6
5. TEST SETUP and OPERATION
5.1 Setting up Indenter and Anvil
Select the proper indenter according to the desired load in
accordance with ASTM E-10. Indenters consist of a ball
holder, cap and ball. Clean any oil from the surface of the
ball and the ball holder before installing. Spread a little
Vaseline on the spherical indentation of the ball holder. In-
stall the tungsten carbide ball, and screw on the indenter cap.
The test is invalid if ball is loose, so inspect the ball indenter.
Screw the indenter into the main shaft. Then set the anvil (24
on the elevating screw (22).
5.2 Selection of Test Load
Place the Hanger (3) on the knife edge at the end of the large
lever for 187.5 kg test load. Add 62.5 kg weight for 250 kg
test load; add a 250 kg for 250 kg total load, add a 500 kg
weight for 1000 kg test load, and so on for the other test
loads up to 3000. 750 kg load may be set up with 187.5, 62.5
and 500 kg weights. Make certain each weight is oriented
so the slot is pointing in a different direction than the weight
underneath. This limits the ability of the weights to fall off the
tester if accidentally bumped or if a test cycle is initiated with-
out a test sample against the indenter
Selection of Common Test Loads (in kg.)
Add different weight combinations according to this diagram for desired load.
62.5 187.5 250 500 750 1000 1500 3000
500
500
500
500
500
187.5
62.5
250
500
500
187.5
62.5
250
500
187.5
62.5
250
500
187.5
62.5
187.5
62.5
250
62.5
187.5
187.5
no weights or
hanger
Load Lever
Hanger
Weight
slot
Showing weights with slots
oriented in different direc-
tions >
Ball
Cap
Holder
INDENTER