Page 1
POWER JACKS LTD DOCUMENT Spiracon
1
Tel: +44 (0) 1358 285100 ISSUE No 1.4
email: [email protected] PAGE
http://www.powerjacks.com
_________________________________________________________________________________
SPIRACON
TM
of 4
INSTALLATION AND MAINTENANCE
POWER JACKS LTD
BALMACASSIE COMMERCIAL PARK
ELLON
ABERDEENSHIRE
AB41 8BX
SCOTLAND (UK)
TEL +44 (0)1358 285100
email: [email protected] www.powerjacks.com
Page 2
POWER JACKS LTD DOCUMENT Spiracon
2
Tel: +44 (0) 1358 285100 ISSUE No 1.4
email: [email protected] PAGE
http://www.powerjacks.com
_________________________________________________________________________________
1.0 SCOPE.
This specification covers the unpacking, handling, operation and maintenance for
SPIRACONTM Roller Screws manufactured by Power Jacks.
2.0 SAFETY
The Power Jacks Spiracon roller screw and nut serves for the positioning, transporting,
feeding, thrusting, lifting, unloading, clamping, gripping and compressing of loads,
tooling and work pieces. Since it can be used in so many different ways, it is the user
who must be responsible for the safety of the application concerned.
The user must ensure that the mounting of the Spiracon roller screw will not incur a
hazard or injury to persons and/or damage to materials. If it is required to install a
Spiracon roller screw in a region that is accessible to persons, then it must be installed
and guarded so that no person can be endangered while it is in operation.
The Spiracon roller screw must be operated within the defined stroke and must not be
driven into end stops. Limit switches should be fitted to the application to prevent this
from happening.
3.0 UNPACKING.
Remove the banding from around the container. Remove and discard in a safe place
any desiccant and plastic bags within the container. Lift the screws with soft slings
around the Spiracon roller screw using a spreader bar to reduce the screw deflection
while lifting.
WARNING - The Spiracon nut has a high efficiency and will travel along the
screw under its own weight if the Spiracon roller screw - nut combination is tilted
off the horizontal.
If the Spiracon roller screw is to be lifted into the vertical position then remove the
Spiracon roller nut or attach a collar to the screw to prevent the Spiracon roller nut
travelling down the screw under its own weight.
4.0 INSTALLATION.
The Spiracon nut can be removed from the screw for installation or maintenance
purposes.
It is recommended that the Spiracon roller screw be protected from contamination and
debris when installed by fitting covers or expanding bellows.
When installing the Spiracon roller screw into the position use soft slings as required
wrapped around the screw, ref above.
WARNING – Do not use wire ropes or chains to handle Spiracon roller screw.
of 4
Page 3
POWER JACKS LTD DOCUMENT Spiracon
3
Spiracon Roller Nut & Screw
Rocol MTS 1000
Castrol Spheerol BM2
Shell Calithia HDX
Mobil Grease HP222
Tel: +44 (0) 1358 285100 ISSUE No 1.4
email: [email protected] PAGE
http://www.powerjacks.com
_________________________________________________________________________________
When installing the Spiracon roller screw ensure that the alignment of the screw in its
support bearings is within 0.1/1000.
Once the Spiracon roller screw is installed clean the screw thoroughly and lightly coat
with grease applied with a paintbrush. Note that the screw will be supplied either lightly
coated with grease or if supplied un-greased, coated with Shell ENSIS Fluid. The Shell
ENSIS Fluid can be removed with Shell Cleanforce or other hydrocarbon solvent.
If travel limit switches are fitted to the installation, set the travel switches to operate at
the required travel to ensure that the Spiracon roller nut cannot be driven into a solid
stop.
It is recommended that initial setting of proximity switches is carried out by manually
rotating the Spiracon roller screw to position the switch activators correctly.
WARNING - Do not operate the installed Spiracon roller screw until all travel limit
switches are commissioned.
Check that the grease nipple in the Spiracon roller nut is visible when the screw - nut is
installed.
5.0 MAINTENANCE
The Spiracon roller screw should not require maintenance during its normal life other
than;
5.1 The periodic injection of grease into the Spiracon roller nut through the grease access
hole provided, recommended six (6) monthly intervals minimum.
of 4
5.3 Periodic cleaning of the Spiracon roller screw and the re-application of a light coating of
grease applied with a paintbrush.
5.3 Should a repair to a Spiracon roller nut be required then remove the faulty Spiracon
roller nut, and return the unit to Power Jacks for repair.
6.0 WIPERS
There are two different types of wipers fitted to Spiracon nuts, a brush type and a
plastic type. The wiper, fitted to each end of the nut, retains the majority of the grease,
allowing a film of grease to remain on the screw thread, and prevents the ingression of
debris into the nut that may cause damage.
Page 4
POWER JACKS LTD DOCUMENT Spiracon
4
Tel: +44 (0) 1358 285100 ISSUE No 1.4
email: [email protected] PAGE
http://www.powerjacks.com
_________________________________________________________________________________
6.1 Brush Type Wiper
The brush type wiper is retained in a recess at each end of the nut and is removed by
releasing the retaining circlip, with standard circlip pliers, and removing / replacing the
brush wiper. There is no specific orientation of the brush wiper.
6.2 Plastic Type Wiper
The plastic type wiper is retained in a recess at each end of the nut by a dowel pin.
The plastic type wiper has a thread form to match the screw and they are not
interchangeable between positions or between nuts. Before removal of the nut from
the Spiracon screw identify the wiper position relative to the nut. When assembling the
nut onto the screw ensure that the wipers are flush with the face of the nut, i.e. that
there is a gap between the bottom of the recess and the inside face of the wiper, or as
defined on the Power Jacks drawing. This ensures that the wiper is free on the
Spiracon screw thread and not cross-threaded relative to the nut.
WARNING - Incorrect mounting of the wipers will result in incorrect operation of
the nut.
6.2.1 Replacing Plastic Wiper
If required pack the space between the rollers of the nut with grease before assemble
to the screw.
To fit replacement wipers to an existing nut first remove the wiper location dowel pin
from the wiper recess in the nut.
Wind the Spiracon nut onto the screw.
Wind the wiper along the screw and into the recess in the nut against the recess face.
Unwind the wiper creating a gap of 1 to 2mm between wiper and bottom of recess and
mark position of location dowel on wiper.
Drill hole suitable for location dowel in the wiper.
Position wiper on screw in nut recess, ensuring the 1 to 2mm gap is present and fit the
location dowel through the wiper into the nut.
7.0 TOOLING.
Only standard tools are required for installation and normal maintenance.
8.0 SPARES LISTING.
Spares are available from Power Jacks by quoting the part number required, ref Power
Jacks general arrangement drawing supplied, and quoting the serial number
identification on the Power Jacks label on the Spiracon roller nut outer case.
of 4
Loading...