This question is a common one and it's uterly meaningless.
It relates to the manufacturers name for what we know as the "Hybred" D35/28 axle.
'93-97 NON-4.0 rangers with 3.45 gears came with a D35 pig with D28 guts inside it
(there being no D35 3.45 gears the "True" D35 using 3.55's instead)
The ASSumption by some programmer at whatever company wrote the parts lookup software was that because Dana calls that '93-97 "Hybred" axle a "Dana 28"
that it is the same as the '83-90 Dana 28, and that it requires the old "small bearing"
D28 rotors.
My honest heartfelt recommendation to anyone with a 1993-up Ranger is LIE to the jackass behind the counter and tell them you have 3.55's, OTHERWISE he is likely to give you the WRONG parts.
YOu must do the same thing to buy axle shaft bearings and seals
for the rear axle, because some idiot (probably the same one)
ASSumed that because a ranger is a "Truck" and the 4.0's had an 8.8" axle
that it took the same bearings and seals as an F-150....
the Rangers use 28-spline axles (like most Ford Cars)
while the F-10 (and explorers) use 31-spline axles
and thus take the larger bearings and seals.
You aren't the first one to have this question...
Lord knows I've typed this same information close to 100 times over the years...
AD