Conveyor

BF: Between Frames also referred to as Back-to-Back or Between Rails. Simply stated the measurment inside the conveyor frame.

Carrier Rollers: Conveyor rollers upon which the conveyor belt is supported.

Center Drive: Located near center of unit. Center drives are used when an application requires reversible unit operation.

Effective Conveyor Width: (Chain Driven Live Roller) The dimension between side rail and chain guard. Also referred to as “clear” or “conveying surface”

End Drive: Motor and drive components are located at the end of unit. Drive should be located so that drive or carrier belts are pulled, not pushed. End drives are used when one direction only operation is required.

Center Drive: Located near center of unit. Center drives are used when an application requires reversible unit operation.

Gear Motor: A motor and speed reducer combination where the two units are flanged for connection to each other and have one output shaft.

Live Load: The weight of material being moved.

Minimum Pressure Accumulation Conveyor: A type of conveyor designed to minimize build up of pressure between adjacent packages or cartons.

Motor Starter: An electrical controller for accelerating a motor from rest to normal speed.

OAW: Overall width; the frame dimension measured to the outside of conveyor frame.

Pop-Out Roller: A special load carrying roller mounted in such a manner as to pop out when foreign objects are introduced between the belt and roller.

Pressure Roller: Roller used for holding the driving belt in contact with the load carrying rollers in a belt driven live roller conveyor.  There are one half as many pressure rollers as tread rollers. NOTE: In many units, rollers are lighter than the tread rollers.

RC: Roller Centers; The distance between center lines of adjacent rollers. For curves (other than chain driven live roller) roller centers are measured at the inside radius. Common measurements are 1 1/2″, 3″ , 4 1/2″ . 6″ , 8″ , 9″ and 12″.

Return Rollers: Mounted underneath unit. These rollers support the return run of the belt. Proper alignment or “squaring” of return rollers is a crucial element in maintaining proper belt tracking. Also referred to as idler rollers.

Slave Drive: A conveyor drive powered from another conveyor instead of having its own prime power source.

Snub Roller / Snub Pulley: Any roller or pulley used to increase the arc of contact between a belt and drive or tail pulley. Note that a drive or tail pulley should not be confused with a sheave. A sheave is designed for V-belts and pulleys are designed for use with flat belts.

Tracking: The process of adjusting return (or idler) rollers, pulleys and loading conditions which will correct any tendency of the belt to run other than centrally.

Transfer: Any device that transfers objects onto or off of a conveyor line or from one conveyor line to another.

Zero Pressure Accumulation Conveyor: A type of conveyor designed to eliminate build up of pressure between adjacent packages or cartons.

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