world american hydraulic pump free sample

World American is the Heavy Duty and Export Division of Midwest Truck & Auto Parts, Inc. We supply drivetrain, brake, steering, electrical and hydraulic components to the heavy, duty aftermarkets. Specifically, we distribute Manual Transmission & Transfer Case Components, Differential Components, complete Rebuild Kits, Bearing Kits, Ring & Pinion Gear Sets, Cases, Housings, Axles, Yokes, U-Joints, Air Brake Valves, Brake Chambers Brake Hardware Kits, Air Springs and more.

Complete hydraulic wet line kits and related parts to meet the ever demanding mobile hydraulic market. Replacement parts for Chelsea® brand power take offs, and Commercial® style pumps.

Hard-to-find transmission components, at the best prices. World American’s new i-shift catalog contains the most common wear parts. This catalog continues to expand, check back often.

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Companies: 10+ – Including Bailey International LLC, Bosch Rexroth AG, Bucher Hydraulics GmbH, CASAPPA SpA, Caterpillar Inc., Dalian engineering, Danfoss AS, Dynamatic Technologies Ltd., Eaton Corp. Plc, Enerpac Tool Group Corp., HYDAC Verwaltung GmbH, Kawasaki Heavy Industries Ltd., Linde Hydraulics GmbH and Co. KG, Mitsubishi Heavy Industries Ltd., Oilgear, Parker Hannifin Corp., Permco Inc., Salami SpA, Tuthill Corp., and Daikin Industries Ltd. among others

Companies profiledBailey International LLC, Bosch Rexroth AG, Bucher Hydraulics GmbH, CASAPPA SpA, Caterpillar Inc., Dalian engineering, Danfoss AS, Dynamatic Technologies Ltd., Eaton Corp. Plc, Enerpac Tool Group Corp., HYDAC Verwaltung GmbH, Kawasaki Heavy Industries Ltd., Linde Hydraulics GmbH and Co. KG, Mitsubishi Heavy Industries Ltd., Oilgear, Parker Hannifin Corp., Permco Inc., Salami SpA, Tuthill Corp., and Daikin Industries Ltd.

The hydraulic pumps market is fragmented and the vendors are deploying growth strategies such as increasing their market presence through mergers and acquisitions, and expansion activities to compete in the market.

Story continuesBailey International LLC- The company offers hydraulic pumps such as chief two stage pump 11 gpm and chief two stage pump 16 gpm. Moreover, it is a privately held company headquartered in the US. It is a global company, with limited information regarding its financials and limited information regarding its employee strength is available. Its revenue from the global hydraulic pumps market contributes to its overall revenues along with its other offerings, but it is not a key revenue stream for the company.

55% of the market"s growth will originate from APAC during the forecast period. China and Japan are the key markets for hydraulic pumps in APAC. Market growth in this region will be faster than the growth of the market in the European, North American, and South American regions.

The rapid urbanization and the need to improve connectivity between different regions will facilitate the hydraulic pumps market growth in APAC over the forecast period.

Hydraulic pumps are extensively used in the oil and gas sector. They are used as an alternative to gas lift systems and electric submersible pumps (ESPs). Hydraulic pumps are also favored and used where high flow rates are required, such as in wells having a heavy concentration of sand or other solids from frac operations, as they can handle high gas volumes. The global oil and gas industry is presently undergoing significant expansion and is a primary driver for the growth of the global hydraulic pumps market. There are a lot of factors leading to the expansion of the global oil and gas industry. The demand for oil and natural gas is increasing steadily due to improvements in global economic growth. The global consumption of natural gas exhibited a significant rise due to the increasing adoption of natural gas as a fuel in the last decade. Also, with the rise in fuel consumption from developing economies such as China and India, the demand for natural gas is expected to grow significantly during the forecast period. The rise in investments in E and P activities will increase the demand for hydraulic pumps. These factors will thus drive the growth of the global hydraulic pumps market during the forecast period.Hydraulic Pumps Market Trend:

