{"id":2591,"date":"2026-07-01T06:03:33","date_gmt":"2026-07-01T06:03:33","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/mining-dump-truck-lifting-cylinder\/"},"modified":"2026-07-01T06:03:38","modified_gmt":"2026-07-01T06:03:38","slug":"mining-dump-truck-lifting-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/de\/produkt\/mining-dump-truck-lifting-cylinder\/","title":{"rendered":"Mining Dump Truck Lifting Cylinder"},"content":{"rendered":"

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\n \"Mining<\/p>\n
\n Mining Dump Truck \u00b7 1st of 5<\/span><\/p>\n

Mining Dump Truck Lifting Cylinder<\/h2>\n

A new machine category \u2014 and the heaviest payloads on wheels. Mining haul trucks carry 30\u2013400 tonnes of rock per load, dump it by hoisting the body to 50\u00b0, then return empty for the next load. Two or three lifting cylinders raise this combined 600-tonne mass \u2014 body plus payload \u2014 15\u201325 times per shift, shift after shift, for 60,000 hours.<\/p>\n

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120\u2013380mm<\/span>Bore<\/span><\/div>\n
2\u20133 Stage<\/span>Telescopic<\/span><\/div>\n
30\u2013400 t<\/span>Payload Range<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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The Harshest Working Environment for Any Mobile Hydraulic Cylinder<\/span><\/h2>\n
\n \"Mining<\/p>\n

Open-pit mines subject equipment to extremes that no other mobile application matches. Dust: crushed rock produces micron-scale silica particles that infiltrate every exposed surface \u2014 more abrasive than construction-site soil, more penetrating than agricultural chaff. Temperature: Arctic iron-ore mines reach -45 \u00b0C in winter; Australian and Middle Eastern copper mines reach +55 \u00b0C in summer. Vibration: the truck travels 5\u201315 km per load on ungraded haul roads \u2014 continuous vibration that loosens fittings and fatigues metal.<\/p>\n<\/div>\n

Korea Ever-Power engineers the mining dump truck lifting cylinder for this environment as the first of five mining dump truck hydraulic cylinders<\/a> \u2014 followed by the steering (#28), front suspension (#29), rear suspension (#30), and piston accumulator (#31).<\/p>\n<\/section>\n

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Technical Specifications<\/span><\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product<\/td>\nMining Dump Truck Lifting Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nLift \/ lower the dump body for cargo dumping<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n120 mm \u2013 380 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n90 mm \u2013 350 mm<\/td>\n<\/tr>\n
Construction<\/td>\nTwo-stage or three-stage telescopic<\/td>\n<\/tr>\n
Application<\/td>\nMining Dump Truck (rigid frame, 30\u2013400 t payload)<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 100% hydrostatic tested<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n

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Two-Stage vs Three-Stage \u2014 Matching the Cylinder to the Truck Class<\/h2>\n

The number of telescopic stages determines the retracted length, the total stroke, and the force profile of the lifting cylinder. Mining truck OEMs select the stage count based on the truck’s payload class and body geometry:<\/p>\n

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\n Two-stage \u2014 30\u2013150 tonne payload trucks<\/strong><\/p>\n

Two nested stages provide a shorter total stroke but higher first-stage force \u2014 sufficient for the body weight and payload of trucks in the 30\u2013150 tonne class. The two-stage design is simpler (fewer seals, fewer overlap joints) and has a longer service life in the abrasive mining environment because there are fewer sealing interfaces exposed to dust contamination. Most mine-site haulage in quarries, sand operations, and small to mid-size metalliferous mines uses two-stage lifting cylinders.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\n Three-stage \u2014 150\u2013400 tonne payload trucks<\/strong><\/p>\n

Three stages provide longer total stroke from a shorter retracted length \u2014 essential for the ultra-class trucks (CAT 797, Komatsu 980E, Liebherr T284 class) where the body is 6\u20138 metres above ground and the tipping angle must reach 45\u201355\u00b0 for clean discharge of sticky ore. The third stage adds an extra sealing interface and an additional overlap joint \u2014 both requiring enhanced contamination protection in the mining environment. Contact the Korea Ever-Power engineering team<\/a> for mining truck cylinder specifications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n \"Mining
\n<\/section>\n

<\/p>\n

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100,000+ Dump Cycles \u2014 Designed for a 60,000-Hour Truck Life<\/span><\/h2>\n
\n \"Mining<\/p>\n

A mining haul truck operates 20\u201322 hours per day, 350+ days per year, for 8\u201312 years. At 15\u201325 dump cycles per shift (two 12-hour shifts per day), the lifting cylinder performs 10,000\u201318,000 full extension\/retraction cycles per year \u2014 totalling 80,000\u2013150,000 cycles over the truck’s 60,000-hour design life. Every cycle applies the full body-plus-payload force to the cylinder, followed by a gravity-assisted lowering.<\/p>\n<\/div>\n

