Installation and Operational Instructions for
EAS
®
-Compact
®
overload clutch,
Type 49_._ _4._ Sizes 4 and 5
(B.4.14.6.GB)
25/01/2013 GC/NH/GH/SU
Chr. Mayr GmbH + Co. KG
Tel.: +49 8341 804-0
Eichenstraße 1
Fax: +49 8341 804-421
D-87665 Mauerstetten
www.mayr.com
Page
13
of
21
Germany
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Permitted Shaft Misalignments on
Types 494._ _4._ and 496._ _4._
EAS
®
-Compact
®
clutches Types 494._ _ 4._ and
496._ _ 4._ compensate for radial, axial and angular shaft
misalignments (Figs. 15 - 17).
However, the permitted shaft misalignments indicated in Tables
4, 7 and 9 must not simultaneously reach their maximum value.
If more than one kind of misalignment takes place
simultaneously, they influence each other. This means that the
permitted misalignment values are dependent on one another,
see Fig. 13. The sum total of the actual misalignments in percent
of the maximum value must not exceed 100 % (see Example
below).
The misalignment values stated in Tables 4, 7 and 9 refer to
clutch operation at nominal torque, an ambient temperature of
+30 °C and a operating speed of 1500 rpm. If the clutch is
operating in other or more extreme operating conditions, please
contact the manufacturers.
Example: Type 496. _ _ 4. 2, Size 4:
Axial displacement occurrence K
a
= 0,6 mm equals 40 % of the
permitted maximum value m K
a max
= 1,5 mm.
Angular misalignment in the disk pack K
w
= 0,21°
equals 30 % of the permitted maximum value K
w max
= 0,7°.
=> Permitted radial misalignment K
r
= 30 % of the maximum
value
K
r max
= 0,3 mm => K
r
= 0,09 mm
Coupling Alignment on
Types 494._ _4._ and 496._ _4._
Exact alignment of the coupling reduces the load on the shaft
bearings and increases the coupling lifetime substantially.
We recommend alignment of the coupling using a dial gauge or
special laser on drives operating at very high speeds.
However, in most of the applications, coupling alignment using a
straight edge in two levels vertical to each other is sufficient.
Fig. 14
Type 494._ _4._ (Size 4)
Axial
Radial
Angular
displacement
misalignment
misalignment
Fig. 15
Type 494._ _4.2 (Size 5)
Difference dimension
ΔK
w
=
ΔK
w1
-
ΔK
w2
Please measure
ΔK
w1
and
ΔK
w2
vertically and horizontally
offset by 180 °
Axial
Radial
Angular
displacement
misalignment
misalignment
Fig. 16
Type 496._ _4.2 (Size 5)
Axial
Radial
Angular
displacement
misalignment
misalignment
Fig. 17
20
30
%
25
%
75
%
0%
50
%
20
40%
40
30%
60
60
80
80
100
100
Δ K
w
[%]
Angular misalignment
Δ K [%] Axial displacement
a
Δ
K
[
%
]
R
a
d
ia
l
m
is
a
lig
n
m
e
n
t
r
ΔK
a
Δ
K
r
Δ
K
w
ΔK
w1
ΔK
w2
ΔK
w
ΔK
a
Δ
K
r
ΔK
a
Δ
K
w
2
x Δ
K
w
Δ
K
r