The Svilocell pulp mill. Photo: SPM Instrument Bulgaria

Outer race damage in Chemi-Washer detected with HD technology

This case study from Bulgarian pulp mill Svilocell is about the detection of a bearing damage through route-based condition monitoring on a Chemi-Washer, using the portable data analyzer Leonova Diamond.

After many years of using the portable A30 analyzer, Svilocell upgraded to Leonova Diamond with HD condition monitoring technologies. Soon after, shock pulse measurements with SPM HD indicated a bearing problem on the front reversible roll, with very clear BPFO matches. Three months later the bearing was replaced, revealing severe outer race damage.

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Case Study
Filename/description Language Size Modified
CS_017B_Chemi Washer_Svilocell_BG.pdf English (United Kingdom) 3 MB 11/24/2017
SPM HD case study on a Chemi-Washer at pulp mill Svilocell in Bulgaria.

Pulp and paper

Condition monitoring is a cornerstone in the asset management of pulp and paper plants. Having control of the operating condition is a must to optimize plant profitability.

Leonova Diamond

Leonova Diamond® is an advanced and powerful data analyzer for high-efficiency measuring routes in rough industrial surroundings.


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