SKF Bearing  Prefixes and suffixes 

OBT Bearing           2017-9-4

SKF has been a leading global technology provider since 1907. Our fundamental strength is the ability to continuously develop new technologies – then use them to create products that offer competitive advantages to our customers.

We achieve this by combining hands-on experience in over 40 industries with our knowledge across the SKF technology platforms: bearings and units, seals, mechatronics, services and lubrication systems. Our success is based on this knowledge, our people, and our commitment to SKF Care principles.

The focus of SKF’s technology development today is to reduce the environmental impact of an asset during its lifecycle, both in our own and our customers’ operations. The SKF BeyondZero product portfolio is the latest example of what SKF has to offer in this area.

The designations of most SKF rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes, as shown in the table and the examples below.

Prefixes and suffixes provide additional information about the bearing.

Prefixes are mainly used to identify components of a bearing. They can also identify bearing variants.

Suffixes identify designs or variants, which differ in some way from the original design or from the current basic design. The suffixes are divided into groups. When more than one special feature is to be identified, suffixes are provided in the order shown in the table below. 

Descriptions of commonly used prefixes and suffixes are given in the following sub-sections.
Details of the significance of specific prefixes and suffixes are given in the relevant product sections.

C 1.Deviating or modified internal design with same boundary dimensions. As a rule the significance of the letter is bound to the particular bearing series
                    2. Y-bearing with cylindrical outside diameter, e.g. YET 205 C
C08             Geometrical tolerances to P5 tolerance class 
C083           C08 + C3
C084            C08 + C4
C1                Internal clearance smaller than C2
C2                Internal clearance smaller than Normal
C2H               Axial internal clearance in the upper half of the C2 range
C2L              Axial internal clearance in the lower half of the C2 range
C3               Internal clearance greater than Normal
C3P              Displaced clearance range comprising the upper half of the C3 plus the lower half of the C4 clearance range
C4                Internal clearance greater than C3
C5                 Internal clearance greater than C4
CA                1.Spherical roller bearing of C design, but with retaining flanges on the inner ring, guide ring centred on the inner ring and machined brass cage
                       2. Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance smaller than Normal (CB)
CAC               Spherical roller bearing of CA design, but with retaining flanges on the inner ring, guide ring centred on the inner ring and machined brass cage
CB                    1. Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have Normal axial internal clearance.
                          2.Double row bearing with controlled axial clearance
                            3. Single row angular contact ball bearing, high-speed B design, 15° contact angle
CC                       Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance greater than Normal (CB)
CC(J)                   Bearing with flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
CCJA                   Bearing with flangeless inner ring, guide ring centred on the outer ring raceway, two stamped steel cages
CD                      Single row angular contact ball bearing, high-capacity design, 15° contact angle
CE                       Single row angular contact ball bearing, high-speed E design, 15° contact angle
CJ                       Bearing with flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
CL0                    Accuracy to ABMA tolerance class 0 (inch bearings)
CL00                  Accuracy to ABMA tolerance class 00 (inch bearings)
CL3                     Accuracy to ABMA tolerance class 3 (inch bearings)
CL7A                  Pinion bearing, superseded by CL7C
CL7C                    High-performance design
CLN                    Tighter tolerances for ring widths and total (abutment) width in accordance with ISO tolerance class 6X
CN                       Normal internal clearance; only used together with an additional letter that identifies a reduced or displaced clearance range

Examples:
CNH   Reduced clearance range corresponding to the upper half of the actual clearance range
CNL     Reduced clearance range corresponding to the lower half of the actual clearance range
CNM    Reduced clearance range corresponding to the middle half of the actual clearance range
CNP     Displaced clearance range comprising the upper half of the actual clearance range plus the lower half of the next larger clearance range
CNR     Normal clearance range in accordance with the withdrawn DIN 620-4:1982
The above letters H, L, M and P are also used together with the clearance classes C2, C3, C4 and C5, e.g. C2H
CS                Contact seal of acrylonitrile-butadiene rubber (NBR) on one side of the bearing
2CS                   CS contact seal on both sides of the bearing
CS2               Contact seal of fluoro rubber (FKM) on one side of the bearing
2CS2               CS2 contact seal on both sides of the bearing
CS5                  Contact seal of hydrogenated acrylonitrile-butadiene rubber (HNBR) on one side of the bearing
2CS5                   CS5 contact seal on both sides of the bearing
CV                       Modified internal design, full complement roller set
Cxx(x)                Special clearance, the two- or three-digit number immediately following the C is the mean axial internal clearance in μm

