HYDRAULIC
CYLINDERS
:
FOX-VPS has
nearly forty years experience in the
manufacture of hydraulic cylinders and
in the design of hydraulic systems that
satisfy a wide variety of installations.
These range from the harsh environment
typical of civil engineering applications
through mechanical handling equipment
and on to high quality applications in
fire fighting vehicles
and hovercrafts.
HYDRAULIC
CYLINDERS TYPES
:
• Single
& double-acting cylinders
• Double-ended
through rod cylinders
• Displacement cylinders
• Telescopic and full free lift cylinders
• Position sensing cylinders
• Stainless steel cylinders
• Rotary distribution couplings
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DESIGN
:
Specifications for the
FOX-VPS designed
range of hydraulic cylinders
can be found
here,
also available as a
downloadable
PDF file.
FOX-VPS design
specialist cylinders to meet the ever-increasing
demands from our customers
needs. Our designs are covered by design development
process under our ISO9001:2000 Certification.
We can accept most CAD formats and can export
in DRG, DWG, DXF and PDF.
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CAPABILITIES
:
Our standard range of cylinders goes from
40mm
to 200mm bore and strokes up to 2000mm. Our
specially designed cylinders range from 15mm
to 600mm bore and stroke lengths up to
6000mm with materials to suit most environmental
conditions along with special finishes. Working
pressures can range up to 700 Bar. We also offer
a range of standard
Stainless
Steel Cylinders for
harsh environments, offshore, chemical and food
industries.
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cylinders - specifications - sizes - stainless
steel
SPECIFICATIONS
:
Below
is a list of the basic cylinder specifications
and terminology used, made with reference to
the drawing on the right.
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1. CYLINDER TUBE
ASTM A513 Grade 1026 and DIN 2393 ST52-3
BK with a finish of 0.4UM Ra Max. Other
material and finishes are available.
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2.
PISTON ROD
High quality chrome of a thickness to meet
or exceed Class 9 (ISO 4540) after exposure
for a minimum of 40 hrs (salt spray test
ISO3768). Induction hardened steel or stainless
steel to BS 970 Part 1 421S29 or 316S31
and Chrome with Nickel underlay are offered
as options.
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3. NECK GLAND
High quality cast iron to BS1452: 1990 Grade
250 or Phosphor Bronze to BS140 PB1, PB2
and BS970 Part 1: 080A42 with PTFE insets.
The glands are designed to be fully lubricated
to ensure long service life.
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4.
PISTON
One piece steel design of robust construction.
For heavy-duty applications an additional
bearing ring may be added.
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5.
OIL INLET
BSP female connections are standard but we
offer male BSP, JIC and Metric alternatives.
Also offered are elbows and pipes to manifold
blocks.
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6.
SEALS
We take great care to match the seal material
and design to the customer’s requirements
and take into account the maximum surface
speed, the life expectation and the environment
in which the cylinder operates. The selection
of the correct seal is vital to the successful
operation of our cylinders.
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7.
MOUNTINGS
A wide range from simple pins, to specialist
self-aligning bearings, to trunnion and
flange mountings to suit individual needs.
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8.
WORKING PRESSURE
Our standard working pressure range is up
to 206 Bar (3000 PSI). Please consult our
technical department if you need to operate
at higher pressures of up to 700 Bar (10,000
PSI).
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9.
TESTING
All cylinders are subjected to a static pressure
test 50% above the maximum working pressure.
They are stamped with a serial number.
Full traceability is ensured through our
recorded test/inspection sheets.
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10.
FINISH
Cylinders are sprayed with a black oxide
primer ready for your topcoat. Other finishes
are available on request.
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OPTIONAL FEATURES
VALVES
Pilot operated check valves and hose burst
valves can be built into the cylinders
for safety critical applications. Over-centre
and check valves can also be fitted into
external manifold blocks.
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CUSHIONING
Simple or fully adjustable cushioning can
be provided at one or both ends of the
cylinder stroke. A check valve can be incorporated
into the cylinder design to allow unrestricted
starting on the return stroke. Cushioning
features will affect cylinder length depending
on the rate of deceleration required. Contact
our technical department for details.
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BLEED SCREWS
These can be provided and their location
relative to the inlet connections should
form part of the specification.
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View
Hydraulic Cylinders Gallery
cylinders - specifications - sizes - stainless
steel
DOUBLE
ACTING CYLINDERS - BASIC SIZES
Dimension ‘A' (Body Length) may increase
dependent on stroke and application. For
cylinders other than stated in the table
please consult our technical department.
Max
working pressures 206 Bar. Hydraulic
Cylinder Sizes
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cylinders - specifications - sizes - stainless
steel
STAINLESS
STEEL HYDRAULIC CYLINDERS
BASIC SIZES
This
new range of Stainless Steel hydraulic cylinders
has been added due to the increase in demand
for corrosion-resistant hydraulics. These cylinders
can be used with normal hydraulic oil where
external environmental conditions are not suitable
for mild steel cylinders. Due to the internals
being made completely from stainless steel,
these cylinders are suitable to work with water.
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CYLINDER BASIC
SPECIFICATION
Hydraulic
Cylinder Sizes
Tube – BS970 – 304S15 – AISI
304
Rod – BS970 – 431S29 – AISI
431 (Rods can also be supplied
in BS970 – 316S31)
Internal Parts – BS970 303S21 – AISI
303
External Parts – BS970 304S15 – AISI
304
For strokes longer than stated in the table,
consult our technical department.
Max working pressures 206 Bar.
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cylinders - specifications - sizes - stainless
steel
