What is the difference between different types of vertical indexing conveyor designs (e.g., belt-based vs. roller-based)?

Vertical indexing conveyors can be belt-based, using a continuous belt to transport products, or roller-based, utilizing a series of powered rollers. Belt-based systems are suitable for larger or heavier items. Roller-based systems are often preferred for smaller, lighter items where precise positioning is paramount. The choice depends on product characteristics and application requirements. There are also variations like pusher systems.