Installation and Operational Instructions for EAS
®
-compact
®
Ratchetting clutch, Type 49_._ _0._
Sizes 01 to 3
Synchronous clutch, Type 49_._ _5._
Sizes 01 to 3
(B.4.14.EN)
17/03/2021 TK/NU/GC/GF/SU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 15 of 22
Torque Adjustment
In order to guarantee low-wear clutch operation, it is essential
that the clutch torque is set to a sufficiently high service factor
(overload torque to operating torque).
Our experience has shown that an
adjustment factor of 1.5 to
3
gives good results.
On very high load alternations, high accelerations and irregular
operation, please set the adjustment factor higher.
Torque adjustment is carried out by turning the adjusting nut (5).
The installed cup springs (9) are operated in the negative range
of the characteristic curve (see Fig. 9); this means that a
stronger pre-tensioning of the cup spring results in a decrease of
the spring force.
The torque is set manufacturer-side according to the customer's
request.
If no particular torque adjustment is requested customer-side,
the clutch will always be
pre-set
and
marked
(calibrated)
manufacturer-side to approx. 70 % of the maximum torque.
Adjusting the adjusting nut (5) or distorting the
cup spring (9) outside of the cup spring
characteristic curve (see Fig. 9) stops the clutch
functioning.
The inspection dimension "a" (see Table 3) can
show deviations due to construction tolerances or to clutch
wear. After de-installing the clutch (e.g. due to cup spring
replacement or changes to the cup spring layering),
the clutch must be re-adjusted and calibrated using dimension
"a" (see Table 3 and Figs. 11/12).
Fig. 9
Move to operating
range
Graph of spring
characteristic
curve
Operating
range
Spring path S
F
orc
e F
