Page 53 - Rollingbearings

Tolerance symbols
cont. table 13
Tolerance symbols
Tolerance symbol Deinition

Thrust bearings shaft washer

d Nominal bore diameter of shaft washer, single direction bearing
Δds Deviation of a two-point size of shaft washer bore diameter from its nominal size
Δdmp Deviation of a mid-range size (out of two-point sizes) of shaft washer bore diameter in any cross section from its nominal size
Vdsp Range of two-point sizes of shaft washer bore diameter in any cross section
Tolerances
Nominal bore diameter of central shaft washer, double direction bearing
d 2
Δd2mp Deviation of a mid-range size (out of two-point sizes) of central shaft washer bore diameter in any cross section from its nominal
size
Vd2sp Range of two-point sizes of central shaft washer bore diameter in any cross section
A.2
Si 1 Range of two-point sizes of thickness between shaft washer raceway and the back face, cylindrical roller thrust bearing
2 Range of minimum spherical sizes between the raceway and the opposite back face of the shaft washer, obtained from any longi-
tudinal section which includes the shaft washer bore axis, thrust ball bearing

Thrust bearings housing washer

D Nominal outside diameter of housing washer
ΔDs Deviation of a two-point size of housing washer outside diameter from its nominal size
ΔDmp Deviation of a mid-range size (out of two-point sizes) of housing washer outside diameter in any cross section from its nominal size

VDsp Range of two-point sizes of housing washer outside diameter in any cross section
Se 1 Range of two-point sizes of thickness between housing washer raceway and the back face, cylindrical roller thrust bearing
2 Range of minimum spherical sizes between the raceway and the opposite back face of the housing washer, obtained from any
longitudinal section which includes the housing washer outside surface axis, thrust ball bearing

Thrust bearings assembled bearing height

T Nominal assembled bearing height, single direction thrust bearing (except spherical roller thrust bearing † T 4 )
ΔTs Deviation of minimum circumscribed size of assembled bearing height from its nominal size, single direction thrust bearing (except
spherical roller thrust bearing † ΔT4s)
1 Nominal assembled bearing height, double direction thrust bearing
T 1
2 Nominal assembled bearing height, single direction thrust bearing with a seat washer
ΔT1s 1 Deviation of minimum circumscribed size of assembled bearing height from its nominal size, double direction thrust bearing
2 Deviation of minimum circumscribed size of assembled bearing height from its nominal size, single direction thrust bearing with a
seat washer
3)
T 3 Nominal assembled bearing height, double direction thrust bearing with seat washers
ΔT3s 3) Deviation of minimum circumscribed size of assembled bearing height from its nominal size, double direction thrust bearing with
seat washers
4) Nominal assembled bearing height, spherical roller thrust bearing
T 4
ΔT4s 4) Deviation of minimum circumscribed size of assembled bearing height from its nominal size, spherical roller thrust bearing

3) Not included in ISO 199.
4) In ISO 199, the symbol T is used.

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