Installation and Operating Instructions for
EAS®-compact® clutch Type 493._ 4 _ .0 Sizes 01 – 1 (B.4.16.GB)
Please read and observe this Operating Instruction carefully.
A possible malfunction or failure of the clutch and any damage may be caused by not observing it.
Table of contents:
Page 1: - Table of contents
- Manufacturer’s declaration
- Safety regulations
Page 2: - Clutch view
- Parts list
Page 3: - Design
- Supply condition
- Function
- Important mounting instructions
- Assembly
- Table 1: Screw tightening torques
- Assembly of the limit switch
Page 4: - Torque adjustment (at the factory)
- Adjusting the torque
Page 5: - Permissible shaft misalignments
- Table 2: Misalignment values
- Alignment of the coupling
- Maintenance
- Disposal
Manufacturer’s declaration
The product is a component within the scope of the Machinery directive 98/37/EC for installation into machines or equipment.
An initial start-up is prohibited until it has been noticed that the machinery or the equipment into which this product has been incorporated
correspond to the EC-guidelines.
Safety regulations
The submitted installation and operating instructions (E+B) is part of the clutch shipment.
Keep the E+B always well accessible near the clutch.
Danger!
If the EAS®-clutches have been modified or reconverted.
If the relevant standards of the safety or installation conditions are not observed.
Necessary protective measures to be undertaken by the user
Cover all moving parts for protection against squeezing, seizing, dust deposit and hit of foreign objects.
The clutches must not be put into operation without limit switch, unless with mayr® not otherwise agreed.
Only qualified and well-trained specialists should work on the units to avoid any personal injury or damage to
machinery under observance of the valid standards and guidelines. The installation and operating instructions
are to be read carefully before installation and operation
With these safety notes no claim on completeness is raised!
Attention:
Based on the guideline 94/9/EC (ATEX-guideline) this product is not suitable for the application in potential explosive areas without
evaluation of the conformity.
10/03/2005 K/TK/Kr Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
87665 Mauerstetten http://www.mayr.de
Page 1 of 5 Germany eMail: info@mayr.de
Installation and Operating Instructions for
14.1
15
14.3
14.2
52349
17876161314.1
14.3
14.2
12
18
EAS®-compact® clutch Type 493._ 4 _ .0 Sizes 01 – 1 (B.4.16.GB)
Fig. 1
Part List (Only mayr
®
-original parts are to be used)
1 Hub
2 Pressure flange
3 Thrust washer
4 Locking ring
5 Deep groove ball bearing
6 Locking ring
7 Steel ball
8 Cup spring
9 Clamping nut
10 Cap screw
11 Cap screw
12 Bushing
13 Connecting flange
14.1 Clamping ring
14.2 Spring
14.3 Cap screw
15 Steel bellows
16 Cap screw
17 Type tag
18 * Limit switch
* Limit switch doesn’t belong to the delivery programme.
11
1
10
10/03/2005 K/TK/Kr Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
87665 Mauerstetten http://www.mayr.de
Page 2 of 5 Germany eMail: info@mayr.de
Installation and Operating Instructions for
Switch
EAS®-compact® clutch Type 493._ 4 _ .0 Sizes 01 – 1 (B.4.16.GB)
Design:
The EAS-compact® clutch combined with a torsionally rigid
smartflex-steel bellows coupling is a torque limiter in combination
with a steel bellows-shaft coupling for connection of two shafts
with alignment ability of shaft misalignments. The steel bellows
coupling compensates axial, radial and angular shaft
misalignments (Table 2, Figs. 6 and 7). The total amount of
misalignments must not exceed 100 %.
Supply condition:
The EAS-compact® clutch is completely assembled, including the
clamping nut (9) for backlash-free shaft fitting and is set to approx.
70 % of the corresponding max. torque, if the customer does not
request any other torque adjustment.
