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SKF Bearings Suffixes P6CNR , PHAS , QCL7C , 2RS5 , SP
OBT Bearing 2017-9-8
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.
Prefixes and suffixes provide additional information about the bearing.
Prefixes are used to identify components of a bearing and are usually then followed by the designation of the complete bearing, or to avoid confusion with other bearing designations. For example they are used in front of designations for tapered roller bearings according to a system described in ANSI/ABMA Standard 19 for (predominantly) inch bearings.
Suffixes P - S
P 1. Glass fibre reinforced polyamide 66 cage, rolling element centred
2. Precision lock nuts made of sintered steel (For KMD 11 and KMD 12 lock nuts only)
P2 Dimensional and geometrical tolerances in accordance with P2 tolerance class
P4 Dimensional and geometrical tolerances in accordance with P4 tolerance class
P4A Dimensional tolerance in accordance with ISO tolerance class 4, geometrical tolerance lower than ISO tolerance class 4
P4C Dimensional tolerances approximately to ISO tolerance class 4, geometrical tolerances lower than ISO tolerance class 4 for radial bearings
P5 Dimensional and geometrical tolerances in accordance with P5 tolerance class
P6 Dimensional and geometrical tolerances in accordance with P6 tolerance class
P43 P4 + C3
P52 P5 + C2
P62 P6 + C2
P63 P6 + C3
P64 P6 + C4
P6CNR P6 + CNR
PA Glass fibre reinforced polyamide 66 cage, outer ring centred
PA9A Dimensional and geometrical tolerances in accordance with ISO tolerance class 2
PBC Set of five bearings arranged tandem back-to-back <<>>>
PBT Set of five bearings arranged back-to-back and tandem <>>>>
PE Enlarged diameter tolerance and axial run-out to P5 tolerance class for radial bearing
PEX SKF Explorer bearing, used only when same-sized conventional and SKF Explorer bearings are available
PFC Set of five bearings arranged tandem face-to-face >><<<
PFT Set of five bearings arranged face-to-face and tandem ><<<<
PG Set of five bearings for universal matching
PH Glass fibre reinforced polyetheretherketone (PEEK) cage, rolling element centred
PHA Glass fibre reinforced polyetheretherketone (PEEK) cage, outer ring centred
Carbon fibre reinforced polyetheretherketone (PEEK) cage, outer ring centred (SuP)
PHAS Glass fibre reinforced polyetheretherketone (PEEK) cage, outer ring centred, lubrication grooves in the guiding surface
PPA Track runner bearing with a PA66 axial sliding and sealing ring on both sides. Improved crowned profile of the outer ring running surface
PPSKA KR design cam follower, sizes 16 and 19, with a PA66 axial sliding and sealing ring on both sides, improved crowned profile of the outer ring running surface and a hexagonal recess in the head of the stud, no relubrication features
PPXA Cam followers with PPA features except for the outer ring running surface, which has a cylindrical profile
Q Optimized contact geometry and surface finish
Polymer ball bearing with components made of glass
QBC Set of four bearings arranged tandem back-to-back <<>>
QBT Set of four bearings arranged back-to-back and tandem <>>>
QCL7C Bearing with very tight geometrical tolerances and high preload capability
QFC Set of four bearings arranged tandem face-to-face >><<
QFT Set of four bearings arranged face-to-face and tandem ><<<
QR Set of four single row deep groove ball or cylindrical roller bearing matched for equal distribution of radial load
QT Set of four bearings arranged in tandem <<<<
R Flanged outer ring
Polymer ball bearing with components made of borosilicate glass
RF Contact seal made of acrylonitrile-butadiene rubber (NBR), additional rubberized flinger, on one sde of the bearing
2RF RF contact seal, on both sides of the bearing
RS Contact seal made of acrylonitrile-butadiene rubber (NRB), on one side of the bearing
2RS RS contact seal, on both sides of the bearing
RS1 Contact seal made of acrylonitrile-butadiene rubber (NRB), on one side of the bearing
2RS1 RS1 contact seal, on both sides of the bearing
RS1Z Sheet steel reinforced contact seal of acrylonitrile-butadiene rubber (NBR) on one side and one shield on the other side of the bearing
RS2 Contact seal made of fluoro rubber (FKM), on one side of the bearing
2RS2 RS2 contact seal, on both sides of the bearing
RS5 Contact seal made of hydrogenated acrylonitrile-butadiene rubber (HNBR), on one or both sides of the bearing
2RS5 RS5 contact seal, on both sides of the bearing
RSH Contact seal made of acrylonitrile-butadiene rubber (NBR), on one side of the bearing
2RSH RSH contact seal, on both sides of the bearing
RSL Low-friction contact seal made of acrylonitrile-butadiene rubber (NBR), on one side of the bearing
2RSL RSL low-friction contact seal, on both sides of the bearing
RZ Low-friction non-contact seal made of acrylonitrile-butadiene rubber (NBR), on one side of the bearing
2RZ RZ low-friction non-contact seal, on both sides of the bearing
S Matched bearings for an equal load distribution. The number preceding indicates the number of bearings, e.g. NK 50/25 TN/2S Polymer ball bearing with components made of Stainless steel 1.4034
S0 Bearing heat stabilized for operating temperatures ≤ 150 °C (300 °F)
S1 Bearing heat stabilized for operating temperatures ≤ 200 °C (390 °F)
S2 Bearing heat stabilized for operating temperatures ≤ 250 °C (480 °F)
S3 Bearing heat stabilized for operating temperatures ≤ 300 °C (570 °F)
SB SKF ConCentra ball bearing with shortened inner ring
SM.. Special grease, two numbers following identify the grease
/SORT.. Tolerance grade of needle rollers of a needle roller and cage assembly, the numbers following identify the actual limits in μm, e.g. /SORT-2-4
SP Dimensional tolerances in accordance with ISO tolerance class 5, geometrical tolerances in accordance with ISO tolerance class 4
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 , GPZ , SPZ , VBF , etc
More information about bearing, please contact me.
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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
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