hacker and lehner motor question

[Ryu James]

i am wondering if it is normal on a hacker or lehner motor for the shaft to spin very easily when turned with your fingers? my neu motors are hard to turn with just your fingers and are kind of "notchy" like they are grabbing but the hacker and lehner i have just roll super smooth. does this mean the magnet is fried or is this just normal for these german motors?