{"id":2597,"date":"2026-07-01T06:03:33","date_gmt":"2026-07-01T06:03:33","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/mining-dump-truck-rear-suspension-cylinder\/"},"modified":"2026-07-01T06:03:40","modified_gmt":"2026-07-01T06:03:40","slug":"mining-dump-truck-rear-suspension-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/hi\/product\/mining-dump-truck-rear-suspension-cylinder\/","title":{"rendered":"Mining Dump Truck Rear Suspension Cylinder"},"content":{"rendered":"

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\n \"Mining<\/p>\n
\n Mining Dump Truck \u00b7 4th of 5<\/span><\/p>\n

Mining Dump Truck
Rear Suspension Cylinder<\/h2>\n

Empty: 60 tonnes. Loaded: 600 tonnes. The rear suspension cylinder absorbs a 10:1 load swing every haul cycle \u2014 plus the 30-tonne impact shock each time the excavator drops a bucketful of rock directly onto the body above.<\/p>\n

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150\u2013450mm<\/span>Bore<\/span><\/div>\n
\u2264400mm<\/span>Stroke<\/span><\/div>\n
38 MPa<\/span>Pressure<\/span><\/div>\n
\u00d74<\/span>Per Truck<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

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The 10:1 Load Swing \u2014 The Engineering Challenge the Front Suspension Doesn’t Face<\/span><\/h2>\n
\n \"Mining<\/p>\n

The front suspension (#29) carries a load that varies by 20\u201340% between empty and loaded trips \u2014 a gentle, predictable change. The rear suspension carries the entire payload mass, which swings from zero (empty body) to 300\u2013400 tonnes (full load) in the space of 3\u20135 minutes while the excavator fills the body. Each bucket load adds 30\u201350 tonnes in a single impact \u2014 the suspension must absorb this step-change without bottoming out or bouncing the body.<\/p>\n<\/div>\n

The nitrogen gas pre-charge for the rear struts is set to produce the correct ride height when the truck is loaded \u2014 which means the suspension is over-extended (high in its travel) when the truck is empty. This trade-off is deliberate: the truck spends most of its hauling time either loaded (travelling to the dump point) or being loaded (at the excavator face). The empty-return trip is shorter and at lower speed, so the softer, higher ride position during the empty run is acceptable.<\/p>\n

Korea Ever-Power tunes the rear suspension for each truck model’s payload class \u2014 with the gas pre-charge optimised for the loaded condition. Browse the full mobile machinery hydraulic cylinder<\/a> range.<\/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\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product<\/td>\nMining Dump Truck Rear Suspension Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nSupport weight, absorb, and eliminate vibration<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n150 mm \u2013 450 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n120 mm \u2013 400 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 400 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\nMaximum 38 MPa<\/td>\n<\/tr>\n
Application<\/td>\nMining Dump Truck (rear axle \/ tandem axle)<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 100% tested \u00b7 gas pre-charge certified<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n

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Excavator Impact \u2014 30 Tonnes Dropped from 3 Metres, 5 Times per Load<\/h2>\n

The excavator doesn’t gently place the ore into the truck body. It swings the bucket over the body and opens it \u2014 dropping 30\u201350 tonnes of rock from a height of 2\u20134 metres. Each bucket drop produces a shock pulse that travels through the body, through the chassis, and into the rear suspension. A typical load requires 4\u20137 bucket drops to fill the body \u2014 each one a sharp impact that the rear suspension must absorb.<\/p>\n

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\n Impact absorption \u2014 gas spring compression<\/strong><\/p>\n

Each bucket impact compresses the rear suspension by 30\u201380 mm in 0.1\u20130.3 seconds \u2014 a piston velocity far exceeding normal haul-road cycling. The damping orifice must flow enough oil at this high velocity to prevent pressure spikes that could damage seals, while still providing enough restriction to prevent the body from rebounding violently after the impact.<\/p>\n<\/p><\/div>\n

\n Asymmetric loading \u2014 one side first<\/strong><\/p>\n

The excavator usually loads one side of the body first \u2014 placing the first 2\u20133 buckets on the left, then the last 2\u20133 on the right (or alternating). This asymmetric loading compresses one side of the rear suspension more than the other, tilting the body sideways. The four rear suspension cylinders must equalise this tilt through their interconnected hydraulic circuit \u2014 or through the piston accumulator (#31) that balances the load across axles. Contact the Korea Ever-Power engineering team<\/a> for impact-loading specifications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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

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Four Rear Struts, Not Two \u2014 Why the Rear Axle Needs Double the Support Points<\/span><\/h2>\n
\n \"Rear<\/p>\n

