• Istec Academy
  • Shop
  • News
  • Support
  • Events 12
  • Local partners
  • Jobs
  • Contact
  • English
  • Nederlands
  • Deutsch
  • Français
  • Español
  • Italiano
  • Português (Brasil)
  • Polski
  • Türkçe
  • العربية
  • 日本語
  • 简体中文
  • Home
  • Products
  • Vibration
    • Hardware
    • Protection systems
    • Monitoring systems
    • Sensors & transmitters
    • Engineering solutions
    • Vibration analysis
    • Vibration analysis software
    • Vibration analysis services
    • Wind turbines analysis
    • Field service & support
    • Troubleshooting
    • Turnaround service
  • Speed
    • Hardware
    • Speed protection systems
    • Speed monitoring systems
    • Speed sensors
    • Engineering solutions
    • Manufacturer (OEM) solutions
    • Field service & support
    • Troubleshooting
    • Turnaround service
  • Academy
    • Resources
    • Book Vibration
    • Book Speed
    • E-book: Wind Turbine Optimization
    • Vibration courses
    • Vibration Training (CAT1+)
    • Speed courses
    • Speed sensors: Hall-effect
    • Speed sensors: Eddy current
    • Speed sensors: Variable reluctance
  • About Istec
    • About Istec
    • Vacancies
    • Core values
  • Home
  • Contact
  • Search
  • Menu
    • Home
    • Products
    • Vibration
      • Hardware
        • Protection systems
        • Monitoring systems
        • Sensors & transmitters
        • Engineering solutions
      • Vibration analysis
        • Vibration analysis software
        • Vibration analysis services
        • Wind turbines analysis
      • Field service & support
        • Troubleshooting
        • Turnaround service
    • Speed
      • Hardware
        • Speed protection systems
        • Speed monitoring systems
        • Speed sensors
        • Engineering solutions
        • Manufacturer (OEM) solutions
      • Field service & support
        • Troubleshooting
        • Turnaround service
    • Academy
      • Resources
        • Book Vibration
        • Book Speed
        • E-book: Wind Turbine Optimization
      • Vibration courses
        • Vibration Training (CAT1+)
      • Speed courses
        • Speed sensors: Hall-effect
        • Speed sensors: Eddy current
        • Speed sensors: Variable reluctance
    • About Istec
      • About Istec
        • Vacancies
        • Core values

Oil-whirl

An oil-whirl occurs when the shaft in a bearing vibrates at a frequency of about half of a rotational speed. The amplitude of the movement at the center of the shaft increases as a result.


ALSO VIEW:

Top 3 reasons for hydro turbine speed monitoring

ALSO VIEW:

Optimizing operational safety and availability of fertilizer plants

ALSO VIEW:

Choosing the right accelerometer mount: 6 effective methods explained

Procesinstrumentatie

Op ons blog schrijven onze experts leerzame artikelen over nieuwe ontwikkelingen, hun ervaringen en leuke cases waar je iets van kunt leren.

Procesinstrumentatie

Condition Monitoring

Op ons blog schrijven onze experts leerzame artikelen over nieuwe ontwikkelingen, hun ervaringen en leuke cases waar je iets van kunt leren.

Condition Monitoring

Machinebewaking

Op ons blog schrijven onze experts leerzame artikelen over nieuwe ontwikkelingen, hun ervaringen en leuke cases waar je iets van kunt leren.

Machinebewaking

Products & services

  • Catalog
  • Vibration Monitoring and Protection
  • Speed Monitoring and Protection
  • Turnaround service
  • Troubleshooting

Istec

  • Support
  • About Istec
  • Facts & Figures
  • Istec Response™
  • Customer references
  • Certificates
  • Istec news
  • Conditions of delivery
  • Privacy statement & disclaimer

Our locations

  • Lisse, Netherlands
  • Istec International BV
  • Meer en Duin 8
  • 2163 HA, Lisse, Netherlands
  • +31 (0)252 433 400
View all offices

Istec International © 2026. All rights reserved

Istec International uses cookies. By clicking 'Accept cookies' or by using this website you confirm agreeing to this.
Learn more about the used cookie.

Accept cookies
0

Downloads

Enter a valid emailadress