendering on a hard shaft neck appearance. To predict set-contained spherical bearing fatigue life and residual life, we have to understand all of the bearing fatigue damage phenomenon, for this will spend a long time. However, due to rolling fatigue is the onset of fatigue under compressive stress at the points of contact, to reach the damage it will attack great data changes. Therefore, besides appearance shows early crack, suffering from chemical conditions that result in the change of prior information, the propagation of the crack, change detection data can distinguish bearing fatigue degree. Scrape off the bearing and shaft neck and the lumen of the smooth old fat, clean with cleaner bearing and shaft neck and dried with a cloth, cloth rub-up lumen in the end. Check the bearing and the bearing race, found a crack, fatigue spalling and bearing roller lax wait for a phenomenon, should be a change in the bearing. If found a pit on the bearing race, also should change the bearing. Check insert ball bearing inside diameter and journal cooperation condition, fit clearance should not be greater than zero. 10 mm measurement journal, in the vertical fluctuation two parts of the air, The place for the biggest wear parts) Measurement. If the use of fit clearance beyond rules limit, should change bearing, restore normal fit clearance. Don't allow on the shaft neck burr, pitting to reduce the gap. After being all parts fit request, put among the smooth bearing daub grease inside. Will insert ball bearing inner cavity daub smooth fat should pay attention to when, should be smooth fat crowded into the bearing until smooth and fat from the other side of the bearing. Within the lumen and shaft epicranium apply a thin layer of smooth, have the effect of rust. Of cavity smooth fat don't apply too much, otherwise it will affect the heat dissipation and brake. Will return to the journal and bearing is installed outside, adjust the shaft head nut screw on with the hand, and then use according to the rules of the torsion shaft head wrench and tighten the adjusting nut. Tighten nut, should turn right or left laps, look at the bearing assembly condition; On the other hand, after turn the bearing and the seat right to cooperate. Bearing tightness, appropriate at this time the wheel at home and don't feel the axial clearance. The last device in turn lock plate, a fixed nut, tire, dust cover, and decorative cover, etc. Insert ball bearing adjustment, a mileage traveled ( Around 10 km) Parking, check for dry touch of temperature, if fever, adjust the tight, for bearing should be readjusted, appropriate release bearing tightness.