terex hydraulic pump free sample

There is also hydraulic piston pump operated as hydraulic pump, which is a by-product of the different type. Terex piston pumps are cheaper and easier to operate compared with other hydraulic pumps. These hydraulic piston pumps are cheaper and require less pressure to operate.

They can also be used as a holding piston, such as the mini piston pump, which is used for holding the piston. However, the terex piston pumps have more pressure and than the other types of piston pumps, such as the mini piston pump, which is used for low-pressure piston pumps, and piston pumps are cheaper and easier to maintain. There are no hydraulic piston pumps, such as the electric piston pump, which is used for low-pressure piping.

There are also terephthal tubes and piston pumps, in addition to the two basic types, the terephthal tubes and the piston pump are consisting of a set of terex pumps, such as terex piston pumps, and terephthal tubes with piston pumps. In addition, the terexthal tubes are piston pumps, in addition to the two types of terephthal tubes and the piston pump.

The invention relates to a hydraulic circuit for a hydraulic excavator having a motor drive which acts on at least two closed drive circuits which are connected in parallel, each have a hydraulic pump and a hydraulic motor and which operate on a common output drive, connecting lines being provided between the hydraulic pump and the hydraulic motor of a respective drive circuit.

The invention further relates to a hydraulic circuit for a hydraulic excavator having at least two motor drives, each of which acts on at least two closed drive circuits which are connected in parallel and each have a hydraulic pump and a hydraulic motor, in each case two drive circuits forming a drive circuit group and all the drive circuit groups being connected in parallel and operating on a common output drive, connecting lines being provided between the hydraulic pumps and hydraulic motors of a drive circuit group.

Hydraulic circuits of this type are used, for example, in hydraulic excavators which have a rotatable upper chassis which is arranged on a slewing ring and is driven by a hydrostatic drive. The hydrostatic drive has a hydraulic pump which is arranged on a motor drive (diesel or electric motor), as well as a hydraulic motor which engages in the slewing ring either directly or via a reduction gear mechanism and thus effects the rotation of the upper chassis.

Small machines are normally provided with an open hydraulic circuit, which effects the change of direction via a control slide. In contrast, larger machines have a closed hydrostatic drive circuit, in which the direction of rotation and the speed of rotation are controlled by adjusting the pump pitch angle. In many cases, two or more closed hydrostatic drive circuits are provided for design reasons, these circuits engaging jointly with their output drive shaft in the slewing ring, that is to say operating on a common output drive.

In the case of machines having at least two motor drives, each motor drive may have at least two hydrostatic drive circuits, for example in the case of large excavators. Machines of this type normally have the drive circuits connected in such a way that it is possible to operate with different rotational speeds of the motor drives or with only one motor drive, while the other is switched off, for whatever reasons. The hydrostatic drive circuits of known hydraulic circuits of this type are at present connected to one another using lines in order to produce balancing of the pressure, and hence the loading, between the drive circuits. Furthermore, common flushing and feed systems are provided, as well as common drive valves for the pump control system.

This type of hydraulic circuit has the disadvantage that, in the event of damage to a single hydrostatic component in one drive circuit, all the drive circuits which are connected to one another via connecting lines are infected with particles, so that a large number of hydrostatic components can be damaged as a consequence.

It is therefore already known to provide filter arrangements in the respective hydrostatic drive circuit, these being connected into the respective return to the pump via a non-return valve combination, with the objective of filtering out the particles. However, this filter arrangement is complicated, since it is necessary for each drive circuit and does not provide absolute security, since there are still many connections between the drive circuits, such as those for flushing, feed and control.

The object of the invention is to improve hydraulic circuits of the generic type and having one or more motor drives in such a way that mutual contamination of the components of different drive circuits or drive circuit groups with particles in the event of damage is largely avoided, and also ascertaining the damage is simplified.

This object is achieved, in a hydraulic circuit having one motor drive, by the features of patent claim 1 and, in a hydraulic circuit having at least two motor drives, by the features of patent claim 2.

In order further to limit the effects of damage in a hydraulic circuit having at least two motor drives and, accordingly, at least two drive circuit groups, provision is advantageously made for filters to be arranged in each case in the connecting lines between the drive circuits of a drive circuit group. Thus, if damage occurs in a hydrostatic component of a drive circuit of a drive circuit group, these additional filters make it largely possible to avoid this damage being propagated from the affected drive circuit into a different drive circuit of the same drive circuit group.

FIG. 1 illustrates, as an example, a hydraulic circuit for a hydraulic excavator for driving the slewing ring of the upper chassis of this hydraulic excavator. This slewing ring of the upper chassis is denoted by the reference symbol D and thus forms the output drive from the hydraulic circuit. The hydraulic circuit itself has a motor drive M; in this case this may be a diesel or electric motor, for example.

The drive circuit A1 has a pump P1 which is acted on by the motor drive M and is connected via connecting lines L11 and L12 to a hydraulic motor HM1 having a brake B1. On the output side, this hydraulic motor HM1 engages via a reduction gearbox U1 in the slewing ring D of the hydraulic excavator.

