In general an axle is a centre shaft for a rotating wheel or gear. So In general axle shaft is on which the hub of the wheel is mounted. In a rear wheel drive, on side on the axle is attached to the differential assembly and the other side is attached to the hub.
The average cost of a vinyl replacement window is between $400-$575 per window for a double hung. That price includes the cost of the new vinyl replacement window and the installation of it. The big difference in price would be for reasons like the manufacturer of the vinyl window (which series you go with in their line), grids, low-e and argon gas for example. Vinyl casement pocket replacement window:
Average Window Replacement Cost | Replacement Windows Costs. 1  Replacement window costs are always at the top of the list for any homeowners planning to renovate or upgrade theier home windows. 2  On average, replacement windows cost between $7,000 and $20,000 for the typical home.