B

BL

F

HR

MF

MR

SP

R

SS

A, B, C, D, E,

F

A

A5

B

C

EA

Prefixes

Constructions and materials

Bearing with special dimensions, e.g. B 15

The maximum allowable number of steel balls compared to conventional deep groove ball bearings

Bearing with flange on the outer ring. For example, F684ZZ. Generally accepted.

For roller conic and ball radial. Increased load capacity, e.g. HR32210.

Miniature bearing metric series with a flange on the outer ring. For example, MF605. Generally accepted.

Angular contact ball bearing with a contact angle of 30 °. For example, 7010 A TR SUL P3. Generally accepted.

Angular contact ball bearing with a contact angle of 25 °. For example, 7010 A5 TR SUL P3.

Angular contact ball bearing with a contact angle of 40 °. For example, 7410 B EAT85 SU CNB. Generally accepted.

Angular contact ball bearing with a contact angle of 30 °. For example, 7010 A TR SUL P3. Generally accepted.

Heavy duty spherical roller bearing with extruded steel cage. For example, 22224EAE4.

Special sized metric miniature bearings. For example, MR126ZZ. Generally accepted.

Bearing with special dimensions, not ISO standardized. For example: SP10079 / 710; SP1687 / 770

Bearing without inner ring, e.g. RNU205

Bearing made of stainless steel, e.g. SS 6200 2RS C3. Applicable after miniature series, outer diameter over 30 mm.

These codes are used for a short time in new bearing designs, indicating minor internal changes. Affixed immediately after

the main designation.

CAM

C/CD

E

EA

J

U22

U32

U34

VS

E1, E2, E3,

E4

g

-H-

K30

KR

S

U

X

Spherical roller bearing with improved surface quality of bodies and raceways.

Modified NJ and NUP roller cylindrical roller bearings.

Vibration resistant cylindrical roller bearing.

Spherical roller bearing for vibrating screens, with increased radial clearance C3. For example, 22317 CAM-VS3.

An analogue of the designation W33 is a groove and lubrication holes on the inner ring for cylindrical roller and spherical

double row bearings. The figure depends on the dimensions of the product (currently all bearings use E4). For example, NN

3017 MB KR E2 CC1 P4 and 22230 CAM E4.

Spherical roller bearing with solid brass cage and floating guide ring. For example, 23156 CAM E4.

Spherical roller bearing with floating guide ring and extruded steel cage. For example, 23020 CD E4.

Reinforced construction. For example, NU 2212 E T C3.

Reinforced spherical roller bearing with pressed steel cage. For example, 22312 EA.

ISO tapered roller bearing. For example, HR 32215 J

Ball thrust bearing with spherical rings on the inside. For example, 53210U.

The bearing, the dimensions of which are brought in accordance with international standards. For example, 51226 X.

Product details are made of cemented steel. Additional numbers indicate which ones: g2 is only the outer, g3 is only the

inner, g4 is only the rolling bodies, g5 is the inner and outer ring, g6 is the outer ring and rolling bodies, g7 is the inner ring

and rolling bodies. For example, 22215CAgM.

Bearing made of stainless steel, e.g. 608-H-20T1XZZ. Applicable to miniature series.

Bearing with tapered bore taper 1:30. For example, 24030 CAM K30 E4.

Bearing with tapered bore but different from ISO (applicable for precision bearings)

Bearing with phosphated surface. For example, RS-5012D5E7NA S5 C3.

/..

RSR

2RSR

2RS

RS

RSN

RSNR

N

NR

NZ

V

VV

Z

ZN

ZNR

Bearing with seals on both sides. For example, 608 2RSR C3 PS2S (only for frame sizes with an inner diameter of less than 10

mm).

Bearing with seals on both sides. For example, 6206 2RS CM X63S. The seal code may include a number that indicates the

special material from which they are made. For example, 6205 2RS C3E PS2S

Single sealed bearing. For example, 6206 RS C3E

Bearing with one-way seal and snap ring groove on opposite side. For example, 6206 RSN.

Bearing with one-way seal and groove on the opposite side into which the snap ring is already mounted. For example, 6206

RSNR C3 PS2S.

Open bearing with snap ring groove. For example, 6207 N.

An open bearing with a snap ring groove already installed in it. For example, 6207 NR.

Bearing with protective metal washer and snap ring groove on the same side. For example, 6205NZ.

Bearing with one-side non-contact seal. For example, 6206 V.

Bearing with non-contact seals on both sides. For example, 6206 VV CM.

Bearing with a protective metal washer on one side. For example, 6205Z.

Bearing with a protective metal washer on one side and a snap ring groove on the opposite. For example, 6208ZN.

Bearing with a protective metal washer on one side and a groove with a snap ring on the opposite. For example, 6208ZNR.

Single sealed bearing. For example, 608 RSR C3 (only for sizes with an inner diameter of less than 10 mm).

