GLOSSARY

Suffix

Whether ball bearings, deep groove ball bearings or housing bearings - many rolling bearings are defined in more detail using suffixes. These designations are standardized according to DIN 623.

We have compiled the lists to the best of our knowledge! - There is no guarantee of correctness. Therefore, you should research on the relevant manufacturer's website if necessary!

A

Change of internal construction

A

Single row radial ball bearings with high load rating

A

Single row angular contact ball bearings, polyamide cage

A

Double row radial ball bearings, without groove, polyamide cage

A

Double row angular contact ball bearings, without groove, polyamide cage

A

V-ring seal version A for SNC bearings (optionally with FS seal)

AD

Contact angle 25°

A1

Demountable

B

Standard version of spherical roller bearings

B

Contact angle 40° for angular contact ball bearings

B

32° for 2-row angular contact ball bearings

B

40° for 1-row angular contact ball bearings

B

20° for tapered roller bearings

BG

Single row angular contact ball bearings for universal pairing without preload

B3, B5, B7

Precision according to ABEC 3, 5 or 7 standards

C

Contact angle 15° for angular contact ball bearings

C

Enlarged contact angle for tapered roller bearings

C9, C0, C1

High accuracy game

C2

Internal clearance smaller than normal

C3

Internal clearance greater than normal

C4

Internal clearance greater than C3

C5

Internal clearance greater than C4

CMxx

Average internal clearance in microns for ball bearings from diameter 10 to 50 mm

CM09

Special clearance, between 5 and 13 μm

CM13

Special clearance, between 9 and 17 μm

CM17

Special clearance between 13 and 21 μm

CM21

Special clearance between 17 and 25 μm

CM25

Special clearance, between 21 and 29 μm

CM30

Special clearance between 25 and 35 μm

CM35

Special clearance, between 30 and 40 μm

CM40

Special clearance between 35 and 45 μm

CM45

Special clearance, between 40 and 50 μm

CM50

Special clearance between 45 and 55 μm

CSxx

Average bearing clearance in microns (1 micron = 1μm = 0.001 mm)

CT1

Low temperature storage -60 °C

CxNA

Reduced clearance areas (mean internal clearance however identical), grouped rings

CNL, CNS

Internal clearance for precision miniature bearings

C/C12

Interior design index for tapered roller bearings

CC

Closed stainless steel lock for housing bearings

CO

Open stainless-steel lock for housing bearings

D

Enlarged contact angle for tapered roller bearings

D

Lubrication openings (without grooves)

D

High-precision angular contact ball bearings with lubrication

DB

O Arrangement

DF

X Arrangement

D**

SNR lubricating greases

DS

Double lip seal for SNC bearings

DT

T Arrangement

D0

Groove and lubrication openings not available (if standard)

D1

Groove and lubrication openings in the outer ring

D2

D1 + anti-rotation ball on outer diameter for bearing inserts

E

Increased load rating for cylindrical roller bearings and spherical roller bearings

EA

Spherical roller bearings with increased load rating and with a sheet steel cage

EM

Spherical roller bearings with increased load rating and with a solid cage

EE/2RS

Double-sided seal

EC

Sealing for SNC bearings

En

Special crowning of the rollers

F

Full-walled bearing without openings, e.g. SN520F

F1

Full-walled bearing with openings e.g. UCP320F1

F2

Bearings without mounting holes e.g. UCP322F2

FD

Food grade grease

FS

Felt strip seal for SNC bearings

FT150

Sealed bearings for high temperatures up to +150 °C

FT150ZZ

Protected bearings for high temperatures up to +150 °C

F1

Solid steel cage

F3

Solid cage made of parting steel

F600

Bearings for high temperatures for tunnel kiln cars

F604

Bearings for high temperatures for lubricated and protected tunnel kiln cars

F800

Spherical roller bearings for high load capacity for applications with vibration transmissions

