Oil-tight RTD bearing sensor – Istec RTD580

The RTD580 is an oil-tight RTD bearing sensor that measures bearing temperatures on industrial rotating equipment; a key indicator for oil film and bearing health monitoring. Its small sensor tip allows for quick measurements and easy installation, while different cabling options offer excellent durability in harsh environments.

For a thermocouple solution visit the TCS580 page »

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Unique oil barrier

The sensor comes with a unique oil seal which is designed to withstand temperature fluctuations and prevent any oil pass-through over time.

Negates the need for oil drainage

Due to its oil-tight design oil drainages due to leakages are no longer required, nor the necessity to regularly empty these.

Leak-proof pressure tested

To ensure its leak-proof design and the quality of the manufacturing process, each oil barrier is thoroughly pressure tested (2 bar, 20 °C).

“The first fully oil-tight temperature sensor for rotating equipment




Design & configurations

The transition piece has multiple oil barriers to ensure that the sensor is leak proof. Combining the sensor with the optional sealing gland makes the sensor fully oil-tight.

Different sensor configurations are available, including different cable materials and sizes. Refer to the datasheet for details. 


The RTD580 sensor offers an affordable oil-tight solution for slide bearing / plain bearing applications, both for OEMs and end-users. Applications include turbines and compressors in energy, oil & gas, chemical, and petrochemical industries.   

Suitable for harsh environments

The sensor is designed to be used in harsh environments, with excellent durability. It can be used for applications up to 5 bar.

Miniature bearing sensor

The RTD580 has a small sized sensor tip for easy installation and quick temperature measurements. Its suitable for any slide bearing application.

Advanced cabling

Its cabling is designed to be resistant to thermal stress and mechanical deformation. Its design also prevents capillary action inside the cabling.


Ask our experts

Lucas van Ruiten
  • Manager Rotating Services

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Istec RTD580 bearing temperature sensor

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