This cycle count at full load is far higher than any crane cylinder and approaches the cycle count of a factory press cylinder \u2014 but in a mobile, outdoor, contaminated environment rather than a clean factory. The lifting cylinder must combine the fatigue life of an industrial cylinder with the contamination resistance of a field cylinder \u2014 a combination that drives Korea Ever-Power’s material selection (high-fatigue-strength barrel steel), chrome plating thickness (80 \u00b5m minimum), and seal design (heavy-duty quad-lip wiper with integrated scraper).<\/p>\n

Bore honing is Ra 0.2\u20130.4 \u00b5m. Stage overlap surfaces are hard-chrome plated both internally and externally. Seals are polyurethane rated for -40 \u00b0C to +100 \u00b0C (the widest temperature range in the mobile machinery cylinder catalogue). Every lifting cylinder is hydrostatic tested at 1.5\u00d7 rated pressure per stage and full-cycle tested for smooth sequential extension and controlled gravity-lowering.<\/p>\n<\/section>\n

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OEM & ODM<\/span><\/h2>\n
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What You Provide<\/strong><\/div>\n
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Truck model and payload class, body weight (empty), target dump angle, number of cylinders per truck (typically 2\u20133), stage count (2 or 3), bore\/rod or force requirement, dump cycle time, temperature range, dust contamination level, design life in hours, and the body hinge\/cylinder mounting geometry drawing.<\/p>\n<\/div><\/div>\n

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What the Factory Delivers<\/strong><\/div>\n
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Engineering drawing with stage diameters, stage strokes, stage overlap, seal specification per stage (quad-lip wiper + pressure seal + guide ring), 80 \u00b5m chrome plating, wide-temperature seal, and mounting dimensions. Hydrostatic per stage + full-cycle functional test. Seal kits. Browse the telescopic cylinders<\/a> and the Korea Ever-Power catalogue<\/a>.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n

\"Korea
\n<\/section>\n

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FAQ<\/span><\/h2>\n
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How does the mining lifting cylinder differ from a standard dump truck telescopic cylinder?<\/h3>\n

Scale and environment. A standard dump truck carries 10\u201330 tonnes on paved roads; a mining haul truck carries 30\u2013400 tonnes on unpaved haul roads. The mining cylinder has a much larger bore (up to 380 mm vs 200 mm for on-road), heavier chrome (80 \u00b5m vs 50 \u00b5m), wider temperature range (-40 to +100 \u00b0C vs -30 to +80 \u00b0C), and quad-lip wipers designed for silica-dust contamination. The design life is 60,000 hours vs 15,000 hours for on-road.<\/p>\n<\/p><\/div>\n

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How many lifting cylinders does a mining truck use?<\/h3>\n

Most mining trucks use 2 or 3 lifting cylinders positioned between the body and the chassis frame. The cylinders work in parallel \u2014 all extending simultaneously to raise the body. On ultra-class trucks (300\u2013400 tonne payload), 3 cylinders are typical; on smaller trucks (30\u2013150 tonnes), 2 cylinders are standard. Korea Ever-Power supplies matched sets.<\/p>\n<\/p><\/div>\n

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What is the typical seal replacement interval in mining service?<\/h3>\n

In a well-maintained truck with functioning dust suppression, the lifting cylinder seal life is typically 5,000\u201310,000 hours (1\u20132 years). In extreme dust or poor maintenance conditions, intervals may shorten to 3,000\u20135,000 hours. Korea Ever-Power supplies seal kits sized for each stage to minimise downtime during preventive maintenance. Browse forklift cylinders<\/a> and industrial engineering cylinders<\/a> for other heavy-duty lifting applications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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Related Categories<\/span><\/h2>\n
<\/p>\n
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\"Telescopic\"<\/div>\n
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Telescopic Hydraulic Cylinders \u2192<\/div>\n
Dump truck, trailer, hoist.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

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\"Forklift\"<\/div>\n
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Forklift Hydraulic Cylinders \u2192<\/div>\n
Lift, tilt, steer \u2014 OEM.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

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\"AWV\"<\/div>\n
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Aerial Work Vehicle Cylinders \u2192<\/div>\n
Scissor, boom, platforms.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/div>\n<\/section>\n

<\/main><\/p>","protected":false},"excerpt":{"rendered":"

Mining dump truck lifting cylinder \u2014 the multi-stage (2\u20133 stage) telescopic hydraulic cylinder that lifts the dump body on mining haul trucks carrying 30\u2013400 tonnes of ore, rock, or overburden. The largest mining trucks (payload 360\u2013400 tonnes) use cylinder pairs with bore diameters up to 380 mm and rod diameters up to 350 mm, producing the force to hoist a body weighing 200+ tonnes (empty) plus 400 tonnes of payload to a dump angle of 45\u201355\u00b0. These cylinders operate in the harshest mobile-equipment environment on earth: open-pit mines with extreme dust, vibration, temperature swings, and 100,000+ dump cycles over a 60,000-hour truck life. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2592,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[854],"product_tag":[],"class_list":["post-2591","product","type-product","status-publish","has-post-thumbnail","product_cat-mobile-machinery-hydraulic-cylinders","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/product\/2591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/comments?post=2591"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/media\/2592"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/media?parent=2591"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/product_brand?post=2591"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/product_cat?post=2591"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/de\/wp-json\/wp\/v2\/product_tag?post=2591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}