Hydraulic fluids, including lubricants, perform various functions, including protection against corrosion and wear, transferring contaminants to filters, and dissipating heat from hot zones. However, under certain conditions, these lubricants become flammable. Furthermore, there is a risk of small leaks when lubricants are pressurized in hydraulic lines. The hydraulic system becomes more susceptible to fire due to these leaks. One of the important parameters to consider in selecting the appropriate hydraulic fluid is the operating temperature, which can determine the degree of fire protection required. Some of the industrial applications of FRHFs include mining, die-casting, offshore applications, power generation, iron, and steel industry, among others. They do not readily ignite when sprayed under pressure. Besides providing lubrication and being non-corrosive, glycol fluids are more cost-effective than other hydraulic fluids. Utilizing FRHFs can not only ensure the safe operation of the hydraulic pumps but may even reduce the need for a fire-suppression system. Thus, end-users can prevent and minimize the risks of any fire-related losses by replacing the flammable hydraulic oils with fire-resistant fluids in the hydraulic systems. Such trends can have a positive impact on the growth of the market during the forecast period.

Pump Jack Market by Application and Geography - Forecast and Analysis 2022-2026:The pump jack market share is expected to increase by USD 987.08 million from 2021 to 2026, and the market"s growth momentum will decelerate at a CAGR of 4.78%. To get more exclusive research insights:

Hydraulic Dosing Pump Market by End-user and Geography - Forecast and Analysis 2022-2026:The hydraulic dosing pump market share is expected to increase by USD 247.98 million from 2021 to 2026, and the market"s growth momentum will accelerate at a CAGR of 5.59%. To get more exclusive research insights:

10 Vendor Analysis10.1 Vendors covered10.2 Market positioning of vendors10.3 Bailey International LLC10.4 Bosch Rexroth AG10.5 Bucher Hydraulics GmbH10.6 CASAPPA SpA10.7 Danfoss AS10.8 Eaton Corp. Plc10.9 Enerpac Tool Group Corp.10.10 Kawasaki Heavy Industries Ltd.10.11 Mitsubishi Heavy Industries Ltd.10.12 Parker Hannifin Corp.

11 Appendix11.1 Scope of the report11.2 Inclusions and exclusions checklist11.3 Currency conversion rates for US$11.4 Research methodology11.5 List of abbreviationsIn manufacturing industry: Market dynamics in some major processes and discrete industries are changing drastically, and manufacturers are gradually feeling the brunt of excessive demand fluctuations. The fluctuating prices of oil and gas and metals in the global market and the shortage of a skilled workforce worldwide have directly affected the profitability of manufacturing companies. A sudden and unexpected shift in market dynamics can drastically impact manufacturing processes and investments in capital goods.Slowdown in the automotive industry: High motorization rates in North America and Europe, the increase in tariffs on imported vehicles in the US and China, and the global economic slowdown are likely to reduce vehicle sales in the coming years. Anticipating a decline in vehicle sales, several vehicle manufacturers are halting their vehicle production. For instance, in March 2019, Ford announced the shutdown of its three vehicle-manufacturing sites in Russia. Similarly, in August 2019, Mahindra and Mahindra Ltd. stopped vehicle production at its manufacturing units in India for 8-14 days. During the same month, Maruti Suzuki announced that it had cut its vehicle production for the sixth consecutive month in 2019. In August 2019, Honda announced a halt in car production at its Argentina-based manufacturing plants. Such a slowdown in the automotive industry is expected to hamper the growth of the market during the forecast period.

The hydraulic ram pump – commonly referred to as a hydram – pumps water from its source to a community. It utilises the natural power of falling or rapidly moving water, meaning the hydram requires zero external energy supply to operate. This process works on a principle called ‘water hammer’, where a large amount of quickly moving water is pushed through a small opening to create pressure. As pressure builds within the system it reaches a critical point that then lifts a fraction of the water flow. These smaller amounts of water are repeatedly lifted and ultimately collected in a storage tank placed above a community. The storage tank then feeds water back down to the community using gravity. A single hydram can lift water up to 200 vertical metres and supplies roughly 20,000 litres of water per day (enough to fill 250 baths) to a community.

Hydrams are particularly useful in remote mountainous regions where communities live high above their nearest water source. This allows people to save valuable time since they no longer have to go on faraway journeys to water sources via dangerous mountain paths. Most importantly, hydrams require a high-volume water source to operate effectively. This is because the hydram only lifts a small fraction – roughly 10% – of the water that flows through the pump. It therefore does not make sense to install a hydram at a small stream. In cases of lower-volume water sources, a SolarMUS system makes more sense!