The second drive circuit A2, connected in parallel, is built up in the same way. It has a hydraulic pump P2, which is acted on by the motor drive M. This hydraulic pump P2 is connected via connecting lines L21 and L22 to a hydraulic motor HM2, which is likewise equipped with a brake B2. On the output drive side, this hydraulic motor HM2 engages via a reduction gearbox U2 in the slewing ring D of the hydraulic excavator.

As can be seen, the two closed drive circuits A1 and A2 are completely isolated from each other. If damage then occurs in a hydrostatic component of one drive circuit, the possibility is then ruled out that particles released by this damage could pass into the other drive circuit and could also damage components there. Since the drive circuit which is not affected by the damage is thus not impaired, the serviceability of the hydraulic excavator is maintained, naturally within limits.

FIG. 2 illustrates a hydraulic circuit for a hydraulic excavator having two motor drives M1 and M2. This hydraulic circuit has two drive circuit groups AKG1 and AKG2, which are connected in parallel and each of which operates on a common output drive, namely on the slewing ring D of the upper chassis of a hydraulic excavator. In this case, the first drive circuit group AKG1 comprises a drive circuit A11 and a drive circuit A12 connected in parallel, while the drive circuit group AKG2 comprises a drive circuit A21 and a drive circuit A22 connected in parallel.

As in the exemplary embodiment according to FIG. 1, each drive circuit has in each case a hydraulic pump which is driven by a motor, and a hydraulic motor with a brake, the respective hydraulic motor operating via a reduction gearbox on the common slewing ring D. These above-mentioned hydraulic components are in this case designated in the following way in the drawing:

The drive circuit A11 has a hydraulic pump P11 and a hydraulic motor HM11 with a brake B11 and reduction gearbox U11. In this case, the hydraulic motor HM11 and the pump P11 are connected to each other via connecting lines L111 and L112, and the pump P11 is driven by the motor drive M1.

The drive circuit A12 of the first drive circuit group AKG1 has a hydraulic pump P12 and a hydraulic motor HM12 with a brake B12 and a reduction gearbox U12 on the output drive side. In this case, the hydraulic motor HM12 and the hydraulic pump P12 are connected to each other via connecting lines L121 and L122, and the pump P12 has a drive connection to the motor drive M2.

The drive circuit A21 of the second drive circuit group AKG2 has a hydraulic pump P21, a hydraulic motor AM21 with a brake B21 and a reduction gearbox U21. The hydraulic motor HM21 and the hydraulic pump P21 are connected to each other via connecting lines L211 and L212, and the hydraulic pump P21 is driven by the motor drive M1.

The drive circuit A22 of the second drive circuit group AKG2 has a hydraulic pump P22 and a hydraulic motor HM22 with a brake P22, as well as a reduction gearbox U22. The pump P22 and the hydraulic motor HM22 are connected to each other via connecting lines L221 and L222, and the hydraulic pump P22 is driven by the motor drive M2.

The hydraulic pumps of each drive circuit group each has its own control valve, the control valve of the drive circuit group AKG1 being designated by S1 and the control valve of the drive circuit group AKG2 being designated by S2. Both control valves S1 and S2 can be operated via a manual control lever H. Each control valve S1 and S2 is respectively connected via control lines only to its own drive circuit group, the control valve S1 to the drive circuit group AKG1, namely via control lines SL11 and SL12, and the control valve S2 to the drive circuit group AKG2 via control lines SL21 and SL22.

It can be seen from the hydraulic circuit described above that the connecting lines of each drive circuit group are arranged only between the hydraulic pumps and the hydraulic motors of the respective drive circuit group, but there is no hydraulic connection of any type between the different drive circuit groups AKG1 and AKG2. In addition, as described above, each respective drive control group has its own control valve connected to it. There is thus complete isolation between the two drive circuit groups, so that in the event of damage in one drive circuit group, particles which are released as a result of the damage cannot get into the hydraulic components of the other drive circuit group. Furthermore, as a result of filters having been provided in the balancing lines between the drive circuits of a respective drive circuit group, it is also largely reliably ensured that particles released in one drive circuit cannot get into the hydraulic components of the other drive circuit of the same drive circuit group.

Finally, the cross-coupling according to the invention of the motor drives M1 and M2 in each case to only one drive circuit of a respective drive circuit group ensures that the hydraulic drive still operates, within certain limits, even when one motor drive fails.

The invention is of course not restricted to the exemplary embodiments illustrated. Further refinements are possible without leaving the basic idea. Thus, the exemplary embodiment according to FIG. 2 can be transferred in a similar way to a hydraulic circuit which has more than two motor drives.

