{"id":3506,"date":"2026-04-22T10:01:52","date_gmt":"2026-04-22T10:01:52","guid":{"rendered":"https:\/\/hydrauliccylindersmanufacturer.com\/product\/product-4\/"},"modified":"2026-04-22T10:07:27","modified_gmt":"2026-04-22T10:07:27","slug":"welded-through-hole-type-cylinders-wp-3000psi-compact-through-pin-hydraulic-actuation","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersmanufacturer.com\/it\/prodotto\/welded-through-hole-type-cylinders-wp-3000psi-compact-through-pin-hydraulic-actuation\/","title":{"rendered":"Cilindri saldati a foro passante WP-3000PSI: Attuazione idraulica compatta con perno passante"},"content":{"rendered":"
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Through-hole rod-end welded hydraulic cylinders engineered for tight-envelope mounting at a consistent 3000 PSI working pressure.<\/p>\n

WP3015XX – WP3040XX \u00a0|\u00a0 Bore 1.5″ to 4″ \u00a0|\u00a0 Stroke 4″ to 72″<\/span><\/p>\n<\/section>\n

\"EVER<\/div>\n

The welded through hole hydraulic cylinder WP-3000PSI targets equipment designers who do not have the packaging room for a clevis or cross-tube mount. Every welded through hole hydraulic cylinder in the WP-3000PSI series carries a through-pin rod eye and a cross-tube cap end, so the envelope footprint stays narrow while still delivering 3000 PSI working pressure. Bore sizes run from 1.5″ to 4″, stroke lengths from 4″ all the way to 72″, and the WP-3000PSI welded cylinder has been specified by trailer OEMs, dump body builders, and attachment fabricators who simply cannot fit a wider welded tee part.<\/p>\n

\"Welded<\/p>\n

What separates the EVER POWER welded through hole hydraulic cylinder from a generic import is the tightness of the hole-to-hole centerline on the rod end. We hold that critical dimension to \u00b11\/8″ across every WP-3000PSI welded cylinder off the Hangzhou production floor, so fleet buyers swapping worn units into legacy brackets do not end up re-drilling pin holes in the field. Over thirty export markets have validated that tolerance discipline by reordering the welded through hole hydraulic cylinder year after year.<\/p>\n

\ud83d\udcf9 Fai un tour virtuale a 360\u00b0 della nostra fabbrica di Hangzhou.<\/a><\/div>\n
Richiedi un preventivo \u2192<\/a><\/div>\n

Why Choose EVER POWER WP-3000PSI?<\/h2>\n

The appeal of a welded through hole hydraulic cylinder is straightforward \u2014 compact envelope, direct pin engagement, high-fatigue welded construction. What separates a well-built WP-3000PSI welded cylinder from the rest of the category shows up in the details. These six engineering decisions are why EVER POWER buyers keep the welded through hole hydraulic cylinder on their reorder list.<\/p>\n

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01 \u00b7 Direct Through-Pin Rod Eye<\/h4>\n

The rod end is drilled through for a single mounting pin, with a bronze bushing pressed into the hole. Pin sizes from 5\/8″ to 1-1\/4″ cover common OEM brackets and the welded through hole hydraulic cylinder slips directly into existing hardware.<\/p>\n<\/div>\n

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02 \u00b7 Compact Mounting Envelope<\/h4>\n

Outside diameter stays tight \u2014 only 1.875″ on the 1.5″ bore and 4.50″ on the 4″ bore. When bracket space is limited, the WP-3000PSI welded cylinder drops in where a wider clevis part cannot.<\/p>\n<\/div>\n

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03 \u00b7 Long Stroke Capability<\/h4>\n

Stroke options run up to 72″ on the 2″ bore. Few welded through hole hydraulic cylinder families in the market cover that range, and the WP-3000PSI extended-stroke parts still hold the stated column-load numbers.<\/p>\n<\/div>\n

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04 \u00b7 Verified 3000 PSI Rating<\/h4>\n

Every WP-3000PSI welded cylinder is pressure-tested by sampling or on customer request. Extended-stroke SKUs carry adjusted extended working pressure values documented on the datasheet.<\/p>\n<\/div>\n

