{"id":2279,"date":"2026-06-26T07:24:31","date_gmt":"2026-06-26T07:24:31","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/?post_type=product&p=2279"},"modified":"2026-06-26T07:24:31","modified_gmt":"2026-06-26T07:24:31","slug":"5-stage-telescopic-dump-truck-hydraulic-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/ar\/product\/5-stage-telescopic-dump-truck-hydraulic-cylinder\/","title":{"rendered":"5 Stage Telescopic Dump Truck Hydraulic Cylinder \u2014 Maximum Compactness, Steel, Custom Bore 2\u20136 inch"},"content":{"rendered":"
\n

<\/p>\n

\n
\n
5-STAGE MAXIMUM<\/span>
\nSHORTEST RETRACTED LENGTH<\/span><\/div>\n
\n
\n

5 Stage Telescopic
\nDump Truck Cylinder<\/h2>\n

The maximum-stage answer for minimum-space frames.<\/p>\n

A 2-stage retracts to ~60% of its stroke. A 3-stage to ~45%. A 5-stage telescopic hydraulic cylinder<\/a> retracts to approximately 25\u201330% of its fully extended length \u2014 packing the full dump truck tipping stroke into a retracted package that fits within the shallowest chassis frames. This is the cylinder for heavy-duty dump trucks where every millimetre of underframe space is already occupied by axles, cross-members, air tanks, and fuel tanks.<\/p>\n<\/div>\n

\n
\n
Stages<\/span>5<\/span><\/div>\n
Bore<\/span>2\u20136\u2033<\/span><\/div>\n
Stroke<\/span>4\u2013100\u2033<\/span><\/div>\n
Ports<\/span>G\/SAE\/NPT\/M<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

The 5-stage telescopic cylinder is the most complex product in the multistage family \u2014 and the most compact per unit of stroke. Five cylindrical sections nest inside each other like Russian dolls, each stage sliding out of the next as hydraulic pressure pushes them sequentially from the largest diameter to the smallest. The engineering trade-off is clear: maximum stroke compactness in exchange for the highest manufacturing complexity, the most inter-stage seals, and the greatest force reduction from the outer stage to the inner stage. For dump trucks where the frame geometry leaves no room for a 2 or 3-stage retracted length, the 5-stage is not a preference \u2014 it is the only option that physically fits.<\/p>\n<\/section>\n

\"Telescopic<\/p>\n

\n

5 Stage Telescopic Dump Truck Cylinder \u2014 Customisation Parameters<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Stage Count<\/td>\n5 stages (outer barrel + 4 inner plungers)<\/td>\n<\/tr>\n
Bore Size<\/td>\n2\u20136 inch (customisable per order)<\/td>\n<\/tr>\n
Rod Size<\/td>\n1.125\u20134 inch (customisable per order)<\/td>\n<\/tr>\n
Stroke Size<\/td>\n4\u2013100 inch (customisable per order)<\/td>\n<\/tr>\n
Pin Size<\/td>\n0.5\u20132 inch (customisable per order)<\/td>\n<\/tr>\n
Port Options<\/td>\nG (BSP) \/ SAE (JIC) \/ NPT \/ M (metric)<\/td>\n<\/tr>\n
Body Material<\/td>\nSteel (stainless steel available)<\/td>\n<\/tr>\n
Acting Type<\/td>\nSingle-acting (standard) or double-acting<\/td>\n<\/tr>\n
Application<\/td>\nHeavy-duty dump trucks, highway haulers, large tippers<\/td>\n<\/tr>\n
Certification \/ Lead Time<\/td>\nISO 9001 \/ 25\u201335 days<\/td>\n<\/tr>\n
Warranty<\/td>\n1 year<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Why 5 Stages \u2014 When Maximum Stroke Must Fit Minimum Space<\/h2>\n

The number of stages in a telescopic cylinder is not a quality indicator \u2014 it is a packaging solution. More stages does not mean “better”; it means “more compact when retracted.” The 5-stage telescopic cylinder exists for one specific engineering reason: when the ratio of available mounting space to required stroke falls below approximately 30%, no 2, 3, or 4-stage cylinder will fit, and 5 stages is the minimum configuration that achieves the stroke within the available envelope.<\/p>\n