ASV/Terex make exceptional machines. However, like all mechanical things they do need repairs and maintenance from time to time. And even though Hydraulics can be intimidating there are many out there who do these repairs themselves. Need parts? Our ASV/Terex listings consist of Shafts and Relief Valves to Replacement Tandem Drive Pumps & Single and Double Gear Pumps. We’re your source. Plus, if you don’t see it listed or have questions be sure to give one of our friendly, knowledgeable Customer Service Representatives a call. We’re here to find a solution your parts issues as quickly, easily and efficiently as possible. Not to mention we actually enjoy what we do! Don’t waste any more of your valuable time, contact us!

Brand new final drive directly from South Korean manufacturer by North American representative office. Price includes delivery within Canada and the continental USA Complete and fully assembled brand new hydraulic motor and new heavy-duty planetary gearbox, filled with oil, ready to bolt on and go Quality, built in our own factory in South Korea.

We offer the best performing drives for the major OEM brand machines and high-speed! 2-speed capability, works on either side of your machine and has the same location and size of hydraulic ports as your original for ease of making hose connections. If there is any difference in port location, we supply free hoses together with your final drive to make the conversion easy.

Hydraulic contamination is a major source of problems for any type of hydraulic system, but especially for hydraulic motors and final drives -- which means that it is very important to be well informed on the subject. In this Shop Talk Blog post, we are going to talk about the types and sources of contamination, as well as how to avoid contamination. This information is important for all types of hydraulic construction equipment, from a

There are best way to deal with the effects of chemical breakdown and reactions is to drain the hydraulic fluid and replace with fresh, filtered fluid.

Many people do not realize that hydraulic fluid arrives contaminated. Manufacturers do not always have complete control of how the fluid is stored and shipped, so for optimum machine performance experts recommend that hydraulic fluid be filtered before it is added to the system. In addition, different types of hydraulic fluid Reactions can occur between the additives that can seriously compromise the performance of the hydraulic fluid and damage your system.

Contamination can be introduced when hydraulic equipment is being serviced, especially if it is serviced in the field. The exterior of the equipment should always be cleaned before it is serviced (you"ll notice what thoroughly

When it comes to preventing damage to your final drive from hydraulic contamination, the key is to check and change the case drain filter. Most hydraulic motors have a

The key to keeping your hydraulic equipment free of contaminant damage is to filter the hydraulic fluid before it goes into the system, drain and replace the hydraulic fluid regularly, check and change the filters and breathers, and only open up the hydraulic system in a clean environment.

Are you in need of reasonably priced hydraulic pumps suitable for Terex backhoe loaders? Whether you manage a few Terex backhoe loaders or an entire fleet of Terex backhoe loaders, our aftermarket hydraulic pumps allow you to keep costs low and keep your Terex backhoe loaders operating at peak productivity.

Sign up for a free accounttoday to browse our online shop. Once your company is approved, you will get access to our full range of  hydraulic pumps suitable for Terex backhoe loaders. Already have an account? Log in now!

Terex backhoe loaders are designed to last, but hydraulic pumps are susceptible to wear and tear. High-quality Terex backhoe loader running and your employees safe. Looking for a reliable partner?TVH can supply quality hydraulic pumps suitable for any Terex backhoe loader model.

Each month, 24500 new part numbers are added. You will never have to search for "Terex backhoe loader parts near me" ever again. In addition to hydraulic pumps, you will find a wide variety of other replacement parts suitable for Terex backhoe loaders, including:

Our quality control department makes sure we only include quality parts and accessories suitable for Terex backhoe loaders in our product range. We have strict standards:

Yes. Our electronics department in Belgium is Europe’s largest, best equipped and most diverse service centre (surface of 3500 m²) for the repair of electronic parts for Terex backhoe loaders. There, our engineers work in an ESD-safe zone or EPA (electrostatic protected area). Each of our engineers is specialized in a specific brand so that we can guarantee optimal quality, as a result of optimal knowledge. Learn more about the

When your Terex backhoe loader breaks down, the last thing you need are complicated processes and delayed shipments. That’s why we’ve made getting new hydraulic pumps from TVH easier than ever for you.

Save research time and reduce search errors by registering your Terex backhoe loaders in our online shop. You can personalise your equipment by adding your own reference, images, documents and notes.

Theory:Rotary Pump Structure:Gear Pump Usage:Oil Power:Hydraulic Standard or Nonstandard:Standard Fuel:Diesel Pressure:High Pressure Certification:ATSM,ISO9001;2008 P N:terex hydraulic pump and motor MOQ:1 piece Quality test report:Available power:hydraulic model truck:heavy Show More...

Theory:Rotary Pump Structure:Gear Pump Usage:Oil Power:Hydraulic Standard or Nonstandard:Standard Fuel:Diesel Pressure:High Pressure Certification:ATSM,ISO9001;2008 P N:terex hydraulic pump and motor MOQ:1 piece Quality test report:Available power:hydraulic model truck:heavy dump truck oem:ok sample order:accept condition:new&standard terex hydraulic pump and motor price name:terex hydraulic pump and motor price Purchaser: N/A