Did you know that we have installed hydrams in 13 communities in Nepal? This means convenient, reliable water for more than 2,500 people. These pumps continue to lift more than 260,000 litres of water (the equivalent of filling 3,250 baths) per day. Families no longer spend hours fetching water. This means more time for business, school, and play.

– The pump is placed below a water source and connected to it with a pipe, called a drive pipe. Gravity feeds the water down the drive pipe to a chamber in the pump.

Hydraulic Pump Market was valued at US$ 9.8 Bn. in 2021. Global Hydraulic Pump Market size is estimated to grow at a CAGR of 4% over the forecast period.

From 2021 to 2029, the global hydraulic pump market is expected to grow at a CAGR of 4%, from $9.8 billion in 2021 to $12.90 billion in 2029. Hydraulic pumps transform mechanical energy into hydraulic or hydrostatic pressure. Such forces give adequate energy support for the movement to manage power at the pump channel impacted by the load. The vacuum formed at the pump entry drives the fluid from the reserve into the pump entrance line during hydraulic pump operations.

Rapid development and urbanization in important developing nations such as China and India are driving the expansion of the hydraulic pumps industry. Because of the expanding urban population, many countries are seeing fast industrialization. As a result, there has been an increase in consumer demands and products, affecting the expansion of end-use sectors.

Hydraulic pump demand has been directly impacted by the cumulative growth of end-use industries. Hydraulic pump demand is predicted to rise strongly throughout the forecast period, with a high number of manufacturing sectors being established and planned expansions taking place across industries.

Governments in emerging economies in Africa and Asia, particularly in India, China, and South Africa, are stepping up efforts to enhance drinking water availability in rural and urban regions. The demand for hydraulic pumps is expected to develop significantly in the next years as a result of increased government investments and activities.

Factory automation has progressively gained traction in recent years. Intelligent machines are being used extensively by the construction equipment industry to increase the rate of industrial output and make it more energy- and cost-efficient. They are also concentrating on lowering trash output in order to maintain the sustainability quotient. End users are adopting alternative pump solutions hydraulic gear pumps to satisfy the evolving requirements of consumers around the world, owing to their operational inefficiency when compared to more advanced counterparts available on the market. In agricultural equipment, for example, electrically operated medium pressure pumps are frequently preferred over gear pumps. Over the projected period, demand for hydraulic gear pumps is expected to be hampered by the increasing adoption of various alternative pumping solutions such as piston pumps.

Hydraulic gear pumps have long been utilized in a variety of applications due to their simple design, adaptability, and ease of operation, as well as their diversity. Hydraulic gear pumps are an excellent alternative for a variety of chemical and industrial processes because of these qualities. Furthermore, when compared to other pump types available on the market, the price of a hydraulic gear pump remains within a reasonable range.

In the construction business, hydraulic pumps, particularly gear pumps, are widely employed. The market for construction equipment is likely to be driven by the widespread use of construction equipment in operations such as excavation, earthmoving, and lifting and material handling. Manufacturers are expanding their investments in machine tools in both developed and developing countries in order to improve their production processes and systems. The building industry and hydraulic systems will benefit from the maturation of both of these areas in the coming years. The market is being propelled forward by an increase in construction activity as well as rising construction spending in various countries. According to a World Bank poll, building investment is expected to exceed $11.9 trillion by 2021.

East Asia, particularly China and Japan, will continue to be the leading consumers of hydraulic gear pumps due to the presence of several manufacturing facilities for construction equipment, material handling equipment, and construction equipment, including key players such as Mitsubishi, Hangcha Group, and Komatsu Ltd. Japan alone has a larger market share than Latin America and the Middle East and Africa combined.

The objective of the report is to present a comprehensive analysis of the global Hydraulic Pump Market to the stakeholders in the industry. The past and current status of the industry with the forecasted market size and trends are presented in the report with the analysis of complicated data in simple language. The report covers all the aspects of the industry with a dedicated study of key players that include market leaders, followers, and new entrants.

The reports also help in understanding the Hydraulic Pump Market dynamic, structure by analyzing the market segments and projecting the Hydraulic Pump Market size. Clear representation of competitive analysis of key players by Vehicle type, price, financial position, product portfolio, growth strategies, and regional presence in the Hydraulic Pump Market make the report investor’s guide.

