蛇形弹簧联轴器是利用分为一组或几组的蛇形弹簧，嵌在两半联轴器凸缘上的齿间内，以实现两半联轴器联接，为防止蛇形弹簧在离心力作用下甩出及避免蛇形弹簧与齿接触处发生干摩擦，需用封闭的壳体罩住，并在里面注以润滑油或润滑脂。蛇形弹簧联轴器分为恒刚度和变刚度两种，主要取决于弹簧接触齿的下列两种形式：齿形为直线形：在正常负载时，蛇形弹簧与齿接触点之间的距离不随蛇形弹簧变形量的改变而变化，刚度不变，两半联轴器的相对转角与所传递的转矩为线性关系，属于恒刚度蛇形弹簧联轴器。

由于FALK联轴器的尺寸范围包括：

1020T,1030T,1040T,1050T,1060T,1070T,1080T,1090T,1100T,1110T,1120T,1T,1T,1T,1220T,1230T,1240T,1250T,1260T.

按照联轴器类型，福克FALK联轴器的型号主要为：

1020T10,1030T10,1040T10,1050T10,1060T10,1070T10,1080T10,1090T10,1100T10,1110T10,1120T10,1130T10,1140T10,1150T10,1160T10,1170T10,1180T10,1190T10,1200T10,1210T10,1220T10,1230T10,1240T10,1250T10,1260T10.

1020T20,1030T20,1040T20,1050T20,1060T20,1070T20,1080T20,1090T20,1100T20,1110T20,1120T20,1130T20,1140T20,1150T20,1160T20,1170T20.

1020T31,1030T31,1040T31,1050T31,1060T31,1070T31,1080T31,1090T31,1100T31,1110T31,1120T31,1130T31,1140T31,1150T31,1160T31,1170T31,1180T31,1190T31,1200T31

1030T50,1040T50,1050T50,1060T50,1070T50,1080T50,1090T50,1100T50,1110T50,1120T50,1130T50,1140T50,1150T50,1160T50,1170T50,1180T50,1190T50,1200T50