The fits for the hub (1) and bushing (12) are H7 as standard. h6
fits are recommended for the shafts. Please contact the
factory in case of other fits.
The locking screw (11) is not secured with Loctite in case of a
preset clutch. Secure the locking screw (11) with Loctite 243
before an initial start-up of the clutch.
Check supply condition!
Function:
During operation the torque is transmitted from the motor shaft to
the output shaft via the EAS®- clutch and all-steel bellows
coupling. In case of an overload the clutch disengages, the thrust
washer (3) moves axially, a limit switch (18) scans this movement
and provides a signal to switch off the drive.
The residual torque amounts to approx. 5 – 15 % (with approx.
1500 rpm).
The EAS-compact® clutch is consequently only conditionally load
holding. The clutch is automatically ready for operation after
removing the overload.
Re-engagement:
EAS-compact® Ratcheting clutch Type 493._ 40.0 after 15°
EAS-compact® Synchronous clutch Type 493._ 45.0 after 360°
Important mounting instructions
Bores, shafts, hubs and steel bellows must not be oiled or
greased.
Cap screws (10 and 14.3) must be unscrewed.
Avoid damages to the steel bellows (15) before and during
assembly.
Clamping ring (14.1) together with spring (14.2) must be
engaged in the bushing (12).
A smartflex-unit (components 12, 14, 15) may be assembled
or disassembled 5 times maximum (otherwise there are
unacceptable deformations of the groove in the bushing (12)).
Dismantling of the smartflex-unit by simply pressing the
bushing (12) out of the clamping ring (14.1) (manually or at a
small hand-operated press).
Dismantling of the EAS- unit is made after unscrewing the
cap screws (10) and (14.3 EAS- side) by simply drawing off
the shaft.
Assembly
Fix the EAS-compact® clutch axially after pushing the clutch
onto the shaft which is made via tightening the cap screw
(10) in the tightening nut (9) with the prescribed tightening
torque (Table 1).
Push the other shaft into the smartflex-unit (components 12,
14, 15) until the required position is achieved and fix it axially
by tightening the cap screw (14.3) with the prescribed
tightening torque (Table 1).
Table 1
Size 01 0 1
Tightening torque
Cap screw (10) [Nm]
Tightening torque
Cap screw (14.3) [Nm]
16 40 79
17 ±5 % 17 ±5 % 41 ±5 %
Fitting the limit switch (Figs. 2 and 3):
The switch direction located at the housing cover of the
mechanical limit switch points in the direction of the clamping nut
(9) or in stroke direction of the thrust washer (3). Adjust the switch
distances for the mechanical and contactless limit switch acc. to
Figs. 2 or 3. The distance of the thrust washer (3) from the switch
point can be sensitively adjusted with a hexagon head cap screw
SW 7.
direction
Fig. 2
Fig. 3
10/03/2005 K/TK/Kr Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
87665 Mauerstetten http://www.mayr.de
Page 3 of 5 Germany eMail: info@mayr.de
Installation and Operating Instructions for
a
move till
f
o
r
c
e
F
EAS®-compact® clutch Type 493._ 4 _ .0 Sizes 01 – 1 (B.4.16.GB)
Torque adjustment (at the factory):
Torque is adjustable by turning the clamping nut (9). The cup
springs (8) operate in the negative area of their characteristic
(Fig. 5), i. e. tightening of the clamping nut (9) effects a decrease
of the spring pressure, or a releasing of the clamping nut (9) an
increase of the spring force.
An inspection „spring application in the setting range” (Fig. 5) can
be made via the dimension„a“ (distance from hub front face (1)
until clamping nut front face (9) (Fig. 4).
Fig. 4
Adjusting the torque (at the factory)
(Figs. 1 and 4):
Abolish locking piston:
Unscrew cap screw (11) out of the locking ring (4) until it is
flush with the clamping nut (9) at the front face.
Abolish clamping safety device:
Release cap screw (10) out of the clamping nut (9) until it can
be turned.
