The 330186-02 is an axial micrometer from the Bently Nevada 3300 XL series. It is a portable hardware tool designed for verifying and calibrating mechanical signals in industrial environments. Its primary function is to verify the accuracy of proximity sensor output signals when directly observing the rotor shaft of rotating machinery or the piston rod of a reciprocating compressor.
In terms of accuracy, the Bently Nevada 330186-02 has a mechanical fine-tuning resolution of 0.01 mm, and its measurement accuracy is strictly controlled within ±0.003 mm throughout the entire measurement range. The micrometer housing is made of high-strength ABS plastic. It comes equipped with a dedicated target mounting base and a precision-calibrated 30.5 mm diameter AISI 4140 standard alloy steel test block, and is seamlessly compatible with M8, M10, M14, and M16 micrometers.
Furthermore, the Bently Nevada 330186-02 supports connection and testing of various imperial standard proximity probes. In practical applications, high-strength flexible straps are used to securely and directly attach the hardware to the surface of the actual measurement target (such as a spindle or piston rod).













