Pulp & Paper industry: Roll Barring

2020-06-05T09:58:25+02:0020. July 2018|Customer Case Studies, Cases with PROGNOST®-Predictor, Pulp and Paper|

Roll barring is very common in the press and calendars sections with rolls that are nipped together. This example is in a Soft Nip Calendar which has two Beltex rolls nipped against a Tripass steel calendar roll. The Tripass roll is of very high-temperature oil running through it in three passes. The Beltex is a softer covered roll and can be barred fairly easily. Problems caused by Beltex roll After prolong runs the Beltex will start to bar and only get worse until it causes problems in the paper and then it needs to be removed. After removal, they have to grind the cover to remove the flat spot effects that can be seen if the light hits the roll [...]

Extruder Train Diagnostics

2020-06-05T09:49:30+02:0011. April 2018|PROGNOST Brochures|

Essential Capabilities Every Monitoring and Diagnostic System Must Have A Straightforward Guide to Extruder Train Diagnostics Monitoring takes place on the gearboxes of the extruder, melt pump (gear pump), pelletizer, dryer and associated motors. All critical bearings and gear wheels must be monitored to detect and identify impending failures at an early stage and avoid costly downtime. For this specialized application, there is no “one-system-fitsall” solution. Several factors make extruder train monitoring a unique challenge: • Variability in load and vibration amplitude due to process changes • Wide range of shaft speeds in gearboxes due to the many stages of gear reduction • High number of different faults to track in complex gearboxes • Variable-speed operation of the melt pump [...]

Pulp & Paper industry: Bearing defect on 2nd Press CC Roll

2020-06-05T09:58:26+02:0019. March 2018|Customer Case Studies, Cases with PROGNOST®-Predictor, Pulp and Paper|

This case is presenting a defect of a Triple Ring Bearing at the 2nd Press CC Roll. CC refers to “Controlled Crown”. This has the ability to crown or bend the roll slightly to conform to the nip that is pressing against the other roll. Expensive bearing This bearing is very expensive around 50K USD and is very large. It is called a triple ring bearing as it has two sets of rollers so there is an “outer race of the outer bearing” and there is an “inner race of the outer bearing” then there is an “outer race of the inner bearing” and then finally there is an “inner race of the inner bearing”. Trend view In the trend [...]

Get the Profit: Return on Investment of Condition Monitoring Systems

2020-06-05T09:50:11+02:0027. February 2018|Published Articles|

Condition monitoring can substantially reduce the cost of consequence by avoiding catastrophic failures and reducing the frequency of incidents by providing realtime and continuous diagnoses of bad actors and all relevant components.

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