princess auto hydraulic pump made in china

In this article I would like to throw in my modest opinion about non-original spare parts - a frequent discussion topic among folks involved in the business of hydraulic pump and motor overhauling.

Although workshops can"t repair pumps without spare parts, they can choose where to buy the spares, and this choice is the key factor that defines how much money they make and how much "overhauling quality" they deliver. With so many suppliers and resellers of non-genuine replacement parts for hydraulic pumps and motors popping up every day, choosing the right "economic" supplier has become all but an easy task involving trial and error overhauls, pissed-off mechanics, pissed-off customers and even forever lost contracts and clients.

A mechanic, for example, being the person who shoves the parts into them pumps and motors, will always prefer genuine replacement parts over any aftermarket ones for one simple reason - they are easy to work with, they always fit and require no "finishing touches" - ergo his work is faster and simpler. Genuine parts last long and are hardly ever faulty, which makes the testing and adjustment procedures safer and reduces the risk of having to re-open overhauled units to a minimum. A mechanic doesn"t care about how much they cost because he"s not the one paying for them.

The truth lies, as always, in the golden middle, and I, personally, came to the conclusion that although most of the times you do get what you pay for, this doesn"t mean that you can"t get a bargain for a penny every once in a while, so a sound overhauler keeps his eyes and mind open and uses both genuine and aftermarket parts in a combination defined by his trial an error experience and the pump/motor application demands. This approach is sound because even in pre-recession years there were hydraulic equipment owners who actually preferred aftermarket to genuine in the pursuit of cutting down overhaul expenses. So, some clients will want the genuine quality, and some will want the lower price - and in order to satisfy both you, naturally, have to be able to serve both, but - if your goal is to deliver quality repairs, aftermarket part suppliers should be chosen with a cool head and on the basis of quality, not price!

OK, you say, so I am a hydraulic equipment owner, and I"ve got this excavator pump to repair, how do I know if I am going to be scammed with them Chinese spares? Well, there is no simple answer to this question...There is an opinion that if an overhaul is backed up by warranty than you"re on the safe side, no matter what parts were used - this, unfortunately, is not entirely true, because if you"re the unlucky hydraulic pump owner caught in the "error" stage of the new supplier trial and error validation process, you can get two different answers and two very different bills depending on how honest the company you are dealing with is. An honest workshop will admit their fault and try to correct the mistake as fast as they can, and if you are not the first-time customer you might even get the - "sorry about that, dude, the parts"re all **cked up..." confession, while a less candid workshop will give you the standard "commission errors committed by non-qualified personnel plus hard particle contamination in conjunction with the inappropriate oil temperature and deficient system design" excuse, and make you pay for their poor part supplier choice. So I"d say that warranty alone isn"t a guarantee, and would cast my vote for warranty combined with transparency - if a workshop has good experience with their non-genuine spare parts supplier - they won"t be ashamed to admit that the parts are not original.

Now, a separate word must be said about Chinese suppliers of spare parts for hydraulic pumps and motors. There are hundreds of companies in China that will sell you spare parts for almost any existing brand, with the quality ranging from superb to unacceptable and even ridiculously unacceptable. However with most suppliers (and especially resellers) the fact that you have received a batch of supreme quality spares doesn"t guarantee that you will get the same quality in the next batch. So if you ever decide to "go oriental" - be prepared for nasty surprises! (At least that was the situation at the moment of writing - December 2011).

My calling is more technical than commercial, therefore I am mainly interested in the quality of the spares rather than their price or where they come from - so please, don"t bother asking me for a list of "unofficially approved" Chinese suppliers of cheap yet extremely high quality spare parts for hydraulic pumps and motors - I won"t provide it because I frankly don"t have it! We do use some aftermarket spares from China, we did have our share of mishaps and disappointments with Chinese made parts, and our initial "Hurrays" got eventually replaced by "Boos" for most of them. Since our policy has always been to never let a client pay for a breakdown caused by a low quality part, a couple of lessons "learned the hard way" taught us that in most cases (not all, though) using Chinese spares in hydraulic pumps and motors is like using bathroom soap for filling cakes - looks and smells nice, yet still tastes like crap...

Great question Cory. I just checked out those ones that Blaze just mentioned. I have a early Princess Auto(Canadian Harbor Freight) one from the late 90"s. Yes made in China but was built dam nice. Has the out riggers on the back and front legs for greater stability. It still works great and no oil leaks on the ram what so ever. But now I never seem to see the out riggers on any of the ones you see these days. And lighter gauge steel in them.

The historical region now known as China experienced a history involving mechanics, hydraulics and mathematics applied to horology, metallurgy, astronomy, agriculture, engineering, music theory, craftsmanship, naval architecture and warfare. Use of the plow during the Neolithic period Longshan culture (c. 3000–c. 2000 BC) allowed for high agricultural production yields and rise of Chinese civilization during the Shang Dynasty (c. 1600–c. 1050 BC).multiple-tube seed drill and the heavy moldboard iron plow enabled China to sustain a much larger population through improvements in agricultural output.