The front axle uses 2 suspension cylinders (one per wheel). The rear axle uses 4 \u2014 two per wheel, positioned fore and aft on each rear wheel hub. On tandem-rear-axle trucks, the total may reach 8 rear struts (4 per axle \u00d7 2 axles). The reason is simple: the rear axle load is 3\u20135\u00d7 the front axle load when the truck is full, and the impact loading from the excavator demands more support points to distribute the force without overloading any single strut.<\/p>\n<\/div>\n

The four rear struts also provide roll stability \u2014 with two struts per side spaced fore and aft, the rear suspension resists the body’s tendency to roll sideways during cornering on the haul road. A two-strut arrangement (as on the front) would allow more body roll under the heavier rear load \u2014 increasing the risk of load shifting within the body.<\/p>\n

Korea Ever-Power supplies rear suspension cylinders in matched sets of 4 (single rear axle) or 8 (tandem rear axle) \u2014 all gas-charged on the same calibrated station, all damping-tested at the same flow rate, ensuring symmetrical support across the entire rear axle group.<\/p>\n<\/section>\n

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Manufacturing Process<\/span><\/h2>\n

The rear suspension cylinder shares the bore\/rod\/stroke dimensions of the front \u2014 but the internal tuning is different. The damping orifice is larger (to handle the higher piston velocities from excavator impacts without excessive pressure spikes). The gas pre-charge is higher (to support the heavier loaded rear axle). The accumulator volume is proportionally larger to maintain a progressive spring rate across the full 10:1 load range.<\/p>\n

Bore honed to Ra 0.2\u20130.4 \u00b5m. Chrome 80 \u00b5m. Seals rated -40 to +100 \u00b0C. Hydrostatic tested at 57 MPa (1.5\u00d7 rated). Impact-cycle tested \u2014 simulating excavator bucket-drop loading at the worst-case frequency and amplitude to verify seal survival and damping performance under impact conditions. Matched sets gas-charged to within \u00b10.5 bar.<\/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, rear axle load (empty, loaded, and impact-loaded), number of rear struts per truck, target ride frequency (loaded), damping ratio, stroke, gas pre-charge, accumulator volume, excavator match (bucket size and drop height), temperature range, and the rear suspension mounting geometry drawing.<\/p>\n<\/div><\/div>\n

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What the Factory Delivers<\/strong><\/div>\n
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Matched set (4 or 8) with engineering drawing, impact-rated damping orifice, gas pre-charge certificate, 80 \u00b5m chrome, -40\/+100 \u00b0C seal spec, and mounting dimensions. Hydrostatic + damping + impact-cycle + gas-charge test certificates. Seal kits. Browse the mobile machinery cylinder family<\/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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What is the main difference between the front and rear suspension cylinders?<\/h3>\n

Same bore range, same pressure \u2014 but different internal tuning. The rear has a higher gas pre-charge (to support the heavier loaded axle), a larger damping orifice (to handle excavator impact velocities), and is supplied in sets of 4 or 8 (vs 2 for the front). The rear also undergoes an impact-cycle test that the front does not require, because the front is not subject to excavator loading.<\/p>\n<\/p><\/div>\n

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How does the piston accumulator (#31) work with the rear suspension?<\/h3>\n

On tandem-rear-axle trucks, the piston accumulator balances the load between the middle and rear axles in real time. When one axle encounters a bump (compressing its suspension) while the other is in a dip (extending its suspension), the accumulator transfers oil between the two circuits \u2014 keeping the axle loads equalised and preventing one axle from carrying a disproportionate share of the payload.<\/p>\n<\/p><\/div>\n

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How often do the rear struts need recharging?<\/h3>\n

With properly sealed accumulators, the gas charge holds for 6\u201318 months. Mining truck maintenance programs check suspension ride height daily (visual inspection) and measure gas pressure monthly. A rear strut that has lost charge will sit lower than its neighbours \u2014 visible to the maintenance crew during the pre-shift walk-around inspection. Browse telescopic cylinders<\/a> and industrial engineering cylinders<\/a>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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Related Categories<\/span><\/h2>\n
<\/p>\n
\n
\"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

\n
\"AWV\"<\/div>\n
\n
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 rear suspension cylinder \u2014 the hydropneumatic strut at each rear wheel that carries the payload-bearing rear axle. While the front suspension (#29) sees a near-constant load, the rear suspension faces the most extreme load variation in the mobile machinery range: from the empty body weight (60\u2013200 tonnes) to full payload (260\u2013600 tonnes) \u2014 a swing of up to 10:1 \u2014 plus the impact shock of excavator buckets dumping 30\u201350 tonne loads directly onto the body. Bore 150\u2013450 mm, stroke \u2264400 mm, 38 MPa. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2598,"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-2597","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\/hi\/wp-json\/wp\/v2\/product\/2597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/comments?post=2597"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/media\/2598"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/media?parent=2597"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/product_brand?post=2597"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/product_cat?post=2597"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/hi\/wp-json\/wp\/v2\/product_tag?post=2597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}