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% |
|
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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