By the Warring States period (403–221 BC), inhabitants of China had advanced metallurgic technology, including the blast furnace and cupola furnace, while the finery forge and puddling process were known by the Han Dynasty (202 BC–AD 220). A sophisticated economic system in imperial China gave birth to inventions such as paper money during the Song Dynasty (960–1279). The invention of gunpowder in the mid 9th century during the Tang dynasty led to an array of inventions such as the fire lance, land mine, naval mine, hand cannon, exploding cannonballs, multistage rocket and rocket bombs with aerodynamic wings and explosive payloads. Differential gears (first used in the Greek Antikythera mechanism)south-pointing chariot for terrestrial navigation by the 3rd century during the Three Kingdoms. With the navigational aid of the 11th century compass and ability to steer at sea with the 1st century sternpost rudder, premodern Chinese sailors sailed as far as East Africa.escapement mechanism since the 8th century and the endless power-transmitting chain drive in the 11th century. They also made large mechanical puppet theaters driven by waterwheels and carriage wheels and wine-serving automatons driven by paddle wheel boats.

For the purposes of this list, inventions are regarded as technological firsts developed in China, and as such does not include foreign technologies which the Chinese acquired through contact, such as the windmill from the Middle East or the telescope from early modern Europe. It also does not include technologies developed elsewhere and later invented separately by the Chinese, such as the odometer, water wheel, and chain pump. Scientific, mathematical or natural discoveries made by the Chinese, changes in minor concepts of design or style and artistic innovations do not appear on the list.

Philon of Byzantium (3rd or 2nd century BC)chain drive and windlass used in the operation of a polybolos (a repeating ballista),chain pumps which had been known in China since at least the Han Dynasty (202 BC – 220 AD) when they were mentioned by the Han dynasty philosopher Wang Chong (27 – c. 100 AD),clock tower built at Kaifeng in 1090 by the Song Chinese politician, mathematician and astronomer Su Song (1020–1101).

Escapement, hydraulic-powered (use in clock tower): The escapement mechanism was first described for a mechanical washstand by the Greek Philon of Byzantium who also indicated that it was already used for clocks.Yi Xing (683–727) of the Tang Dynasty (618–907) for his water-powered celestial globe in the tradition of the Han dynasty polymath and inventor Zhang Heng (78–139), and could be found in later Chinese clockworks such as the clock towers developed by the military engineer Zhang Sixun (fl. late 10th century) and polymath inventor Su Song (1020–1101).striking clock.pendulum resting and releasing its hooks on a small rotating gear wheel, the early Chinese escapement employed the use of gravity and hydraulics.waterwheel (which acted like a gear wheel) would be filled one by one with siphoned water from a clepsydra tank.

Collection of Miscellanea at Duyang, written by Su E (fl. 880), described the Wei clan (family of Princess Tongchang"s husband) of the Tang Dynasty (618–907 AD) enjoying the "leaf game" in 868.Yezi Gexi was a book on the card came which was allegedly written by a Tang woman and commented on by Chinese scholars in subsequent dynasties.Notes After Retirement, the Song Dynasty (960–1279) scholar Ouyang Xiu (1007–1072) asserted that playing card games existed since the mid Tang Dynasty and associated this invention with the simultaneous evolution of the common Chinese writing medium from paper rolls to sheets of paper that could be printed.novels such as the woodblock printing before the innovation of the early modern printing press by German inventor, printer, publisher and blacksmith Johannes Gutenberg (c. 1400–1468).

Jiao Yu shows the oldest known multistage rocket with rocket boosters. The Huolongjing describes and illustrates the oldest known multistage rocket.booster rockets that would automatically ignite a number of smaller rocket arrows that were shot out of the front end of the missile, which was shaped like a dragon"s head with an open mouth, before eventually burning out.YingJi-62 ASCM.Joseph Needham points out that the written material and depicted illustration of this rocket come from the oldest stratum of the Huolongjing, which can be dated roughly from 1300–1350 AD.fire arrows invented during the medieval Song dynasty more than 1000 years ago, using gunpowder as solid rocket propellants. Gunpowder was packed into a bamboo case cylinder and an opening was created on the cylinders other end. As the gunpowder was ignited, it began to burn rapidly and created large amounts of gas that would rush out to create thrust.

air conditioning, the Han Dynasty craftsman and mechanical engineer Ding Huan (fl. 180 AD) invented a manually operated rotary fan with seven wheels that measured 3 m (10 ft) in diameter; in the 8th century, during the Tang Dynasty (618–907), the Chinese applied hydraulic power to rotate the fan wheels for air conditioning, while the rotary fan became even more common during the Song Dynasty (960–1279).Georg Agricola (1494–1555).