During the historic forecast period in 2019, the hydraulic pumps market analysis shows that the market was valued at a revenue figure worth USD 4.13 billion. During the current period, the market experts and industry leaders predict that for the ongoing forecast period of 2022-2030, the market is expected to grow at a global CAGR of 6.25% during the period and reach a final market value worth USD 14.83 billion.

Research for aerosolized insulation that helps in inhalation or oral insulation alongside the availability of hydraulic-producing pumps and stem cell explanations are likely to help the market with the help of growth opportunities and positive attributes during the forecast period. As a result, the Medtronic hydraulic pumps market share is expected to grow substantially and emerge as one of the dominant market players during the forecast period that ends in 2030. Furthermore, the infrastructural developments, automation across industries, such as manufacturing and automotive, and increased construction activities will drive the growth prospects for hydraulic pumps until the forecast period.

The global governments understand the misery of the market players and, hence, ease the restrictions that will help better function the hydraulic pumps market players and generate a demand that helps in returning to the normalcy rate that was before the pandemic hit in 2019-2020. Also, the key market players are investing in product development and launch at a larger scale that will help the market add innovation and creativity for the target audience and push for growth opportunities during the ongoing forecast period of 2022-2030.

The global rise in population is witnessing an increase in obese people and its connection with the genetic factors related to type-2 diabetes. Also, the increase in the number of patients who have type-1 diabetes is likely to present the market with growth opportunities that will help enhance the hydraulic pumps market share during the forecast period of 2030.

The demand for type 1 diabetes hydraulic pumps is already high amongst the people suffering from the same on the global scale. In addition, there is a significant growth in type 2 patients. Also, the ratio of children to adults and the rise in types 1 and 2 shows excellent opportunities for growth across various countries during the forecast period of 2030.

However, one of the significant factors that are likely to develop restraints that will bar the market from growing as per the predictions is a lack of awareness regarding hydraulic pumps. Also, the ones who are aware face difficulties in the form of low spending power or the price not matching their budget. There are fewer options available for people to buy these pumps on a budget, and hence, there is an urgent need for the market players to opt for cheaper yet qualitative alternates. Although the initial cost of assembling the pump is low, the cost of maintenance over the entire lifespan is high, which is a challenging factor. The salvage value of the parts decreases over time too, which restrains the companies from buying new pumps.

Hydraulic pumps, particularly gear pumps, are primarily used in construction. In addition, in both developed and developing countries, manufacturers are increasing their investments in machine tools to enhance their production processes and systems. The rise in construction activities coupled with increased construction spending across various countries contributes to advancing the market. For instance, according to a survey by World Bank, construction spending is estimated to reach a market value worth USD 11.9 trillion by 2020.

Due to the pandemic, the hydraulic pumps market operations have undergone a lot of suffering. Hence, the report aims to understand the changing dynamics related to the drivers, opportunities, and restraints that will lead the market towards growth as predicted by the industry experts for the forecast period between 2022-2030.

The global Hydraulic Pumps Market report aims to help and study the scope of the market and the ability of the market players to cater to the rising and vibrant needs of the target audience that is spread in various regions across the globe. Also, the report aims to highlight the availability of resources and equipment to the domestic market based on these segments.

The global Hydraulic Pumps Market report helps to draw a competitive graph amongst the rising efforts and results witnessed by the prominent players of the market and also discuss the development of scenarios and advent of technology that will enhance the ability of the market to grow as per the predictions during the forest period that ends in 2030.

Based on the need of the investors to have an idea about the future of hydraulic pumps, the market is studied based on the performance of its segments for an array of target audiences in the global scenario. As a result, the market has been segmented based on the following:

The hydraulic pumps market has been segmented based on the end-user vertical and includes the construction sector, mining, machinery, agriculture, oil and gas, and many others like the automotive sector.

The resource and audience distribution for the hydraulic pumps market trends show that the market has been divided into 4 significant segments: the APAC region, North America, Europe, and the rest of the world.

The hydraulic pumps market share is expected to be the maximum in the Asian Pacific market. Agriculture is placing the most significant demands on water in Asia and the Pacific, as rising populations, rapid urbanization, and energy, industrial, and domestic use have left water stocks in a critical state.

Hydraulic pumps use fewer moving parts through the mechanical and electrical systems. Thus they become more straightforward to maintain. The water flow can be sped up, slowed down, or stopped using simple controls, which becomes easy for farmers.

