Installation and Operational Instructions for EAS
®
-compact
®
Ratchetting clutch, Type 49_._ _0._
Size 4
Synchronous clutch, Type 49_._ _5._
Size 4
(B.4.14.4.EN)
17/03/2021 TK/GC/NU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 10 of 22
Cup Spring Layering (Fig. 5)
Correct cup spring layering is a prerequisite for problem-free
clutch function and torque adjustment.
Torque range
“medium”:
one
cup spring (Type 49_.
5
_ _._)
Torque range “high”:
two
cup springs (Type 49_.
6
_ _._)
Torque range
“very high”:
four
cup springs (Type 49_.
7
_ _._)
Torque range
“maximum”:
five
cup springs (Type 49_.
8
_ _._)
1x layered
2x layered
Type 49_.5_ _._
Type 49_.6_ _._
4x layered
5x layered
Type 49_.7_ _._
Type 49_.8_5._
Fig. 5
Mounting onto the Shaft
EAS
®
-compact
®
clutches Size 4 include
cone bushings, shrink disks, clamping hubs or keyways as part of
the standard delivery.
During installation of cone bushings or shrink disks, please
observe the following:
Recommended shaft tolerance
for cone bushings: h6
for clamping hubs: see Table 8
for shrink disk hubs: see Tables 9 and 12
Shaft surface: finely turned or ground
(Ra = 0.8 µm).
Shaft material: yield point at least 400 N/mm
2
,
e.g. C45 +QT, 42QT.
Degrease or remove conserving layers on the shafts and
bores before installing the clutch.
Greasy or oily bores or shafts do not transmit the torques
defined in the catalogue.
Mount the clutch or clutch hubs onto both shaft ends using a
suitable device and bring it / them into the correct position.
Tighten the tensioning screws (12) of the cone bushing (11) in
2 steps cross-wise and then in 3 to max. 6 tightening
sequences evenly using a torque wrench to the torque stated
in Table 5.
Type 494.-:
Tighten the tensioning screws (34) in the shrink disks (38)
stepwise (in 3 to max. 6 tightening sequences) and cross-
wise evenly using a torque wrench to the torque stated in
Table 5.
Type 496.-:
Tighten the tensioning screws (21) in the shrink disks (20)
using a torque wrench evenly and one after the other in max.
6 sequences to the torque stated in Table 5.
The transmittable torques of the shaft-hub connection are
dependent on the bore diameter and the quality of the drive
shafts used. Please observe the respective transmission
Tables 8, 9 and 12.
The clutch or clutch hub carries out an axial
movement in the direction of the cone bushing
(11) when tightening the cone bushing (11).
Because of this effect, please ensure that on
the EAS
®
-compact
®
clutch with disk pack (Type
496._ _ _._), first the cone bushing (11) is
completely tightened, then the other (disk pack)
side.
De-installation
of the Cone Bushings and Shrink Disks
In the cone bushings and the shrink disks, there are tapped
extracting holes next to the tensioning screws.
1)
Loosen all tensioning screws by several thread turns.
2)
Screw out the tensioning screws located next to the tapped
extracting holes and screw them into the tapped extracting
holes up to their limits.
Then tighten these screws until the tensioning connection
loosens.