Pulp and paper mill equipment, digesters, bleach lines, paper machines, winders, and supercalenders.
Paper machines run a continuous web at speeds that feel impossible the first time you stand beside one. A break on a high-speed machine costs tens of thousands of dollars per minute in lost production and recovery time. Maintenance here is about keeping the web-handling mechanics, the press section, and the dryer section all within tight tolerances.
Most paper breaks are not caused by the break location. They are caused by something upstream in the wet end or the press section that passed a weakness into the sheet. Fabric condition. Felt loading. Press roll crown. Stock quality. When a machine is breaking too often, walk backwards from the break location and find what changed.
Dryer cylinders are heated by steam, and the efficiency of that heat transfer is directly tied to trap and siphon condition. A failed trap on a dryer cylinder leaves condensate in the drum, which reduces heat transfer and adds weight. Dryer surveys measure trap performance and identify the cylinders that need attention. Do them annually.
Winder faults are often blamed on the paper.
Paper machine drives are high-precision systems with tight load-sharing requirements across the sections. A drive that is fighting the section next to it will show as tension instability. When a drive trips, the recovery is not instantaneous: the machine has momentum, and restarting without controlled deceleration can cause a break. Drive commissioning and tuning are specialized work.
Valmet
Continuous Digester for Pulp & Paper production
Valmet
Refiner / Pulper for Pulp & Paper production
Voith Paper
Paper Machine / Headbox for Pulp & Paper production
Valmet
Yankee Dryer for Pulp & Paper production
Valmet
Calender / Winder for Pulp & Paper production
ANDRITZ
Recovery Boiler for Pulp & Paper production
Deeper explainers and background reading for technicians working in pulp & paper.
Pumps fail for predictable reasons: cavitation, dry running, seal wear, misalignment, and a handful of others. Once you know the eight patterns, you can set up monitoring and PM tasks that catch each one early. This guide covers every common failure mode with prevention steps.
Bearings are the most commonly replaced component in industrial machinery. Yet 16% of premature bearing failures come from improper installation: wrong fit, contamination during mounting, or inadequate lubrication at startup. This guide covers the full process from selection to run-in.
Every rotating machine vibrates. The pattern of that vibration tells you whether bearings are wearing, shafts are misaligned, or components are out of balance. Learning to read vibration data catches 90% of rotating equipment failures weeks before they happen.
Preventive maintenance replaces the 'run it until it breaks' approach with scheduled inspections and part replacements. Plants that run a solid PM program see 25-30% fewer emergency work orders within the first year. Here is how to build one that sticks.
Images on this page sourced from Freepik. Credits: studioworkstock, subinpumsom, PoppyPix, vershinin89.