Fractional designation of bearings, the landing size of which is not divided by 5 or more 480 mm. The right side indicates the

inner diameter. For example, 63/22 or 230/560.

Protective washers and seals, snap rings, grooves

ZR

ZZ

2ZR

M

MA1

MBR

MR

T..

T

T1X

TR

T85

TNG

TY

TYN

V

Bearing with two protective metal washers. For example, 6210 ZZ C3E.

For double row angular contact ball bearings - protective washers on both sides and the absence of a groove in the inner ring.

For example, 3210 B-2ZR TNG AR3N.

For double row angular contact ball bearings - a protective washer and the absence of a groove in the inner ring. For example,

3206 B ZR TNG.

Separator type

Massive brass cage centered on the outer ring. For example, 6316 M.

Massive brass window separator. For example, NJ 326 MA1.

Massive riveted brass cage centered on rolling elements. For example, NJ 310 MBR.

Massive brass cage centered on rolling elements. For example, NU 230 MR.

Separator made of polymeric material Polyamide 66. Additional reinforcement with fiberglass and other materials is encoded

with an alphanumeric code. For example, 6003 T1X.

For high precision deep groove ball bearings. Phenolic resin separator centered on the inner ring. For example, 6206 T.

For high precision deep groove ball bearings. Phenolic resin separator with additional fiberglass reinforcement centered on

the inner ring. For example, 6206 T1X.

For angular contact ball bearings of high precision (spindle). Phenolic resin separator centered on the inner ring. For example,

7012 C TR SULP4.

Separator made of fiberglass reinforced Polyamide 46. For example, 7210B EA T85 SU CNB.

A fiberglass separator reinforced with Polyamide 66. For example, 2206 E TNG.

For spindle bearings. Separator made of Polyamide 66, reinforced with fiberglass. For example, 7010 C TY SUL P4.

For spindle bearings. Separator made of Polyamide 46, with fiberglass reinforcement. For example, 7012 C TYN SUL P4.

Ball or roller bearing as a whole. For example, NCF 3020 V.

W

Y

C/CD

CAM

BG, BWGThe contact angle is 40 °. Universal duplex (tandem, face-to-face or back-to-back). For example, 7210 BG,

7208 BWG.

DB Twin bearings (duplex) according to the scheme back-to-back. For example, 7210C TYN DB L P4.

DBBSet of 4 bearings (quadroplex) according to the back-to-back pattern. For example, 7214 A5 TYN DBBL P4 +

KL14.

DBD Set of 3 bearings (triplex), combined (tandem / back-to-back). For example, 7010 A5 DBDM P4 + KL12.

DBTSet of 4 bearings (quadroplex) according to the tandem / back-to-back scheme. For example, 7212 A5 TYN

DBTM P5 + KLB.

DF A pair of bearings in a face-to-face duplex scheme. For example, HR 31309 J DF + KR CA72.

DFD Set of 3 bearings (triplex), combined (tandem / face-to-face). For example, 7312 B A5 DFD CA13.

DFF A set of 4 bearings (quadroplex) face-to-face. For example, 7912 C TYN DFFLP4 + KL18.

DFTSet of 4 bearings (quadroplex), combined (tandem / face-to-face). For example, 7012 C TYN DFT LP4 +

KL12.

DR Two bearings selected for uniform perception of radial loads. For example, NU 208 EM C3 DR.

DT A pair of bearings in a tandem configuration. For example, 7212 A TYN DT P4.

Extruded brass cage. For example, 6008 Y.

For spherical roller bearings (self-aligning). Floating guide ring. Pressed steel separator.

For spherical roller bearings (self-aligning). Floating guide ring. Massive brass cage.

For cylindrical roller bearings and angular contact ball bearings - a pressed steel cage. For example, NU205 W, 7208B W G.

Sets of ball and roller angular contact (spindle) bearings

DTD Set of 3 bearings (triplex) in tandem configuration. For example, 7006 C TYN DTD P4.

DTT A set of 4 bearings (quadroplex) in tandem configuration. For example, 7012 A5 TYN DTT P5.

L, M, H Preload

DUD Kit containing 3 universal bearings.

QU Kit containing 4 universal bearings.

DUH A pair of universal spindle bearings. Strong preload. For example, 7210 CTYN DUH P4.

DUL A pair of universal spindle bearings. Easy preload. For example, 7906 A5 TYN DUL P4.

DUM A pair of universal spindle bearings. The average preload. For example, 7214 A5 TYN DUM P4.

SUH Universal spindle bearing for any picking with strong preload. For example, 7212 A5 TYN SUH P5.

SUL Universal spindle bearing for any picking with light preload. For example, 7909 A5 TR SUL P5.

SUM A universal spindle bearing for any picking with medium preload. For example, 7006 C TR SUM P5.

