Hydraulic Cylinders – Double Acting
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Double Acting with Hydraulic Return
5 to 200 ton |
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| The long piston guidings and the outstanding material
make the cylinders extremely robust and suitable even
for the toughest jobs. |
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| Features |
- Yale ChroMo Design
- Operating pressure 700 bar
- Double acting with hydraulic return
- Long bronze piston guidings
- Piston strokes from 30 up to 500 mm
- Cylinder body and piston are made from chromium-molybdenum
steel and heat treated.
- Generous double bronze bearing on the hard chromium
plated version
- Metric mounting threads on cylinder housing,
in the bottom of the cylinder body and in the piston
rod.
- Stop ring can bear full capacity (pressure)
- With dirt wiper
- Interchangeable hardened saddle
- Oil port thread: 3/8 NPT
- Incl 2 Female coupler halves CFY-1
- From YH-30/200 with carrying handle
- From YH-50/350 with lifting rings
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| Applications |
These extremely robust double-acting cylinders are
specially designed for universal heavy duty lifting
and positioning applications as well as for industrial
production and assembly jobs.
The cylinders offer high
pushing and pulling forces.
The double-acting design
assures a high piston-retraction speed.
Major areas
of application are bridge building and civil engineering,
off-shore, ship building etc.
They can also be used
as a power source in test rigs, frame presses, stamping
fixtures and other
high-cycle industrial uses where pushing and pulling
forces are required. |
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Double Acting with Hydraulic Return
33 to 140 ton |
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In connection with threaded rods, hollow cylinders
can create extremely high forces which are helpful
for various repair or assembly applications like
removing press-fitted parts, pre-stressing of anchors
etc.
In addition, hollow cylinders are used as a power
source in puller sets and test rigs.
By the use
of long threaded rods and by re-adjusting the nut,
longer distances can be pulled. |
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| Features |
- Yale ChroMo Design
- Operating pressure 700 bar
- Double acting with hydraulic return
- Large centre hole diameter
- Cylinder body and piston made from chromium-molybdenum
steel and heat treated.
- Double bronze bearing
- Metric mounting threads at cylinder body
and inside of piston
- Interchangeable hardened saddle
- Inner and out dirt wipers
- Oil port thread: 3/9 NPT
- Incl. 2 Female coupler halves CFY-1
- All cylinders with carrying handle, from
YCH-62/250 with 2 lifting rings
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| Applications |
| Hollow cylinders are used as the power component
within hydraulic puller sets, for pre-stressing of
anchor bolts, removing of axles, shafts, bushings,
extracting of tubes, as well as for heavy duty pulling
applications.
Double acting cylinders have the advantage over
single acting cylinders of being able to retract
the piston quickly and are ideal therefore for
high-cycle pulling applications. |
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YEH – High Tonnage
Cylinders
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Double Acting with Hydraulic Return
260 to 1100 ton |
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| Cylinders of series YEH are normally used for lifting,
positioning or handling of heavy loads. |
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| Features |
- Operating pressure 700 bar
- Double acting with hydraulic return
- Generous guiding bands ensure a robust piston
guiding
- Hard chromium-plated piston
- Stop ring as piston end stop
- Interchangeable hardened saddle
- With dirt wiper
- Oil port thread: 3/8 NPT
- Incl. 2 Female coupler halves CFY-1
- Mounting threads on request
- All cylinders have lifting rings
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| Applications |
Double acting high tonnage cylinders are used for
various lifting, positioning, supporting or levelling
jobs in cases where heavy loads have to be handled.
Lifting
and moving of large machinery, steel construction,
bridges or similar loads, supporting of buildings
and foundations.
Further applications are positioning,
weighing, pressing, stress testing or jacking of
all kinds
of loads.
High tonnage cylinders are found in nearly
all areas of industrial activity like steel production,
heavy machine manufacturing, civil engineering,
ship building, mining, off-shore industry or testing
laboratories. |
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ST – Hydraulic
Stage Lifts
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| Capacities up to 200 ton |
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Stage lifts are compact “low head room” lifting
devices for universal lifting
applications.
They are designed to lift and lower
loads over high distances.
Stage lifts overcome the usual limitations
of the lifting height imposed by stroke length.
Stage
lifts operate with “double acting” hydraulic
cylinders (return stroke by hydraulic pressure)
and are equipped with a load spreading plate and
a piston support plate. |
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| Features |
- Yale ChroMo Design
- High quality materials ensure long service
life
- Stage lift body made from high grade aluminium
- Low cost lifting systems possible, (3-point
resp. 4-point)
- Low weight (e.g. 60kg for a 50 ton unit)
- Large diameter tilt saddle
- Incl. Coupler halves and carrying handles
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| Function |
A stage lift operates inverted and lifts the load
via the bottom of the cylinder whilst it climbs on
a pile of support bars (wood or aluminium).
In principle
the load can be lifted to any height although stage
lifts are still compact and versatile
for “low headroom” lifting applications.
A
further big advantage is that the load can be supported
safely on the pile of support at any
stage.
The simple “3-step operation” eliminates
the need for additional holding arrangements and
the repositioning or replacing of cylinders, which
are normally required for a higher lifting distance.
A
stage lift climbs up and down on its own.
Depending
on the power pack, selected stage lifts can be
controlled individually by hand or motor
pump) or together in a synchronised arrangement
with multi-flow pumps. |
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FULL
SPECIFICATIONS AVAILABLE FROM :
CMCO Material Handling (Pty) Ltd
TEL: International:
(+ 27 31) 700 4388 or in South Africa:
(031) 700 4388
FAX: International:
(+ 27 31) 700 4512 or in South
Africa: (031) 700 4512
Postal Address: P
O Box 15557, Westmead, 3608,
South Africa
Or E-Mail us on: sales@cmcosa.co.za |
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