-G

Inner ring + rollers (+ cage) for tapered roller bearings

#G

Outer ring only for tapered roller bearings

G

Universal design

G

Disassembly sleeves - modified thread - conformity according to ISO 2982-1

G

Fixed bearing without ring lock e.g. SD3130G

G(n)

Bearings with special fastening openings (n = 1,2,3…). E.g. UCHB204G6

GD2

2 universal bearings in a single housing

GL GN GM GH

Pretension (light, normal, medium, high)

G1

Solid brass cage

G2

Relubrication system for bearing inserts

G14

Polyamide cage

G15

Glass fiber reinforced polyamide cage

H

Clamping sleeves with oil injection device (e.g. AH24T48H)

HT

Special interior design to accommodate axial loads on cylindrical roller bearings

HT2

High temperature storage +200 °C

HT200

Sealed bearings for high temperatures up to +200 °C

HT200ZZ

Protected bearings for high temperatures up to +200 °C

HVZZ

Protected bearings for high speeds up to 700,000 N.Dm

J

Sheet steel cage

K

Conical bore 1/12

K30

Conical bore 1/30

-L

NUP without press plate

#L

Press plate for NUP

L1

Flanged bearing with grease nipple and oil drain opening, e.g. SN515L1Z

L5

Flange bearing with opening for grease nipple and oil drain opening

LA

Labyrinth seal for SNC bearings

LLJ

Bearings with double lip seals and low torque

LLS

High torque triple lip seal bearings

LT

Sealed bearings for low temperatures down to -40 °C

LTZZ

Protected bearings for low temperatures down to -60 °C

LU, LLU

Contact nitrile seal (-20 to +120 °C)

LUA, LLUA

Contacting polyacrylic seal (-15 to +150 °C)

LUA1, LLUA1

Contacting fluorinated elastomer seal (-30 to +230 °C)

LUA2, LLUA2

Contacting silicone seal (-60 to +200 °C)

LUA4, LLUA4

Contacting high nitrile seal (-20 to +140 °C)

LUAX12, LLUAX12

Frictional, high polyacrylic seal (15 to +175°C)

LB, LLB

Non-contact nitrile seal (-25 to +120 °C)

LBA, LLBA

Non-contacting polyacrylic seal (-10 to +150 °C)

LBA1, LLBA1

Non-contact sealing made of fluoroelastomer (-30 to +200 °C)

LBA2, LLBA2

Non-contact silicone seal (-100 to +200 °C)

LH, LLH

Contacting nitrile sealing low torque (-25 to +120 °C)

LHA, LLHA

Contact polyacrylic sealing low torque (-10 to +150 °C)

LHA1, LLHA1

Fluorinated contact elastomer seal with low torque (-30 to +200 °C)

LHA2, LLHA2

Contact silicone seal with low torque (-100 to +200 °C)

LHA4, LLHA4

Contact high nitrile seal with low torque (-20 to +130 °C)

LHAX12, LLHAX12

Contact high polyacrylic seal with low torque (-10 to +150 °C)

LP03

Durable standard grease (-20 to +80 °C)

LP05

Durable high temperature grease (-20 to +120 °C)

LP06

Durable food-compatible lubricating grease -10 to +100 degree (permanent 80 °C)

LP08

Durable high-temperature lubricating grease for needles (-20 to +120 °C)

LX

Seal with special seal

L1

Solid cage made of riveted brass

L3

Triple lip seal for bearing inserts

L417

Lubricating grease: Kyodo Yushi / E5 (-30 to +180 °C)

L453

Lubricating grease: Klüber / Asonic HQ72-102 (-40 to +180 °C)

L627

Lubricating grease: Exxon / Polyrex EM / Polyree (-25 to +170 °C)

M

solid cage, axially aligned with the rolling elements

-N

Outer ring + rollers (+ cage) for cylindrical roller bearings

#N

Inner ring only for cylindrical roller bearings

N

Groove for lock ring on the outer ring

N

Steel bearing e.g. P315N

N1

Cast iron bearings GS. E.g. P315N1

NR

Groove and lock ring on the outer ring

NRS

Groove and lock ring on the opposite side (contrast to the standard)

