Throughout the presentation I will be sharing a case study that happened this year, we monitored a defect on our Yankee roll bearings that resulted to take the call to change the bearings that costs 50,000 Euro and stopping the plant for 3 days to make the maintenance activities.
- Hassan Abdelnabby
- AL zeina tissue mill co.
Rolling element bearing defects are typically artifacts of mechanically induced stresses or lubrication issues that create small cracks or defects within the mechanical components of the bearing, leading to increased vibration.
- Pete Sopcik
- Analog Devices, Inc
In this presentation we will discuss how to use ESA/MCSA to detect bearing and gear defects in a variety of driven equipment including geared elevators, cooling towers, and other applications, even when we are looking at a few RPM. We will discuss how to determine the correct frequencies as well as how to determine the defect severity amplitudes in -dB, and how to isolate the machine you are testing from nearby machines. Several case studies will be presented including an AC building elevator, a cooling tower, and at least one complex (multi-stage) gearbox using both data collection and continuous monitoring.
- Howard Penrose
- MotorDoc LLC
Learn the benefits of trending average inductance on an electrical motor to find rotor bar issues. This case study involves a motor which could not be replaced due to its unique design. Investigating the rotor bar health in a timely manner saved the automotive manufacturer approximately $350,000.
- Noah Bethel
- PdMA Corporation
Variable frequency drives (VFDs) have become a preferred method of process control for electric motor driven equipment ranging from vertical water pumps to centrifugal air fans. The following is a basic discussion of risks of using a VFD with direct driven centrifugal fans and methods of mitigating those risks to maintain equipment reliability.
- David Sheffler
- IVC Technologies
As predictive maintenance teams in industrial facilities strive for a more complete picture of their equipment’s health, high frequency vibration measurements have become a crucial addition to identify faults such as motor and pump bearing defects and gear tooth inconsistencies in high-speed gearboxes. As a result, there is an upsurge in demand for vibration sensors with a high frequency response.
- Meredith Christman
- PCB Piezotronics
Gear faults typically occur in the teeth of a gear mechanism due to fatigue, spalling, or pitting. These can be manifested as cracks in the gear root or removal of metal from the tooth surface. Gears are the main elements of power transmission in many industrial applications and are subjected to significant stresses and loading.
- Dara O'Sullivan
- Analog Devices, Inc