In June 2019, one of the market companies - Allegro Funds had agreed on terms to invest in Questas Group, a company founded more than 20-years ago and provides hydraulic, irrigation, pump, and engineering solutions to the mining, construction, agricultural and general industrial sectors.

In June 2019, the prominent submersible pumps manufacturer HOMA Pumpenfabrik GmbH unveiled a new submersible motor agitator with an optimized propeller hub to minimize dead flow zones and prevent clogging.

In March 2018, another market company - Kawasaki Precision Machinery at Hannover Messe highlighted the electro-hydraulic hybrid system, KAWASAKI ECO SERVO, for industrial applications. This new system combined the best Kawasaki technology to bring excellent controllability and high efficiency to applications, such as press machines, injection molding machines, and steel manufacturing.

The global hydraulic pump market size was estimated to be USD 7,894 million in 2016 and is expected to grow over the forecast period driven primarily by the growth in mobility and industrial market. In addition, growing demand for environment friendly products with minimum emission of CO2 and minimum energy consumption is projected to provide further growth impetus.

Growth in the automobile industry that uses the hydraulic pump in cars, trucks and other vehicles as a power generating mechanism shall propel the demand over the next few years. Usage of hydraulic pumps in excavators, cranes, loaders, tractors, vacuum trucks, dump trucks, and other such vehicles that are extensively used in construction and industrial sector will also present growth opportunities.

Buoyed by properties such as fire resistance and corrosion free,and coupled withflourishing industrial and construction segment, hydraulic pump market is expected to grow over the forecast period. However, resilient competition fromlow-cost manufacturersis expected to be among the growth restraints over the forecast period.

Gear pump accounted the maximum revenue share of over 50% in the year 2016 followed by vane and piston pump. Gear pumps are less expensive owing to simple design and ease of construction moreover, maintenance cost and breakdowns vis-à-vis other types of hydraulic pumps is much lesser.

Piston pumps are expected to be the fastest growing segment owing to high efficiency, reliability and high pressure. Piston pumps are also used as Oil recovery pump in some parts of UAE, Kuwait and Iraq which is further expected to grow the market of hydraulic piston pumps.

Mobility was the highest revenue generating segment of the total market accounting for 56.46% of revenue share in the year 2016. The mobility segment is expected to show promising growth as compared to industrial segment owing to thelarge-scale use of hydraulic pumps in mining, agriculture, and constructionactivities.

The industrialsegment accounted forthe remaining market share and is expected to surgeover the forecast period owing to increasing use of hydraulic pumps in industries that involveheavy and repetitive work.

North America, Europe, and Asia Pacific are the primary market by region for this Industry. North America is the leading market for hydraulic pumps, followed by Asia-Pacific and Europe as second and third largest revenue generating regions accountingfor over one-third andone-fifth of market revenue share in the year 2016.

Growing agriculture and construction sector in India and China is expected to boost the market for hydraulic pumps over the forecast period 2017-2024.High demand for quality products and cost-effective solution is expected to propel market growth in Central and South America.

The Middle East region accounted nearly 30% of world oil production in 2014 and adding further, increase in use of artificial pumping system in countries like Saudi Arabia, UAE, and Iran to extract more oil from the reservoir will add to the growth of the hydraulic pumps industryover the coming years.

The global hydraulic pump market is highly competitive and is expected to grow over the forecast period. With technological advancement, product innovation, and product extensions the competition is further expected to get intensified.

When a hydraulic system fails, finding the source of the problem can be a challenge. Though hydraulic systems primarily consist of a sump, motor, pump, valves, actuators and hydraulic fluid, any of these parts could be the source of failure. That"s not to mention the additional potential for failure through human error and faulty maintenance practices. If your system fails, you need to know why it fails, how to find the failure and how to keep it running smoothly in the future, all while keeping personnel safe.

It"s often easy to tell when a hydraulic system fails — symptoms can include high temperatures, low pressure readings and slow or erratic operation are glaring problems. But what are the most common causes of hydraulic systems failures? We can trace most hydraulic issues back to a few common causes, listed below.

Air and water contamination are the leading causes of hydraulic failure, accounting for 80 to 90% of hydraulic failures. Faulty pumps, system breaches or temperature issues often cause both types of contamination.

