Installation and Operational Instructions for
EAS
®
-XT clutch Type 475._24._ Sizes 3 – 6
(B.4.75.2.GB)
10/11/2010 TK/VG/SU
Chr. Mayr GmbH + Co. KG
Tel.: 08341 / 804-0
Eichenstraße 1
Fax: 08341 / 804-421
D-87665 Mauerstetten
http://www.mayr.de
Page 7 of 8
Germany
E-Mail:
Supplementary Sheet for Type 475._24.8
Fig. 13
Additional Parts:
34
Sleeve
35
Hexagon head screw
Type 475. _ 24.8 (Fig. 13)
This Type was conceived so that, when using standardized
motor gear shafts, both the EAS
®
-part as well as the flexible
coupling part (Fig. 2) can be replaced without having to change
the position of the input shaft and the output shaft.
The prerequisites from Tables 4 and Fig. 14 must be
fulfilled.
Clutch Installation (Fig. 14)
Step 1: Mount the EAS-part (Items 1 - 23) onto the input shaft;
then remove the eyebolt (18).
Step 2: Axially secure the EAS
®
-part (Items 1 - 23) using e.g. a
press cover and a screw (not included in delivery) onto the input
shaft.
Step 3:Mount the coupling part Items 27 - 29 onto the output
shaft with the claw element (27) pushed back.
Step 4: Insert components Items 24, 25, 34 (assembled) and 35
with screwed back screws (35) radially between both pre-
assembled coupling parts and screw them together with the
EAS
®
-part (Items 1 - 23).
Observe the tightening torque acc. Table 4!
Step 5: Install the flexible intermediate ring (26) into the cam ring
(25). The exact angular position between the claw ring (27) and
the flange hub (29) is marked for maintenance of the balance
quality on both parts with one marking notch each. Screw the
claw ring (27) together with the flange hub (29) in this exact
angular position. Observe the tightening torque acc. Table 4!
Then screw the flange hub (29) together with the set screw (30).
Clutch De-installation
To replace an entire clutch element, please follow these
instructions:
Loosen and remove the cap screws (28).
Push the claw ring (27) back over the flange hub (29).
Loosen and remove the hexagon head screws (35).
Cut open the intermediate ring (26) in the area of the thin
intermediate ligament and remove it radially.
Push the sleeve (34) assembly inc. cam ring (25) axially out
of the centring on the output flange and remove it radially.
This provides enough free axial space in order to replace both
clutch halves, if necessary.
Installation of the clutch elements takes place by following the
de-installation instructions backwards.
When installing the clutch, please keep to the
tightening torque for the respective fixing
screws (28) and (35) (Table 4).
Table 4
EAS
®
-XT
Size
3
4
5
6
Cap screw (28) tightening torque
[Nm]
49
125
200
310
Hexagon head screw (35) tightening torque:
[Nm]
49
125
200
310
Dimension L (Fig. 14)
[mm]
405,2
500,0
560,5
689,5
Dimension I (Fig. 14)
[mm]
131,7
180,0
182,0
230,0
Dimension X (Fig. 14)
[mm]
308,2
393,0
423,5
533,5
29
28
27
26
24
25
34
35
30
18
Item 1 - 23
