Trilogy Ironless motors have no laminations. Ironless motors have useful advantages from no magnetic attraction, higher responsiveness due to lower inductances, lighter weight motors and stages and no detrimental effect from misalignment. Ironcore motors have laminations and employ a different magnetic flux circuit than Ironless motors. Ironcore motors provide much higher forces and over longer travels cost less due to half the number of magnets used. Their disadvantage is a large attraction force between the coil and track. This force puts a large load on the linear bearings. Slotless motors have some laminations to help focus the magnetic flux. They have a much smaller attractive force than Ironcore motors but are also less efficient. Their main feature is a lower cost.