Shock pulse monitoring

SPM is an abbreviation for the Shock Pulse Method, which is a patented technique for using signals from rolling element bearings as the basis for efficient condition monitoring of machines. Instant evaluation of bearing condition is given in an easily understood green-yellow-red color scheme.

The Shock Pulse Method, originally invented in 1969, has been further developed and broadened and is now a worldwide-accepted philosophy for condition monitoring of rolling bearings and machine maintenance. Outperforming traditional vibration measurement techniques on many applications, the SPM HD method is unrivaled in its capacity to measure from below 1 RPM upwards. The perfect companion to vibration analysis, SPM HD can be used successfully on all types of machinery with rolling element bearings.


SPM HD – high-definition shock pulse monitoring in a very broad RPM range, including ultra-low-speed applications (0.1 - 20 000 RPM range).

Shock Pulse Method dBm/dBc

For over fifty years, the original Shock Pulse Method (SPM) has been very successfully used to obtain a fast, easy, and reliable diagnosis of the operating condition of rolling element bearings.

Shock Pulse Method LR/HR

The LR/HR method allows the precision analysis of oil film condition in the interface between the outer and inner races and contains calculation models for finding the optimal lubricant.