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skf ball bearings high temperature FAQS

QWhat's the feature of SKF high temperature bearings ?

AReduced total operating cost The bearings are designed to maintain the radial clearance needed for high temperature operation and so will not seize, even when they cool rapidly, and therefore provide a long service life. Virtually maintenance-free operation The bearings are lubricated for life and do not need relubrication. Only variant VA201 without shields requires relubrication. Excellent performance under severe conditions: hot conditions dry environments low rotational speeds Reduced environmental impact Reduced machine design complexity

QWhat should be paid attention to in the installation of high temperature bearing？

A1. Clean the bearing and rotate flexibly 2. Vertical type: the radius of the fixed circle ball port is 90 degrees to the load direction; flat type: the end face with the ball port is upward 3. The end face with the ball port is inward, and is not impacted by the installation force. 4. Directly hit the sleeve and evenly transfer the force to the end face of the bearing (when the fit interference is large or large-scale bearing, oil hot hole parts should be installed at about 95 degrees with appropriate force) 5. It is not allowed to add non high temperature lubricant and rough lubricant. 6. High temperature lubricant shall be added when necessary at low speed and high and medium speed; the clearance shall be adjusted to suit 7. No debris and sundries enter, and the wheels can rotate freely.

QHow to choose the lubricate of high temperature bearings?

A1. Choose low viscosity grease to ensure the existence of oil film. When the bearing is running at high speed, it will produce high resistance, more heat and lead to high temperature. 2. When the working temperature changes greatly, oil products with high viscosity index shall be selected. Oil products with high viscosity and flash point, good oil property and oxidation resistance stability and corresponding additives shall be selected when working at high temperature. Low temperature resistant oil with low viscosity, low water content and low freezing point should be selected. 3. Due to the working environment, oil with strong anti emulsification, oil and rust resistance shall be selected for bearing grease, and dust-proof sealing shall be paid attention to in dusty environment. The environment with corrosive gas should choose the grease with good corrosion resistance.

QWhat is the material classification of high temperature bearings?

AHigh temperature resistance of common bearing steel: 150-200 ℃ (its structure is full rolling body, short service life, high maintenance cost in later stage) High temperature alloy steel: 300-500 ℃ (its structure includes two kinds of cage and full rolling body; its service life is more than one year, recommended) Silicon nitride ceramic rolling element: 800-1200 ℃ (its structure is full of rolling element, with long service life and high cost) If your use environment does not exceed 500 ℃, you can use the second material.