Air contamination is the entrance of air into a hydraulic system and consists of two types — aeration and cavitation. Both can cause severe damage to the hydraulic system over time by wearing down the pump and surrounding components, contaminating hydraulic fluids and even overheating the system. Although we are not pump manufacturers, we know it is essential to be aware of these types of contamination and how to identify their symptoms.

Cavitation:Hydraulic oil consists of about 9% dissolved air, which the pump can pull out and implode, causing pump problems and damage to the pump and to other components in a hydraulic system over time. You can identify this problem if your hydraulic pump is making a whining noise.

Aeration:Aeration occurs when air enters the pump cavity from an outside source. Usually, loose connections or leaks in the system cause this issue. Aeration also creates a sound when the pump is running, which sounds like knocking.

Water contamination is also a common problem in hydraulic systems, often caused by system leaks or condensation due to temperature changes. Water can degrade hydraulic components over time through oxidation and freeze damage. A milky appearance in hydraulic fluid can help you identify water contamination.

Fluid oxidization: Extreme heat can cause hydraulic fluid to oxidize and thicken. This fluid thickening can cause buildups in the system that restrict flow, but can also further reduce the ability of the system to dissipate heat.

Fluid thickening:Low temperatures increase the viscosity of hydraulic oil, making it harder for the oil to reach the pump. Putting systems under load before the oil reaches 70 degrees or more can damage the system through cavitation.

Fluid levels and quality can affect hydraulic system performance. Low fluid levels and inappropriate filtration can result in air contamination, while fluid contamination can cause temperature problems. Leaks can further exacerbate both issues.

Using the correct type of fluid is also essential, as certain hydraulic oils are compatible with specific applications. There are even oil options that offer higher resistance to temperature-related problems. Some oils even offer anti-wear and anti-foam additives to help prevent against wear and air contamination, respectively.

Human error is the base cause of many hydraulic system problems. Some of the most common errors that may result in your hydraulic pump not building pressure include the following.

Faulty installations: Improper installation of any component in a hydraulic system can result in severe errors. For example, the pump shaft may be rotating in the wrong direction, negatively affecting pressure buildup, or pipes may be incorrectly fitted, resulting in leaks.

Incompatible parts: An inexperienced installer may put mismatched components together, resulting in functional failures. For example, a pump may have a motor that runs beyond its maximum drive speed.

Improper maintenance or usage:Using systems outside their operational capabilities or failing to perform regular maintenance are some of the most common causes of hydraulic system damage, but are easy to rectify through updated maintenance policies and training.

The sources of system failures can be tricky to identify, but some hydraulic troubleshooting steps can help narrow down the options. So how do you troubleshoot a hydraulic system? Here are some of the fundamentals.

Check the pump: Take the pump assembly apart and assess all parts to ensure that they are functional and installed correctly. The most common problem areas include the pump shaft, coupling and filter.

Check the fluids:Check the level, color and viscosity of the hydraulic oil to ensure it meets specifications and has not become contaminated. Low hydraulic fluid symptoms include pressure or power loss. When in doubt, drain and replace the fluids.

Check the seals: Look for evidence of any fluid leakage around your hydraulic system"s seals, especially the shaft seal. Leakage can indicate worn-out or blown seals that can cause malfunctions with pumps, motors and control valves.

Check the filters: Ensure filters are clear of plugs and blockages. Common clogged hydraulic filter symptoms include sluggish operation and noisy operation.

Hydraulic system issues are inevitable at some point. However, simple steps can help you avoid these issues and increase the longevity of your hydraulic system. On top of effective troubleshooting, you can prevent hydraulic system failure by taking the following steps.

Follow specifications: We can trace the most common hydraulic system issues back to fundamental system problems like incompatible or improperly installed parts. For this reason, it"s essential to always double-check specifications to ensure your purchased parts can work together seamlessly.

On top of these steps, look into hydraulic system products that are specifically designed to help prevent failures. One such product is Bear-Loc® by York Precision. This innovative locking actuator is a safe, reliable feature for hydraulic components, automatically locking when sleeve pressure is relieved, preventing movement if a hydraulic system fails. This way, your can protect your personnel from injuries related to hydraulic failures. Even better, York Precision offers in-house design, engineering expertise and machining and manufacturing capabilities to produce a hydraulic locking device that meets your exact specifications.

Regularly review hydraulic system maintenance, always following manufacturer recommendations and industry best practices. Also, consider the storage condition, external influences, working pressure and usage frequency of your system to tailor your maintenance schedule and procedures.

