India Jen advanced grease wholesale

India advanced grease wholesale Jen - Jen Senior grease wholesale printing 1, the amount of grease filling in the bearing is the number for the appropriate amount of grease filling a large impact on consumption bearing operation and grease?. Bearing in excess grease filling make the bearing friction torque increases, causing the bearing temperature is too high and lead to grease leakage, conversely, lack of filling amount or too little may occur dry friction bearings and bearing damage. "Indian benevolence grease wholesale" to fill excess fat will result in excess grease leakage from the lubrication unit, to adversely affect the mechanical operation suitable amount of grease filling many different experiences have calculated formula. "Indian benevolence grease wholesale" Generally speaking, for sealed bearings, bearing filling amount of grease to the interior cavity of 1 / 3-2 / 3 is appropriate. When the bearing grease fill temperature. "Indian benevolence grease wholesale" 2, the grease in use Why supplement and replace, with or without provisions? Greases in use will occur oxidative deterioration, reducing the base oil, sometimes mixed with the outside world due to impurities worsen and loss of lubrication, or gradually consumed during operation. Therefore, we must regularly add and replace grease to meet the lubrication requirements components. Bearing re-lubrication cycles depending on the bearing size, relative speed, load, operating temperature and sealing effect of different factors such as bearings, each bearing factories mostly in the dn value criterion. "Indian benevolence grease wholesale" 3, which will change the quality of the grease in use? How to determine? Grease in part due to the work (such as air, water, dust or other harmful gases, etc.) in the external environment, and the role of the working parts relative motion produce mechanical force (such as punching, shearing, etc.), it will change two aspects: (1) chemical changes: Grease components (base oil, thickener) due to light, heat and air role , oxidative deterioration may occur, generating trace organic acids, aldehydes, ketones and lactones and other components of the base oil after subjected to oxidation, thickening agent in the fatty acid, metal salts of organic decomposition may occur to form trace amounts of organic acids, etc., and therefore produce acids (acid value increases grease) lubricated components lead to corrosion, rust up and lost lubrication, protection. "Indian benevolence grease wholesale" (2) physical changes: due to the mechanical action of the grease structure and even worse damage, grease consistency decline, worsen the lubricating effect, or because of mechanical seals lubricated components poor condition, resulting in grease mixed with dust, impurities and moisture leaving the grease quality deteriorates. Identification methods:. A grease with the naked eye or feel there is dust, mechanical impurities, or because of grease emulsification and white mixed with water, shallow, or consistency significantly smaller, or have significant oil rancid odor, etc., can Description grease deterioration. "Indian benevolence grease wholesale" b. Using instrumental analysis methods, the most direct discrimination is to take a small amount of sample used an infrared spectrometer sample Have 1720cm-1 absorption peak. Or assay samples before and after absorption of carbonyl index variation 1710cm-1 and 1378cm-1 ratio of the two absorption peaks of. Or direct determination of the acid value of the sample, if the acid value is greater than 1.0mgKOH / g table clear grease has begun to deteriorate. 4, the grease in the reservoir should pay attention to what matters? Grease is a colloidal structures in use and storage of fat will vary affected by various external factors. In the warehouse storage, the temperature should not be higher than 35 ℃, containers should be sealed and can not leak into the water and foreign matter. When the barrel is open to take samples or product, do not leave holes in the packaging like drums, samples should be taken after fat smooth surface to prevent pit, or base oil will be compressed natural gravity and penetrate the sample left pits, affect the quality of the product. 5, no drop point grease How to determine the upper limit of its use temperature? Grease dropping point is a conditional test results can only express in a unified test conditions, some grease to melt or soften and drip temperature. It does not indicate its temperature. In terms of soap grease. Usually you can use the following drop point there is no problem about 30 ℃, the structure does not destroy fat. "Indian benevolence grease wholesale" With the development of science and technology, the grease thickener has a variety, such as carbon black, silica and other fat no drop point, that is, without dripping under the test conditions. Upper temperature limit of a grease made subject to two resin material, one base oil at elevated temperatures will occur oxidative deterioration, accompanied by the evaporation loss; one thickening agent for deterioration at high temperatures. Generally speaking, the use of grease temperature limit by the nature of the base oil greater conditionality, the maximum temperature limit for the mineral lubricants 120-150 ℃, short time can withstand 180 ℃ (high viscosity and better refined products) . Most greases are mineral oil based oil temperature is not too high. "Indian benevolence grease wholesale" 6, the grease hardens store (consistency increases), whether added to the base oil is diluted before use? Most of grease in the storage for some time, consistency (referring cone penetration value) larger, that is hard circumstances, if more than one consistency number, can be used directly, without prejudice for general lubrication. If the consistency varies greatly, that show excessive separation of base oil, may increase the mechanical parts lubrication friction, increase the mechanical power consumption, not directly. Some users have added to the base oil to dilute the already hardened (or thickening) of grease, so grease consistency becomes smaller (ie, soft) After use, the user should not be used this way, because of the lack of necessary homogenization treatment step grease colloidal stability deteriorates, increasing the oil will affect the use. Has thickened grease, other physical and chemical properties when little change in production plants can be added to the same base oil, then after homogenization step processing and analysis of qualified, can be used. "Indian benevolence grease wholesale" 7. Can I mix different types of grease to use? If the base oil of the same type (such as all petroleum oils or other similar base oil) of fat, different soap or thickener made fat, generally should not simply mix. For some types of fat, such as calcium and sodium based grease Grease, or lithium grease with lithium complex grease, etc., can be mixed with each other, generally does not cause performance has changed so much, does not affect use. "Indian benevolence grease wholesale" But extreme pressure grease, due to the presence of various active ingredients, when mixed with each other, each other dry mix additive will occur, resulting in lipid colloidal stability or mechanical stability deteriorated, affecting its performance . After mixing with each other before the different types of fat, fat blend of performance should be measured and then used to confirm no significant effect. "Indian benevolence grease wholesale" 8, how to determine the bearing grease in use fail? Many indicators bearing grease performance, mainly colloidal stability (sub oil), mechanical stability (100,000 times shear test, longer working cone penetration value) and oxidation stability, the combined result of these three indices, that is, bearing life. "Indian benevolence grease wholesale" operation in the bearing grease damage suffered mechanical force makes thickener fiber becomes broken, shorter, reducing the structure's ability to maintain the grease that consistency change, if change is consistency Assembly generated from the work surface loss phenomenon, while working in operation grease will be temperature increases, the base oil will evaporate and produce base oils reduce or partially destroyed due colloidal lipid oil to reduce the oil content so that fat loss, but also oxidation deterioration is possible. "Indian benevolence grease wholesale" Therefore, the bearing grease is, if after working in the base oil fat content of less than 60% -70% (or base oil or oil due to evaporation loss of 30% -40%) to reduce or even lead to the loss of lubricity bearing operation fails with the consistency of fat oxidation and deterioration decline and more will affect the operation of the bearing. 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