(1) Select long life Timken bearing model with high load capacity Timken bearing selection should take into account the price of Timken bearing, or use Timken bearing with higher load capacity but more expensive, or try to prolong its service life by using ordinary Timken bearing.
such as cylindrical roller bearings with convexity, spherical roller bearings with symmetrical rollers, reinforced tapered roller bearings and ball long life Timken bearing ball Timken bearings with corrected ball groove bus, or 70000cd series Timken bearings are used to replace deep groove (single row centripetal) ball bearings,
These with high load capacity may have higher fatigue life due to the improvement of stress distribution or the large number of rolling elements.
In order to select the appropriate size of the working load, speed and operating temperature of Timken bearing must be accurately calculated or verified. The load has a great impact on the life of Timken bearing, so although the load is difficult to measure, it should be measured as accurately as possible.
When it is difficult to measure the load, the actual power consumed by the motor can be measured, and the power loss along the way can be calculated according to the transmission route and deducted until the load is closer to the actual load.
the expected fatigue life of Long Life Timken bearing must be reduced by a greater margin, which must be remedied. If the installation position allows, Timken bearing with a larger size can be selected; If the radial dimension is limited, the wider Timken bearing should be selected
when there is a wider ; If wider Timken bearings cannot be used, Timken bearings with higher load carrying capacity can be used instead.
When selecting long life Timken bearing material, its price should also be taken into account. When vacuum smelting or electroslag remelting steel has to be used, it should be noted that the lubrication conditions must be improved in order to double the expected fatigue life of Timken bearing.
Of course, the cost of selecting long life Timken bearing made of this kind of high-quality steel is much more expensive than selecting Timken bearings with high load capacity.
However, for Timken bearings that are difficult to access in machines and are very difficult to assemble and disassemble, or long life Timken bearings used in mining and tunnel operation machinery, sometimes they must be considered for maintenance.
Regardless of whether the working life, static load coefficient and economy meet the requirements, the size calculation must be carried out before the final selection of other sizes and structural forms of Long Life Timken Bearing Koyo bearings. The calculation includes comparing the actual load of Koyo bearing with its load capacity. The static load of Koyo bearing refers to that the Long Life Timken Bearing Koyo bearing is static after loading (there is no relative movement between the inner and outer rings) or the rotation speed is very low. In this case, calculate the coefficient of excessive plastic deformation of raceway and rolling element.
The early fatigue damage coefficient of raceway and rolling element is checked by dimensional calculation. Only in special cases can the nominal service life be calculated according to DIN ISO 281. For the design that pays attention to economic performance, we should make full use of the bearing capacity of Long Life Timken Bearing Koyo bearing as much as possible. The more we want to make full use of Koyo bearings, the more important it is to calculate the accuracy of Koyo bearing size selection.