Tennsmith LM1010-2x, Maintenance Manual, Page: 10 / 41

9
BLADE CLEARANCE
The blade clearance on the LM1010 was set at the factory to .004 in. on the ends of the
blades with a .003 gap in the center of the machine. At this setting, your shear should
provide satisfactory results over a broad range of materials and thickness. However, when
shearing lighter gauge materials a tighter blade gap may be desired. Also, upon turning
the blades to a new edge or after re-sharpening the blades, the blade clearance must be
reset.
CAUTION:
Checking the blade gap will require removing the wire
finger guard (80). Do not operate the shear without the guard in place.
To check the blade clearance, set the machine to the jog mode and jog
the cutter head down so that the blades just overlap at the point at
which the inspection is to take place.
WARNING:
Disconnect power to the machine prior to making the
measurement. Use a feeler gauge to make the measurement.
The blade clearance adjustment is made in the following manner:
1. Loosen the two table locking bolts (49) located near the mid-
section of each side
panel and then retighten the bolts hand tight.
2. Loosen the four table bolts (43), again reasserting only a slight amount of pressure
back to each one.
3. The table positioning screws (20) located at both ends of the table are the means used
to achieve the proper blade clearance. The forward screw pushes the table and bottom
blade toward the cutter head. Likewise, the rear screw adjusts the blade back, thus
increasing the clearance. To set the clearance, place a feeler gauge of the same thickness
as the desired clearance between the two blades. Adjust the forward screw outward until
the feeler gauge is locked between the blades and cannot be removed. Then adjust the
rear screw in the opposite direction until the gauge stock is freed. The opposing actions
of the screws serve to attain a tight, positive setting.
4. After setting the clearance on both ends of the machine, retighten the four table bolts
and the two locking bolts.
5. The blade clearance in the center of the machine controlled by adjusting the center
truss located at the rear of the cutter head. The blade clearance in the center of the shear
should be set at least .001 closer than the dimension chosen for the ends of the blade.
6. Reposition all protective guards and covers.
Please contact the factory if you have any question regarding this procedure.