CHAPTER 8
DRIVE SYSTEM
26
DRIVE SYSTEM
(Figure 16, Figure 17 & Figure 18)
The drive system of your machine consists of eight top and eight bottom polyurethane drive rollers.
They are divided into groups of 2 per assembly making 4 Top Drive Roll Assemblies and 4 Bottom
Drive Roll Assemblies. They are connected together via chain and sprocket and there are chain
tensioner’s on each assembly. The drive system is powered by a hydraulic motor which transfers
power to the drive assemblies using spur gears and a top and bottom drive shaft.
1. Clearance between the top and bottom drive rollers is factory set at ¾ of a turn of
pressure past the point of contact. This will drive material up to 22ga. though the
machine without the need for adjustment. If adjustment becomes necessary due to
slippage, you can add pressure. Do not add more than ¼ turn beyond the factory
setting. It is important to adjust only one end of each assembly at a time to maintain side
to side alignments.
To add pressure: Loosen two Lock-Down Bolts “B” 1/8 of a turn. Loosen lock nuts on
two corresponding Jack Bolts “A”. Tighten Bolts “A” 1/8 of a turn. Re-tighten 2 lock
nuts on Jack Bolts “A” to lock in adjustment. Repeat this procedure on the other end of
the Drive Assembly and repeat for the other 3 drive assemblies. Test for result and
repeat one more time if necessary.
To remove pressure: Loosen two lock nuts on Jack Bolts “A”. Loosen two Jack Bolts
“A” 1/8 of a turn. Tighten two corresponding Lock-Down Bolts “B” 1/8 of a turn.
Tighten two lock nuts on Jack Bolts “A” to lock in adjustment. Repeat this procedure on
the other end of the Drive assembly.
2. There are three different chain tensioners on your machine.
A. The first are located in slots on the side plates of the Drive Roll Assemblies. They
follow the chain locations alternating from one side to the other. To adjust, slightly
loosen the nut on the bolt holding the tensioner sprocket in place. Using a dead blow
hammer tap the tensioner assembly toward the drive roller until the chain is snug.
Lock into position by tightening the bolt on the assembly.
B. The second type is similar. These are located on the top and bottom spreader bars
located between the Drive Roll Assemblies. These are used in the same way except
there is a bolt located in the edge of the slot on the assembly used to push the
tensioner assembly toward the Drive Roller to tension the chain.
C. The third is located on the Top #1 Spreader Bar between the sprocket and drive
roller. (see detail ‘A” Figure 18) Loosen two “D” bolts enough so that you can move
the tensioner assembly up toward the chain until snug. Re-tighten the two “D” bolts.
3. The chains used in this system are #50 Roller Chain. See Figure 18for chain locations
and lengths if chain replacement is necessary.
4. The polyurethane drive rollers will eventually need cleaning. This will become evident
when they start leaving a stripe the width of the drive roller on the formed panels that
doesn’t come off easily or if you run material with an oily film on it. Avoid cleaning the
drive rollers with harsh chemicals or solvent. These products will attack the
polyurethane and cause irreversible damage. Use of these products will void the
warranty on the drive rollers.
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