Frequency
The number of disturbances that occur per unit of time.
Front Coning
When the wheel requires the cone to center the wheel on the balancer’s shaft from the
front. Also referred to as Front-Cone Mounting.
Harmonic
A vibration that is identified by the number of occurrences per revolution. For example, a
1st harmonic vibration has a once per revolution vibration component.
Hertz
A unit of frequency: one disturbance per second.
Hub Centric
The wheel is centered using the center hole of the wheel.
Lateral Runout
The amount of side-to-side movement as the tire/wheel assembly rotates.
Lug Centric
The wheel is centered using the lugholes rather than the wheel center hole.
Magnitude (Amplitude)
The amount of force or the intensity of the vibration.
MatchMaker™
Allows the operator to match up four identical tires on identical rims, to achieve the
optimal combination of match mounting.
Natural Frequency
The point at which an object will vibrate the easiest.
Order
The number of disturbances per cycle (rotation). For example, a 1st order vibration
occurs once per cycle, and a 2nd order vibration occurs twice per cycle.
P, P/SUV, LT
“P Tires” refers to passenger tires, “LT Tires” refers to light truck tires, and “P/SUV Tires”
refers to P-Rated sport utility vehicle tires.
Phase
The position of a vibration cycle relative to another vibration cycle in the same time
reference.
Phasing
The cycle pattern of two or more vibrations that overlap and combine to increase the
overall magnitude.
Pressure Ring
The accessory used to prevent the wing nut from contacting the wheel when on the
balancer shaft.
Quick-Thread™
Motor assisted threading of the wing nut for quick installation and removal.
Radial Force Variation (RFV)
A term describing a measurement of the tire uniformity, under load, measuring the
variation of the load acting toward the tire center.
Radial Runout
A condition where the tire and wheel assembly is slightly out of round forcing the spindle
to move up and down as the vehicle rolls along a smooth surface.
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6. Glossary DSP9200 Series Balancer Operation Instructions
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