A yoke assembly of an oscillatory system is described herein. The yoke assembly includes a yoke structure. The yoke structure includes a first sidewall and a second sidewall, the second sidewall spaced apart from the first sidewall, the first and second sidewalls having a gap therebetween. The yoke structure includes at least one member extending between the first and second sidewalls, a first flange extending laterally from the first sidewall and a second flange extending laterally from the second sidewall. The yoke structure is a unitary structure having the first and second sidewalls and the first and second flanges integrally connected.