Installation and Operational Instructions for
ROBA-stop
®
-Z Type 892.101.0
Size 125
(E073 01 046 000 4 EN)
18/05/2022 TK/HW/SU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 10 of 16
www.mayr.com
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Installation
All the screws (except the cap screw Item 21)
and the set screws mounted by the customer
must be tightened using the tightening torque
stated in Table 1.
We recommend that you secure the screws
using Loctite 243.
1.
Remove all 3 hexagon nuts (Item 23 / transportation lock)
and remove the brake plate (15) from the brake body (2).
2.
Mount the hub (1) onto the shaft with inserted key and
secure it axially.
Axial securement takes place using the set screw (1.2),
which presses onto the customer-side key.
3.
Lightly grease the first O-ring (1.1) and insert it into the hub
(1) groove nearest to the machine wall.
4.
Push the rotor 1 (Item 5) over the inserted O-ring (1.1) onto
the hub (1) by hand using light pressure (the rotor collar
should be facing away from the machine wall).
Make sure that the toothing moves easily.
5.
Lightly grease the second O-ring (1.1) and insert it into the
other (not occupied) hub (1) groove.
6.
Push brake body (2) over the hub (1) and insert it in the
gear housing.
7.
Push the rotor 2 (6) over the O-ring (1.1) onto the hub (1)
by hand using light pressure (the rotor collar should be
facing the machine wall).
Make sure that the toothing moves easily.
8.
Insert the cap screws (3) including the washers (4) in the
distance bolts (7) through the brake plate (15).
9.
Secure the brake evenly all around using the cap screws
(3) with a torque wrench.
10. Attach the grounding strand (20) onto the brake body (2)
using the cap screw (21) and the contact washer (22).
To do this, the contact washer (22) must be inserted
between cable lug and brake body (2).
11. Attach the grounding strand (20) onto the brake plate (15)
using the cap screw (21) and the contact washer (22). To
do this, the contact washer (22) must be inserted between
cable lug and brake plate (15).
Steps 12 to 20 do not apply for article number 8292346.
12. Screw the headless screws (18.6) on both sides into the
armature disk (14).
13. Attach both switch brackets B (18.2) in the correct position
onto the brake body (2) using the flat headed screws (18.7).
14. Secure the thrust spring holder (18.8) onto the brake body
(2) using the cap screw (18.9) and the washer (18.10), so
that the pin of the thrust spring holder (18.8) points in the
direction of the knob of switch bracket B (18.2).
15. Tilt switch bracket B (18.2) and join the thrust spring (18.11)
between the thrust spring holder (18.8) and switch bracket
B (18.2).
16. Screw switch bracket A (18.1) onto switch bracket B (18.2)
on both sides using the cap screws (18.3).
17. Screw the hexagon nut (18.5) up to contact on the thread
end onto the hand release rod (18.4).
18. Screw the hand release rod (18.4) into switch bracket A
(18.1) and counter the hexagon nut (18.5) with an open-end
wrench.
19. Screw both headless screws (Item 16 / not shown) as
contact for the hand release into the gear housing.
20. Mount plastic hoses (17) onto both headless screws (16) in
order to dampen vibration noises.
21. Insert the elastomeric element (13) in the claws of the hub
(1).
22. Mount the hub (12) onto the motor shaft with the inserted
key and bring it into the correct axial position (installation
dimension 115 +1 mm, see Fig. 4).
23. Establish the positive locking between the hub (12) and the
elastomeric element (13).
Due to the pre-tension on the flexible elastomeric element
(13), an axial installation force is required when joining both
hubs (1 and 12) (Fig. 5). The force required can be reduced
by lightly greasing the elastomeric element (13).
Use PU-compatible lubricants
(e. g. Vaseline or HP 222)!
After joining both hubs, no axial pressure must
be placed on
the
elastomeric element (13).
Keep to the installation dimension 115 +1 mm,
see Fig. 4.
24.
Check air gap “a” (Fig. 4).
The nominal air gap acc. Table 1 must be given.
25.
Check the air gap single circuits "b" (Fig. 4) on rotors 1
and 2.
The respective minimal air gap acc. Table 1 must be given.
Adjustment
The brakes are equipped manufacturer-side with
the respective springs for the braking torque
stated on the Type tag (24). Adjustment is not
necessary. Adaptions or modifications are not
permitted as a rule. This rule also applies to the manufacturer-
side adjusted noise damping. The switches are also adjusted
manufacturer-side. Despite great care during the manufacturer-
side adjustment, re-adjustment might be necessary after
installation due to transportation and handling. Furthermore,
such switches cannot be considered fail-safe.
Please also observe the section ‘Release Monitoring’.
Noise Damping (Item 19 / Fig. 2)
The noise damping was set and adjusted
manufacturer-side. However, this component is
subject to aging dependent on the application
or operating conditions (torque adjustment,
switching frequency, ambient conditions,
system vibrations etc.).
Replacing the damping element is only
permitted at the
mayr
®
site of manufacture.
