Instruction Manual PSx3xxPL
9
The rotation lock is made via the pin (in the picture below the hollow shaft) into a
suitable bore as rotary torque support. This hole must be slightly larger than the
diameter 6 h9 of the pin. An oblong hole or slot with a slightly larger width
(recommended: 6.05...6.10 mm) than the dimension of the pin diameter is optimal.
The backlash when changing the direction of rotation has a direct influence on the
positioning accuracy and can lead to damage to the PSx3xx with very large backlash
(a few mm) due to the impact load.
The PSx3xx must have a little gap on all sides when mounted, as it can
move axially and/or radially during positioning if the hollow shaft and solid
shaft are not 100% aligned. This "staggering" is not a defect of the PSx3xx
and also has no influence on the function, as long as it can move freely.
Versions with higher torques (from 10 Nm):
Here the force connection is made via a feather key DIN 6885-A5x5x12.
The clamping ring is not freely rotatable but consists of two halves, the fixed part of
the hollow shaft and the loose clamping clamp. The keyway is located in the half that
is fixed to the output shaft. When sliding onto the shaft to be driven with the key
inserted, its angular position must be aligned with the keyway in the PSx3xx. After
pushing on, the PSx3xx is fixed with the 2 screws in the flexible clamping ring half.
Make sure that both screws are tightened as equally as possible (tightening torque of
the screws with 3 mm hexagon socket: 1.5 Nm).
The information on torque support applies in the same way as described above.
For PSE30x-14, PSE32x-14, PSS30x-14 and PSS32x-14, the position of the anti-
rotation lock can be set at greater distances by unscrewing the base cover, turning it
180° and then screwing it back on. When screwing on, make sure that the seal is
correctly inserted in the floor.
For torques > 5 Nm we recommend to choose the greater distance.
