MEMBER Wood Products;

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MEMBER Forest Operations; Pulp, Paper and Bioproducts;

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Previous experimental tests and mill tests on multiple saw machines and several sawmills confirmed that monitoring saw temperature during sawing provided useful information to diagnose sawing and lubrication issues (Part I). It was also shown how to compute the cooling capacity of the guide lubrication system and the ratio of heat generation relative to the cooling capacity from the recorded temperature data (Part II). In order to make this technology widely available to industry, the reliability of the sensor was improved and 20 sensor kits were sent to different sawmills for evaluation. As a continuation work on this project, a computer program was developed that automatically calculate the cooling coefficients at selected intervals. The results showed that cooling coefficient can be used to monitor the condition of saws and guides. The test results indicated that monitoring cooling coefficients provide useful information on guide and lubrication system condition, such as problem with warn guide pads, sawdust packing, and blockage of lube ports to a guide. The computer program provides the user the temperature changes near the saw eye and rim, and also the difference between rim and eye during the test. It also shows the maximum temperature, maximum temperature difference between rim and eye, and the average temperature. The program computes and plots the histogram of temperature change during the test period. The histogram may be used for analyzing the temperature changes during a shift.


  • Open to all
  • Wood products member
  • Pulp, paper and bioproducts member
  • Forest operations member