WZP-316T Bearing Thermal Resistance

Bearing Thermal Resistance

Bearing Thermoresistors— specialized temperature sensors designed for monitoring bearing temperatures in rotating machinery such as electric motors, steam turbines, fans, and compressors, featuring aface‑mounting sensing structureand aseismic‑resistant design, which ensures tight contact with the bearing or bearing shell surface to provide real‑time, accurate temperature measurements and ensure safe equipment operation. The measurement range is –40 to 200°C, with core components made from Pt100 platinum resistance thermometers; copper resistance options (Cu50/Cu100) are also available. These sensors are widely used for bearing temperature monitoring in large rotating machinery across industries including power generation, petroleum, chemical processing, and metallurgy.

1. Product Overview

Bearing thermoresistors are specialized temperature sensors designed to measure the temperatures of motor-end bearings, bearing shells, or steam turbine bearing shells. Unlike conventional thermoresistors, bearing thermoresistors employa face‑mounted sensing element—a wire‑wound or thin‑film platinum resistor that is tightly bonded to the probe’s end face, allowing direct contact with the measured surface and accurately reflecting the true operating temperature of the bearing.

This product addresses the issues of ordinary thermal resistors being prone to damage and exhibiting measurement lag in vibrating environments, featuring a shock-absorbing structure that securely mounts to the surface of the bearing being measured, significantly enhancing temperature measurement reliability and service life.

Typical application equipment：

• Power plant steam turbine bearings and journal bearings

• Large electric motor and generator bearings

• Bearing applications for fans, air compressors, and pumps

• General-purpose machinery bearings such as rolling mills and compressors

II. Bearing Thermoresistor Selection Chart

① Thermistors of Class A and thermocouples of Class I must be ordered according to the agreement;

② If the temperature measurement range and sheath material are not specified, the sheath material shall uniformly be considered 1Cr18Ni9Ti;

III. Product Features

1. End-face Contact Design — Precise Measurement

• The temperature-sensing element is tightly attached to the probe’s end face, making direct contact with the bearing surface

• This eliminates the measurement lag inherent in traditional axial thermistors, providing an accurate reflection of bearing temperature

• The wire-wound structure is suitable for measuring average temperature, while the thin-film structure is ideal for single-point temperature sensing

2. Vibration-Resistant Structure — Robust and Durable

• Utilizing components packaged from Germany, this design offers high reliability and excellent vibration resistance

• The external lead cable is protected by a flexible stainless steel tube, preventing excessive external impact and bending

• Suitable for long-term operation in highly vibrational environments, such as inside steam turbines

3. Easy installation—multiple options

• Standard M27×2 threaded mounting, compatible with most bearing housing interfaces

• Optional fixed mounting or detachable design, facilitating maintenance and replacement

4. High Reliability—Long Lifespan

• High-performance platinum resistance thermometer, long-term supplied to turbine manufacturers and other organizations

• High temperature measurement accuracy, vibration resistance, oil resistance, and high reliability