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SKF Bearings Suffixes
OBT Bearing 2017-9-9
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 T - Z
T
A number immediately following the T identifies the total width of matched bearings, arranged back-to-back or in tandem
Polymer ball bearing with components made of stainless steel 1.4401
Trapezoidal thread
TA Window-type cage of fabric reinforced phenolic resin, outer ring centred
TB Window-type cage of fabric reinforced phenolic resin, inner ring centred
TBT Set of three bearings, two bearings arranged back-to-back and the third in tandem <>>
TFT Set of three bearings, two bearings arranged face-to-face and the third in tandem ><<
TH Snap-type cage of fabric reinforced phenolic resin, rolling element centred
TN Glass fibre reinforced polyamide 66 cage, rolling element centred; for SABB the cage is not glass fibre reinforced
TN9 Glass fibre reinforced polyamide 66 cage, rolling element centred; for CARB bearings the cage is made of PA46
TL Adapter sleeve with a lock nut with lower sectional height, but with key slot positions for a locking clip
TNH Glass fibre reinforced polyetheretherketone (PEEK) cage, rolling element centred
TNHA Glass fibre reinforced polyetheretherketone (PEEK) cage, outer ring centred
TR Three bearings matched to one set
TT Set of three bearings arranged in tandem <<<
U
U combined with a one- or two-digit number identifies tighter total width tolerance,
Examples:
U2... +0,05/0 mm
U4... +0,10/0 mm
Y-bearing without locking device
/U Sales area worldwide
UP Dimensional tolerances in accordance with ISO tolerance class 4 and geometrical tolerances lower than ISO tolerance class 4
V Full complement bearing (without cage)
V... V combined with a second letter, identifies a variant group, and followed by a three- or four-figure number denotes variants not covered by "standard" designation suffixes. Examples:
VA Application oriented variants
VB Boundary dimension deviations
VE External or internal deviations
VL Coatings
VQ Quality and tolerances other than standard
VS Clearance and preload
VT Lubrication
VU Miscellaneous applications
V001 CL7C and /2
VA201 Bearing for extreme temperatures with a stamped steel cage, lubricated with a polyalkylene glycol/graphite mixture
VA208 Bearing for extreme temperatures with a segmented cage made of graphite
VA210 Graphite-based lubricant
VA2101 Graphite-based lubricant and PFPE oil additive
VA228 Bearing for extreme temperatures with a coronet cage made of graphite
VA237 Graphite-based lubricant, PFPE oil additive and nano particles
VA260 Graphite-based lubricant; rings, rolling elements and cage(s) phosphated
VA261 Graphite-based lubricant and PFPE oil additive; rings, rolling elements and cage(s) phosphated
VA267 Graphite-based lubricant, PFPE oil additive and nano particles; rings, rolling elements and cage(s) phosphated
VA301 Bearing for railway vehicle traction motors
VA305 Bearing for railway vehicle traction motors + special inspection routines
VA3091 Bearing for railway vehicle traction motors + external surfaces of the outer ring are coated with aluminium oxide
VA321 Optimized internal design
VA350 Bearing for railway axleboxes
VA380 Bearing for railway axleboxes according to EN 12080:1998
VA405 Bearing for vibratory applications, surface-hardened stamped steel cages
VA406 Bearing for vibratory applications, surface-hardened stamped steel cages, but PTFE coated cylindrical inner ring bore
VA606 Crowned raceway on the outer ring, logarithmic profile on the inner ring and special heat treatment
VA607 Same as VA606, but other outside diameter tolerance
VA970 Special design for wind turbine generators
VB022 Chamfer dimension of large outer ring side face 0,3 mm
VB026 Chamfer dimension of large inner ring side face 3 mm
VB061 Chamfer dimension of large inner ring side face 8 mm
VB134 Chamfer dimension of large inner ring side face 1 mm
VB406 Chamfer dimension of large inner ring side face 3 mm and of large outer ring side face 2 mm
VB481 Chamfer dimension of large inner ring side face 8,5 mm
VC025 Bearing with special wear-resistant raceways for applications in heavily contaminated environments
VC027 Modified internal geometry for increased permissible misalignment
VC068 Tighter geometrical tolerances and special heat treatment
VE141 One locating slot (notch) in the outer ring
VE174 One locating slot (notch) in the large side face of the outer ring, tighter geometrical tolerances
VE240 Bearing modified for greater axial displacement
VE447(E) Shaft washer with three equally-spaced threaded holes in one side face to accommodate hoisting tackle.
