Need replacement for P.E. Del Mar roller

This aluminum sliding door has no name printed on it but has a nice wood handle on the interior. The roller housing is enclosed in the bottom rail that accomodates up to a 3/4" wide roller. Because the roller assembly contains some rust because of previous water damage my measurements are best estimates with a tape measure. The width seems to be 3/4"  at the top the length seems to be 2 5/8" but with the ears sticking out they measure 3" The width starts with like 1 1/8 or maybe more to 1 3/8" at the wheel end. The actual wheel is metal and is most likely 1 1/4 but could be 1 1/2" you be the judge.