HFN4 Pivot Friction Apparatus
The apparatus consists of a rotating circular turntable attached onto the end of a vertical shaft. The shaft is held vertical within a sturdy wall bracket that must be attached to a rigid vertical surface, i.e. a wall.
At the lower tip of the shaft a special fixing has been created to accept a variety of end pivots. Mating seatings have been manufactured for the end pivots. The seatings positively locate at the bottom of the wall bracket so that they mate with their respective seatings but do not rotate under testing.
The seatings are made from different materials and with different internal cone angles.