Spicer Steer Axles Application Guidelines - Manual (Page 9)

AXAG400 – February 2007 front < 3 >
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1- Model Nomenclature and Exploded Views
E – Series Steer Axles Nomenclature
On-Highway / Line Haul / Regional Haul usage
Beam Type
I – I-Beam Standard Overall Width
W – I-Beam Wide Track over 96” OAW
I – Series Steer Axles Nomenclature
On/Off-Highway / Medium Duty / Regional Haul / Severe Duty usage
Beam Type
W – I-Beam Wide Track over 96” OAW
SG – Specialty Axle