{"id":2563,"date":"2026-07-01T06:03:16","date_gmt":"2026-07-01T06:03:16","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/aerial-work-platform-telescopic-cylinder\/"},"modified":"2026-07-01T06:03:25","modified_gmt":"2026-07-01T06:03:25","slug":"aerial-work-platform-telescopic-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/cs\/produkt\/aerial-work-platform-telescopic-cylinder\/","title":{"rendered":"Aerial Work Platform Telescopic Cylinder"},"content":{"rendered":"

<\/p>\n
\n \"Aerial<\/p>\n
\n Aerial Work Platform \u00b7 4th of 7<\/span><\/p>\n

Aerial Work Platform
Telescopic Cylinder<\/h2>\n

15 metres of reach \u2014 with workers aboard. The crane telescopic extends an empty boom. This cylinder extends a boom with people on it. Every jolt is a fall hazard. Every stage transition must be invisible to the worker at the tip.<\/p>\n

\n
45\u2013200mm<\/span>Bore<\/span><\/div>\n
\u226415,000mm<\/span>Multi-Stage Stroke<\/span><\/div>\n
30 MPa<\/span>Pressure<\/span><\/div>\n
2\u20134<\/span>Stages<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n
\n

Crane vs Platform Telescopic \u2014 Same Mechanics, Different Stakes<\/span><\/h2>\n
\n \"Aerial<\/p>\n

The mobile crane telescopic cylinder (#18) extends boom sections carrying steel loads \u2014 a jerky extension makes the load swing, but nobody falls. The aerial platform telescopic cylinder extends boom sections carrying human beings standing on a basket at the tip. A 10 mm jolt at the cylinder translates to a 30\u201380 mm lurch at the basket (amplified by the boom’s lever ratio). Workers lurch, lose balance, and risk falling from 30\u201340 metres.<\/p>\n<\/div>\n

This fundamental difference mandates internal cushions at both stroke ends of every stage, maximum extension speed limits per EN 280 and ANSI A92 (typically \u22640.4 m\/s at the basket tip), and hold-back counterbalance valves on the retraction port to prevent the boom from snapping back under its own weight during retraction.<\/p>\n

Korea Ever-Power manufactures the telescopic cylinder as the fourth of seven aerial work platform hydraulic cylinders<\/a> \u2014 with cushions, speed limits, and hold-back valves integrated into the multi-stage design.<\/p>\n<\/section>\n

\n

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>\nAerial Work Platform Telescopic Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nLinear telescopic boom extension with personnel aboard<\/td>\n<\/tr>\n
Bore<\/td>\n45 mm \u2013 200 mm<\/td>\n<\/tr>\n
Rod<\/td>\n32 mm \u2013 180 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 15,000 mm (2\u20134 stages)<\/td>\n<\/tr>\n
Max Pressure<\/td>\n30 MPa<\/td>\n<\/tr>\n
Application<\/td>\nTelescopic \/ articulating boom lift (20\u201360 m working height)<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 EN 280 \/ ANSI A92 compatible<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
\n
\n

Stage Transitions \u2014 The Moment Workers Notice a Bad Cylinder<\/h2>\n

A 4-stage telescopic cylinder has three internal stage transitions \u2014 moments when one stage reaches full extension and the next begins. On a poorly designed cylinder, each transition produces a noticeable thud and a brief pause as the hydraulic flow switches from the completed stage to the next. Workers at the basket feel a jolt, then a dead stop, then a restart. Three jolts during a single extension from retracted to fully extended.<\/p>\n

\n
\n Cushioned overlap \u2014 no jolt, no dead stop<\/strong><\/p>\n

Korea Ever-Power machines internal cushion sleeves at both ends of each stage \u2014 the ending stage decelerates gradually while the next stage begins extending. The overlap zone is 30\u201380 mm, during which both stages share the flow. The transition is imperceptible at the basket: the worker sees continuous, smooth extension without any dead stop or jolt.<\/p>\n<\/p><\/div>\n

\n Hold-back retraction \u2014 controlled boom return<\/strong><\/p>\n

When retracting, gravity pulls the outer boom sections inward \u2014 the cylinder must control this gravity-assisted retraction to prevent the sections from slamming shut. A counterbalance valve on each stage’s retract port meters the flow, ensuring smooth, speed-limited retraction regardless of boom angle or load. Contact Korea Ever-Power<\/a> for multi-stage specifications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\"Telescopic<\/section>\n
\n

