SPM leonova emerald, Руководство пользователя

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Shock pulse measurement
D:25
D
One part of the input data, the rpm and the size of the bearing, is needed to allow for the effect of
bearing speed on the shock level when evaluating bearing condition. The mean diameter Dm is more
exact than the shaft diameter, because the height of bearings with the same shaft diameter can vary
considerably. Together, rpm and Dm are used to calculate the NORM no. of the bearing (range 10 to 58).
The HR level shock pulses vary with the shape and number of the rolling elements in the bearing. This
becomes important when estimating the oil film thickness in the rolling interface. The largest influencing
factor is the shape of the contact area. In ball bearings, the rolling element has point contact with the
raceways. In roller bearings, there is line contact, which means that the area under pressure, where
the shock pulses occur, is much larger.
For SPM purposes, bearings are grouped into 8 different types, each with a TYPE number 1 through
8. The types are described in the table above.
Bearing manufacturers, though not all, follow ISO standards when numbering their bearings. The
number code contains the information on mean diameter and bearing type. Thus, when you use an
ISO bearing number as input in Condmaster
®
, the program will give you Dm and TYPE no. As manual
input for Leonova, you can use the last three digits of the ISO number, which will produce Dm but not
the TYPE no.
Input data for LR/HR and LR/HR HD
1 Deep groove ball bearings,
series 62, 63, 64
2
Angular contact bearings,
all series
3
Deep groove ball series 60, 160, 618,
double row and self-aligning ball bearings
4
Thrust ball bearings, all types
5 Cylindrical roller bearings, single row
6 Taper roller bearings, all radial types
7 Spherical roller bearings
Double row cylindrical roller bearings
8
Thrust roller bearings