SAF-HOLLAND introduces its 13.5k capacity, NEWAY LSZ Auxiliary Steerable Lift Axle Suspension System. With a 17.5-in. package size, the LSZ is a minimum of 4 in. up to 10 in. shorter than ...

However, it's worth noting that neither pusher nor tag axles, or lift axles in general, propel the truck forward — only the drive axles do. Lift axles can also be either steerable or non-steerable.