Page 26 - ConveyorBeltMaintenanceManual2010

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INSTALLATION, MAINTENANCE & TROUBLESHOOTING GUIDE
i n s t a l l a t i o n
TURNOVERS
What is a belt turnover? A belt turnover is used for keeping the dirty side up on the return side for cleaning purposes.
Goodyear Engineered Products’ belt turnover recommendation is as follows:
Vertical rolls should be located near the midpoint and 45-degree rolls located at quarter locations of turnover. The midpoint
rolls should be on opposite sides of the belt and offset a few inches from each other so that a component of belt tension can
provide pressure against each. They should be adjustable in all directions, as their ideal ultimate position rarely can be
predetermined. These rolls aid in belt training, help minimize belt-buckling tendencies and help stabilize a belt from excess
flopping where winds are encountered.
The turnover must have two terminal pulleys (inbound and outbound), as shown in the picture below. This is to insure that
the belt is lying flat on the first bend pulley entering the transition and the last bend pulley leaving the transition.
Make sure the spacing between the vertical rolls is 2 ft (see picture). Each vertical roll also needs to be offset by 1” inward
so that there is full belt contact on both rolls.
Each end pulley should have some adjustment in the plane of the approaching belt for training purposes.
The turnover length is determined by the belt width, type of construction and the belt tension at the turnover. Contact
Goodyear Engineered Products for minimum turnover length after system analysis is performed.
Short transition distance can cause the belt to collapse in the turnover or cause excessive edge tension, which can in turn
cause premature splice failure.
Pulleys
Rollers
L
L/4 L/4
2 FT
L/4 L/4