The new cheaper quality bearings are coming shipped with only a scant amount of cheap grease, If you can find proper wheel bearing grease in Pakistan like FUCHS renolit LX-PEP2 it would be very beneficial to open the bearing wash out the original grease with petrol and fill the races only 50% and install all the balls and cages again.
The other bit is that the person using the press should know what they are doing, one mistake and the bearing will wear out in less than 10,000 kms.