Technical data

16-14 Notes Application MHD Sychronous motors
DOK-MOTOR*-MHD********-PR05-EN-P
16.7 Output Shaft and Motor Bearing
Plain Shaft
The standard design recommended for MHD motors provides a friction-
locked shaft-hub connection without play and excellent running
smoothness. Use clamping sets, clamping sleeves or clamping elements
to couple the machine elements to be driven.
Output Shaft With Featherkey
The optional featherkey according to DIN 6885, Sheet 1, version 08-1968,
permits keyed transmission of torques with constant direction, with low
requirements for the shaft-hub connection.
1
2
3
4
nut_passfeder.fh10
(1): Fitting spring
(2): Keyway
(3): Motor shaft
(4): Centering hole
Fig. 16-19: MHD output shaft with featherkey
The machine elements to be driven must additionally be secured in the
axial direction via the centering hole on the end face.
CAUTION
Shaft damage! In case of intense reversing
operation, the seat of the featherkey may
deflect. Increasing deformations in this area can
then lead to a break of the shaft!
⇒ Preferrably, plain output shafts should be used.
MHD motors are balanced with the complete featherkey. Hence, the
machine element to be driven must be balanced without a featherkey.
The keyway length in the hub is independent of the length of the
featherkey.
Modifications to the featherkeys may be made only by the user
himself and on his own responsibility. Bosch Rexroth do not give any
warranty for modified featherkeys or motor shafts.
Balancing with a complete
featherkey