Installation and Operational Instructions
for ROBATIC
®
-clutch Type 500.30_.0
Sizes 3 – 7 (double-flow)
(B.5.5.GB)
27/11/2008 TK/EI/SU
Chr. Mayr GmbH + Co. KG
Tel.: 08341 / 804-241
Eichenstraße 1
Fax: 08341 / 804-422
87665 Mauerstetten
http://www.mayr.de
Page 5 of 8
Germany
eMail:
State of Delivery
Please check the state of delivery immediately according to the
Parts List!
mayr
®
will take no responsibility for belated complaints.
Please report transport damage immediately to the deliverer.
Please report incomplete delivery and obvious defects to the
manufacturer.
Function
ROBATIC
®
-clutch devices are energised to engage,
electromagnetic pole face clutches.
By applying DC voltage to the magnetic coil in the coil carrier (1),
a magnetic field is built up. This pulls the armature disk (2)
against the rotor (3).
The torque is transmitted via frictional locking.
Please Observe!
In new condition, torque transmission first
takes place via the metal outer pole on the
rotor (3) and, after a short operation period,
then additionally via the inner pole. After the
entire run-in procedure, even friction occurs
on the metal poles.
Design
ROBATIC
®
-clutches have Electrical Protection IP 54 and
Insulation Class F (up to 155 °C) for coil, casting compound and
connection strands. At 100 % duty cycle, the coil has a
temperature of c. 65 °C.
The surfaces on the coil carrier (1), rotor (3) and the flange hub
(6) are phosphated, the armature disk (2) is gas nitro-carburized
(friction surfaces are ground), and the transmission spring is
made of stainless steel.
The clutch rotor (3) is pilot bored or finish bored with a keyway
acc. DIN 6885. When the rotor bore and keyway are produced
customer-side, the Guidelines on page 6 of the Installation and
Operational Instructions, “Boring the Rotor Hub” must be
followed!
Explanation of Terms
The nominal torque M
2
is the largest transmittable torque (after
run-in has been completed), with which the closed clutch can be
loaded without slipping occurring.
The relative duty cycle is the ratio of duty cycle to backlash
duration in percent (% duty cycle).
Table 2
Size
Friction work Q
a
[J]
Clutch speed n
min
[rpm]
3
16
300
4
29
250
5
55
200
6
105
160
7
200
130
Torque Characteristics
In new condition, c. 50 % of the catalogue nominal torque
(M
2
) is transmitted.
In order to reach the nominal torque, the clutch must be run in.
Run-in Conditions
Apply a voltage 1/3 of U
Nom
.
3 minutes of continuous slipping against a blocked drive.
Speed for
Size 3:
60 rpm
Size 4:
50 rpm
Size 5:
40 rpm
Size 6:
30 rpm
Size 7:
25 rpm
Please Observe!
Only carry out the torque inspection in static
operation with nominal energisation – no
slipping (danger of scoring)
When there is constant synchronisation below the parameters in
Table 2, the torque can drop c. 50 to 60 % of the nominal torque.
