PUMPS / POWERPACKS
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HPS/HPH
Hand
Pumps for Single Acting Cylinders |
With infinitely variable release valve
(hand wheel)
Maximum operating pressure 700 bar |
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All steel construction for rough use with high-efficiency
pumping action.
Includes hydraulic oil, carrying handle, reservoir,
ventilation plug and many more features. |
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Air-Hydraulic
Pumps – Model PAY |
| Maximum operating pressure 700 bar |
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These powerful mini-pumps are driven by an air-powered
motor and can be connected to any supply source of
compressed air.
7 Bar air pressure results in 700 bar hydraulic oil
pressure.
For single-acting or double-acting cylinders. |
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Power Packs
Portable, 700 bar |
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These two-stage mini pumps are the ideal power packs
for small and medium sized hydraulic tools.
Examples are: Stamping and punching
tools, hydraulic cutters,
hydraulic puller sets, crimping tools, nut splitters,
etc.
Furthermore, these portable power packs are suitable
for all standard maintenance and assembly jobs to
pressurise hydraulic cylinders with intermediate
operation.
Due to the light weight and ergonomically
designed handle the pumps can be easily carried from
job to
job. Depending on the individual model, these power
packs can operate single-acting or double-acting
hydraulic cylinders.
The ideal combination of solenoid
valve with remote pendant control of the electric
motor offers practical
operation.
By using the push-button box (with 2m cable)
the solenoid valve is controlled and the motor is
switched
on and off, even under full load. |
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| Control Functions |
| Hydraulic Cylinder: - advance – stop – retract |
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| Features |
- Pressure max 700 bar
- Compact design, light weight
- Sturdy “full-metal” construction
- For intermittent operation
- Two-stage output (oil flow)
- 3 Different control valves:
> 2/2-way solenoid
directional valve or 2/2-way manual relief valve
(hand wheel)
> 4/3-way manual directional valve (all in combination with motor start-stop
pendant control
- Reservoir: 3.0 litre, usable: 2.0 litre
- Includes hydraulic oil
- Electric motor can start under full load
- Power supply 230V 50Hz, 0.35kW (also available
in 110V)
- Control voltage 24 Volt / protection IP 50
- Oil port: 3/8 NPT
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Heavy Duty Hydraulic Power Packs
Series: PY-07, PY-11, PY-22
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| Yale hydraulic power packs are easy
to operate as they are ready assembled
and easy to control. The use of power packs is always
recommended when: |
- Jobs have to be done in a time saving and
efficient way.
- Repeating jobs have to finished off.
- Quick cylinder cycles have to be achieved
- Large oil volumes in connection with high
tonnage cylinders have to be transmitted.
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| Two-Stage Oil Flows |
The standard Yale power packs are equipped with
two-stage pumps, which means that a low pressure
stage fills the connected hydraulic cylinder quickly
up to a pressure of 50 bar.
The high pressure stage
is activated automatically from 50 bar up to 700
bar, while the low pressure
stage is discharged back to the reservoir.
This
economic solution avoids heating up, saves energy
and keeps the power packs compact. |
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| Hydraulic Oil |
All power packs are designed to be operated with
standard hydraulic oil (specification ISO VG 32).
For certain operating conditions, the viscosity class
of the hydraulic fluid can be varied.
All power packs
are supplied including oil. |
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| Oil Cooler |
| For certain applications, especially when power
pack are continuously operated and the oil temperature
could exceed 60° C, the use of an oil cooler
is recommended. |
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| Do you need to
operate a ‘single-acting’ or ‘
double-acting’ hydraulic cylinder? |
| The directional control valve has to correspond
to the above mentioned functional principle of the
hydraulic cylinder to be operated. Depending on these
principles, the power packs are equipped with a: |
- 3/3-way valve to operate single-acting hydraulic
cylinders (connection with one hydraulic hose)
- 4/3-way valve to operate double-acting hydraulic
cylinders (connection with two hydraulic hoses)
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| The directional control valves are
available either as ‘
manual’ or ‘solenoid’ operated
valves. |
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| Control and Operation |
| The motion control of the connected
hydraulic cylinder is done by operating the directional
valve. |
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PMF – Multiple
Flow Power Packs
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Multiple-flow hydraulic pumps
can advance 4 cylinders with the same speed at the
same time by injecting equal amounts of hydraulic
oil into each individual cylinder.
This principle
allows synchronised lifting of machines or similar
loads from a central point.
Even under different loading conditions, the cylinders
advance in synchronisation.
A levelling of a lopsided load is easily possible
by an individual control of each single cylinder.
The
lifting phase is initiated by a push-button remote
control and can be interrupted and continued
at any time.
All connected cylinders can be controlled
individually or jointly (synchronous).
Lowering
of the load is done by operating the directional
valve in connection with the throttle
valve individually for each circuit.
The multiple
flow pumps can drive all kinds of hydraulic cylinders,
machine jacks or stage lifts. |
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| Features |
- 4-Point synchronised lift due to 4 equal,
independent and individual oil flows
- 4 Manually operated directional valves, or
4 solenoid directional valves allow an individual
or joint control of all 4 connected cylinders
(easy levelling of a load possible)
- Safe load hold due to check valve in each
circuit
- One man central operation
- Motor on-off switch by means of a pendant
remote control in connection with manual valves,
or 8 button remote control box to operate the
solenoid valves.
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| Scope of Delivery |
For each of the four circuits the ‘ready
to use’ supply includes: glycerine dampened
pressure gauge, 3-way control valve, safety-check
valve, a female coupler-half as connecting port.
Also
includes hydraulic oil, carrying handles, motor on-off
switch, motor connecting cable, pendant
remote control, electro-box with transformer and
motor relay, oil lever gauge and oil filler / ventilation
plug.
All multiple-flow power packs are also available
with 4-way directional valves in order to operate
double-acting hydraulic cylinders. |
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Foot Pump 700 Bar – Model
FPS
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Used to operate single-acting hydraulic cylinders,
especially for repeated applications, such as checking
of welding samples, pressing of connection components
(crimping), actuating of clamping devices, as well
as for
all applications, where it is necessary to keep hands
free.
The pump can be used everywhere, as it is independent
of an external energy source and is easily portable.
An extremely good stability guarantees a comfortable
and safe operation up to the highest
pressure. It is a “real” foot operated
pump, as the return stroke of the connected hydraulic
cylinder is released by foot control. |
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| Features |
- Operating pressure max. 700 bar
- Two-stage displacement
- Absolute stability due to large base plate
- Minimised labour fatigue
- Operating pressure adjustable
- Valves accessible from the outside
- Return stroke of cylinder also controlled
by foot operation
- Oil port 3/8 NPT
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Model PYS
Hydraulic Power Pack
with 4-times Solenoid Valve
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| The quadruple solenoid valve block
ensures a ‘pressure-independent’ and
individual control of 4 double-acting hydraulic cylinders.
Solenoid valves offer several well know advantages
such as: ergonomic and safe control by pendant
remote control, exact load hold, precise and quick
switch characteristics and many more. |
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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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