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Bearing seal, dust cover, external shape change code
Source: Bearing network time: 2014-08-09
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K30: tapered bore bearing; taper 1:30. Example: 24122 K30
R: The bearing outer ring has a stop rib (flange outer ring) is not suitable for radial ball bearings with an inner diameter of less than 10mm. Example 30307R
N: There is a stop groove on the outer ring of the bearing. Example: 6210N
NR: There is a stop groove on the outer ring of the bearing; with a snap ring. Example: 6210 NR
-RS: One side of the bearing with a skeleton rubber seal (touch type). Example: 6210-RS
-2RS: bearing rubber seal on both sides of the bearing (touch type). Example: 6210-2RS. (Note: NSK bearing touch seal indicates DDU)
-RZ: One side of the bearing with a skeleton rubber seal (non-touch type). Example: 6210-RZ
-2RZ: bearing rubber seal on both sides of the bearing (non-touch type). Example: 6210-2RZ
-Z: The bearing has a dust cover on one side. Example: 6210-Z
-2Z: The bearing has a dust cover on both sides. Example: 6210-2Z. (Note: NSK indicates that the method is ZZ)
-RSZ: One side of the bearing has a skeleton rubber seal (touch type) and one side with a dust cover. Example: 6210-RSZ
-RZZ: One side of the bearing has a skeleton rubber seal (non-touch type) and one side with a dust cover. Example: 6210-RZZ
-ZN: One side of the bearing has a dust cover; the other side has a stop groove. Example: 6210-ZN
-ZNR: One side of the bearing has a dust cover; the other side has a retaining groove with a snap ring. Example: 6210-ZNR
-ZNB: The bearing has a dust cover on one side; the outer ring on the same side has a stop groove. Example: 6210-ZNB
-2ZN: bearing has dust cover on both sides; outer ring has stop groove. Example: 6210-2ZN
-U: Thrust ball bearing; with spherical washer.
-FS: The bearing is sealed with a felt ring on one side. Example: 6203-FS
-2FS: The bearing is sealed on both sides with a felt ring. Example: 6206-2FSWB
-LS: One side of the bearing with a skeleton rubber seal (touch type, ferrule is not grooved)
-2LS: Bearing rubber seal on both sides of the bearing (touch type, ferrule is not grooved). Example: NNF 5012-2LSNV
PP: Bearings with soft rubber seals on both sides. Example: NATR 8PP
-2K: double row tapered bore bearing; taper 1:12
D
Double row angular touch ball bearing; double inner ring; touch angle is 45°
Double row tapered roller bearing; no inner spacer; end face not repaired DC: double row angular touch ball bearing; double outer ring. Example: 3924-2KDC
D1: double row tapered roller bearing; no inner spacer; end face grinding DH: one-way thrust bearing with two races DS: one-way thrust bearing with two shaft rings N1: bearing outer ring has a positioning groove Port N2: There are two or more symmetric positioning notches on the outer ring of the bearing. N4: N+N2 The positioning notch and the stop groove are not on the same side. N6: N+N2 The positioning notch and the stop groove are on the same side P: Spherical roller bearing PR with double outer ring: same as P; spacer ring between two outer rings
The outer surface of the bearing is spherical (the spherical ball bearing is outside)
Adjustable clearance (needle bearing)
WB: wide inner ring bearing (double-sided width), WB1--single-sided width WC: wide outer ring bearing SC: with outer cover radial bearing X: roller needle bearing outer ring outer cylindrical surface Z: with dust cover Needle roller combination bearing. Example: NK 25 Z
ZH: Thrust bearing; seat with dust cover ZS: thrust bearing; shaft ring with dust cover
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