Adjustable Center Drives

Fixed Center Variable Speed Pulley Drives Engineering

Built with the following components:
1. The spring loaded variable speed pulley
2. Variable speed belt
3. Fixed diameter pulley (Fixed Pulley) Motor sliding base

The spring loaded pulley is mounted on the driving shaft (Motor). The motor is fixed on slide base. Fixed diameter pulley (Fix Pulley) is mounted on machine / Gear reducer shaft and belt is inserted on both the pulleys. The motor slide base is moved either towards or away from the fixed pulley while running. Through this change in center distance between driving and driven shaft, the belt is pulled in or out of the spring loaded pulley. This therefore changes the effective running diameter of the belt on the Variable Speed Pulley and in turn, speed variation of the driven (Fixed pulley) is achieved. Apart from motor slide bases, motor pivoting arm or Jockey pulley can be used.