Rotec shortlisted in two categories at the 2022 Somerset Business Awards

The most outstanding businesses that Somerset has to offer have been recognised in the shortlist for the 2022 Somerset Business Awards.

It has been revealed that Rotec Hydraulics Ltd has been shortlisted in two categories at the awards – ‘Best Use of Technology’ and ‘Somerset Manufacturer and Producer’ Award.

Michael Cahill, of main awards sponsor, Albert Goodman, said,

“The fantastic Somerset business community is bouncing back strongly and The Somerset Business Awards is a great way to celebrate the hard work, ingenuity and resilience our local businesses have shown during the difficult 18 months we have all had. Albert Goodman is extremely proud to continue our longstanding sponsorship of this brilliant event.”

Rotec Hydraulics Ltd embraces new and emerging technologies to provide our clients with cutting-edge solutions for first-class motion control capabilities. As a result of investing in Parker IoT technologies to further enhance our business offer, Rotec has been shortlisted for the ‘Best Use of Technology’ category at the 2022 Somerset Business Awards.

Shortlisted for the ‘Somerset Manufacturer and Producer of the year’ category at this years’ awards, is testament to Rotec’s innovative development of a number of bespoke winch systems for major names within the Utilities sector.

Paul Prouse, Managing Director of Rotec Hydraulics, commented,

“We are extremely proud to have been shortlisted for two Somerset Business awards. Investing in and utilising cutting-edge motion control technologies and providing innovative solutions for our clients has always been at the heart of our business. Being shortlisted is a testament to our fantastic team of employees who have continued to provide solutions and outstanding products and services to our customers throughout a challenging period for all businesses.”

Now in its 17th year, the award winners are scheduled to be announced at a black-tie event on 11th March 2022 at the Winter Gardens Pavilion in Weston-Super-Mare. To find out more, click here.

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How to prevent hydraulic oil overheating

Overheating is the second most common issue that occurs in hydraulic systems, behind leakages. Overheating of hydraulic systems is caused by inefficiencies which have resulted in loss of input power being converted to heat. To achieve stable fluid temperature, a hydraulic system’s capacity to dissipate heat must exceed its heat load. Overheating can be avoided by a reduction in hydraulic oil heat load and/or increasing heat dissipation.

Why reduce oil temperature?

Hydraulic fluid temperatures above 82°C (180°F) is likely to lead to oil degradation and cause damage to hydraulic seal compounds. While the operation of any hydraulic system at temperatures above 82°C should be avoided, fluid temperature is too high when viscosity falls below the optimum value for the hydraulic system’s components. This can occur well below 82°C, depending on the fluid’s viscosity grade (weight). To achieve a stable oil temperature, the hydraulic system must be able to dissipate heat faster than it is built up.

Heat dissipation

Heat dissipation occurs in the hydraulic reservoir. Regularly check there are no obstructions to the air flow into the reservoir and that fluid levels are correct.

Heat exchangers

Similarly to the reservoir checks, ensure the core of heat exchangers are not obstructed. Heat exchangers rely on flow-rate, hydraulic oil temperature and coolant in order to disperse heat suitably. It is vital that faulty cooling circuits are replaced. Infra-red thermometers are a reliable way to measure the performance and oil flow rate of heat exchangers.

Oil pressure and leakage

Reduction in system pressure or oil leakage will cause increased heat generation. It is critical that the cause of the leaking is identified and then rectified appropriately. If a relief valve is underneath or positioned too closely to the pressure setting of a pressure-compensator in a closed-centre circuit, it may lead to increased heat generation and the system pressure cannot reach the pressure compensator setting. Subsequently, the component will continue to move oil thorough the system, passing over the relief valve, which produces heat.

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Rotec designs and builds a bespoke remote-controlled hydraulic roof window system

This unique, custom built hydraulic power unit and four cylinders was designed and made at our Taunton depot. Engineered in house, the system forms part of a remote-controlled hydraulic roof window system for a private residence. 

The hydraulic power unit, designed and built in house, incorporates a 4 Kw 415V Electric motor with a tandem Galtech gear pump, electrical solenoid operated pump unloading valves, electrical solenoid operated directional control valves and integral return line filtration.

Our engineers have also fitted a bespoke custom made electrical control system installed onto the power unit to enable our customer to control the roof windows remotely.

There are four hydraulic cylinders in total measuring 80mm bore x 40mm rod x 700 stroke. The cylinders, customer designed and made at Rotec feature integral adjustable cushioning both on the full bore and annulas side, self-aligning spherical bearings and dual load holding motion control valve fitted and hard piped to both the full bore and annulas sides.

