Installation and Operational Instructions for
EAS
®
-smartic
®
s
ynchronous clutch Type 48_._ _5._
Sizes 01
– 2
(B.4.17.1.GB)
25/11/2011 TK/NU/SU
Chr. Mayr GmbH + Co. KG
Tel.: +49 8341 804-0
Eichenstraße 1
Fax: +49 8341 804-421
D-87665 Mauerstetten
http://www.mayr.com
Page 13 of 18
Germany
E-Mail:
Changing the Torque Adjustment Range by
Changing the Cup Spring Layering
If a customer realises that the selected clutch adjustment range
is too high or too low, the cup spring layering (10) on the
respective clutch must be changed (every clutch delivered
contains a maximum of 8 cup springs).
The adjustment scale on the clamping ring (1.2) or the adjusting
nut (20) is no longer applicable after alteration!
Principally, we recommend that modification and re-calibration of
the clutch be carried out at the company
mayr
®
headquarters,
where we can provide a higher torque adjustment accuracy than
any customer-side alterations.
Changing the cup spring layering (10) between Type
48_.2_5._ and Type 48_.7_5._ is generally possible.
If the required torque lies over the torque range of Type
48_.7_5._, modification to Type 48_.8_5._ is necessary (for
modification, a special pressure flange as well as a special
thrust washer are necessary) or the next larger construction
size must be selected. Types 48_.8_5._ have a max. speed of
250 rpm.
If the required torque lies below the torque range of Type
48_.2_5._, the next smaller construction size must be selected.
Before changing the cup spring layering (10), the clutch must be
removed from the system and placed on a suitable auxiliary
shaft, for example in a vice; it must be re-installed with the
adjusting nut side facing upwards.
When doing this, the clamping ring (1.2) on the clamping ring
design must be re-clamped.
Changing the cup spring layering and torque adjustment on
clamping ring design Type 48_._35._ and Type 48_._45._:
1. Turn back the locking screw (6) and remove it from the
clamping ring (1.2).
Please Observe!
The locking screw (6) is glued into the
clamping ring (1.2).
2. Turn the adjusting nut (5) back anti-clockwise until the cup
spring package (10) is completely relaxed.
3. Loosen the clamping screw (2) of the clamping ring (1.2)
and remove the clamping ring (1.2) from the hub (1).
4. Screw the adjusting nut (5) completely off the hub (1).
5. Change the cup spring layering (10) acc. Table 3.
6. Screw the adjusting nut (5) clockwise onto the hub (1) up to
contact on the cup springs (10).
7. Push the clamping ring (1.2) into the correct position (for
position of the spring pin (1.3) in the clamping ring (1.2),
please see Fig. 15) up to contact on the hub shoulder (1),
and tighten the clamping screw (2) to the specified torque
(acc. Table 1).
8. Turn the adjusting nut (5) clockwise by the number of
graduation lines acc. Table 3. This achieves a torque of
approx. 80 % of the maximum value on the respective cup
spring layering (10). By turning the adjusting nut (5)
clockwise, the clutch torque can be reduced even further. By
turning the adjusting nut anti-clockwise, the clutch torque
can be increased.
The permitted operating range acc. Fig. 14 must be
observed.
9. One of the marking notches on the adjusting nut (5) must be
aligned with a notch on the clamping ring (1.2). The locking
screw (6) must be painted with Loctite 243 and screwed up
to its limit into the clamping ring (1.2).
10. Remove the clutch from the auxiliary shaft and re-install it
into the system.
Fig. 15
Changing the cup spring layering and torque adjustment on
key design Type 48_._25._:
1. Turn back the locking screw (22) and remove it from the
adjusting nut (20).
Please Observe! The locking screw (22) is glued into the
adjusting nut (20).
2. Turn the adjusting nut (20) back anti-clockwise completely
and remove it from the clutch.
3. Remove the locking ring (21) from the hub (19).
4. Change the cup spring layering (10) acc. Table 3.
5. Place the locking ring (21) again up to the cup springs (10)
onto the hub (19).
6. Screw the adjusting nut (20) up to contact on the locking
ring (21) or up to contact of the locking ring (21) on the cup
springs (10) onto the hub (19).
7. Turn the adjusting nut (20) clockwise by the number of
graduation lines acc. Table 3. This achieves a torque of
approx. 80 % of the maximum value on the respective cup
spring layering (10). By turning the adjusting nut (20)
clockwise, the clutch torque can be reduced even further.
By turning the adjusting nut anti-clockwise, the clutch torque
can be increased.
The permitted operating range acc. Fig. 14 must be
observed.
8. One of the marking notches on the adjusting nut (20) must
be aligned with a notch on the locking ring (21). The locking
screw (22) must be painted with Loctite 243 and screwed up
to its limit into the adjusting nut (20).
9. Remove the clutch from the auxiliary shaft and re-install it
into the system.
1/1.1
1.2
1.3
