3
8
Operating Instructions - Low Backlash Planetary Gear Units
Mounting output elements
3.6
Mounting output elements
Fig. 3 shows a sample mounting device for installing couplings (3) or hubs onto motor
or gear unit shaft extensions (4). It may be possible to dispense with the thrust bearing
(2) on the mounting device.
When input and output elements are mounted on PSF series units, the shaft nut on
the input and output shaft must not be used as a stop for transmission elements (belt
pulley, pinion gear, etc.).
When input and output elements are mounted on PSE series units, the shaft shoulder
(Fig. 3, no. 1) is allowed to be used as a defined stop point.
Fig. 4 shows the correct mounting arrangement of a gear or sprocket in order to avoid
impermissibly high overhung loads.
•
Only use a mounting device (see Fig. 3) for installing input and output elements. Use
the center bore and the thread on the shaft end for positioning purposes.
•
Never drive belt pulleys, couplings, pinions, etc. onto the shaft end by hitting
them with a hammer (damage to bearings, housing and the shaft!).
•
In the case of belt pulleys, make sure the belt is tensioned correctly (in
accordance with the manufacturer’s instructions).
•
Transmission elements should be balanced after fitting and must not give rise to any
impermissible radial or axial forces (see Fig. 4 / for permitted values, see the "Low
Backlash Planetary Gear Units" catalog).
50278AXX
Fig. 3: Sample mounting device
50279AXX
Fig. 4: Correct mounting arrangement of a gear or sprocket
1
2
3
4
X
1
F
X1
X
X
1
1
X
1
F
X1
FF
X1
X1