Manufacturing Process<\/span><\/h2>\n
\n \"Korea<\/p>\n

Multi-stage construction: 2\u20134 nested stages achieving 15,000 mm total stroke from a retracted length of approximately 4,000\u20135,000 mm. Each stage bore is honed to Ra 0.2\u20130.4 \u00b5m; each outer diameter chrome-plated (sliding surface between stages), concentricity \u22640.1 mm TIR. Cushion sleeves machined at both ends of each stage. Inter-stage seals rated -30 \u00b0C to +80 \u00b0C.<\/p>\n<\/div>\n

Every stage is hydrostatic tested individually at 45 MPa. The complete multi-stage assembly is full-stroke tested for smooth extension, cushioned stage transitions, controlled retraction, and leak-free inter-stage sealing at all extension positions. Stage-transition jolt is measured at the rod tip \u2014 must fall below the EN 280 \/ ANSI A92 limit for personnel-carrying equipment.<\/p>\n<\/section>\n

\n

OEM & ODM<\/span><\/h2>\n
\n
\n
What You Provide<\/strong><\/div>\n
\n

Platform model, boom type (telescopic\/articulating), number of boom sections, total stroke requirement, extension and retraction speed limits, stage bore\/rod diameters, system pressure, cushion overlap specification, hold-back valve spec, EN 280\/ANSI A92 compliance, retracted length constraint, and boom section assembly drawing.<\/p>\n<\/div>\n<\/div>\n

\n
What the Factory Delivers<\/strong><\/div>\n
\n

Multi-stage telescopic cylinder with per-stage bore, rod, stroke, overlap, cushions, hold-back valve provisions, inter-stage chrome and seals, and mounting dimensions. Per-stage hydrostatic certificate + full-assembly functional test + stage-transition jolt measurement. Seal kits. Browse the mobile machinery cylinder family<\/a> and the Korea Ever-Power catalogue<\/a>.<\/p>\n<\/div>\n<\/div><\/div>\n<\/section>\n

\n

FAQ<\/span><\/h2>\n
\n
\n

How does the 15,000 mm stroke compare to the crane’s 22,000 mm (#18)?<\/h3>\n

The platform telescopic cylinder uses smaller bore (45\u2013200 vs 75\u2013360 mm) and lower pressure (30 vs 42 MPa) because platform loads (workers + tools \u2248 500 kg) are far lighter than crane boom assemblies (5\u201330 tonnes). The 15,000 mm stroke covers boom lifts up to 60 m working height. Internal cushions and speed limits \u2014 absent on the crane version \u2014 are mandatory here because people are aboard.<\/p>\n<\/div>\n

\n

Can workers feel the stage transition?<\/h3>\n

On a well-designed cylinder with properly tuned cushion overlap, the transition from one stage to the next is barely perceptible at the basket. Korea Ever-Power tunes the inter-stage cushion to match the platform’s specific boom mass and extension speed \u2014 so the stage changeover produces a smooth deceleration\/acceleration rather than a jolt.<\/p>\n<\/div>\n

\n

Is the telescopic cylinder used on scissor lifts too?<\/h3>\n

No \u2014 scissor lifts use single-stage cylinders that lift the scissor mechanism. The telescopic cylinder is exclusively for boom lifts (articulating and telescopic) where the boom sections extend horizontally to reach over or around obstacles. Browse telescopic cylinders<\/a> and forklift cylinders<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\n

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

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

\n
\"Forklift\"<\/div>\n
\n
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":"

Aerial work platform telescopic cylinder \u2014 the multi-stage hydraulic cylinder that extends the boom sections on telescopic and articulating boom lifts, reaching working heights of 20\u201360 metres with workers aboard. Stroke up to 15,000 mm (15 metres) across 2\u20134 nested stages. Unlike the crane telescopic cylinder (#18) which extends an unoccupied boom, every extension millimetre of this cylinder is felt by the workers standing on the platform basket at the tip. Cushioned stage transitions, speed-limited extension, and hold-back retraction valves are mandatory \u2014 not optional. Bore 45\u2013200 mm, 30 MPa. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2564,"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-2563","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\/cs\/wp-json\/wp\/v2\/product\/2563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/comments?post=2563"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/media\/2564"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/media?parent=2563"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/product_brand?post=2563"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/product_cat?post=2563"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/cs\/wp-json\/wp\/v2\/product_tag?post=2563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}