The basic characteristics and the roll neck TIMKEN bearing installation technology

Roll neck TIMKEN bearing is we applied in large construction machinery and equipment of the most common type of TIMKEN bearings, the current in the production of the roll neck TIMKEN bearing TIMKEN bearing manufacturer, TIMKEN bearing group the quality of the roll neck TIMKEN bearing production is much higher, today we will introduce the roll neck TIMKEN bearing characteristics and its installation technology. Mill work roll TIMKEN bearing broader chooses four row circular cone roller TIMKEN bearings, four row circular cone roller TIMKEN bearing itself can bear the composite radial and axial load. Axial force is small, therefore, the working roll can be directly selected four row circular cone roller diameter TIMKEN bearing axial load. For large axial force, high precision, or there is a requirement for axial roll, work roll TIMKEN bearing generally add additional axial thrust to share the TIMKEN bearing radial TIMKEN bearing load. TIMKEN straight hole four row circular cone roller TIMKEN bearing at present there are mainly two kinds of structure forms, namely TQOW, 2 tdiw structure form, it is mainly used for work roll radial position. The two types of TIMKEN bearing inner ring are straight hole, the default internal clearance, lubricating oil by the outer ring insulation oil hole and the groove into the TIMKEN bearing internal, TIMKEN bearing roller mounted with face to face form. TQOW with 2 tdiw structure is mainly: the difference between a type TQOW TIMKEN bearing outer ring consists of two single outer ring, a pair of outer ring and two outer rings, while type 2 tdiw TIMKEN bearing outer ring by four single outer ring and the same three outer ring apart. For the same series and the same number of roller TQOW or 2 tdiw structure form, the carrying capacity of the TIMKEN bearing the same. 2 tdiw structure form is by adding an outer ring, inner ring spacer ring width adjustable make whole TIMKEN bearing inner ring width tolerance control in small range. Mill is more and more widely adopted an adjustment type TIMKEN bearing inner ring locking device to replace the original screw nut device design, 2 tdiw structure form four row circular cone roller TIMKEN bearing more and more widely. 2 tdiw except TIMKEN bearing inner ring width tolerance control advantages, also adopts four single outer ring structure is more advantageous to TIMKEN bearings under the force of bending roll play the role of the eccentric, scatter by TIMKEN bearing stress, so as to avoid the TIMKEN bearing local stress concentration. As shown in figure 3 TQOW tdiw with 2 different structure forms. In the axial load large roll system, such as rolling roller to roll system, in order to obtain ideal TIMKEN bearing performance, usually requires additional thrust TIMKEN bearings. Due to the rolling roller to the load characteristics biphasic or direction is hard to judge, thrust TIMKEN bearing usually choose double column structure. TIMKEN has independent design patent thrust double row roller TIMKEN bearing TDIK has been widely used to support the work roll shaft to the position of the rolls. This type of TIMKEN bearing contact Angle is large, low K coefficient, inner ring has a key way to prevent run laps, additional TIMKEN bearing outer ring can pre-load spring mechanism, the TIMKEN bearing structure as shown in figure 4. Rolling roller to load and its direction can lead to thrust TIMKEN bearings, single row bearing and one TIMKEN bearing roller is not in force. In use of TIMKEN bearings, low load and no load or is too large, TIMKEN bearing will be damaged early. TDIKTIMKEN bearing outer ring with a spring can ensure the pretightening force of the roller bearings with their fit closely, avoid mechanical side roller appear skewed in the process of operation, skid, impact cage, and so on and so forth, a bracket will be eventually lead to fracture, TIMKEN bearing failure in advance. Roll neck TIMKEN bearing TIMKEN bearing installation is correct will directly affect the use of precision, life and performance. Therefore, only the right TIMKEN bearing installation technical knowledge can ensure that TIMKEN bearing performance. Assembly department and related personnel to cope with the TIMKEN bearing installation steps to fully understand, and roll installed in strict accordance with the operation standard