Daily tasks:Take care of a few simple daily checks to avoid issues. For example, personnel should check the oil levels, hoses and connections and listen to the pump for abnormal sounds.

Be mindful of location:Do not stand at endpoints while working on hydraulic systems. This safety measure can help prevent loss of limb and life, as there is a lot of pressure built up in these areas that can release and result in life-threatening situations.

The best safety measures, however, are to perform excellent maintenance and use high-quality parts. If you"re looking for a quality hydraulic component manufacturer, York Precision Machining & Hydraulics can help.

Check that the pump shaft is rotating. Even though coupling guards and C-face mounts can make this difficult to confirm, it is important to establish if your pump shaft is rotating. If it isn’t, this could be an indication of a more severe issue, and this should be investigated immediately.

Check the oil level. This one tends to be the more obvious check, as it is often one of the only factors inspected before the pump is changed. The oil level should be three inches above the pump suction. Otherwise, a vortex can form in the reservoir, allowing air into the pump.

What does the pump sound like when it is operating normally? Vane pumps generally are quieter than piston and gear pumps. If the pump has a high-pitched whining sound, it most likely is cavitating. If it has a knocking sound, like marbles rattling around, then aeration is the likely cause.

Cavitation is the formation and collapse of air cavities in the liquid. When the pump cannot get the total volume of oil it needs, cavitation occurs. Hydraulic oil contains approximately nine percent dissolved air. When the pump does not receive adequate oil volume at its suction port, high vacuum pressure occurs.

This dissolved air is pulled out of the oil on the suction side and then collapses or implodes on the pressure side. The implosions produce a very steady, high-pitched sound. As the air bubbles collapse, the inside of the pump is damaged.

While cavitation is a devastating development, with proper preventative maintenance practices and a quality monitoring system, early detection and deterrence remain attainable goals. UE System’s UltraTrak 850S CD pump cavitation sensor is a Smart Analog Sensor designed and optimized to detect cavitation on pumps earlier by measuring the ultrasound produced as cavitation starts to develop early-onset bubbles in the pump. By continuously monitoring the impact caused by cavitation, the system provides a simple, single value to trend and alert when cavitation is occurring.

The oil viscosity is too high. Low oil temperature increases the oil viscosity, making it harder for the oil to reach the pump. Most hydraulic systems should not be started with the oil any colder than 40°F and should not be put under load until the oil is at least 70°F.

Many reservoirs do not have heaters, particularly in the South. Even when heaters are available, they are often disconnected. While the damage may not be immediate, if a pump is continually started up when the oil is too cold, the pump will fail prematurely.

The suction filter or strainer is contaminated. A strainer is typically 74 or 149 microns in size and is used to keep “large” particles out of the pump. The strainer may be located inside or outside the reservoir. Strainers located inside the reservoir are out of sight and out of mind. Many times, maintenance personnel are not even aware that there is a strainer in the reservoir.

The suction strainer should be removed from the line or reservoir and cleaned a minimum of once a year. Years ago, a plant sought out help to troubleshoot a system that had already had five pumps changed within a single week. Upon closer inspection, it was discovered that the breather cap was missing, allowing dirty air to flow directly into the reservoir.

A check of the hydraulic schematic showed a strainer in the suction line inside the tank. When the strainer was removed, a shop rag was found wrapped around the screen mesh. Apparently, someone had used the rag to plug the breather cap opening, and it had then fallen into the tank. Contamination can come from a variety of different sources, so it pays to be vigilant and responsible with our practices and reliability measures.

The electric motor is driving the hydraulic pump at a speed that is higher than the pump’s rating. All pumps have a recommended maximum drive speed. If the speed is too high, a higher volume of oil will be needed at the suction port.

Due to the size of the suction port, adequate oil cannot fill the suction cavity in the pump, resulting in cavitation. Although this rarely happens, some pumps are rated at a maximum drive speed of 1,200 revolutions per minute (RPM), while others have a maximum speed of 3,600 RPM. The drive speed should be checked any time a pump is replaced with a different brand or model.

Every one of these devastating causes of cavitation threatens to cause major, irreversible damage to your equipment. Therefore, it’s not only critical to have proper, proactive practices in place, but also a monitoring system that can continuously protect your valuable assets, such as UE System’s UltraTrak 850S CD pump cavitation senor. These sensors regularly monitor the health of your pumps and alert you immediately if cavitation symptoms are present, allowing you to take corrective action before it’s too late.