The E indicates that appropriate eye bolts are supplied with the bearing.
VE552(E) Outer ring with three equally-spaced threaded holes in one side face to accommodate lifting tackle.
The E indicates that appropriate eye bolts are supplied with the bearing.
VE553(E) Outer ring with three equally-spaced threaded holes in both side faces to accommodate lifting tackle.
The E indicates that appropriate eye bolts are supplied with the bearing.
VE632 Housing washer with three equally-spaced threaded holes in one side face to accommodate hoisting tackle
VG052 Single split PES (polyethersulfone) cage
VG114 Surface-hardened stamped steel cage
VG1561 Glass fibre reinforced PA46 cage, rolling element centred
VGS Inner ring with a pre-ground raceway and a machining allowance
VH Full complement of rollers (no cage), self-retaining
VL065 Zinc-coated inner ring bore and side faces
VL0241 Aluminium oxide coated external surfaces of outer ring
VL2071 Aluminium oxide coated external surfaces of inner ring
VP076 Shield on both sides
VP274 Contact seal made of NBR, on both sides (bearing with a standard inner ring)
VQ015 Inner ring with crowned raceway for increased permissible misalignment
VQ051 Modified internal geometry for increased permissible misalignment
VQ117 Special radial and axial run-out
VQ267 Tighter inner ring width tolerance to ± 0,025 mm
VQ424 Geometrical tolerances lower than C08
VQ492 Special inner ring width tolerance
VQ494 Reduced radial run-out
VQ495 CL7C with tighter or shifted tolerance range for the outside diameter
VQ506 Tighter inner ring width tolerance
VQ507 CL7C with tighter or shifted tolerance range for the outside diameter
VQ523 CL7C with tighter inner ring width tolerance and tighter or shifted tolerance range for the outside diameter
VQ601 Accuracy to ABMA tolerance class 0 (inch bearing)
VR521 Bearing supplied with measuring report
VT113 Grease with a lithium thickener of consistency 3 to the NLGI Scale for a temperature range –20 to +140 °C
VT143 Extreme pressure grease with a lithium thickener of consistency 2 to the NLGI Scale for a temperature range –20 to +110 °C (filled to 25 - 45%)
VT143 followed by B (filled to 45 - 60%)
VT143 followed by C (filled to 70 - 100%)
VT378 Food grade grease with an aluminium thickener of consistency 2 to the NLGI Scale for a temperature range –25 to +120 °C (normal fill grade)
VU001 Inner ring raceway with finish-grinding allowance
W
Without annular groove and lubrication hole(s) in outer ring
Modified ring width tolerance to +0,05/0 mm
Polymer ball bearing with components made of titanium
W20 Three lubrication holes in the outer ring
W26 Six lubrication holes in the inner ring
W33 Annular groove and three lubrication holes in the outer ring
W33X Annular groove and six lubrication holes in the outer ring
W513 Six lubrication holes in the inner ring and annular groove and three lubrication holes in the outer ring
W518 Six lubrication holes in inner ring and three lubrication holes in outer ring
W64 Solid Oil filling
W64F Solid Oil filling, Synthetic base oil type, NSF H1 approved for food applications
W77 Plugged W33 lubrication holes
WT Grease with a polyurea thickener of consistency 2 to 3 to the NLGI Scale for a temperature range –40 to +160 °C
X
Boundary dimensions not in accordance with ISO dimension series
Boundary dimensions changed to conform to ISO
Cylindrical (flat) profile of the outer ring running surface
Polymer ball bearing with components made of ceramic Si3N4
XA Cylindrical (flat) profile of the outer ring running surface (NUKR .. A or NUKRE .. A design cam follower)
Y Stamped brass cage, rolling element centred
Z
Combined needle roller bearing, factory greased thrust bearing with a cover without lubrication holes over the outside diameter
Shield on one side of the bearing
Polymer ball bearing with components made of ceramic Al2O3
2Z Shield on both sides of the bearing
.2ZL Lamellar seal on both sides
ZNR Shield on one side, snap ring groove in the outer ring, snap ring on the opposite side of the shield
2ZS Shield on both sides, held in place by a retaining ring
ZW Double row needle roller and cage assembly
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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