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05 \u00b7 Bronze Pin Bushing<\/h4>\n

The rod eye carries a pressed bronze bushing as standard, which cushions pin wear in high-cycle service. Replacement bushings are stocked for field service.<\/p>\n<\/div>\n

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06 \u00b7 SAE Ports with NPT Option<\/h4>\n

Standard porting is SAE-6 or SAE-8 depending on bore. NPT ports are available on request for retrofit service where the original equipment used imperial thread fittings.<\/p>\n<\/div>\n<\/div>\n

\"welded<\/div>\n

Principio di funzionamento e costruzione<\/h2>\n

A welded through hole hydraulic cylinder operates on the same double-acting circuit shared across the welded family, but its distinguishing feature is the rod end \u2014 a single through-drilled pin eye with a bronze bushing, instead of a two-lug clevis yoke. That geometry cuts installation width by roughly 30% against a comparable welded clevis, which is precisely why the WP-3000PSI welded cylinder has displaced clevis parts on space-limited dump body builds and compact attachment machines.<\/p>\n

Material choices follow the same philosophy as the rest of the EVER POWER range. Barrels are cold-drawn seamless carbon steel tube, honed to mirror finish. Rods are induction-hardened and hard chromed to a minimum 0.03 mm plating thickness. End caps are welded with qualified welding procedure specifications on robotised stations. Seal stacks default to a Nitrile primary with a polyurethane buffer, giving every WP-3000PSI welded cylinder a reliable service temperature range of \u221230\u00b0C to +100\u00b0C. Viton seal options are available for hydraulic-fluid temperature excursions.<\/p>\n

Rod straightness on every welded through hole hydraulic cylinder is verified against a 0.2 mm\/m limit before assembly, and final rod-end hole concentricity to the rod centerline is held to \u00b10.1 mm. Those numbers matter more on a through-pin design than on a clevis because a cocked pin hole shows up immediately as binding. Each WP-3000PSI welded cylinder leaves Hangzhou with rod anti-corrosion plugs installed in both ports to protect the internals during ocean freight.<\/p>\n

Specifiche standard<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n
Numero di parte<\/th>\nForo<\/th>\nRod Dia.<\/th>\nDimensioni del perno<\/th>\nPorti<\/th>\nCarico della colonna (libbre)<\/th>\nPressione (PSI)<\/th>\n<\/tr>\n<\/thead>\n
WP3015XX<\/td>\n1.50″<\/td>\n1.00″<\/td>\n5\/8″<\/td>\nSAE 6<\/td>\n5,300<\/td>\n3000<\/td>\n<\/tr>\n
WP3020XX<\/td>\n2.00″<\/td>\n1.25″<\/td>\n3\/4″<\/td>\nSAE 8<\/td>\n9,400<\/td>\n3000<\/td>\n<\/tr>\n
WP3025XX<\/td>\n2.50″<\/td>\n1.37″<\/td>\n3\/4″<\/td>\nSAE 8<\/td>\n14,700<\/td>\n3000<\/td>\n<\/tr>\n
WP3030XX<\/td>\n3.00″<\/td>\n1.50″<\/td>\n1″<\/td>\nSAE 8<\/td>\n21,200<\/td>\n3000<\/td>\n<\/tr>\n
WP3035XX<\/td>\n3.50″<\/td>\n1.75″<\/td>\n1″<\/td>\nSAE 8<\/td>\n28,800<\/td>\n3000<\/td>\n<\/tr>\n
WP3040XX<\/td>\n4.00″<\/td>\n2.00″<\/td>\n1-1\/4″<\/td>\nSAE 8<\/td>\n37,700<\/td>\n3000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Retracted and stroke tolerance \u00b11\/8″. Column load calculated with safety factor of 2, pin-to-pin mounting. Extended working pressure de-rated on long-stroke SKUs \u2014 consult the datasheet. NPT ports available on request.<\/p>\n

