FAFNIR, TORRINTON company bearing make up code

Source: China Bearing Network Time: 2017-12-02

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FAFNIR company bearing make up code (ball bearing)
1. Preamble
A- stainless steel
B- Torque tube type
C- cadmium plating
D- double column
E- inch hole
F- with rib outer ring
FL- åŠ©ç‰‡
G- self-lubricating
H- tight cooperation
J- loose cooperation
K- single column
L- internal active centering
M- Fine bearing produced according to ABEC-3 skill conditions
2M- Angular touch ball bearing produced according to ABEC-3;15 skill conditions
3M- Angular touch ball bearing produced according to ABEC-3;25 skill conditions
MM- Superfine bearing produced under ABEC-7 skill conditions
2MM- Angular touch ball bearing produced according to ABEC-7; 15 skill conditions
3MM- Angular touch ball bearing produced according to ABEC-7;25 skill conditions
2MMF- angular contact ball bearing with ribs produced according to ABEC-7; 15 skill conditions
3MMF- Angular contact ball bearing with ribs produced according to ABEC-7;25 skill conditions
MMV- High-precision bearing produced under ABEC-7 skill conditions
2MMV- High-precision bearing produced between ABEC-7 and ABEC-9; with a touch angle of 15 degrees
MV- modified ABEC-7 bearing
3MMV- High-precision bearing between ABEC-7 and ABEC-9; with a touch angle of 25 degrees
MMX- Ultra-fine grade bearings produced according to ABEC-9 skill conditions
P- loose cooperation
RA- side inner ring widening
S- inch small (aluminum alloy)
T- tight cooperation
V- Fine-grade bearings produced according to ABEC-5 skill conditions
W- wide single row (the inner and outer rings are the same width)
WIR- single row; inner ring widening
YA; ER- with thread locking device
2. Post code
A- original maximum load type
B- outer ring outer diameter is spherical
BR- Bronze cage
C1.2.3, etc. - indicates internal layout changes; total scale remains unchanged
CR- composition cage (non-metal)
C- one dust cover
DD- two sides with dust cover
FT- full ball type
G- with stop groove
H- without ball gap type
K- Improves no ball gap type
L- single mechanical seal
LL- double-sided mechanical seal
MAR- Aluminum Solid Holder
MBR- bronze solid cage
MSR- Steel Solid Holder
P- single side seal
PP- double-sided seal
PRA. B. C. D- Variant plastic cage (changeable layout or data)
Example: PRB-Injected Nylon Cage
PRC-reinforced injection molded nylon cage
PRD-specific high performance data
S- external active heart-aligning type
SMBR- Ferrosilicon Bronze Solid Holder
T-bearing single-sided felt seal
W- radial cage bearing without cage
WI- angular contact ball bearing with low ribs on the outer ring
WO- inner ring with low rib angle contact ball bearing
WN- inner; outer ring with angular contact ball bearing with low ribs Note: When there is preload; add post code to indicate
DUX- universal paired device ultra-light preload fine bearing
DUL- universal paired device light preload fine bearing
Preloaded fine bearings in DUM- universal paired devices
DUH-universal paired device heavy preload fine bearing
TUX- Universal Triple Ultralight Preload Fine Bearing
TUL- Universal Triple Light Preload Fine Bearing
TUM-GM triple preloaded fine bearing
TUH- universal triple preloaded fine bearing
QUX- Universal Quad Ultralight Preload Fine Bearing
QUL- Universal Quad Light Preload Fine Bearing
QUM- Universal Quadruple Medium Preload Fine Bearing
QUH- Universal Quadruple Heavy Preload Fine Bearing
TORRINGTON spherical roller bearing make up code here only analyzes the rear code of spherical roller bearing (1) cage and its data
BR- Bronze cage
CJ- steel cage (without ribs)
VCJ- nylon cage
VJ- steel cage (with ribs)
(2) Internal layout
W33- Oil groove and 3 oil holes on the outer ring (3) External layout and dimensions
K- tapered hole; taper is 1:12
(4) Oil gap
C2- less than the C0 group oil gap
C0- specification group oil gap
C3- is greater than the C0 group oil gap
C4- is greater than the C3 group oil gap
C5- is larger than the C4 group oil gap
C08- inside; outer ring has high rotation accuracy
TORRINGTON company needle roller bearing make up code
1. The stamped ferrule needle bearing is in the code of the stamped ferrule bearing; the front code indicates that the bearing is a metric or imperial nominal scale and its primary layout characteristics.
For example; the metric nominal-size bearing is indicated by the pre-code F. The absence of the letter F in the pre-code indicates the nominal bearing of the inch.
Most standard bearings are available with full needles; they also have cages. When using cages; bearings are indicated by the pre-code J.
Many standard bearings can use two different sections. Large sections are indicated by the preamble H. No letter H indicates a small section.
Other preambles indicating the primary layout characteristics are:
M- blind hole type
P- small through hole; with cage
T- single side seal
TT- double-sided seal
G-super fine in addition to the above; there are some other letter codes indicating special variants
