Products Catalog

Specification

Backing bearings have been specially developed for cold rolling mills of the cluster type, but can also be used for other applications, e.g. straightening or bending machines. Backing bearings are roller bearings having a particularly thick-walled outer ring and can be mounted on stationary support shafts to form back-up or straightening rolls. The forces from the work rolls are transmitted via the support shaft and a system of support saddles to the roll or machine stands. Fig 1 shows the arrangement of the backing bearings on the eight support shafts of a 20-roll mill.
SKF backing bearings for cluster mills are produced in many designs but are generally based on double or three-row cylindrical roller bearings. Single row needle roller bearing and double row tapered roller bearing designs are also available. The logarithmic contact profile between rollers and raceways produces a vastly improved stress distribution under all load conditions as well as when the bearing is misaligned under load. An optimised finish on all surfaces in contact serves to enhance lubrication conditions. As lubricant is supplied to the bearings via the support shaft, SKF backing bearings have lubrication holes and some have one or more annular grooves in the inner ring.
610627B
396040
315268B
315268BC
BCZ-0510
BC2B 319343B
316737A
316737AB
316737AC
316737D/ HB1
BCZ-0508
BCZ-0507
315018A
3150 18C
BC2B326495A/ HB1
BCZ-0011
BCZ-0509
BC2B-322564
BCZ-0504
BT2B332573C
31483 3A
314833B
319028
BNTB322758/ HB1
BNTB322891/ HB2
BNTB326074B/ HB1
BNTB326074/ H B1
316388AV
316388C
BC3B 319809
BC3B320899
BC3B326277/ HB1
316388AB
315020A
315020AB
315515A
315515AB
315515B
BT2B332618A