\"welded<\/div>\n

Typical Applications of the WP-3000PSI<\/h2>\n

The welded through hole hydraulic cylinder earns its place on equipment where space is the primary constraint. The WP-3000PSI series has been specified on flatbed trailer tail-lifts built in California, on grain-trailer tipping rams operated across Australian wheat country, on scissor-lift platforms stamped out of Romanian workshops, and on refuse packer plates running pick-up routes in Italy. The welded through hole hydraulic cylinder handles each of those jobs because the envelope fits where a fatter cylinder will not, and the WP-3000PSI welded cylinder still delivers the full 3000 PSI working capability.<\/p>\n

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\ud83d\ude9b Dump Bodies<\/h4>\n

Dump trailer tipping rams, tri-axle dump truck lifters, and roll-off container cylinders where bracket width is limited.<\/p>\n<\/div>\n

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\ud83d\ude9c Agricultural Trailers<\/h4>\n

Grain trailer tipping cylinders, livestock trailer ramp rams, and manure-spreader gate actuators.<\/p>\n<\/div>\n

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\ud83c\udfd7\ufe0f Attachments<\/h4>\n

Skid-steer attachment arms, mini-loader bucket tilts, and telehandler side-shift frames.<\/p>\n<\/div>\n

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\u267b\ufe0f Refuse & Recycling<\/h4>\n

Refuse-packer blade rams, bin-lift arms, and compactor doors on collection trucks.<\/p>\n<\/div>\n

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\ud83c\udfed Industrial<\/h4>\n

Press return cylinders, fixture clamp rams, and machine-guard actuators in automated production cells.<\/p>\n<\/div>\n

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\ud83d\udeaa Tail Lifts<\/h4>\n

Column lift gates, cantilever tail lifts, and loading-bay dock levellers.<\/p>\n<\/div>\n<\/div>\n

\"welded<\/div>\n

Caso di studio del cliente<\/h2>\n
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Customer Success: How an Australian Grain Trailer Builder Shaved 30% off Pivot Width with the WP-3000PSI<\/h4>\n

Cliente:<\/strong> OutbackHaul Trailer Co. \u2014 grain trailer OEM based in Toowoomba, Queensland, Australia<\/p>\n

Progetto:<\/strong> Redesign a 20-ton grain tipper to fit a narrower chassis. The legacy welded clevis cylinder took 8″ of pivot width between brackets; the new chassis only allowed 5.5″ of bracket spacing.<\/p>\n

Soluzione:<\/strong> EVER POWER recommended the WP-3000PSI welded through hole hydraulic cylinder WP3040XX with a 30″ stroke and 1-1\/4″ pin size. The through-pin rod eye dropped the required bracket-to-bracket width to 4.8″, leaving margin for the new chassis geometry. Production ran from Hangzhou and shipped via Ningbo Port into Brisbane.<\/p>\n

Risultato:<\/strong> Six months after rollout, OutbackHaul recorded zero warranty returns on the new chassis and standardised two additional trailer SKUs on the welded through hole hydraulic cylinder platform. Annual volume has since grown from 180 to 540 units.<\/p>\n<\/div>\n

\"welded<\/div>\n

Cosa dicono i nostri clienti<\/h3>\n
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\u201cThe through-pin rod eye on the WP-3000PSI dropped right into our existing bracket holes without a single modification. Shaved three days off our production line qualification.\u201d<\/p>\n

\u2014 T. Mitchell<\/div>\n
Dump Body OEM Engineer, United States<\/div>\n<\/div>\n
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\u201cWe needed 60-inch strokes for our grain trailer range, and most China suppliers topped out at 48 inches. EVER POWER built the welded through hole hydraulic cylinder we asked for and held the price flat.\u201d<\/p>\n

\u2014 P. Thornbury<\/div>\n
Trailer Manufacturer, Australia<\/div>\n<\/div>\n
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\u201cBronze bushings in the rod eye are a premium touch. On a refuse-packer duty cycle that means lower pin wear and fewer rebuilds for us downstream.\u201d<\/p>\n

\u2014 F. Ricci<\/div>\n
Refuse-Truck Fleet Manager, Italy<\/div>\n<\/div>\n<\/div>\n