archaeological site in Anatolia (Kaman-Kalehoyuk) and is about 4,000 years old.East Africa, dating back to 1400 BC.Falcata were produced in the Iberian Peninsula, while Noric steel was used by the Roman military.cast iron from the late Spring and Autumn period (722–481 BC), produced steel by the 2nd century BC through a process of decarburization, i.e. using bellows to pump large amounts of oxygen on to molten cast iron.Liu An (179–122 BC). For steel, they used both quenching (i.e. rapid cooling) and tempering (i.e. slow cooling) methods of heat treatment. Much later, the American inventor William Kelly (1811–1888) brought four Chinese metallurgists to Eddyville, Kentucky in 1845, whose expertise in steelmaking influenced his ideas about air injection to reduce carbon content of iron; his invention anticipated the Bessemer process of English inventor Henry Bessemer (1813–1898).

pestle and mortar to pound and decorticate grain, which was superseded by the treadle-operated tilt hammer (employing a simple lever and fulcrum) perhaps during the Zhou Dynasty (1122–256 BC) but first described in a Han Dynasty (202 BC – 220 AD) dictionary of 40 BC and soon after by the Han dynasty philosopher and writer Yang Xiong (53 BC – 18 AD) in his hydraulic power, which the Han dynasty philosopher and writer Huan Tan (43 BC – 28 AD) mentioned in his Xinlun of 20 AD, although he also described trip hammers powered by the labor of horses, oxen, donkeys, and mules.waterwheels were made in subsequent Chinese dynasties and in Medieval Europe by the 12th century.Pliny, Roman Empire by the 1st century AD.

Stem cell educator therapy: Chinese and US researchers have produced remarkable results for this new treatment of obtaining stem cells from human cord blood to "re-educate" misbehaving immune cells. This result was published in the open-access journal BMC Medicine in January 2012, and offers hope for Type 1 diabetics and potentially may also be used to treat other auto-immune diseases if the approach lives up to early promise.

Lewis, Michael (2000b), "Theoretical Hydraulics, Automata, and Water Clocks", in Wikander, Örjan,Handbook of Ancient Water Technology, Technology and Change in History, 2, Leiden, pp. 343–369 (356f.), ISBN 90-04-11123-9.

Water-absorbing media is formulated with absorbents and resins to remove moisture and condensation from petroleumbased fluids. Water concentrations in hydraulic oil as low as .1% can accelerate component wear by as much as 50%.

You got it... the higher the pressure the cylinder is rated at normally the better it is and the more money they want, have run cylinders from PA ,tie rod type, screw cap ends (both black and reds) and have had good luck with them. You need to have the right cylinder for the job. It"s a waste of money buying a 3000psi cylinder to open the tailgate on a pump body yet it"s a problem buying a tierod cylinder to use as a lift cylinder on the pump body. Shop around though to see if the price at PA is a good one or not, i have bought identical cylinders at some hydraulic repair shops that were cheaper then at PA.

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1.To adopt balanced hydraulic for the structure of Intra-vane and ten –Vane design, higher pressure, top to 21 MPa.2.To adopt floating structure for side plate, it will do a compensation for end-face clearance by automatic, so that even the pump under high pressure it can maintain a high volumetric efficiency. 3.The side plate is made of dual-metal material, it improved ...

The SKS Hydraulic TECHNOLOGY Co., Ltd was established (as the Ningbo WIDESKY SKS Hydraulic CO., LTD.) is located inZhejiang ,China. SKS is an advanced National Torch Plan enterprise and ISO 9001:2008 certified. SKS specializes in manufacturing five major hydraulic product lines: piston pumps/motors/spare parts; swing and travel motors with gearbox reducers; gears and charge pumps for piston pumps; control valves; and precision castings.

Over more than10years of development, SKS has become an internationally reputed brand name in the field of hydraulics and a world-ranking manufacturer of a wide range of hydraulic products. SKS possesses its own independent innovative manufacturing system and technology. It has over 400 units of advanced automatic production machinery, including precision casting lines and bi-metal sintering furnaces. These advanced manufacturing facilities combined with rigorous quality control have contributed to SKS achieving a leading position within the domestic Chinese hydraulic industry.

SKS has its own high-level Hydraulic Research and Development Center. Having 20% of the total workforce made up of professional hydraulic experts, research workers, engineers and technicians helps to build a strong competent R&D team. SKS has collaborated with prominent Chinese universities on R&D and manufacturingprojects for piston pumps, motors, reduction gears and valves.

SKS’s business philosophy is to offer excellent quality, great variety and prompt service to satisfy its customers’ needs. The management has made market-orientation, quality and innovation its core values and aims to take the Chinese national hydraulic industry to new heights.