Types of Conveyor Rollers: Everything You Must Know Before Purchasing
Belt-driven Conveyor Rollers
Belt-driven conveyor rollers are an MDR model that features a motorized belt that makes moving objects across a facility nearly effortless. They are more efficient than traditional belt conveyor rollers since they don’t require items to stop at control points.
These MDR conveyor rollers support medium to heavy-weighted objects with wider frames.
Belt-driven conveyor rollers also allow operators to stop and reverse the belt, giving them more control over the transportation system.
However, belt-driven conveyor rollers only come in two shapes (straight and V-shape) and degrade rather quickly if they encounter excessive heat, moisture, or debris.
Nevertheless, these conveyor rollers are exceedingly beneficial to companies that need to move large, dry products across facilities swiftly.
Chain-driven Conveyor Rollers
Chain-driven conveyor rollers function similarly to belt-driven roller systems but utilize chains instead of motorized belts. They are incredibly robust and support heavy objects of all shapes and sizes. These roller systems won’t deteriorate in damp conditions (if well maintained) and allow reversible operations when needed.
Chain-driven conveyor rollers come in two primary designs
Roll-to-roll
Single-strand
Roll-to-Roll
Roll-to-roll models are heavy-duty conveyor rollers that utilize a chain that wraps around each roller and connects to two sprockets within the rollers. They are more powerful than the single-strand variation and can transport oversized projects efficiently.
Single-strand
Single-strand chain-driven conveyor rollers utilize one non-looped chain that connects to roller sprockets. They also feature a hold-down bar that keeps the chain continuously engaged.
Although these MDR conveyor rollers support medium to heavy-weighted items, they aren’t as strong as roll-to-roll models.
Line Shaft Conveyor Rollers
Line shaft conveyor rollers use a rotating shaft that connects to each roller by urethane belts and drive spools. They are easy to maintain and operate almost silently.
However, the drive spools sometimes slip when heavy objects apply too much pressure on the rollers, making them less ideal for heavy-duty transportation. Fortunately, the excess stress only affects the weighed-down area, allowing the machine to continue operations in non-affected regions.
These MDR conveyor rollers span over 100 feet and come in straight and curved designs. They allow reverse operation and can improve any warehouse’s efficiency.
Zero Pressure Conveyor Rollers
Zero pressure conveyor rollers, also called pressureless accumulating conveyors, are advanced roller systems that prevent goods from touching each other during transport.
They use sophisticated motors and sensors to control specific zero pressure areas on the track, creating buffer zones between items. Some rollers utilize motors that connect to the machine’s control system, allowing photocells to determine when a product reaches or surpasses track zones.
Business owners can buy zero-pressure conveyor roller kits to upgrade their existing transportation system or purchase a complete unit. These cutting-edge conveyor rollers are the most innovative and efficient model available, making them the go-to choice for large factories, warehouses, and other industrial facilities. Although these MDR conveyor rollers usually carry higher price tags, many business owners believe it’s a small price to pay for outstanding efficiency, longevity, and consistency.
Powered Conveyor Rollers
These MDR conveyor rollers combine motorized and non-motorized rollers to transport goods quickly. Every tenth roller has an internalized motor that pushes items forward to manual rollers connecting to several O-rings. Powered conveyor rollers carry small, lighter products without issue but struggle to move heavy objects without halting the track.
However, powered conveyor rollers work well for smaller warehouses needing to transport small, lightweight goods.
carrying idlers and return idlers
Troughing idlers
Troughers are the most common idlers used on the carry side of the conveyor.
Extending their life expectancy can be a challenge. Our proven seal design and low maintenance rollers lead to less downtime and increased profits.
Metso’s troughing idlers come in 20°, 35°, and 45° and meet all CEMA dimensional requirements.
Conveyor Idlers - Impact Idlers - Types of Idlers
Trough Idlers
Trough idlers are the most common type of carry idler, which are typically designed with 3 or 5 idler rollers and are fitted to the carry-side of the conveyor belt. The 5-roll idler offers more uniform cross section, resulting in a greater net carrying capacity. The 3-roll design has a centre idler roll and wing idlers on either side.
The benefit of using a trough idler is that they help to ensure the load-bearing capacity of the conveyor belt is the same along the length of the belt. With a more even distribution of load-bearing, the maximum capacity of material at the loading point won’t fall off of the belt.
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