Skip to main content

Posts

Understanding variable displacement pumps

Almost all hydraulic applications use hydraulic pumps. The pump performs the task of converting mechanical energy into hydraulic energy. Take reservoir fluid and transfer it to other system components through pipes. From simple hand pumps to complex piston and gear pumps, you can find many classifications of hydraulic pump . A manual pump requires mechanical force to start the process, while complex pumps use electric motors to actuate hydraulic pumps. Forestry equipment, mining machinery, excavators, dump trucks, cranes, fireworks, loaders, etc. They use hydraulic pump applications. Positive displacement and non-positive displacement are the two main classifications of hydraulic pumps. Non-positive hydraulic pumps produce a continuous flow and a positive displacement pump produces a constant flow approximate to a constant speed regardless of pressure changes. Here, we will discuss a specific positive displacement pump called variable displacement pump. A variable displacement pump...
Post a Comment
Read more
Recent posts

Engines 101: Hydraulics in Action

  Hydraulics at Work This article, Motors 101, continues HPS's series of articles focusing on the "basics" of the major categories of hydraulic parts. If you are in the hydraulic power sales or service business and need a reputable hydraulic motor, pump or valve repair provider, HPS is ready to help. Among the many types of liquid energy products available, actuators are defined as "actuators that release energy to do the physical work of hydraulic systems." While the hydraulic pumps move the power and the hydraulic valves control the energy of the fluid, the hydraulic motors do the work, along with the pumps, converting the energy of the fluid into energy. Motors work by converting fluid pressure into motion. The pressure from the pump turns the output shaft of the motor by applying pressure to the gears, pistons or rotors of the hydraulic motor. Selecting a Hydraulic Motor The design of the complete hydraulic system will change depending on the type of mo...
Post a Comment
Read more

Eaton hydraulic pump

  The hydraulic parts exporter specializes in four product lines: Vickers, Denison, Rexroth A10VSO series, servo valves, and proportional valves.   HPS is proud to offer Vickers products, which offer an incredibly diverse range of applications and long-lasting quality. Known for its vibrant blue color, Vickers Hydraulics is one of the oldest known names in hydraulic power.   With over two million hydraulic parts on the shelf, HPS has the largest inventory availability of obsolete, discontinued, durable and hard-to-find Vickers products.   What is Vickers? Or rather... Who is Vickers? Vickers hydraulics are named after the man considered the "father of industrial hydraulics", Harry Franklin Vickers (1898 - 1977), an American industrialist and inventor from California.   Returning from his time serving in the US Army Signal Corps during World War I, he founded the company that became the brand: Vickers Manufacturing Company.   The compan...
Post a Comment
Read more

The Effects of Summer Heat on a Hydraulic Fluid

As the summer heat rises in large facilities, businesses using fluid power systems must take steps to ensure their fluid power equipment is equipped to handle the high temperatures.   While cold weather is responsible for some liquid power system failures, hot weather has its own drawbacks.   By understanding how heat affects your fluid power system and preparing your fluid power systems for the summer season, you reduce risks to your hydraulic equipment that can lead to costly downtime and increased maintenance demands. In this article, you will find preparation information and tips to help you understand and mitigate the effects of heat on Rexroth valve hydraulic fluid . It is important to understand viscosity. Be sure to read and understand the viscosity chart for your oil to understand how oil viscosity changes at different operating temperatures.   The viscosity of petroleum-based hydraulic oil decreases with increasing temperature. This reduces its a...
Post a Comment
Read more

Avoiding Devastating Cavitation Damage With the help of Rexroth proportional valve

  Hydraulic pump cavitation is a destructive problem. It is the likely cause of symptoms such as excessive noise and power usage, pump damage, and pump failure. Although each of these symptoms can indicate other concerns, cavitation is one of the most problematic, as it can compromise your entire hydraulic system. It is the second leading cause of hydraulic pump failure behind hydraulic fluid contamination. For this reason, let's look at some causes of cavitation, how to recognize that it is occurring, as well as how to prevent damage and maintain the health of hydraulic systems. What is cavitation and what causes it? Cavitation occurs from the formation and resulting collapse of vapors within a hydraulic pump. Excessive vacuum conditions on the inlet (supply) side of a pump create vapor bubbles within the hydraulic fluid which then move to the discharge (pressure) side, at which point they collapse. The moment of collapse is when the cavitation damage occurs. Cavitation is especia...
Post a Comment
Read more