TIMKENÂ® Roll Neck Bearing (1): Features

Source: China Bearing Network Time: 2018-07-24

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

The rolling mill is recognized as the most demanding and most demanding bearing application. In many key parts of the rolling mill; the bearing will be in heavy load, impact load, uneven speed, high temperature and high pollution working environment. Roller neck bearing in rolling mill equipment; It can be said that it is the heart of the rolling mill; it is precisely because of this harsh working environment that the demand for high-performance bearings is required. As long as the high-performance bearing can ensure that the rolling mill can be connected to the maximum limit in the extremely harsh environment; Stop the time to help customers reduce the cost of invention. Roller neck roll bearing equipment and protection not only extend the bearing and other parts of the mill life; and can prevent the serious problems caused by bearing failure early; then prevent unexpectedly high-level stop loss. In the process of using roll neck bearings; attention should be paid to the skill requirements of equipment and protection; and comply with the bearing-related operating procedures.
TIMKENÂ® is the world's leading manufacturer of bearings; it is also the first bearing manufacturer in the world to produce steel; Timken started pure steel production in the 1920s; hands-on mills; Timken The metallurgical profession has an in-depth knowledge; it also knows the needs of steel mill customers for bearing products and services; and announces many related products and services applicable to rolling mills and their auxiliary equipment.
Roll neck bearing fundamental features
Four-row tapered roller bearings are widely used in rolling mill work roll bearings; four-row tapered roller bearings can accept radial and axial composite loads. Therefore, the work rolls with small axial force can directly use four-row tapered roller bearings. Accept radial axial load. About large axial force; high precision; or use of axial roller demand; work roll bearings generally add rated axial thrust bearing to separate radial shaft receiving force.
Timken's straight-hole four-row tapered roller bearings are currently available in two layouts; TQOW, 2TDIW layout; primarily for the radial azimuth support of the work rolls. Both types of bearing inner rings are straight holes, The preset internal clearance and lubricating oil enter the bearing from the oil ring and the oil groove of the outer ring spacer; the bearing roller adopts the face-to-face device mode. The difference between the TQOW and 2TDIW layout modes is: TQOW bearing outer ring consists of two single outer The ring, a double outer ring and two outer ring spacers; and the 2TDIW bearing outer ring consists of four identical outer rings and three outer ring spacers. TQOW or 2TDIW for the same series and the same number of rollers Layout mode; the bearing can be the same.
2TDIW layout can be added by adding an outer ring spacer; the inner ring spacer width can be adjusted to make the inner ring width of the whole bearing control in a small range. The rolling mill is more and more widely used instead of the adjustable bearing inner ring locking device. The original spiral nut equipment is depicted; 2TDIW layout four-row tapered roller bearing is more and more widely used. 2TDIW In addition to manipulating the bearing inner ring width of the public service, the four single outer ring layout is more favorable for the bearing to accept the bending roll. The force acts as a self-biasing effect; the stress on the bearing is dissipated; then the stress of the bearing part is prevented. The TQOW shown in Figure 3 is not the same as the 2TDIW.
In the roll system with large axial load; such as roll axial roll system; to achieve the bearing function of the bearing; general demand rated thrust bearing. Because the axial load of the roll has two-way or direction is difficult to distinguish features; The push bearing adopts the double-row layout. Timken has the patented thrust double row roller bearing TDIK which has been widely used for supporting roller and work roll axial azimuth support. This type of bearing has a large contact angle; K factor Low; the inner ring has a keyway to prevent running circles; other bearing outer rings can be preloaded with spring-loading equipment; as shown in Figure 4, the bearing layout. Roller axial load and its effect direction will incur thrust bearing single row bearing; another column The bearing roller will be in an unstressed condition. In the operation of the bearing; the load is too low, no load or too large; the bearing will be damaged early. The preload of the TDIK bearing outer ring preloaded spring can guarantee no force. The end roller and the outer ring raceway are tightly fitted; the unsupported roller is prevented from being inclined, slipping, hitting the cage during the operation; the end causes the cage to crack; the bearing fails early.

Recommend to friends comments close window

Bearing related knowledge

Sweden SKF bearing smooth door analysis daily bearing network bearing spot introduction import bearing public service and cooperation options overview
Protection of NTN Spherical Bearings on the Classification of Several Common Rolling Bearings

This article links to http://
Please indicate the bearing network http://

Previous:SKF: The Needs of Industrial Pumps Next: Analysis of LM Linear Bearings

Metal Hole Saw

Metal Hole Saw,Carbide Big Hole Saw Bit,Metal Hole Saw Bit,Hole Saw Cutter Bit

Danyang Yongshun Tools Co.,Ltd , https://www.ysdrillbitset.com