Function
The jaw is opened and closed with the locking lever except for the 92-500 which uses a positive spring-loaded cam. The safety lock spring loads the cam jaw, preventing the clamp from opening even when there is no load.
Workmanship and parts
These plate clamps are service-friendly, making it easy to exchange parts, which are readily available. Clamp repairs are available through the factory, or can be done by a competent person. The 92-500 is equipped with positive spring-loaded cam, but comes without locking lever.
NB: The plate surface of the material must have a hardness level below HRC 30/Brinell 300.