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Type
ASK - Combined Roller Bearing
and Roller Ramp Clutch |
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Please
click image to order a catalogue.
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| The
ASK series are roller ramp freewheels
supported by two rows of roller
bearings, the complete unit
being within a dust proof enclosure
conforming to 60 series bearing
dimensions. They are supplied
ready grease lubricated. Torque
transmission is by press fit
with outer housing to K6 tolerance
and shaft to h6 or j6. These
units must not be subject to
axial loading. |
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| Type
GFK - Ball and Roller Bearing
Sprag Clutches |
The GFK clutch combines a sprag
unit with a roller bearing and
ball bearing into a unit which
dimensionally equates to a 59
series bearing. The design provides
high torque capacity and bearing
strength within a compact unit.
Torque transmission is by press
fit with outer housing bore
to R6 tolerance and shaft to
p5 tolerance.
The unit has operating temperature
range of 40°C to + 130°C, and
is supplied ready grease lubricated.
For dusty environment external
sealing is required. |
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Single
Revolution Clutches
These
clutches have rollers contained
in a cage which is connected
to the operating cam. The cam
is sprung loaded to push the
rollers up the ramp to provide
drive, but if the cam is stopped
by a trip pawl it fires the
rollers out of engagement, thereby
disengaging the drive. Clutches
can provide a single revolution,
multiple revolutions or a fraction
of a revolution from a constantly
rotating input. Extremely accurate
positional control is provided
with no accumulative error.
Two types of clutch are offered
- the BAT series for maximum
torque capacity, and CTK series
for higher speed applications
and replacement on existing
machinery. |
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Backstop
Clutches - Types CR/BW and CR/BV
Most types of freewheels can
be used for backstop applications,
but these clutches have been
specially designed for this
application. Mainly intended
for fitting on Conveyor or Elevator
headshafts their design makes
easy installation on new or
existing units.
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CR/BW
and BV
Series incorporate a torque
arm with slot to engage with
a bolt fixed to machine frame.
Units are greased for life with
labyrinth seals ideal for dust
laden environments. Units can
be mounted on horizontal or
vertical shafts, and are available
with bore range 20mm to 120mm
with torque capacity to 18,450
Nm.
CR/BW
Series uses sprags to provide
a high torque capacity, at low
unit cost. Bearing support is
plain metal bushes with seals
selected to retain grease and
exclude dust and moisture.
CR/BV
Series employs roller ramp principle
for extended wear life and faster
operating speeds. Sealing is
by shield protected labyrinth
seals. Can be used for slow
speed indexing.
When mounting these units it
essential to ensure no axial
loading occurs, and there is
a minimum 0.2mm clearance around
locking pin. |
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