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:
Cost to Install Replacement Windows. Updated: August 2017. For a basic project in zip code 47474 with 1 window, the cost to Install Replacement Windows starts at $433 - $671 per window. Because job specific configurations and options will result in significantly different costs, homewyse uses industry-standard algorithms and professionally screened cost data to create estimates customized to the specific options of YOUR replacement window installation project.