Free Engineering Tool #052
Bearing Relubrication Planning Data Helper
Calculate mean diameter dm and speed factor n·dm for use with the current chart or software of the exact bearing and grease manufacturer.
Results
Verified preparatory calculations
SKF’s current public guidance derives relubrication interval from a manufacturer diagram or calculator using bearing factor bf × n × dm, load ratio C/P and application conditions. Temperature, vertical shaft, vibration, outer-ring rotation, contamination, bearing size and some cage designs can require different treatment; contamination is not a universal numeric multiplier.
Use the exact bearing designation and grease in the current manufacturer calculation tool, or the equivalent tool/documentation from the selected bearing manufacturer.
No. It calculates only dm=(d+D)/2 and n×dm. Obtain the interval from the current chart or software for the exact bearing and grease.
Manufacturer methods combine bearing-family factors with speed factor, load ratio, grease, temperature and application conditions. A universal type multiplier is insufficient.
Use exact bearing designation, load or C/P, grease performance and temperature limits, operating temperature, orientation, contamination, vibration, outer-ring rotation and manufacturer-specific instructions.
The procedures described on this page were developed and field-tested by the Vibromera team using the Balanset-1A, a portable dual-channel balancer and vibration analyzer for on-site rotor balancing.
Professional vibration analyzers for bearing condition monitoring.