All'interno del nostro stabilimento di Hangzhou<\/h2>\n

EVER POWER Hydraulic Machinery operates an integrated production facility in Binjiang District of Hangzhou, Zhejiang Province, China. The plant covers hydraulic cylinder design, CNC machining, robotic welding, rod chroming, assembly, and full QC testing under one roof. Our Hangzhou engineering team has been designing the welded through hole hydraulic cylinder line since 2002, with current annual capacity of 120,000 cylinders across the full catalog including the WP-3000PSI platform.<\/p>\n

Our quality system is ISO 9001:2015 certified. Every welded through hole hydraulic cylinder that leaves the production floor has a traceable serial number linked to raw material certificates, weld records, pressure test data, and final dimensional inspection. We hold CE documentation for European export, and routinely supply buyers in the United States, Canada, Australia, Germany, France, Brazil, Mexico, and Southeast Asia. Third-party inspection by SGS, BV, TUV, or the buyer’s own engineer is welcome at any stage.<\/p>\n

Programma di qualit\u00e0 e collaudo<\/h3>\n

Every WP-3000PSI undergoes a multi-stage test program before leaving Hangzhou. Raw tubing is checked for OD\/ID dimensional tolerance and straightness on receipt. After honing, each barrel is measured for bore finish (target 0.4-0.8 \u03bcm Ra) and cylindricity. Chrome-plated rods are measured for plating thickness with an eddy current gauge and inspected for surface pits under 10x magnification. The final assembled welded through hole hydraulic cylinder is pneumatically leak-tested at working pressure, and a sampling ratio is hydraulically proof-tested to 1.5x rated pressure.<\/p>\n

Il nostro flusso di produzione in 10 fasi<\/h3>\n
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Fase 01 \u2014 Materia prima<\/h5>\n

Tubi e barre d'acciaio certificati, provenienti da stabilimenti con tracciabilit\u00e0 completa MTR.<\/p>\n<\/div>\n

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Fase 02 \u2014 Lavorazione CNC<\/h5>\n

Alesatura, tornitura di bielle e filettatura su torni CNC calibrati quotidianamente.<\/p>\n<\/div>\n

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Fase 03 \u2014 Cromatura delle barre<\/h5>\n

Barra temprata a induzione, rettificata a 0,8 \u03bcm Ra, quindi cromata duramente con uno spessore minimo di 0,025 mm.<\/p>\n<\/div>\n

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Fase 04 \u2014 Saldatura<\/h5>\n

Le stazioni di saldatura MIG robotizzate mantengono la geometria del cordone di saldatura entro una tolleranza di \u00b10,3 mm.<\/p>\n<\/div>\n

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Fase 05 \u2014 Pittura<\/h5>\n

Sabbiatura, primer epossidico, finitura con verniciatura a polvere con resistenza alla nebbia salina di oltre 500 ore.<\/p>\n<\/div>\n

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Fase 06 \u2014 Assemblaggio<\/h5>\n

Pistone, biella, pacco guarnizioni e premistoppa assemblati con controllo dei difetti in ogni stazione.<\/p>\n<\/div>\n

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Fase 07 \u2014 Test finale<\/h5>\n

Controllo delle perdite pneumatiche su ogni unit\u00e0; prova di tenuta idraulica su campione o su richiesta.<\/p>\n<\/div>\n

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Fase 08 \u2014 Confezionamento<\/h5>\n

Casse di legno fumigate ISPM-15 con tappi di protezione per le porte, caricate dal porto di Ningbo.<\/p>\n<\/div>\n<\/div>\n

Richiedi un preventivo \u2192<\/a><\/div>\n
\"welded<\/div>\n

Sourcing a WP-3000PSI Directly from Hangzhou, China<\/h2>\n

La provincia di Zhejiang \u00e8 un importante centro di produzione di cilindri idraulici in Cina e il nostro stabilimento di Hangzhou si trova proprio al centro di questo polo produttivo. Spediamo direttamente da Hangzhou, in Cina, al porto di Ningbo e da l\u00ec verso qualsiasi porto marittimo del mondo con partenze settimanali. La vicinanza del nostro stabilimento al porto di Ningbo garantisce agli acquirenti un corridoio logistico efficiente, con il carico dei container spesso entro sette giorni lavorativi dall'approvazione del collaudo finale.<\/p>\n

