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Front and rear code of Swedish SKF bearing (1)
Source: China Bearing Network Time: 2017-10-01
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B The touch angle is 40 degrees.
The CC touch angle is 12 degrees.
The CD touch angle is 15 degrees.
BE BE bearing with a touch angle of 40 degrees; steel ball is enlarged; glass fiber reinforced nylon 6.6 cage.
Double row angular contact ball bearing A Specification of bearing with outer diameter less than or equal to 90 mm; no ball gap; glass fiber reinforced nylon 6. 6 cage.
E bearing has a ball-filling port on one side; it can hold more steel balls; therefore, it has high radial and axial bearing capacity.
Spherical roller bearings CAC; ECAC; CA; ECA These are depicted for large-scale bearings; the rollers are symmetrical.
CC; C; EC such bearing roller is symmetrical; the inner ring has no ribs.
E is SKF's selection of the latest specifications. The outer ring of the E-type bearing has an oil groove and three oil holes; then the rear code must be added with W; to show the difference.
Cylindrical roller bearing B bearing uses externally treated roller (full complement roller bearing).
B4 bearing ring outer surface and roller appearance are treated (full complement roller bearing).
The internal shape of the EC bearing has been improved; the bearing capacity is high; the rib and roller end face have excellent touch and smooth conditions; and can accept high axial load.
.2) Externally depicted CA; CB; CC universal matched single-row angular touch ball bearing; optional (series; face-to-face or back-to-back) pairing device. When back-to-back or face-to-face; axial internal space and normal value ratio: CA); normal (CB); larger (CC).
-2F Spherical ball bearings with dust ring on both sides.
-2FF outer spherical ball bearing with combined dust ring on both sides.
G Universal pairing single row angular contact ball bearings. When placed face to face or back to back; there is a certain preload of the device in the bearing.
GA face to face; when placed back to back; there is a lighter preload in the bearing.
GB face to face; when placed back to back; medium preload in the bearing.
GC face to face; when placed back to back; heavy preload in the bearing.
K tapered hole; taper 1:12.
K30 tapered hole; taper 1:30.
-LS bearing has a touch seal on one side; there is no seal groove on the inner ring.
-2LS bearing has LS seal on both sides.
N bearing outer ring has a stop groove.
The NR bearing has a retaining groove on the outer ring and a snap ring.
There are two diametrically opposite notches on the N2 outer ring chamfer.
PP bearing (support roller bearing; cam follower bearing) has a touch seal on both sides.
The RS bearing (needle bearing) has a synthetic rubber or polyurethane touch seal on one side.
-RS1 bearing has a lining steel synthetic rubber touch seal on one side.
-2RS1 bearing has RS1 seal on both sides.
-2RS bearing (needle bearing) has RS seal on both sides.
-RZ bearing has a low-conflict seal on one side of the steel-lined synthetic rubber.
-2RZ bearing has RZ seal on both sides.
X 1. The fundamental scale has been revised to fit the ISO specification, 2. Cylindrical rolling surface (support roller bearing; cam follower bearing).
Z bearing has a dust cover on one side (non-conflicting seal).
-2Z bearing has a dust cover on both sides.
-ZN bearing has a dust cover on one side; there is a stop groove on the outer ring on the other side.
-2ZN bearing has a dust cover on both sides; the outer ring has a stop groove.
-2NR with -ZN; and with a snap ring.
-2ZNR with -2ZN; with a snap ring.
.3) The cage is used to indicate the guiding method of the cage in the bearing; the letter A or BA may be added after the rear code of the cage to indicate that the cage is guided by the outer ring, and B indicates that the cage is guided by the inner ring. Guided by the roll body.
F steel or a unique cast iron solid cage.
J steel plate stamping forming cage.
M light alloy solid cage.
MP brass solid cage.
P glass fiber nylon 6. 6 mold injection cage.
TN engineering plastic mold holder.
Y copper plate stamping forming cage.
V full roller bearing (without cage).
VH Full-roller bearing (cylindrical roller bearing) consisting of non-displacement roller assemblies.
.4) Other characteristics 1) Public service level / CLN is equivalent to ISO public service level 6X; used for metric tapered roller bearings (width reduction is common).
/CL0 is equivalent to ISO0 level public service; used for inch tapered roller bearings.
/CL3 is equivalent to ISO3 level public service; used for inch tapered roller bearings.
/CL7A tapered roller bearings that meet the specifications of the differential bearing.
/CL7C fits the differential bearing with a uniquely standardized tapered roller bearing.
/P4 scale and rotation accuracy meet ISO4 level public service (than P5 accuracy).
The /P4A scale accuracy is in line with ISO4 level public service; the rotation accuracy is equivalent to the AFBMA specification ABEC9.
/P5 scale rotation accuracy meets ISO5 level public service (accuracy is higher than P6).
The /PA9A scale and rotation accuracy are equivalent to the AFBMA specification ABEC9.
The /PA9B scale accuracy is equivalent to the AFBMA specification ABEC9; the rotation accuracy is higher than PA9A.
The /SP scale accuracy is about P5; the rotation accuracy is about P4.
/UP scale accuracy is about P4; rotation accuracy is higher than P4.
2) Bearing clearance / C1 clearance fits the standard group of rules; the clearance is less than 2 groups.
The /C2 clearance fits the two groups of the specification rules; the clearance is less than 0.
/C0 Clearance fits the 0 group of the specification rules; the code is omitted; does not indicate.
The /C3 clearance fits the three groups of the specification rules; the clearance is greater than zero.
The /C4 clearance fits the 4 groups of the specification rules; the clearance is greater than 3 groups.
/C5 The clearance fits the 5 groups of the specification rules; the clearance is greater than 4 groups.
When the clearance code is combined with the bearing official code P4; P5 or P6; the clearance code C can be omitted.
Example: P6+C2=P62
3) Unique skill needs.
/Q Best internal layout and appearance roughness (for tapered roller bearings).
The /Q66 oscillation level is less than the general specification; the oscillation peak is less than the general specification.
/QE5 fits the unique specification of the motor; the scale and rotation accuracy is up to P6. Very low noise.
/QE6 fits the specification of the motor; low noise.
Article Keywords: SKF Bearing
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