Subscribe to a magazine

Portal Axle

Back to article View Gallery
17 of 17
On a portal axle, there is a gear reduction box that slows the axle shaft speed a second time. This means that the final output stub axle must be very strong to withstand the increased torque due to the gearing at the portal. However, the torque present at the differential and its axle shafts is effectively less when compared to a standard non-portal design.