Tube Expanding Equipment

Universal Joint Drives

Are used to operate short mandrels in tube expander when rolling and flaring tubes through hand hole at angles up to 35° from center line. View 1 shows position of mandrel and universal joint drive at beginning of operation. View 2 shows position of mandrel and drive after mandrel has traveled maximum distance into tube expander.

Parallel Gear Drive

Is used to roll tubes at right angle through hand hole. View 3 shows starting position. View 4 shows amount of travel (T). May also be used parallel inside of header and operated through nearest hand hole with second gear drive

Right Angle Gear Drive

View 5 is preferred for rolling tubes at any angle to hand hole when used parallel inside of header. Drive shaft and coupling connects two right angle gear drives enabling operator to drive the tube expander from outside of header. Single right angle gear drive with long drive shaft is often used for rolling tubes inside headers having end opening. Two sizes available.

Universal Joints

Are heat treated for long service. Have set screws which will fit in countersunk holes in hort mandrels and drive handles. Provide an effective operating range at angles up to 35°. These combined drive and joint assemblies are easy to operate … save time, labor and are especially convenient when the size of the header permits operating the tube expanders from outside the header by reaching through hand holes.