\n\n\n\n\n\n\n\n\n
Stage Count<\/th>\nRetracted \u00f7 Extended<\/th>\nSeal Sets<\/th>\nTrade-off<\/th>\n<\/tr>\n<\/thead>\n
2-stage<\/td>\n~55\u201365%<\/td>\n1<\/td>\nSimplest, cheapest, most reliable \u2014 but longest retracted<\/td>\n<\/tr>\n
3-stage<\/td>\n~40\u201350%<\/td>\n2<\/td>\nGood balance of compactness and simplicity<\/td>\n<\/tr>\n
4-stage<\/td>\n~32\u201340%<\/td>\n3<\/td>\nCompact, suitable for most large dump trucks<\/td>\n<\/tr>\n
5-stage<\/td>\n~25\u201330%<\/td>\n4<\/td>\nMaximum compactness \u2014 for the tightest frames only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n
5-Stage Advantage: Shortest Retracted Length<\/strong><\/p>\n

A 5-stage telescopic cylinder with 2,500 mm total stroke retracts to approximately 625\u2013750 mm. The same stroke in a 2-stage would require approximately 1,375\u20131,625 mm of retracted length \u2014 more than double. For dump trucks with limited underframe depth (heavy-duty rigid-frame trucks, short-wheelbase tippers, urban refuse vehicles), the 5-stage is the only configuration that physically fits between the chassis rails.<\/p>\n<\/div>\n

5-Stage Trade-off: More Seals, More Complexity<\/strong><\/p>\n

The 5-stage has four sets of inter-stage seals \u2014 four times the seal count of a 2-stage. Each seal set is a potential leak path after years of service. The manufacturing complexity is also higher: five precision-honed bores, five machined plunger surfaces, and five sets of guide bearings, all assembled with precise concentricity. The 5-stage is the most expensive telescopic cylinder per unit of stroke \u2014 justified only when the packaging constraint demands it.<\/p>\n<\/div>\n

5-Stage Trade-off: Greatest Force Reduction<\/strong><\/p>\n

Each stage has a smaller bore than the one outside it. After four bore reductions (5 stages), the innermost plunger may have only 15\u201325% of the outer barrel’s piston area \u2014 producing correspondingly less force at the same system pressure. For dump truck tipping, this is acceptable because the force requirement decreases as the body tilts and gravity assists. The outer stages produce the high initial breakaway force; the inner stages provide the final extension at reduced force.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

5 Stage in Dump Trucks \u2014 Where the Extra Stages Are Required<\/h2>\n

Dump trucks are larger, heavier, and more frame-constrained than dump trailers. The chassis frame must accommodate the engine, transmission, fuel tanks, air reservoirs, exhaust aftertreatment systems, and battery boxes \u2014 leaving minimal vertical depth for the telescopic hoist cylinder. The 5-stage configuration is the standard choice for the following dump truck categories.<\/p>\n

\"5<\/p>\n

\n
\n

Heavy-Duty Highway Dump Trucks<\/h3>\n

Rigid-frame dump trucks at 20\u201350 tonnes GVW for highway construction, quarrying, and bulk earthmoving. These trucks have long dump bodies requiring 2,000\u20132,500 mm of tipping stroke, but the chassis frame depth between the rails is only 500\u2013700 mm. The 5-stage telescopic cylinder is the standard hoist configuration, typically mounted as a single centre-line cylinder or a front-push hoist behind the cab.<\/p>\n<\/div>\n

\n

Short-Wheelbase Urban Tippers<\/h3>\n

Compact rigid tippers for urban construction, waste collection, and municipal works. The short wheelbase leaves very little longitudinal space between the cab and the rear axle. The 5-stage configuration packs the full tipping stroke into the shortest available mounting envelope, allowing the dump body to occupy maximum length for payload capacity without sacrificing tipping performance.<\/p>\n<\/div>\n

\n

Mining Haul Trucks<\/h3>\n

Large-capacity mining haul trucks where the dump body stroke can exceed 2,500 mm and the available frame depth is constrained by the massive drivetrain components underneath. The 5-stage telescopic cylinder at the upper end of the bore range (5\u20136 inch) produces the breakaway force needed for payloads of 30\u201350 tonnes of ore or overburden while fitting within the frame structure.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

