BECKHOFF AM8100 - Manual (Page 20)

Mechanical installation
7.2 Flange mounts
Information on correct flange­mounting of the motors is provided below.
Size Bore diameter
[mm] Cheese­head screw
DIN EN ISO 4762 (8.8) Tightening torque
[Nm] Plain washer
DIN EN ISO 7089
AM811x 4.3 M4 x 16 2.7 4.3
AM812x 5.5 M5x16 5.5 5.3
AM813x 6.0 M5x16 5.5 5.3
Synchronous servomotor AM8100 20 Version 1.1