Steel Mill Special-purpose Backing Bearing NNCF2664130Y NNCF298034

JINGPENG MACHINERY & EQUIPMENT (SHNGHAI) CO., LTD


Penny Wang
Email: penny@yosobearing.com
Whatsapp/wechat:  +86 15132291372
skype: pennywang10.23

cylindrical roller backing bearing  steel mill backing bearing  steel mill cylindrical roller bearing

Backing bearings are typically cylindrical roller bearings, with extra thick outer rings and handled in batches per shaft. Backing bearings are preferably handled as complete sets.

Product Name: NNCF2664130Y

Size:   130x320x130mm

Weight: 60.7 KG

Material: Bearing steel &stainless steel

Packaging Details: Inner PE polybag and Outer export carton

Lead Time:   less 5000 pcs 5-7 day,more than 5000pcs 15-20 days

Payment Terms:  TT/LC/Western Union/Paypal


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.

Backing bearings are typically cylindrical roller bearings, with extra thick outer rings and handled in batches per shaft. Backing bearings are preferably handled as complete sets.

In additional to the general remanufacturing process the set of backing bearings total radial cross section (wall thickness) is machined to achieve a very tight cross section variation of all bearings within the batch/shaft. The backing bearing remanufacturing process has been adapted from the general bearing remanufacturing process:
regrind of the outer ring outside surface and refresh the logarithmic profile 
assemble, inspect and reclassify section height groups.


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.

Specifications List

Model NO.

NNCF2660159P4   NNCF2660160H   NNCF2660160J
NNCF2660171       NNCF2660172SKP4
NNCF2660170        /   (314833A)
NNCF2660172      NNCF2660168
NNCF2660150      / (517384)
NNCF2660160     / (319028)  /  548314)
C792726EK          /  (314833B) / (548417)
549722P4X         NNCF2664130Y  NNCF298034
NNCF3272140       / (545300)
NNCF3680170HC     NNCF3680170P4        NNCF3680170P4Y  
NNCF3680171          NNCF3680170X /(BNTB322758/HB1)
NNCF3680217 /(514278) / (315020A)   
NNCF3680224 /(BNTB322891/HB1)
NNCF3680224Y        NNCF3680179HC        NNCF368292    
NNCF3682235           NNCF41104152           NNCF41104160
NNCF41104167        NNCF41104240HC       NNCF061450     
NNCF082232            NNCF112452 /(396040)
NNCF112464           NNCF143274 /(563882)    
NNCF143290 /(540268) /(315268B)    
549715P4Y              NNCF1638120      NNCF1639120     
NNCF1737105         NNCF1836100      NNCF1840140
NNCF184494 /(540565) /(BC2B319343B)    
NNCF1844120 /(517329) /(316767A)   
NNCF204596 /(540337)
20DC23120 /(540700) /(315018A)           NNCF2045120P4 /(315018C)   NNCF2052105       260110P4
NNCF2252110H      NNCF2252110HC    NNCF2252110HY    
NNCF2252125 /(518101)   NNCF2252140 /(540060)
NNCF2803110         NNCF2256120          NNCF245231   
54972P4                  NNCF2656100          NNCF2658100