Hydraulic systems & components


Latest Articles

Counterbalance valve eliminates stalling
2nd Quarter 2009, Axiom Hydraulics
Where the operator controls the feed rate in a cutting circuit, as found in trenching chains, drills, grade trimming wheels or saws, he will typically try to adjust the rate to prevent stall. A problem ...

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Cartridge valve incorporates position switch
2nd Quarter 2009, Axiom Hydraulics
For critical applications where knowing the status of the poppet’s position can offer an added level of safety, Sun Hydraulics has introduced optional closed position monitoring for model LOHC (380 lpm) ...

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Commercial Shearing addds tie-rod cylinders
2nd Quarter 2009
Commercial Shearing has expanded its product range with the introduction of tie-rod cylinders in 50, 75 and 100 mm (2, 3 and 5 inch) bores with strokes from 150 to 1200 mm (6 to 48 inches). This type ...

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Hydraulic accumulators: know your legal obligations
1st Quarter 2009
Users operating hydraulic systems for power transmission purposes may well be inadvertently operating outside of applicable government legislation. Although the applicable regulations are inconsistent, ...

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Protect hydrostatic transmission circuits
1st Quarter 2009, Axiom Hydraulics
In a closed loop hydrostatic transmission circuit, a low side hot oil shuttle valve is used to discharge supercharge oil from the low side of the loop for cooling. But in some fast reversal applications, ...

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Hydraulic torque wrench series launched
1st Quarter 2009
Power Team, a member of the Hytec Group, recently launched its Predator series of electrical and air-driven pumps, and hydraulic torque wrenches. The square drives are available in sizes of ¾”, 1”, ...

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Siemens' hydraulic motion controller
1st Quarter 2009, Siemens South Africa
Siemens Drive Technologies exhibited the new C240 PN Simotion Controller at the SPS/IPC/Drives Trade Fair in late November 2008. It is an S7-300 format member of the Simotion Motion Control System and ...

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Hydrasales turns 30
1st Quarter 2009, Hydrasales
This year Hydrasales celebrates 30 years of growth, development and innovation. This South African distributor of hydraulic filtration and accessories has withstood the test of time and is proud of its ...

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Fluid coupling temperature monitor has 2-week payback
Fourth Quarter 2008
Voith Turbo has introduced the BTM, a non-contact temperature measuring device for fluid couplings. Continuously monitoring coupling temperature enables users to utilise the thermal reserves of the coupling ...

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High torque low speed hydraulic motor
Fourth Quarter 2008, Rand Building Hydraulics
The BMR is a high torque low speed hydraulic motor. It has a wide speed range of 5 to 775 rpm, depending on model size. These hydraulic motors are available in nominal displacements from 50 cm³ to 400 cm³ ...

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Drive unit for road roller wheels
Fourth Quarter 2008
The new series 606 Y drive unit from Bonfiglioli is specifically designed for driving road roller wheels. It is specially shaped and sized for installation on roller-compactors which generally feature ...

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Pneumatic control for hydraulic systems
Fourth Quarter 2008, Axiom Hydraulics
Air-controlled hydraulic pressure control valves use an external pneumatic pressure signal to proportionally and remotely control a hydraulic pressure. These valves are an alternative to hydro-mechanical ...

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Hose and fittings tested to destruction
Fourth Quarter 2008
According to Genflex director, David Michelle, there is no standard machine available that can test the force needed to rip a hydraulic hose from its fitting, with the hose portion still being retained ...

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Hytec adds concrete mixer drum drive
Fourth Quarter 2008, Hytec South Africa
Hytec has announced the addition of the Rexroth A4VTG Series 33 of variable displacement pump to its product range. The series features a closed circuit and swashplate design for easy installation. The ...

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Hooked on a gooseneck
Third Quarter 2008
TowHaul Corporation has every intention of staying the world’s no. 1 manufacturer of customised lowboys and towhooks for the mining industry. That is why it opted for the Sauer-Danfoss PVG 100 – the valve ...

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Lower suspensions: better performance
Third Quarter 2008
Every hydraulic system has suspended particles in its fluid. These particles can be introduced from outside the system or from the movement of metal parts within the system and they reduce the effectiveness ...

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Commercial shearing: an hydraulic valve for all occasions
Third Quarter 2008
The range of hydraulic valves available from Commercial Shearing is extensive. Here we feature information on a few. The company also supplies custom-designed components, valves for a high flow rate and ...

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Sun's new hybrid valves
Third Quarter 2008, Axiom Hydraulics
Sun has introduced a new family of combination valve cartridges that incorporate a relief and check function into a single cartridge. And since both functions exist in one, only one cavity is required. ...

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Innovation at work: Hydromobile's electro-hydraulic actuators
Third Quarter 2008, Hydromobile S.A.
Innovation is the inspiration of Hydromobile SA which has established a reputation for quality hydraulic components in the market place. The company’s electro-hydraulic actuator is an example of its originality. ...

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Importing hydraulic hose? Caveat emptor - reearch and relationships are crucial
Third Quarter 2008
“The recent increase in importation of hydraulic hose from the Far East has not been without its problems. Following up on leads with suppliers of hydraulic hose and fittings in China during my recent ...

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