motor AK17/1.10F6LN1.8 too weak? (2 replies)

the motor i have is the AK17/1.10F6LN1.8, using Marlin i can only move then if they have no load and under a feed rate of 5 even when the driver is giving MAX amps to the motor, i did check if the wiring was right the multi-meter says yes, the psu is a 12v 5a like this one: aliexpress.com

datasheet: link


so cold it be that they are too week?