OEM & ODM \u2014 Ordering Your 5 Stage Telescopic Cylinder<\/h2>\n
\n
\n
\n

What You Provide<\/h3>\n<\/div>\n
\n

Bore, rod, total stroke, retracted length (or maximum available mounting space \u2014 this is the critical dimension for 5-stage), mounting type at both ends, port thread (G\/SAE\/NPT\/M), working pressure, and truck model or application description. If replacing an existing 5-stage cylinder, provide the original measurements or a sample. For new truck designs, provide a chassis cross-section drawing showing the available cylinder envelope.<\/p>\n<\/div>\n<\/div>\n

\n
\n

What Ever-Power Delivers<\/h3>\n<\/div>\n
\n

Drawing confirmation 2\u20133 days. Sample available (cost credited to production order). Lead time 25\u201335 days. 100% individual pressure test at 1.5\u00d7 working pressure with certificate. 1-year warranty. The 5-stage requires more manufacturing steps than lower stage counts \u2014 confirm lead time at order for tight schedules. Contact Korea Ever-Power<\/a> for quotation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\"Telescopic<\/p>\n

\n

5 Stage Telescopic Dump Truck Cylinder \u2014 Technical FAQ<\/h2>\n
\n
\n

How much force does the innermost (5th) stage produce compared to the outermost stage?<\/h3>\n

The exact ratio depends on the bore diameter reduction between each stage, which is determined by the wall thickness required for each barrel section. In a typical 5-stage telescopic cylinder, the innermost plunger has approximately 15\u201325% of the outer barrel’s piston area. At the same system pressure, it produces 15\u201325% of the first-stage force. This is acceptable for dump truck tipping because by the time the 5th stage extends, the dump body is already at a steep angle where gravity is actively pulling the load out \u2014 the cylinder’s role has shifted from force generation to position control.<\/p>\n<\/div>\n

\n

Is the 5-stage more expensive than a 3-stage for the same stroke?<\/h3>\n

Yes. The 5-stage requires five precision-honed bores (versus three), four sets of inter-stage seals (versus two), five sets of guide bearings, and longer assembly time. The material cost is also higher because the outer barrel must have a larger starting diameter to accommodate five nested sections. Expect the 5-stage to cost 30\u201360% more than a 3-stage at the same total stroke. The premium is the cost of compactness \u2014 choose the 5-stage only when the 3-stage retracted length does not fit your frame.<\/p>\n<\/div>\n

\n

Do all 5 stages extend at the same speed?<\/h3>\n

No. Each stage extends at a different speed because each stage has a different bore area. At constant pump flow, the extension speed is inversely proportional to the piston area: smaller bore = faster extension. The outermost stage (largest bore) extends the slowest; the innermost stage (smallest bore) extends the fastest. On a dump truck, this means the initial body rise is slow (high force, low speed) and the final extension is fast (low force, high speed) \u2014 a natural match for the tipping load profile where the heaviest lifting occurs at the beginning of the cycle.<\/p>\n<\/div>\n

\n

Can a 5-stage telescopic cylinder be rebuilt or resealed in the field?<\/h3>\n

Resealing a 5-stage telescopic cylinder requires complete disassembly of all five stages \u2014 each stage must be extracted, the old seals removed, new seals installed, and the stages reassembled in the correct order with the correct concentricity. This is a workshop operation, not a roadside repair. For dump truck fleet operators, maintaining a spare 5-stage cylinder and swapping the complete unit is typically faster and more reliable than attempting a field rebuild.<\/p>\n<\/div>\n