Adjusting the torque:
Please observe!!
To avoid any unacceptable distortion
(twisting between steel bellows and
EAS®-clutch) and, therefore, a damage of the
steel bellows (15), the EAS®-clutch must be
secured against twisting on the shaft in case of
a torque adjustment.
Turn clamping nut (9) to dimension “a” (the dimension “a”
can be taken from the attached “adjusting diagram”) with the
use of a hook wrench – clockwise or anticlockwise – until the
required torque is set.
Tighten cap screw (10) again.
(Observe tightening torque acc. to Table 1).
Remove cap screw (11) from the clamping nut (9). Put
Loctite 243 glue on it and screw it into the clamping nut (9) or
locking ring (4). The bores in the locking ring (4) must remain
in the same position as the cap screws (11).
If necessary a slight correction must be made.
Please observe
The clutch does not function any more, if the
clamping nut (9) is adjusted or the cup
springs (8) are distorted external of the
service range of the cup spring
characteristic (see Fig. 5).
After dismantling the clutch (e. g. due to change of the cup spring
or cup spring layer) the clutch must be re-adjusted and calibrated
via the dimension “a” (see “adjusting diagram”).
operating range
operating
Graph on
spring characteristic
spring path S
range
Fig. 5
10/03/2005 K/TK/Kr Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
87665 Mauerstetten http://www.mayr.de
Page 4 of 5 Germany eMail: info@mayr.de
Installation and Operating Instructions for
L - ∆0K
L + ∆
∆
K
w
∆
K
r
100
Misalignment [%]
T
o
r
q
u
e
M
[
N
m
]
EAS®-compact® clutch Type 493._ 4 _ .0 Sizes 01 – 1 (B.4.16.GB)
Permissible shaft misalignments
The smartflex-unit compensates axial, radial and angular shaft
misalignments maintaining its backlash-free torque transmission.
The permissible shaft misalignments indicated in Table 2 must not
simultaneously achieve the max. value.
If there are several kinds of simultaneous misalignments they
influence each other, i. e. the permissible values of the
misalignment depend on each other.
The amount of the actual misalignments in percentage of the
maximum value must not exceed 100 % (Fig. 7).
angular misalignment radial misalignment axial displacement
a
K
0
a
Fig. 6
Table 2
Size 01 0 1
Axial displacement ∆∆∆∆Ka [mm]
Radial misalignment ∆∆∆∆KW [mm]
Angular misalignment ∆∆∆∆Kr [ ° ]
20 40 60 80 100 120 140 180160 200
Size 1
Size 01/0
±0,8 ±0,8 ±0,8
0,5 0,5 0,6
2 2 2
6020
Fig. 7
Alignment of the coupling
An exact alignment of the coupling increases the service life of the
coupling considerably and reduces the load for the shaft
misalignments.
For very high speed drives an alignment of the coupling with a dial
gauge is recommended.
Normally, however, an alignment of the coupling with a straightedge in two levels being vertically to each other is sufficient.
Maintenance
The EAS-compact® clutch is nearly maintenance-free.
Special maintenance work may become necessary only where
there is considerable amount of dust and dirt or under extreme
ambient conditions.
In this case please contact the factory.
Disposal
Electronic components
(Limit switch):
The undismantled products can be brought to the material
utilization according to EAK 150106 (mixed materials)
or to the disposal via the domestic refuse (Code No. 200301).
All steel components:
scrap (Code No. 160117)
All aluminium components:
Non-ferous metal (Code No. 160118)
Seals, O-rings, V-Seal, Elastomers:
plastic (Code No. 160119)
10/03/2005 K/TK/Kr Chr. Mayr GmbH + Co. KG Tel.: 08341 / 804-0
Eichenstraße 1 Fax: 08341 / 804-421
87665 Mauerstetten http://www.mayr.de
Page 5 of 5 Germany eMail: info@mayr.de
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