Model No.ME-8236
Operation
7
012-13762D
Loosen but do not remove the hex nut on each clamp. The
jaws of the clamp are spring loaded, so the moveable jaw
will separate from the fixed jaw. Screw the clamp with the
shorter threaded section into the load cell. Put the threaded
section of the other clamp up through the hole in the load
bar, and use the sample nut to hold the upper clamp. NOTE:
Do not completely tighten the sample nut yet.
Carefully place one end of a coupon between the jaws of the
bottom clamp. While holding the moveable jaw to keep it
aligned with the fixed jaw, use the tee-handle and socket to
tighten the hex nut. CAUTION: Each coupon is fragile. Do
not let the moveable jaw twist out of alignment with the
fixed jaw as this might bend the coupon.
Turn the upper clamp so that it is aligned with the lower
clamp. Adjust the position of the load bar so that you have
room to carefully put the other end of the coupon between
the jaws of the upper clamp. Keep the movable jaw aligned
with the fixed jaw so that the coupon does not twist or bend.
Once again, tighten the hex nut.
Hold the upper clamp so it remains parallel to the lower
clamp and tighten the sample nut slightly to remove any
slack in the coupon.
Attach the Safety Shields
Attach the Velcro® hook material on the two safety shields
to the Velcro® loop material on the front and back of the
Load Bar and adjust the position of the shields if needed.
Materials Shear Accessory (ME-8239)
The Materials Shear Accessory consists of two pieces of
hardened steel - a front piece and a back piece - held together
by a pair of permanent screws, and a package of Materials
Shear Samples. The front piece can slide vertically relative
to the back piece, which is designed to be mounted on the
load cell using an included hex key (allen wrench). The two
pieces have pairs of matching holes with four different diam-
eters to fit a variety of samples for testing. The hole diame-
ters are approximately 1/16”, 3/32”, 1/8”, and 5/32”. The
Materials Shear Samples includes three 1/8” diameter rods
each of three metals: aluminum, brass, and mild steel.
NOTE
:
Do not use a sample with a hardness greater
than mild steel.
Use the two mounting screws and the included hex key
(allen wrench) to attach the back piece of the Materials Shear
Accessory to the top of the load cell. Note that when the
front piece is raised by hand as far as it will go, the holes in
the front piece align with the matching holes in the back
piece.
Insert the test sample through the pair of holes that best
match the diameter of the sample. Use a sample that is long
enough so that it extends about 1/4” (6 mm) beyond the front
and back pieces. Doing this makes it easier to remove the
sample remnants from the accessory after the test.
Movable
Jaw
Fixed
Jaw
Hex Nut
Upper
Clamp
Lower
Clamp
Metal
Coupon
Plastic
Coupon
Figure: Materials Coupon Adapter
Front
Piece
Back
Piece
0.067”,
1.7 mm
0.099”,
2.5 mm
0.161”,
4.0 mm
0.130”,
3.3mm
Mounting
Screws