Finished with a high build paint scheme in a colour choice of our customers, the cylinders are configured for additional external fitment of a string pot position sensor.

Custom made hydraulic winch system for the utilities sector

Rotec Hydraulics Ltd has recently completed works on a custom made hydraulic winch system for the utilities market.

Fitted to a fleet of Ford Ranger vehicles, these bespoke winches have been designed, built, installed and tested by our in-house team of engineers and include a hydraulic system, electronic control system and mechanical components.

The Capstan winch is specifically designed for fast line speeds and has a 350Kg working load limit with a remote electrical foot pedal operation

Safety features include an integral fail safe static brake and integral dynamic braking.

The Capstan winch drum is made of stainless steel and the winch is deployed on a sliding system to allow the operator to move it from stored position to operational position easily.

Our client is one of the world’s largest publicly listed utilities focused on transmission and distribution of electricity and gas. They play a vital role in connecting millions of people to the energy they use safely, reliably and efficiently. Rotec has worked with this organisation for several years and are proud of the strong, effective relationship we share.

At Rotec the team work on many different projects.  Much of the work undertaken requires the integration of knowledge and skills from across the Rotec team, to deliver all of the elements that make up a client brief. For more information on the services we offer, please click here.

 

Custom Designed Winching Systems

Isuzu Dmax

Rotec have been working with the Utility market for the last 20 years – designing and manufacturing winch systems for overhead line teams throughout the UK. Traditional vehicles such as landrovers were deemed the work horse and industry standard. Working with a number of organisation the challenge to replace the landrover centred on certain replacement vehicles – such as the Isuzu DMAX.

The bespoke system includes the following:

  • Electro-hydraulic PTO (Power Take Off) for the pump
  • Custom designed hydraulic manifold assembly, which uses an electronic proportional directional control valve
  • Dual pressure control which allows for pressure selection
  • Custom made hydraulic reservoir
  • Custom electronic control system, including a remote pendant with joystick control as well as a 2nd joystick located in the cab
  • Integrated electronic hand throttle for the engine
  • Quality winch and Parker hydraulic hose supplied with pressure test certification which can be traced throughout the Parker network using PTS system

The system operates in two work modes:

  • Lifting mode: capable of lifting up to 1550 Kg (SWL)
  • Self – recovery: capable of pulling 3600 Kg

The bespoke system is designed and manufactured completely in-house, fully – tested prior to despatch.

Grain ship-loader replacement electro-hydraulic control system

Thanks to the working relationship spanning many years, Rotec were invited to quote for the replacement of the hydraulic power unit and controls of the grain/feed products ship loader travelling gantry system. The client was faced with reliability and obsolescence issues with the original equipment dating back to the 1980s. It is the only plant capable of this function at the port and is in use constantly.

The ship loader hydraulic functions consist of a dual pumping system and associated hydraulic equipment built into an up-cycled twenty-foot shipping container. The container sits on the machine approximately 20 metres above dock level, which presented some unique access issues.

 Based on the original system design, Rotec designed and manufactured a complete self-contained hydraulic system and associated dedicated electrical control panels which control vertical and horizontal movements of the grain conveyors and loading chute to align over the vessel’s holds as required.

The container was specially modified to accept and fit the hydraulic system. This included full sound and fireproofing, internal full bunding and bespoke flooring and ventilation integration. The hydraulic system consists of a primary pump system driven by a 100KW 3300VAC electric motor and proportionally controlled variable displacement pump with a completely redundant secondary backup system in case of partial or total power loss. This 400VAC backup system is supplied from an external generator and is used to recover the chute off a vessel during a power loss when necessary. The main pump systems are supported by cooling and filtration systems and associated electrical control and monitoring equipment which in turn all interface and interlock to the main ship loader external control system.

21The project initially began in 2017, but project was temporarily halted by Brexit and later on, the outbreak of COVID-19. However, following a major fire one evening whilst in use on a vessel which completely destroyed the old containerised system, surrounding cabling and pipework, the project objectives and target completion date was rapidly brought forward to minimize the client’s downtime.

Due to our very flexible approach and ability to respond to an everchanging priorities list, Rotec was able to pick up and resume the build process quickly and managed to complete and factory test the unit ready for site delivery and install by the end of May. Our on-site engineers in the meantime stripped out and replaced large quantities of fire damaged external fixed stainless and special alloy tubing and replaced all external flexible hoses on the machine. The container unit and system were craned into place, pipework connections completed then flushed thoroughly. The system has now finished its commissioning and setting to work process, on time and on budget, and is ready to serve the port for this vital service for at least another 30 years minimum. The client is completely satisfied with the product and service received by him by our team of design, manufacturing, and field service personnel.