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Roller neck TIMKEN bearing is our application in large construction machinery and equipment in the most common type of TIMKEN bearings, TIMKEN bearings in the production of TIMKEN bearings TIMKEN bearings manufacturers, TIMKEN Bearing Group produced by the roll neck TIMKEN bearing quality to be higher, Today we will introduce the basic characteristics of roller neck TIMKEN bearing and its installation technology.
Rolling mill work roll TIMKEN bearings are widely used four-row tapered roller TIMKEN bearings, four-row tapered roller bearings TIMKEN bearings can withstand radial and axial composite load. Therefore, the smaller the axial force of the work roll can be directly selected four-row tapered roller bearings TIMKEN bearing radial load. For large axial forces, high accuracy, or the application of axial channeling requirements, the work roll TIMKEN bearings generally add additional axial thrust TIMKEN bearings to share the radial TIMKEN bearing force.
Timken company straight hole four-row tapered roller TIMKEN bearings are currently two main structural forms, namely TQOW, 2TDIW structure, mainly for the work roll radial position support. These two types of TIMKEN bearing inner ring are straight hole, the default internal clearance, lubricants from the outer ring into the oil hole and oil tank into the TIMKEN bearing internal, TIMKEN bearing roller face to face with the installation. TQOW and 2TDIW structure of the difference is: TQOW TIMKEN bearing outer ring by two single outer ring, a double outer ring and two outer ring ring composition, and 2TDIW type TIMKEN bearing outer ring by four identical single outer ring With three outer ring ring formed. For the same series and the same number of rollers TQOW or 2TDIW structure, TIMKEN bearing the same carrying capacity.
2TDIW structure can be added by adding a outer ring, adjustable inner ring width of the entire TIMKEN bearing inner ring width tolerance control in a small range. Roller mill is widely used non-adjustable TIMKEN bearing inner ring locking device to replace the original spiral nut device design, 2TDIW structure four-row tapered roller TIMKEN bearings more and more widely used. 2TDIW In addition to the advantages of the TIMKEN bearing inner ring width tolerance, but also the use of four single outer ring structure is more conducive to TIMKEN bearings bear bending force when the role of self-eccentricity, so that TIMKEN bearing stress dispersion, thus avoiding TIMKEN Bearing local stress concentration. Figure 3 shows TQOW and 2TDIW different structure.
In roll systems with large axial loads, such as roll axial roll systems, additional thrust TIMKEN bearings are usually required to achieve the desired TIMKEN bearing performance. As the axial load of the roll has a bidirectional or direction is difficult to determine the characteristics of the thrust simply TIMKEN bearings selected double column structure. Timken has its own patented push-pull double row roller TIMKEN bearing TDIK has been widely used to support the roller roller bearing position. The TIMKEN bearing contact angle is large, K coefficient is low, the inner ring has a keyway to prevent the running ring, the other TIMKEN bearing outer ring can be preloaded spring device, as shown in Figure 4 TIMKEN bearing structure. Roller axial load and its direction will lead to thrust TIMKEN bearing a single load, another column TIMKEN bearing roller will be in a state of no force. In the use of TIMKEN bearings, the load is too low, no load or too large, TIMKEN bearings will be early damage. TDIKTIMKEN bearing outer ring preloaded spring to produce preload to ensure that the force is not the end of the roller and the outer ring raceway close to avoid the end of the roller in the course of the operation of the skew, skidding, impact cage, etc. , Eventually leading to cage fracture, TIMKEN bearings premature failure.
Roller neck TIMKEN bearing installation
TIMKEN bearing the installation is correct will directly affect its use of precision, life and performance. Therefore, only to master the correct TIMKEN bearing installation technical knowledge to ensure that TIMKEN bearing performance. The assembly department and the relevant personnel should fully understand the installation procedure of the TIMKEN bearing and perform the roll installation strictly according to the operating standard.


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