Installation and Operational Instructions for
EAS
®
-HT clutch Type 405_._ _400
Sizes 7
– 10
(B.4050.1.EN)
16/04/2019 TK/GH/SU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Tel.: +49 8341 804-0, Fax: +49 8341 804-421
Page 4 of 9
Design
The EAS
®
-HT clutch
Type 4050._ _400
is designed as a
mechanically disengaging overload clutch according to the ball-
detent principle.
On
Type 4053._ _400
, this clutch is combined with a plug-in
elastomer compensating coupling (flexible coupling Nor-Mex
®
G)
for connecting two shafts with shaft misalignment compensation
capability.
The flexible coupling part compensates for axial, radial and
angular shaft misalignments, whereby the total sum of
misalignments must not exceed 100%.
The combination of the EAS
®
-HT clutch with
other shaft couplings is possible.
In this case, please also observe the
Operational Instructions included in the delivery
of the shaft coupling.
Function
The EAS
®
-clutch protects the drive line from excessively high,
unpermitted torque impacts which can occur due to unintentional
blockages.
After overload has taken place, the transmitting mechanism is
completely disconnected. Only the bearing friction continues to
have an effect.
This means that no re-engagement impacts or metallic sliding
movements occur on the clutch torque transmission geometries
when using this clutch variant.
When in operation, the set torque is transmitted from the motor
shaft (input) via the hub (1) and the pressure flange (3) or the
flange hub (Item 19 / flexible coupling) onto the output.
If the set limit torque is exceeded (overload), the clutch
disengages.
On disengagement, the bolts (7) in the overload elements (2)
perform an axial movement (stroke); a contactless limit switch
provided customer-side can be used here for recognition of
overload.
The bolts (7) remain disengaged. Input and output are separated
residual torque-free.
After-acting masses can run free.
CAUTION
After overload occurrence, the clutch has no
load-holding function.
The run-out time after disengagement must be
max. 10 minutes.
In order to prepare the clutch for renewed operation, the
bolts (7) must be re-engaged manually (see section Re-
engagement).
Scope of Delivery / State of Delivery
The EAS
®
-clutch is manufacturer-assembled ready for
installation.
The torque is set manufacturer-side according to the
customer's request (please compare the torque stipulated in
the order with the torque imprinted/engraved in the
identification).
Otherwise, the clutch must be adjusted to the required
torque by using the Adjustment Diagram (attachment) (see
section Torque Adjustment).
Please check the scope of delivery as well as the state of
delivery immediately after receiving the goods.
mayr
®
will take no responsibility for belated complaints.
Please report transport damage immediately to the deliverer.
Please report incomplete delivery and obvious defects
immediately to the manufacturer.
General Installation Guidelines
The bore tolerances in the hub (1) and in the flange hub (19) are
produced to tolerance quality H7. The surface roughness depth
in the bores is produced to Ra 1.6 µm.
Please secure screws with Loctite 243 (medium hard).
Please observe the screw tightening torques
acc. Table 3!
CAUTION
Before initial operation of the clutch, please
remove the eyebolt (25) (installation aid).
Clutch Installation (Figs. 1 to 3)
Type 4050._ _400
Mount the EAS
®
-HT clutch using a suitable mounting device onto
the drive shaft with inserted key and secure it axially (e.g. using
a washer and a screw, screwed into the shaft threaded centre
hole).
Type 4053._ _400
1. Mount the EAS
®
-HT clutch using a suitable mounting device
onto the drive shaft with inserted key and secure it axially
(e.g. using a washer and a screw, screwed into the shaft
threaded centre hole).
2. Mount the flange hub (19) incl. the claw ring (18) onto the
shaft using a suitable mounting device, and secure it axially
using a set screw (22).
3. Push the input and output shafts together axially and
establish the positive locking of the elastomer compensating
coupling.
While doing this, please observe the distance dimension “s”
and the permitted misalignment values (see Fig. 2 and Table
2, page 7).
4. When in position, screw the input and output units together.