D                       1. Deviating or modified internal design with same boundary dimensions; as a rule the significance of the letter is bound to the particular bearing series

Examples:
3310 D         Double row angular contact ball bearing with a two-piece inner ring
K 40×45×17 D      Split needle roller and cage assembly (radial)
                          2.  Polymer ball bearings with a component made of Ceramic ZrO2
DA                Modified snap ring grooves in the outer ring; two-piece inner ring held together by a retaining ring
DB                Two bearings matched for mounting back-to-back. A number immediately following the DB identifies the design of the ring spacers. <>
DF                   Two bearings matched for mounting face-to-face. A number immediately following the DF identifies the design of the ring spacer. ><
DG              Set of two bearings for universal matching
DR               Two bearings matched to one set
DS               Single direction thrust bearing with two shaft washers
                        Split radial needle roller and cage assembly
DT                  Two bearings matched for mounting in tandem. A number immediately following the DT identifies the design of the ring spacers. 
E                       Deviating or modified internal design with same boundary dimensions; as a rule the significance of the letter is bound to the particular bearing series; usually indicates reinforced rolling element complement
Adapter sleeve without key slot, with a KMFE lock nut or standard adapter sleeve with a HME lock nut
EC               Optimized internal design incorporating more and/or larger rollers and with modified roller end/flange contact
ECA              CA design spherical roller bearing with reinforced roller set
ECAC                CAC design spherical roller bearing with reinforced roller set
EGS                      Inner ring with a non-directionally ground raceway
EH                   Adapter sleeve without key slot, with a KMFE .. H lock nut
EJA                Flangeless inner ring, guide ring centred on the outer ring raceway, two stamped steel cages
EL                 Adapter sleeve without key slot, with a KMFE .. L lock nut
F                  Machined steel or special cast iron cage, rolling element centred
F1                 Grease fill 10–15% of the free space in the bearing
F3                Machined cage of spheroidal cast iron, shaft washer centred
FA                  Machined steel or special cast iron cage, outer ring centred
FB                 Machined steel or special cast iron cage, inner ring centred
                     Single row angular contact ball bearing, high-speed B design, 18° contact angle
FE                   Single row angular contact ball bearing, high-speed E design, 18° contact angle
2F                  Contact seal made of acrylonitrile-butadiene rubber (NBR), additional plain flinger, on both sides

SKF ,  FAG , TIMKEN , NSK , KOYO , NACHI , NTN , INA , Luk , IKO , THK ,   FYH , ASAHI , SNR, NADELLA , URB, ZKL, ZVL , TORRINGTON ,  JNS, IJK , GMN , GRW , STIEBER, DODGE, FAFNIR , MCGILL , ROLLWAY, LINK-BELT ,PEER,RHP, FLT  etc

More information about bearing,  please contact me.

OBetter Bearing company can supply the  quality bearing with the competitive Price.  please contact me.

manufacturer and exporter
Co. Name: Shandong Obetter Bearing Co., Ltd
WebSite: www.obtbearing.com  
E-mail: obtbearing@163.com 
Mobile & WhatsApp : 0086-130-6503-2620

tage: copy bearing, bearing seal , Linear Motion Bearing , Shandong bearings, Linqing Bearings,  quality bearings,  china bearing factory ,  ball bearings, roller bearings,   chinese bearing company,  chinese bearing factory,cheap bearings ,  china bearing manufacturer , bearing supplier ,   good quality bearings,  lowest price bearings , auto bearings, rodamientos - roulements - подшипникии  - cuscinetti - rolamentos - lo?iska - rulmanlar - Kegelrollagers - rulman  - rulment