Aeration is sometimes known as pseudo cavitation because air is entering the pump suction cavity. However, the causes of aeration are entirely different than that of cavitation. While cavitation pulls air out of the oil, aeration is the result of outside air entering the pump’s suction line.

Several factors can cause aeration, including an air leak in the suction line. This could be in the form of a loose connection, a cracked line, or an improper fitting seal. One method of finding the leak is to squirt oil around the suction line fittings. The fluid will be momentarily drawn into the suction line, and the knocking sound inside the pump will stop for a short period of time once the airflow path is found.

A bad shaft seal can also cause aeration if the system is supplied by one or more fixed displacement pumps. Oil that bypasses inside a fixed displacement pump is ported back to the suction port. If the shaft seal is worn or damaged, air can flow through the seal and into the pump’s suction cavity.

As mentioned previously, if the oil level is too low, oil can enter the suction line and flow into the pump. Therefore, always check the oil level with all cylinders in the retracted position.

If a new pump is installed and pressure will not build, the shaft may be rotating in the wrong direction. Some gear pumps can be rotated in either direction, but most have an arrow on the housing indicating the direction of rotation, as depicted in Figure 2.

Pump rotation should always be viewed from the shaft end. If the pump is rotated in the wrong direction, adequate fluid will not fill the suction port due to the pump’s internal design.

A fixed displacement pump delivers a constant volume of oil for a given shaft speed. A relief valve must be included downstream of the pump to limit the maximum pressure in the system.

After the visual and sound checks are made, the next step is to determine whether you have a volume or pressure problem. If the pressure will not build to the desired level, isolate the pump and relief valve from the system. This can be done by closing a valve, plugging the line downstream, or blocking the relief valve. If the pressure builds when this is done, there is a component downstream of the isolation point that is bypassing. If the pressure does not build up, the pump or relief valve is bad.

If the system is operating at a slower speed, a volume problem exists. Pumps wear over time, which results in less oil being delivered. While a flow meter can be installed in the pump’s outlet line, this is not always practical, as the proper fittings and adapters may not be available. To determine if the pump is badly worn and bypassing, first check the current to the electric motor. If possible, this test should be made when the pump is new to establish a reference. Electric motor horsepower is relative to the hydraulic horsepower required by the system.

For example, if a 50-GPM pump is used and the maximum pressure is 1,500 psi, a 50-hp motor will be required. If the pump is delivering less oil than when it was new, the current to drive the pump will drop. A 230-volt, 50-hp motor has an average full load rating of 130 amps. If the amperage is considerably lower, the pump is most likely bypassing and should be changed.

Figure 4.To isolate a fixed displacement pump and relief valve from the system, close a valve or plug the line downstream (left). If pressure builds, a component downstream of the isolation point is bypassing (right).

The most common type of variable displacement pump is the pressure-compensating design. The compensator setting limits the maximum pressure at the pump’s outlet port. The pump should be isolated as described for the fixed displacement pump.

If pressure does not build up, the relief valve or pump compensator may be bad. Prior to checking either component, perform the necessary lockout procedures and verify that the pressure at the outlet port is zero psi. The relief valve and compensator can then be taken apart and checked for contamination, wear, and broken springs.

Install a flow meter in the case drain line and check the flow rate. Most variable displacement pumps bypass one to three percent of the maximum pump volume through the case drain line. If the flow rate reaches 10 percent, the pump should be changed. Permanently installing a flow meter in the case drain line is an excellent reliability and troubleshooting tool.

Ensure the compensator is 200 psi above the maximum load pressure. If set too low, the compensator spool will shift and start reducing the pump volume when the system is calling for maximum volume.

Performing these recommended tests should help you make good decisions about the condition of your pumps or the cause of pump failures. If you change a pump, have a reason for changing it. Don’t just do it because you have a spare one in stock.

Conduct a reliability assessment on each of your hydraulic systems so when an issue occurs, you will have current pressure and temperature readings to consult.

Al Smiley is the president of GPM Hydraulic Consulting Inc., located in Monroe, Georgia. Since 1994, GPM has provided hydraulic training, consulting and reliability assessments to companies in t...