Products Catalog

Specification

Transducer and measuring procedure are the same as for the dBm/ dBc method. The shock pulse meter counts the rate of occurrence ( incoming shock pulses per second) and varies the gain until two amplitude levels are determined:

* HR = high rate of occurrence, quantifying the shock carpet ( approx. 1000 incoming shocks per second) .
* LR = low rate of occurrence, quantifying the strong shock pulses ( approx. 40 incoming shocks per second) .

LR and HR are ' raw values' , measured in dBsv ( decibel shock value) .
Input data

The LR/ HR method requires more precise data on the bearing, because bearing geometry, as well as size and speed, affect the shock carpet and thus the analysis of oil film condition in undamaged bearings. The rpm is needed, plus a definition of the bearing type and size. This is best input by stating the ISO bearing number, which links to the bearing catalogue in Condmaster.
Evaluation
LR/ HR

The shock carpet and peak values, together with bearing geometry, size and speed are concidered to give an evaluation of the bearing lubrication and possible damage.

After measurement the measuring device returns

* a general description of bearing condition ( CODE)
* a value for oil film condition ( LUB)
* a value for surface damage ( COND)

A LUB no. of 0 means dry running, the value increases with oil film thickness. A COND no. of around 30 indicates surface stress or early damage, the value increases with damage severity. The general assessment is:

CODE A Good bearing
CODE B Poor lubrication
CODE C Dry bearing, risk of damage
CODE D Damage Put on Product PartnerRecommend to your friends