Four-Row Cylindrical Roller Radial Bearings
Four row Cylindrical Roller Bearings are primarily designed and used as roll-neck bearings in rolling mills. The four rows of rollers lends itself to carry large radial loads for the given bearing cross section. Contoured rollers with tight diametrical tolerances maximize the ability of this bearing to evenly distribute the load to all four rows. Most common types include the use of a machined brass finger cage or a machined mild steel finger cage. No suffix is required for the brass cage but the SM suffix is used for the steel. In larger sizes, the use of a steel pin type cage with hollow rollers is standard. Many outer race and inner race configurations and design types are available to meet installation or interchangeability requirements. Most bearings are supplied with C4 Internal Radial Clearance and P5 Accuracy to perform well in these roll neck applications.
Cylindrical roller bearing with four or more rows of rollers are used almost exclusively for rolling mills. They have lower friction than other roller bearings and can be successfully used where hight speed operation is called for. The low cross-sectional height of cylindrical roller bearings means that the roll necks can have large diameter in relation to the roll itself. In four rows cylindrical roller bearings, the rollers are guided between integral or not-integral flanges on the outer ring. The inner ring is without flanges; axial displacement of the shaft with respect to the housing can therefore be accomodated by the bearing within certain limits. Depending on the application, four rows cylindrical roller bearings can be supplied with a cylindrical bore or tapered bore. The inner or outer ring may be in one piece ore in more than one piece.
![Type TIMKEN 390RY2103 Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027661-type-timken-390ry2103-four-row-cylindrical-roller-radial-bearings.jpg)
- Type TIMKEN 390RY2103 Four-Row Cylindrical Roller Radial Bearings
- TIMKEN
- 390RY2103
![Width B TIMKEN 820RX3264D Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027665-width-b-timken-820rx3264d-four-row-cylindrical-roller-radial-bearings.jpg)
- Width B TIMKEN 820RX3264D Four-Row Cylindrical Roller Radial Bearings
- TIMKEN
- 820RX3264D
![Backing Housing Diameter D<sub>s</sub> TIMKEN 145RYL1452 Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027659-backing-housing-diameter-d-sub-s-sub-timken-145ryl1452-four-row-cylindrical-roller-radial-bearings.jpg)
![Angle of Chamfer r<sub>1smin</sub> TIMKEN 600RX2744 Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027658-angle-of-chamfer-r-sub-1smin-sub-timken-600rx2744-four-row-cylindrical-roller-radial-bearings.jpg)
![Number of Lubrication Holes TIMKEN 705RX3131B Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027658-number-of-lubrication-holes-timken-705rx3131b-four-row-cylindrical-roller-radial-bearings.jpg)
![Static Load Rating C<sub>o</sub> TIMKEN 880RXK3366 Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027670-static-load-rating-c-sub-o-sub-timken-880rxk3366-four-row-cylindrical-roller-radial-bearings.jpg)
![Dynamic Load Rating C<sub>1</sub><sup>1</sup> TIMKEN 380RX2086A Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027667-dynamic-load-rating-c-sub-1-sub-sup-1-sup-timken-380rx2086a-four-row-cylindrical-roller-radial-bearings.jpg)
![Width C TIMKEN 650RX2841C Four-Row Cylindrical Roller Radial Bearings](https://m.loydsn.com/uploaded_images/d2027658-width-c-timken-650rx2841c-four-row-cylindrical-roller-radial-bearings.jpg)
- Width C TIMKEN 650RX2841C Four-Row Cylindrical Roller Radial Bearings
- TIMKEN
- 650RX2841C