+KL (R) A set of bearings with ring washers between the outer and inner rings.

+KR A set of bearings with ring washers between the outer rings. For example, HR31309 JDF + KR CA90.

С1

С2

С3

С4

С5

Radial clearance is greater than normal. For example, 22310 CAM C3.

Internal clearances

Radial clearance greater than C3. For example, 22,230 CAM C4.

Radial clearance greater than C4. For example, NU 2226 EM C5.

The smallest radial clearance, less than C2. For example, NNU 4922 MB KR E44 CC1 P4

Radial clearance is less than normal (which is not indicated). For example, 6307 C2.

CA..

CC..

CE

CG..

CM

CP..

CT

MC1

MC2

MC3

MC4

MC5

MC6

CM

CT

Radial clearance less than MC3 Example: 623 MC2

Radial clearance corresponds to reduced normal clearance according to ISO5753. Example: 686 MC3

Radial clearance greater than MC3. Example: 625 2RSR MC4 E X64S

Radial clearance greater than MC4. Example: 606 ZZ MC5 E X64K

Radial clearance greater than MC5. Example: 626 T1X 2RSR MC6 E X64S

Special radial clearance. The numbers indicate the value of the gap in microns. For example, 6202 T1X 2RS CG14E.

Internal clearance of deep groove ball bearings with an inner diameter of less than 10 mm

Special axial clearance. Numbers instead of dots indicate the average value of the gap class in microns. For example, HR

31306J DF + KR CA73.

Radial clearance in cylindrical roller bearings with non-interchangeable parts. The number indicates the clearance class. For

example, NU 210E T7 CC3.

Normal class radial clearance for the lowest noise level. For example, 6006 CE.

For deep groove ball bearings and roller bearings - reduced clearance within the normal class. Low noise. For example, 6210

CM.

A pair of preloaded bearings. The numbers indicate its value in microns. For example, 7212 B W DB CP5.

Reduced radial clearance for cylindrical roller bearings, but within the normal class. Low noise modification, removable rings.

For example, NU 210 ET7 CT.

Radial clearance is less than MC2. Example: 624 MC1

Low noise requirement for deep groove ball bearings and cylindrical roller bearings, including reduced radial clearance

tolerances; cylindrical roller bearings - non-interchangeable rings. Example: 6214 CM

Low noise requirement for cylindrical roller bearings, including reduced radial clearance tolerances; interchangeable rings.

Example: NU 312 E T CT

Noise level

E

ER

EF

P2

P2A

P4

P4A

P5

P6

S11

X26

X28

X29

EA3

EA5

EA6

Accuracy classes, heat resistance

Material heat treatment

Lubricants

Highest accuracy class according to ISO 492. For example, 7004 C TR SUL P2.

Special tolerance for ball thrust bearings, excluding outer diameter.

Special tolerance for ball thrust bearings, excluding outer diameter.

Accuracy class lower than P4, but higher than P6.

The accuracy class is lower than P5, but higher than normal or P0 (which is not indicated in the numbers).

Thermal stabilization for operating temperatures up to 200 ° C. Only applicable for spherical roller bearings. Example: 23036

CAM E4 C3 S11

Thermal stabilization for operating temperatures up to 150 ° C. Example: 6304 C4 X26"

Low noise bearing (affixed after designating radial clearance). For example, 6304 C3 E.

Low noise modification. More stringent requirements than E, CM, CT. For example, 626 ZZ CM3 ER P5 X64L..

Low noise modification. The most stringent requirements for noise emitted during operation. For example, 608 ZZ1 MC3 EF

P4 X64L.

Accuracy class lower than P3, but higher than P5.

Thermal stabilization for operating temperatures up to 200 ° C. Example: NU 210 C3 X28"

Thermal stabilization for operating temperatures up to 250 ° C. Example: NU 2236 M C4 X29"

NSK Grease EA3 (Extra Class)

NSK Grease EA5 (Extra Class)

NSK Grease EA6 (Extra Class)

EA7

ENS

NS7

NSC

PS2

X62

X63

X64

X65

X73

X74

K

L

S

M

F

Grease quantity

NSK Grease EA7 (Extra Class)

NSK Grease ENS (Extra Class)

KYODO YUSHI Multemp SRL

NSK Grease NSC (Extra Class)

KYODO YUSHI Multemp PS3

Lubricant filled 85-90% of the internal space of the bearing.

XIN SHARTON 7701-L4

Less than 20% of the cavity is filled with lubricant.

Lubricant filled 20-30% of the internal space of the bearing.

Lubricant filled 30-50% of the internal space of the bearing. The standard number of OID.

Lubricant filled 55-70% of the internal space of the bearing.

XIN SHARTON 6601-L2

XIN SHARTON 6601-L3

XIN SHARTON 6601-L4 (Standard OID Grease)

XIN SHARTON 6601-L6

XIN SHARTON 7701-L3