I have 70 amp. Breaker, and has 2 unit /motors to be hooked up
Combined load of motors 49 amps.?

The breaker is intended to protect the wire which for 70amp would be #6. You can connect (2) loads to one breaker, as long as each of the loads is protected at their rating, usually done through a disconnect switch with fuses. Additionally the breaker should not be loaded more than 80% for a continious load (more than 3 hours) and for a motor load, should be sized 125% of the FLA.

I have 70 amp. breaker,,and has 2 unit /motors to be hooked up
combined load of motors 49 amps.??????

Are you asking how this should be done? Or are you asking if it is OK?

The breaker is intended to protect the wire which for 70amp would be #6.
This would only be true for THHN conductors in conduit. #6NM cable is only good to 60A