The elevator overspeed governor is one of the safety control components in the elevator safety protection system. When the elevator is running over its rated speed or out of control, or the suspension device broken, the overspeed governor and the safety gear will act in linkage to stop the elevator car up or down.

The governor is mainly composed of the following main spare parts:

Speed Governor Pulley、Guide Pulley

Spring

Bolt

Support and base

Centrifugal System 

Locking Device

Casing and Wire Rope

Overspeed Governor Contact

Governor Trip Switch

There are many kinds of elevator overspeed governors in the market. Usually, they can be divided into one-way overspeed governor and two-way overspeed governor according to the function:

One-way overspeed governor ,like:

Model No. OX-240

Model No. OX-240A  

Model No. OX-208

Two–way overspeed governor ,like:

Model No.OX-240F

Model No. OX-240B

Model No. OX-187

Model No. OX-186A

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