Conveyor Pulley is manufactured as per customer requirement,with
main design under national standard,quality inspection focusing on
shaft core,welded joint,rubber material and hardness,dynamic
balance and so on for longer product life time.Drive/Head Pulley -
A conveyor pulley used for the purpose of driving a conveyor belt.
Typically mounted in external bearings and driven by an external
drive source.Return/Tail Pulley - A conveyor pulley used for the
purpose of redirecting a conveyor belt back to the drive pulley.
Tail pulleys can utilize internal bearings or can be mounted in
external bearings and are typically located at the end of the
conveyor bed. Tail pulleys commonly serve the purpose of a Take-Up
pulley on conveyors of shorter lengths.Snub Pulley - A conveyor
pulley used to increase belt wrap around a drive pulley, typically
for the purpose of improving traction.Take-Up Pulley - A conveyor
pulley used to remove slack and provide tension to a conveyor belt.
Take-Up pulleys are more common to conveyors of longer lengths.Bend
Pulley - A conveyor pulley used to redirect the belt and provide
belt tension where bends occur in the conveyor system.The
specification of pulley:Drive Drum: is the main component of power
transmission. The drum can be divided into single drum (the angle
of the belt to the drum is 210 ° ~ 230 °) , Double Drum (the angle
of the belt to the drum is up to 350 °) andmulti-drum (used for
high power) . Bend Drum: is used for changing the running
direction of the conveyor belt or increasing the surrounding angle
of the conveyor belt on the driving roller, and the roller adopts a
smooth rubber surface . The drum shaft shall be forgings and shall
be nondestructive tested and the inspection report shall be
provided. The Various Surface of Pulley:Conveyor pulley
lagging is essential to improve conveyor belt performance, the
combination of our pulley lagging can reduces belt slippage,
improve tracking and extends life of belt, bearing & other
components.PLAIN LAGGING:This style of finish is suitable for any
pulley in the conveyor system where watershed is not necessary. It
provides additional protection against belt wear, therefore,
increasing the life of the pulley.DIAMOND GROOVE LAGGING:This is
the standard pattern on all Specdrum lagged conveyor pulleys. It is
primarily used for reversing conveyor drive pulleys. It is also
often used to allow bi-directional pulley rotation, and the pattern
allows water to be dispersed away from the belt.HERRINGBONE
LAGGING:The herringbone pattern's grooves are in the direction of
rotation, and offers superior tractive properties. Each groove
allows water and other liquids to escape between the face of the
drum pulley and the belt. Herringbone grooved pulleys are
directional and should be applied to the conveyor in a manner in
which the grooves point toward the direction of the belt
travel.CHEVRON LAGGING:Some customers specify that the points of
the groove should meet - as done in Chevron styled lagging. As
before with the herringbone style, this would be used on drive drum
pulleys and should be fitted in the correct manner, so as to allow
proper use of the pattern and water dispersion also.CERAMIC
LAGGING:The Ceramic tiles are moulded into the lagging which is
then cold bonded to the drum pulley. This style of finish allows
excellent traction and reduces slippage, meaning that the belt
tension is lower and, therefore as a result, increases the life of
the pulley.WELD-ON STRIP LAGGING: Weld-On Strip Lagging can be
applied to bi-directional pulleys, and also has a finish to allow
the easy dispersion of water or any fluids between the drum pulley
and the belt.The Components of Pulley:1. Drum or Shell:The drum is
the portion of the pulley in direct contact with the belt. The
shell is fabricated from either a rolled sheet of steel or from
hollow steel tubing.2.Diaphragm Plates: The diaphragm or end
plates of a pulley are circular discs which are fabricated from
thick steel plate and which are welded into the shell at each end,
to strengthen the drum.The end plates are bored in their centre to
accommodate the pulley Shaft and the hubs for the pulley locking
elements.3.Shaft:The shaft is designed to accommodate all the
applied forces from the belt and / or the drive unit, with minimum
deflection. The shaft is located and locked to the hubs of the end
discs by means of a locking elements. The shaft and hence pulley
shafts are often stepped.4.Locking Elements:These are
high-precision manufactured items which are fitted over the shaft
and into the pulley hubs. The locking elements attach the pulley
firmly to the shaft via the end plates.5.Hubs:The hubs are
fabricated and machined housings which are welded into the end
plates.6.Lagging: It is sometimes necessary or desirable to
improve the friction between the conveyor belt and the pulley in
order to improve the torque that can be transmitted through a drive
pulley. Improved traction over a pulley also assists wit
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