FLCH-SPD,
737 Classic autoland x-w limit is 15kts & 737NG limit is 20kts (or 25kts with rudder channel). The aircraft simply autolands with the crab left on – just like in that crosswind video with the Portuguese subtitles that is doing the rounds! Once it has touched down the momentum seems to send the aircraft forward rather than in the direction of the gear, directional control is not a problem.
Gullyone,
The 737 gear does not pivot, although there is a bit of “play” in the links but not enough to increase any crosswind limit.
ASFKAP
I have never heard of dual-dual, I still have a lot to learn about this aircraft!
S&L