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Keyless Shaft Hub Locking Devices & Shrink
Discs |
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mecaloc shaft hub
locking devices once mounted offer a perfect
interference fit, with the case of a slide
fit during assembly and disassembly to give
a backlash free torque transmission. When
the locking screws are tightened, a radial
pressure is produced through the taper wedge
cross-section of the device to expand into
the hub and to shrink on to the shaft to
cause a frictional locking between the shaft
and the hub.
mecaloc locking
devices offer the most advanced solution
in the field of locking elements of transmission
equipment as it combines the precision of
the transmission of synchronous motion with
the high power that can be transmitted by
a friction coupling.
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mecaloc prevents the axial
movement of the drive components and will find
ideal application to lock timer pulleys, gears,
cams, pinions, flywheels, gear boxes, couplings,
clutches, brake discs and a whole lot of components
in the kinematic chain that have been designed
for the transmission of mechanical power.
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mecaloc Typical
Advantages |
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- Ease of assembly and disassembly.
- Backlash free frictional torque transmission.
- No angular, axial or radial play.
- High resistance to continuous alternating
torsional forces.
- Optimisation of design.
- Reduced costs.
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Installation &
Removal of mecaloc |
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Installation: |
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mecaloc devices come in
a ready to install condition. Since torque is
transmitted through frictional contact, it is
very important that all contact surfaces are clean
and installation instructions are observed.
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- Loosen the screws of mecaloc by 2-3
turns and apply a drop of oil on the screw threads,
and the screw head
bearing surface.
- Insert mecaloc into the housing of the hub
and slide the shaft into the mecaloc
- Tighten screws uniformly, step by step in
a diametrically opposite sequence to the indicated
tightening torque TA.
- Screws adjacent to the slit in the internal
ring should be tightened last.
- Recheck tightening torque on all screws to
ensure that the tightening torque TA. is achieved.
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Note: |
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Do not
use oils containing molybdenum disulphide.
The efficiency of mecaloc is no reduced if
keyway exist on the shaft or hub. Such keyways may
be ignored. |
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Removal
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- Unscrew all screws by a few threads.
- Remove the screws adjacent to the extraction
hole and insert them into the extraction holes
until contact.
- Tighten screws into the extraction holes uniformly,
step by step in a diametrically opposite sequence
until
connection is released.
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mecaloc 5051 and
5052 have same overall dimensions except
that the series 5052 is designed with a
larger flange to form a shoulder for the
hub. This eliminates any axial movement
of the hub during assembly with respect
to the shaft and also improves the perpendicularity
of the hub.
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mecaloc 5051 and
5052 have same overall dimensions except
that the series 5052 is designed with a
larger flange to form a shoulder for the
hub. This eliminates any axial movement
of the hub during assembly with respect
to the shaft and also improves the perpendicularity
of the hub.
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