Material Handling

White Papers 



TriFactor's White Papers are a knowledge base of best practices associated with material handling systems design.  These White Papers, writen by the TriFactor's staff, have been featured in 100's of industry publications and web sites.




Ten Ways to Improve Material Handling Efficiency



Considerations When Selecting a Sortation System



Effectively Slotting a Warehouse or Distribution Center



Guidelines for Choosing a Conveyor System  



How to Avoid the 12 Most Costly Conveyor Maintenance Mistakes  



The Five Most Common Mistakes When Planning a Distribution Center  



WCS/WMS: Taking Control of Your Business  



Seven Critical Steps to Planning Your Warehouse or Distribution Center



Considerations When Planning Palletizing Operations



Innovative Material Handling when Distributing Health Care Products  



More White Papers



Please visit our sister websites focusing on accumulation conveyorsgravity conveyors, belt conveyors and Hytrol conveyors.


Hytrol Model 190-NSP
Hytrol 190-NSP Conveyor

Line Shaft Driven, Medium Duty


• Bed:  9-1/2" x 12 ga. formed steel channel frame, powder painted

• Roller: 1.9" dia. x 16 ga. galvanized spaced every 3"

• Overall Frame Widths: 18", 24", 30"

• Capacity: Maximum load per powered roller; 15 lbs., not to exceed rated capacities  


Details and Pricing


Model 190-NSPC
Hytrol 190 NSPC Line Shaft Driven Curve Conveyor

Line Shaft Driven Curve, Medium Duty


• Bed: 9-1/2" deep x 12 ga. formed steel frame powder painted


• Rollers: 2-1/2" dia. tapered to 1-11/16" dia. x 16 ga. and 1.9" dia. x 16 ga. galvanized rollers


• Overall Frame Widths: 18", 24", 30"


• Available In: 90°



Details and Pricing


Hytrol Model ABLR
Hytrol Model ABLR Flat Belt Driven Conveyor

Flat Belt Driven, Medium Duty


• Bed: 11 Bed Widths


• Center Drive


• Reservisble


• Available: Adjustable MS-Type Floor Supports


• Transports: Medium to Heavy Cartons



Details and Pricing


Live Roller Conveyor

Live Roller Conveyors are conveyors in which the rollers are the conveying surface and they are driven by an external force.  This external force is typically a belt that is making contact with it’s under side causing the conveyor rollers to rotate and move product on the conveyor.  Besides a flat belt, there are many other ways the rollers can be driven. Other examples include using o-rings, which connect rollers to spools that are mounted on a powered line shaft, and chain engaging sprockets, which are located on the rollers. There are also rollers that have their own self contained motors to drive the conveyor.  Live roller conveyors are typically used for transportation, accumulation and in some cases, sortation.  Loads may easily be diverted, deflected, merged or transferred from a live roller conveyor

These conveyors come in various lengths and widths to accommodate a range of load sizes, but all have one common requirement; that being there must be a minimum 3 rollers under the conveyed product in order for the conveyor to work. 

Belt Driven Live Roller Conveyor

The carrying rollers (rollers the box moves on) are driven by a flat belt which runs between the carrying roller and a pressure roller which forces the belt to make contact with the carrying roller. 

Accumulating Live Roller Conveyor

Ideal for staging product so that all the boxes can be sent together to an area as a group, or to provide storage between work areas, such as between an order picking area and the shipping area of a distribution center.  There are basically two types of Accumulation Conveyor; that being Low Pressure Accumulation and Zero Pressure Accumulation. 

One common characteristic of Low Pressure conveyors is when accumulating product the drive to the rollers is reduced, but still present, resulting in product be stored in a solid pack.  As a result, there are limits associated with low pressure accumulating conveyor. Examples would be the product must be consistent in width and can not be fragile. The length of a conveyor is also limited due to the line pressure, which increases as more product accumulates and is a function of size, shape and weight of the loads.  This conveyor also requires some type of stopping device at the discharge end, which most commonly is a brake belt conveyor. 

Zero Pressure Accumulation Conveyor as the name implies has no forward line pressure when the conveyor is in accumulation mode.  Conveyors are divided into zones and each zone has a sensor device of some type. The sensor devices are either photo eyes, sensor rollers or proximity switches.  When a sensor detects product in a zone, the driving force in the preceding zone is removed, allowing for the next product entering that zone to be accumulated.  There are many advantages associated with zero pressure conveyor.  Products with different characteristics, such as various sizes, weights, and both fragile and non-fragile can be mixed together.  The lengths of these conveyors can be much longer, and instead of a belt conveyor at the discharge end, you can start the accumulation process with a case stop or photo eye.

Motorized Driven Roller Conveyor

Motorized driven roller conveyor uses rollers which have a self-contained 24 Volt DC motor or have a motor connected directly to the roller.  The powered roller slave drives adjoining rollers by using polyurethane o-rings similar to that of line shaft conveyors.  By adding zone sensors this type of conveyor easily converts to zero-pressure accumulating conveyor. 

Lineshaft Driven Live Roller Conveyor

A gear motor drives a line shaft running the length of the conveyor which has spools mounted to it.  The rollers are driven by polyurethane o-rings attaching the rollers to the spools.  One of the main advantages of line shaft type of conveyor over belt driven conveyor is the ability to drive conveyor systems with curves, spurs and other transfer devices with only one drive.

Chain Driven Live Roller Conveyor

Chain driven live roller conveyors are designed to handle heavy loads such as pallet loads of product.  Sprockets are welded to the carrying rollers creating a very positive driving force.  Roller-to-Roller chain driven live roller has two sprockets welded to each roller.  Chain loops connect pairs of rollers in a staggered pattern.

If you need help specifying the right conveyor for your application call JJ Phelan, TriFactor’s Professional Engineer at 1-800-507-4209

Your chain driven live roller conveyor source!

Hytrol Live Roller Conveyors, Chain Driven Live Roller Conveyor, Chain Driven Live Roller Conveyors




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