Overseas buyers reach our production floor through Ningbo Port for sea freight, or Hangzhou Xiaoshan International Airport for air samples. Any buyer who needs to receive a WP-3000PSI in Shanghai, Guangzhou, Chongqing, or any industrial hub across China can expect inland dispatch within three working days of approval thanks to the Hangzhou-Ningbo freight corridor and Yangtze River Delta logistics network.<\/p>\n

Termini dell'ordine e pagamento<\/h3>\n

Standard payment terms are 30% TT deposit with balance against copy of bill of lading, or LC at sight for orders above USD 50,000. Trade Assurance orders through Alibaba are accepted up to USD 100,000. We support FOB Ningbo, CIF to most major ports, and DDP for select European and North American destinations. All welded through hole hydraulic cylinder shipments leave our Hangzhou plant in fumigated wood crates with port-protection caps on ports and desiccant inside the cylinder bore.<\/p>\n

Domande frequenti<\/h2>\n
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\nHow much does a WP-3000PSI welded through hole hydraulic cylinder cost in China export markets?<\/summary>\n

WP-3000PSI pricing depends on bore, stroke, and quantity. For a 2″ bore with a 24″ stroke in container-load quantity, our Hangzhou factory typically quotes a price that lands well below equivalent North American and European branded parts. Send your bore, stroke, and annual usage to our contact form and we will reply with a written quote in one working day.<\/p>\n<\/details>\n

\nWhat is the minimum order quantity for WP-3000PSI welded through hole cylinders for dump trailer builds?<\/summary>\n

We accept orders from 20 pieces per part number on catalog WP-3000PSI SKUs, and routinely ship 500-2,000 unit batches for dump body OEMs. Samples of 1-5 units for qualification work are available with a small setup surcharge.<\/p>\n<\/details>\n

\nWhich welded through hole hydraulic cylinder supplier in Hangzhou handles extended 60-inch strokes?<\/summary>\n

EVER POWER builds extended-stroke WP-3000PSI welded cylinders up to 72″ on the 2″ bore. Our Hangzhou plant runs a dedicated long-bed hone for strokes over 48″, and the CAD team will confirm column-load and de-rated pressure figures on your specific dimension before quoting.<\/p>\n<\/details>\n

\nHow do I request a price quote for WP-3000PSI cylinders for my scissor-lift platform build?<\/summary>\n

Use the Inquire Now button or fill the contact form with platform height, target lift speed, pin centers, and annual production volume. Our Hangzhou sales engineering desk typically returns a written quote within 24 hours during Chinese business days.<\/p>\n<\/details>\n

\nWhat makes a welded through hole cylinder better than a welded clevis cylinder for narrow brackets?<\/summary>\n

A welded through hole cylinder uses a single drilled pin eye at the rod end, which reduces the bracket-to-bracket width by roughly 30% compared with a double-yoke clevis. For packagings where chassis or frame space is limited, the WP-3000PSI welded cylinder fits where a wider clevis part physically cannot.<\/p>\n<\/details>\n

\nWhere can I buy a WP-3000PSI welded cylinder with fast delivery to my Southeast Asian port?<\/summary>\n

We ship directly from Hangzhou to Ningbo Port and onwards to Southeast Asian ports including Port Klang, Tanjung Priok, and Laem Chabang. Typical production-plus-transit time runs 25 to 40 days for the region. Inland dispatch for domestic Chinese buyers in Shanghai or Guangzhou takes three to five working days.<\/p>\n<\/details>\n

\nWhich bore size should I pick for a 15,000 lb tail-lift cylinder on a box truck?<\/summary>\n

For a 15,000 lb working load the WP3030XX 3″ bore delivers 21,200 lbs of rated column load at 3000 PSI, a comfortable fit with safety margin. Send your tail-lift geometry and we will confirm the best stroke and pin-size combination for your hinge centers.<\/p>\n<\/details>\n<\/div>\n