Gullco KR-200-L - Manual (Page 10)

8
LOADING
WARNING! Lower work-pieces onto the rolls gently. DO NOT DROP WORK-PIECES ONTO
THE ROLLS. Impact and shock loads are many times greater than the "dead-
weight” of the work-piece. Dropping loads onto the rolls can result in damage!
If more than one idler roll is to be used, be sure that the work-piece touches all wheels that are
intended for support. Ensure that the work-piece rests on the full face-width of the wheels to avoid
damage.
If one end of the work-piece is heavier than the other, be sure that the roll supporting the heavier
end is not being overloaded in weight capacity.
Capacities of turning rolls are stipulated to turn cylindrical, concentric work-pieces. If your work-
piece has any eccentric loads at all, be sure to check carefully to avoid overloading the drive. Even
small eccentric loads can quickly overload the drive. Overloading the rolls, either by weight or
eccentricity, could cause the wheels to stall. Under this condition the knurled drive wheel could
continue to rotate and act as a milling cutter on the outside diameter of the rubber wheels.
Wherever possible, counter weights should be used to balance eccentric loads. Take into
consideration the additional weight and distribution of the counterbalance.
Attention should be given to the proximity of the rubber wheels with respect to heat zones through
preheating, cutting, etc..
MAINTENANCE
The Gullco "Kamel", power turning rolls and idler rolls are heavy duty, robust pieces of equipment,
and under normal conditions, they will give you years of trouble free service, if they are operated
within the limits of their expected use and if the following maintenance points are adhered to:
Clean all excess dust, spatter, slag etc. from the rolls regularly. Do not allow any foreign material to
impede operation.
Periodically check the power roll for tension of the drive system. Positively disconnect the power
cord from the power source before attempting service. To test the tension of the drive system,
attempt to turn one wheel at a time by hand. If it takes reasonable force in order to make each
wheel slip, then the tension is set correctly. If one or both wheels slip with ease, then adjustment is
required. To adjust the drive tension, loosen the lock nut (item # 42 - drawing # KR-200) that
secures the motor mounting plate. Then by sliding the motor mounting plate (item # 47 - drawing #
KR-200) along the length of the “Kamel” roll and tightening the adjusting bolt (item # 38 - drawing #
KR-200), the knurled drive wheel can be positioned so that it is applying a snug pressure equally to
both rubber wheels. The lock nut (item # 42) can then be retightened. Test, once again, that the
tension is set correctly. Do not tighten the tensioning system any more than necessary.
Excessive pressure could cause damage to the output shaft of the drive motor as well as tearing
the rubber treads of the wheels. Do not attempt to compensate for a "Gouged Tire" by increasing
the drive pressure; instead replace the wheel with an undamaged one.
Every two hundred and forty (240) hours, the wheels should be lubricated with a general purpose,
light duty grease. A grease nipple is provided in the side of each wheel.