Installation and Operational Instructions for
ROBA
®
-ES Couplings Type 94_._ _ _._ Sizes 14
– 65
(B.9.6.EN)
11/03/2022 TK/GH/GC/MD
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 4 of 29
Parts List
Only use
mayr
®
original parts
Item
Name
0
Clamping hub Type 94_._00._
0.1
Clamping screw Type 94_._00._
1
Shrink disk hub assembly Type 94_._11._
1.1
Shrink disk
1.2
Tensioning screw Type 94_._11._
2
Hub with keyway Type 94_._22._
2.1
Set screw (adjusting screw)
3
Split clamping hub Type 94_._33._
3.1
Clamping screw Type 94_._33._
4
Expansion hub assembly Type 94_._44._
4.1
Tensioning cone
4.2
Tensioning screw Type 94_._44._
5
Clamping hub Compact Type 94_._55._
5.1
Clamping screw Type 94_._55._
6
Elastomeric element
80 Sh A (blue)
Elastomeric element
92 Sh A (yellow)
Elastomeric element
98 Sh A (red)
Elastomeric element
64 Sh D (green)
Elastomeric element
72 Sh D (grey)
7
Connection piece
8
Sleeve
Function - Application
ROBA
®
-ES
stands for:
flexible (E), backlash-free (S) shaft coupling.
The coupling consists of (see Fig. 1)
two coupling hubs and an elastomeric element (flexible, star-
shaped intermediate ring) as a single-jointed coupling
(Type 940._ _ _._)
two coupling hubs, two elastomeric elements and a
connection piece as a double-jointed coupling short
(Type 942._ _ _._)
two coupling hubs, two elastomeric elements and a sleeve
with variable length as a double-jointed coupling
(Type 943._ _ _._)
ROBA
®
-ES
couplings are conceived specially for backlash-free
operation at comparatively high speeds.
ROBA
®
-ES
couplings are mainly used in measurement and
regulatory technology as well as in control and procedure
technology.
ROBA
®
-ES
couplings are shaft-shaft connections for flexible,
backlash-free torque transmission in highly dynamic servo
drives.
State of Delivery
ROBA
®
-ES couplings are delivered manufacturer-assembled
ready for installation (Please check state of delivery).
Depending on size or Type, ROBA
®
-ES coupling hubs are made
of aluminum or steel.
ROBA
®
-ES couplings with steel hubs and steel shrink disks have
been zinc phosphated manufacturer-side to form a basic
corrosion protection. All other components are untreated.
The hubs acc. DIN 69002 are blank and oiled.
The flexible, star-shaped intermediate ring (elastomeric element)
is pressed into specially designed claws (Fig. 3) under light pre-
tension.
Fig. 2
Fig. 3
Storage
The coupling hubs are delivered preserved and can be stored in
dry rooms protected from the weather for 6 to 9 months .
If stored under the conditions described below, the maximum
usability of the elastomeric elements is 5 years.
Damp storage rooms are not suitable.
In order to exclude condensation, the relative
air humidity should ideally total maximum 65 %.
There must be no ozone-generating
equipment, for example fluorescent light
sources, mercury vapor lamps or electrical high
voltage devices in the storage rooms.
Coupling hub
Flexible intermediate ring