N2

Retaining groove

PM

Special precision bearings for electric motors

P42

Precision grade JIS 4 for the dimensions and JIS 2 for runout

P63E

Precision P6 and air C3 / DIN standard electric motors

P6

Precision class JIS 6

P5

Precision class JIS 5

P4

Precision class JIS 4 / BAS 4 for tapered rollers

PK

Precision class K for tapered rollers, series J

PXn

Special precision with development index

QD

Filling with grease: from 5.0 to 10.0%

QE

Filling with grease: from 7.5 to 12.5%

QF

Filling with grease: from 10.0 to 15.0%

QG

Filling with grease: from 12.5 to 17.5%

QH

Filling with grease: from 15.0 to 20.0%

QJ

Filling with grease: from 17.5 to 22.5%

QK

Filling with grease: from 20.0 to 25.0%

QL

Filling with grease: from 22.5 to 27.5%

QM

Filling with grease: from 25.0 to 30.0%

QP

Filling with grease: from 27.5 to 32.5%

QQ

Filling with grease: from 30.0 to 40.0%

QR

Filling with grease: from 35.0 to 45.0%

QS

Filling with grease: from 40.0 to 50.0%

QT

Filling with grease: over 50%

S

Round outer diameter

Snn

Special control (S20: Railroad / S30: wind energy)

ST

Changed interior design (low torque)

STVn

Changed interior design (n = 1, 2, 3 ...) (low torque)

SV

V-ring seal complete for SNC bearings

TA

Taconite seal for SNC bearings

TKBAnnnn

Special cross brace. Nnnn: order number

TKZnnnn

Special cross brace. Nnnn: order number

TKBNnnnn

Special cross brace. Nnnn: order number

T1

Cage made of fabric with Bakelite coating

T2

Cage made from plastic, nylon, or Teflon

T2X

Special polyamide cage for tight ball bearings

T2X

Polyamide cage 4.6 for cylindrical roller bearings

T6

Cage peek for NN camp

T04

Bearing inserts for operating temperature up to - 40 °C

T20

Bearing inserts for operating temperature up to + 200 °C

U

Reinforced version for tapered roller bearings

UA

Spherical roller bearings with high load capacity for vibration gear applications

UP

Ultra-high precision

V

Interior design for spherical roller bearings

V

Cylindrical roller bearings without cage

Vn

Special stock: summarizes other suffixes (n = 1, 2, 3 ...)

VS1, VS2

Special tolerance for screen bearings

W3

Bearing with clamping screw type nozzle needle

W5

Bearing with clamping screw type nozzle needle, different from W3

W6

Bearing with clamping screw type nozzle needle, different from W5

W33

Groove and lubrication holes in outer ring

Xn

Special bevel n: 1.2 ...

Y

Sheet brass cage for ball bearings with a small cross-section

Z

Flange bearing with rubber seal type Z

Z

Protective cover on one side

Z2

Flange bearing with felt strip seal

ZZ

Two-sided protective cover

ZA, ZZA

Removable protective cover

Z1, ZZ1

Stainless steel protective cover

2AS

Grease: Shell / Alvania Grease S2 (-25 to +120 °C)

3AS

Grease: Shell / Alvania Grease S3 (-25 to +135 °C)

-3, -2, -0

Precisions in accordance with the standards AFBMA for conical rollers in size inches

5C

Lubricating grease: Chevron / SRI-2 (-29 to +177 °C)

5K

Lubricating grease: Kyodo Yushi / Multemp SRL (-40 to +150 °C)

5S

Lubricating grease: Shell / Aero Shell Grease 7 (-73 to +149 °C)

6K

Lubricating grease: Klüber / Isoflex Super LDS 18 (-60 to +130 °C)

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