Tennsmith 36A - Page 7

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To start, disconnect the main air supply connection to the shear.

t side

a ¼

e of

ches

1. Loosen the jam nuts (54) that lock the turnbuckle in position.

2. Move the cutter bar down by tightening each turnbuckle. To avoid putting the cutter bar in a bind, tighten each

turnbuckle evenly. The first checkpoint when verifying or changing the blade gap is 2 inches from the righ

end of the blade facing the machine. Make sure the upper blade intersects the lower blade by 1/8”. Once yo

have moved the cutter bar into the desired position, use a set of shim feeler gauges to verify the blade

clearance between the two blades. The second checkpoint is the center of the shear, and the last is 2 inch

from the left end of the blades.

3. To close the gap on the either the left or the right ends of the blade, loosen the table bolts(24) for the particular

end you are adjusting, and loosen the 9/16” adjustment screw (22) located in the front of your side panel by

turn. Next tighten the set screw (21) to move the lower blade towards the upper blade. When you have

reached the desired gap verified by your feeler gauge, tighten the adjustment screw (22) to ensure the prop

tension on the set screw. To open the gap, reverse the previous procedure.

4. After you have reached the desired gap, tighten the table bolts (24) on each side.

5. The blade gap in the center of the shear is controlled by the adjustment screw (40) located on the backsid

the cutter bar of the shear. To close the gap, tighten the screw in ¼ increments until you have reached the

desired gap.

6. After you have adjusted the shear gap to the desired settings, move the cutter bar back to its original settings

This is called the pitch or rake of the blade:

Rake angle settings:

MODEL 36A

Use a marker to mark the shear bed 2 inches to the from the right side edge of the table. Next, measure over 32 in

from the right side edge of the table and make another mark. Starting at the right hand side (facing the machine) at the

designated mark on the table, rotate the turnbuckle (55) until the distance between the top and bottom blades is

approximately 3/8 of an inch. At the opposing end, repeat the procedure allowing 1 ¾ inches clearance between the

upper and lower blades. After you have the desired clearance between the upper and lower blades slightly adjust the

turnbuckles so that they have an equal amount of tension. That is, if one turnbuckle has more play or lost motion in it

than the other, it should be readjusted accordingly. Once the rake has been set and equal tension verified between the

turnbuckles, retighten the jam nuts (54) and lock the turnbuckles in place.

MODEL 52A

Use a marker to mark the shear bed 2 inches to the from the right side edge of the table. Next, measure over 48 inche