\n

Is the 5-stage available in double-acting?<\/h3>\n

Yes \u2014 but double-acting 5-stage is the most complex telescopic configuration to manufacture. Each of the five stages requires both extend-side and retract-side seals, plus internal oil passages for the retract circuit through all five stages. The retracted length increases compared to the single-acting version (additional port and passage hardware), and the cost premium over single-acting is significant. Specify double-acting 5-stage only when the application absolutely requires hydraulic retraction. Contact Korea Ever-Power<\/a> for feasibility and pricing.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Field Reports<\/h2>\n
\n
\n
\n
D<\/div>\n
\n
David L. \u2014 Heavy Truck Body Builder<\/div>\n
Verified Purchase \u00b7 Ontario, Canada \u00b7 April 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We build dump bodies for Class 8 highway trucks \u2014 20\u201330 tonne payloads, 18-foot bodies. The frame depth between the rails after fuel tanks and air tanks are mounted is only about 550 mm. The 5-stage is the only telescopic cylinder that gives us 2,200 mm of stroke within that envelope. Ordered 8 units from Ever-Power \u2014 6-inch bore, 88-inch stroke, SAE ports, single-acting. All 8 matched our spec exactly. Collapsed length was 22 inches \u2014 fits our frame with 2 inches to spare. Five months in service across 8 trucks, zero warranty issues.<\/p>\n<\/div>\n

\n
\n
N<\/div>\n
\n
NordTruck AB \u2014 Municipal Tipper Manufacturer<\/div>\n
Verified Purchase \u00b7 Sweden \u00b7 February 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We build short-wheelbase urban tippers for municipal waste and construction debris. The frame is extremely tight \u2014 3.2 metre wheelbase, no room for a 3-stage retracted length. The 5-stage from Ever-Power delivers our 1,800 mm tipping stroke in a 480 mm collapsed package. BSP G-thread, 4-inch bore. We’ve placed 4 production orders (15 units each) over the past year. Dimensional consistency across 60 cylinders is excellent \u2014 every one drops into our production line without rework. The price premium over a 3-stage is about 40%, which is consistent with the additional manufacturing complexity.<\/p>\n<\/div>\n

\n
\n
R<\/div>\n
\n
Raj P. \u2014 Mining Equipment Maintenance Manager<\/div>\n
Verified Purchase \u00b7 March 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2606<\/div>\n<\/div>\n

Replaced the 5-stage hoist cylinder on a 40-tonne mining haul truck. 5-inch bore, 96-inch stroke, metric ports. The Ever-Power replacement matched the collapsed and extended lengths within 2 mm of the original \u2014 excellent dimensional accuracy. Four stars because the resealing procedure at our next service interval will require complete 5-stage disassembly in the workshop \u2014 a 6\u20138 hour job for two technicians. This is inherent to any 5-stage design, not specific to Ever-Power. We’re keeping a spare complete cylinder on the shelf now so we can swap and rebuild offline.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Other Hydraulic Cylinder Categories from Korea Ever-Power<\/h2>\n
\n
\"Forklift<\/p>\n
\n

Forklift Hydraulic Cylinders \u2192<\/a><\/h3>\n

Lifting, tilt, steering, and accessory cylinders. OEM replacement including HCYY part numbers.<\/p>\n<\/div>\n<\/div>\n

\"Aerial<\/p>\n
\n

Aerial Work Vehicle Cylinders \u2192<\/a><\/h3>\n

Scissor lift and boom lift cylinders \u2014 lifting, steering, boom angle, levelling, folding.<\/p>\n<\/div>\n<\/div>\n

\"All<\/p>\n
\n

All Korea Ever-Power Hydraulic Cylinders \u2192<\/a><\/h3>\n

Full catalogue \u2014 welded, tie-rod, telescopic, and custom-engineered hydraulic cylinders.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

5-stage telescopic hydraulic cylinder for dump trucks \u2014 five nested sections that deliver the longest possible stroke from the shortest possible retracted length. When the available mounting space is less than 30% of the required stroke, the 5-stage is the engineering answer. Five stages means five precision-honed bores, five sets of inter-stage seals, and five sequential extension steps \u2014 the most complex telescopic cylinder to manufacture, but the only configuration that fits the most space-constrained dump truck frames. Custom bore 2\u20136 inch, stroke 4\u2013100 inch. G\/SAE\/NPT\/M ports. Steel body. ISO 9001. Korea Ever-Power OEM & ODM.<\/div>","protected":false},"featured_media":2275,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[851],"product_tag":[],"class_list":["post-2279","product","type-product","status-publish","has-post-thumbnail","product_cat-telescopic-hydraulic-cylinder","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/product\/2279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/comments?post=2279"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/media\/2275"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/media?parent=2279"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/product_brand?post=2279"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/product_cat?post=2279"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ar\/wp-json\/wp\/v2\/product_tag?post=2279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}