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EM 9250
Operator’s manual
GLOSSARY
Below is a brief description of some technical terms used in this manual.
SELF-CALIBRATION
This procedure calculates suitable correction coefficients starting from known operat-
ing conditions. It improves the machine accuracy by correcting to a certain extent the
calculation errors that may result from the alteration of the machine's features over the
course of time.
AWC
Auto Width Calculation acronym
AWD
Auto Width Device acronym
CALIBRATION
See SELF-CALIBRATION.
CENTRING
Procedure for positioning the wheel on the wheel balancer shaft to ensure that the shaft
axis corresponds to the wheel rotation axis.
BALANCING CYCLE
Sequence of operations to be performed by the user and the machine from the begin-
ning of the spin until the wheel is braked to a stop after calculating the unbalance values.
CONE
Conical element with a central hole which, when inserted on the wheel balancer shaft, is
used to centre the wheels having central holes with a diameter ranging between maxi-
mum and minimum values.
DYNAMIC BALANCING
Procedure for unbalance compensation by applying two weights, one on each of the two
wheel sides.
STATIC BALANCING
Procedure for correcting only the static element of the unbalance, by applying only one
weight, usually at the centre of the rim well. Accuracy increases as the width of the wheel
decreases.
FLANGE (of the wheel balancer)
Circular crown-shaped disk against which the disk of the wheel mounted on the wheel
balancer rests. Also used for keeping the wheel perfectly perpendicular to its rotation axis.
FLANGE (adapter - centring accessory)
Device for supporting and centring the wheel. Also used for keeping the wheel perfectly
perpendicular to its rotation axis.
Mounted on the shaft of the wheel balancer by means of the central bore.
FSP
Fast Selection Program acronym
RING NUT
Wheel blocking device on the wheel balancer, fitted with elements for coupling with the
threaded hub and side pins for tightening it.