Identification and Suffix Symbols of INA |
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A, B, C | | The meaning of the symbol is not defined in detail.
These are used as required for the designation of special features of the internal design or outer shape.
Their use is generally limited in time, in order to avoid confusionduring a transitional period.
In some cases, they are also used for the permanent designation of bearings and parts of the same type and external dimensions, but with different internal design. | |
Current abbreviations for -A | | NUKR, PWKR, PWKRE-2RS with -A means: with internal hexagonal drive and optimised profile. The hexagonal drive was previously designated -SK, but without an optimised profile! | |
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AS1 | Version | Lubrication hole in outer ring | |
IS1 | | Lubrication hole in inner ring | |
TN | | Plastic cage | |
C3 | | Radial clearance higher than normal | |
P5 | | Tolerance class: bearing with specially high dimensional and running accuracy | |
EGS | | Inner ring with torsion-free race (for grinding seals) | |
VGS | | Inner ring race with processing additive; The race is pre-ground. Values for diameter FVGS | |
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G2 | Sorting | Standard quality class of the needle rollers | |
SORT.. | | Types of the needle rollers for needle housings, dimensions in m | |
PE | | extended tolerances (ZKFL/ZKLN only) | |
RR | | with Corrotect® coating | |
SK | | Inner hexagonal drive for taper rollers, intended to become standard and replace the slotted version! | |
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SM03 | Lubrication | Lubricated with KP2N-25 grease to DIN 51825, for temperature range -30°C to +150°C | |
SM11 | | Lubricated with K2E-25 grease toDIN 51825, for temperature range -40°C to +150°C | |
ZW | | Radial needle housing, two-row | |
.2AP | | Axially paired bearing (ZKFL/ZKLN only ) | |
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RS | Seal | Lip seal on one side of bearing | |
.2RS | | Lip seal on both sides of bearing | |
PP | | Lip seal on both sides of bearing | |
.2Z | | Split seal on both sides of bearing | |
FPM | | Sealing rings of fluorinated rubber | |
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X | Suffix | Bearings and accessories whose outer dimensions have been changed due to modifications to international standards The X symbol is used only during a transitional period.
X also stands for cylindrical outer ring races for taper and support rollers | |