Wittenstein Alpha V-Drive Economy, Operating Manual

Page: 23 / 27

V-Drive+/V-Drive economy Operating Manual
Page en-21
Release: 30.04.2019 2022 D005924 Index: 11
9.2.1 Dismantling of a slip-on gear mechanism with feather key
Fig. 9.1
If the maximum insertion length has not been
exceeded during assembly, the end washer
may be used as a forcing washer.
 Remove the screw in the end
washer (B) and take it off.
 Take off the retaining ring (C).
 Place a cylinder pin (A) in the centring
bore of the machine shaft to support it.
 Insert the end washer (B) and replace
the retaining ring (C).
 Use an appropriate screw (D) to pull
the hollow shaft from the machine shaft.
 The table below lists the thread diameter of the required forcing screws.
Gearbox size Forcing screw
040 M 8
050 M 12
063 M 12
080 M 16
100 M 20
Table 9.1
 Remove the gearbox from its position with great care, so as to safeguard
the gearbox and adjacent parts against damage.
9.2.2 Dismantling of a slip-on gear mechanism with shrinkable disk
 Loosen the clamping screws one after another in multiple circular passes.
 If the outer ring does not detach itself from the inner ring, remove a few of the clamping
screws and screw into the adjacent extraction threads.
 Remove the gearbox from its position with care, so as to safeguard the gearbox and
adjacent parts against damage.

The removed shrink disk does not need to be disassembled and regreased prior to
bracing again. Only if the shrinkable disk is dirty should it be disassembled and cleaned.
Attention
Cleaned shrink disks can have other coefficients of friction. This can lead to damage during
mounting.
 Lubricate the inner smooth surfaces of the shrink disk using a solid lubricant with a
coefficient of friction of
μ
= 0.04.

The following lubricants are permissible for relubricating the shrink disk:
Lubricant
Commercial
form
Manufacturer
Molykote 321 R
(lubricating varnish)
spray DOW Corning
Molykote Spray
(powder spray)
spray DOW Corning
Molykote G Rapid spray or paste DOW Corning
Aemasol MO 19 P spray or paste A. C. Matthes
Unimoly P 5
powder Klüber Lubrication
Table 9.2
 Push the shrink disk onto the hollow output shaft.
 Only the exterior surface of the hollow output shaft may be greased in the area of the
shrink disk seat.
 Observe the further instructions given in Chapter 6.3.4 "Mounting on the hollow output
shaft with shrink disk (version VDH+/VDHe smooth)".