2. The preamble in the centripetal needle and cage assembly component designation indicates that the component is a metric or imperial nominal scale and its primary layout characteristics. For example; components with a metric nominal scale are indicated by a preamble F; British nominal scale components.
There are two primary layouts of needle roller and cage assemblies; each of which is manufactured in metric or imperial nominal dimensions. FWJ (metric) and WJ (imperial) bearings are usually made with large diameter needles. FWJC (metric) and WJC ( Inch) bearings usually use small diameter needles.
3. Heavy-duty needle bearing heavy-duty needle bearing code in the front code indicates that the bearing is made in metric or inch nominal scale.
The metric nominal scale bearing is indicated by the pre-coded RNA (light series) or FHJ (heavy series). The nominal nominal bearing of the inch is indicated by the pre-code HJ.
When the bearing has a seal; can be indicated by a post-code. The RS in the post-code indicates a one-sided seal; 2RS indicates a double-sided seal.
In the local area where the shaft cannot be used as the inner raceway; the inner ring can be used for both the metric and imperial series. The inner ring is indicated by the front code IR.
4. The type of support roller needle bearing support roller; special layout features and dimensions are indicated by the code of the front code followed by a horizontal line and a rear number.
The pre-code indicates the type of support roller. When the requirement indicates a special layout feature; it is indicated by an additional pre-code; the number after the pre-code indicates the scale of the support roller.
The basic types of support rollers are as follows:
CR- general stud type; full needle
YCR-U clip type; when full needle demand is used for layout feature letter code; the following order should be followed
S-sealing; inner thrust piece; external surface oxidation treatment
Hex wrench socket in B- stud head
C- spherical outer ring
E- head stud (for CR type)
5. The aircraft frame needle roller bearing is in most bearing codes; the letter code in front of the first digit (or a group of numbers) indicates that the bearing type letter code NBC indicates the aircraft frame bearing with single row needle roller. NBC type bearing necessary device In the support box.
The letter code NBE indicates the active self-aligning aircraft frame needle roller bearing with single row needle roller; the letter code NBK indicates the same as the NBE type but with double row needle roller. The NBE and NBK bearings are necessary. Support in the axle box.
4. The letter code NBF indicates that the aircraft frame with a single row of needle rollers supports the roller bearing.
The letter code ATF indicates a single row needle roller; the inner thrust piece and the spherical outer diameter of the aircraft frame seal support roller bearing.
The letter code NBL indicates that the aircraft frame with double row needle roller supports the roller bearing.
The letter code ATL indicates that the double-row needle roller and the inner thrust piece of the aircraft frame seal support roller bearing.
6. Thrust needle roller and cage assembly
TORRINGTON thrust needle roller and cage assembly; pre-coded in the thrust cylindrical roller and cage assembly and their corresponding thrust piece designation; indicating nominal or metric nominal production; and primary layout features.
For example; metric nominal scale roller and cage assemblies or thrust pieces; indicated by the preamble F; no letter F indicates the nominal nominal scale.
FNT and FNTA are good predecessors for the metric nominal scale thrust needle roller and cage assemblies; NTA is the perfect predecessor for the British nominal scale components.
NTH indicates thrust cylindrical roller and cage assembly; large diameter rollers can be used to obtain higher additional loads. These assemblies are made to imperial scale.
The thrust gauges of the nominal scale of the British system are indicated by the pre-code TR; the rear can be added with A; B; C and other letters indicating the thickness of the thrust. The ultra-thin thrust piece of the nominal scale of the British system is indicated by the pre-code TRA. The front code FTA and FTRA separates the metric nominal scale thrust piece with a thickness of 0. 08 MM and 1.0 MM. The metric nominal scale thrust piece with the smallest useful thickness is indicated by the code FTA. In addition, there are other thickness series of metric thrust pieces; such as LS type.
Most thrust pieces are guided by inner diameter; however, some thrust pieces are depicted as outer diameter guide; such thrust pieces are indicated by the letter D; placed after the thickness code. For example; code TRJD indicates thickness J; guided by outer diameter Inch nominal scale thrust piece.
The code NTHA indicates that the thrust cylindrical roller bearing consists of an NTH assembly; a TRI or TRJ inner diameter guided thrust piece and a TRID or TRJD outer diameter guided thrust piece.

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