There are no pro-friction bearings, so 'antifriction bearing' tells us nothing.
There must be thousands of major types of antifriction bearings.
You need to get in touch with the motor manufacturer and find out exactly what bearings are to be supplied.
The bearings at each end of the motor are usually different, to allow for differential thermal expansion.
The bearings will be still different if the motor is specified for use with the shaft axis vertical, because motor manufacturers use the cheapest bearings possible, so the default, for shaft axis horizontal, is bearings that cannot support the rotor's weight when the shaft is vertical.
Mike Halloran
Pembroke Pines, FL, USA