{"id":3106,"date":"2026-07-06T03:00:04","date_gmt":"2026-07-06T03:00:04","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/truck-crane-pin-cylinder-ep-hcyy11112015-model\/"},"modified":"2026-07-06T03:00:16","modified_gmt":"2026-07-06T03:00:16","slug":"truck-crane-pin-cylinder-ep-hcyy11112015-model","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/zh\/product\/truck-crane-pin-cylinder-ep-hcyy11112015-model\/","title":{"rendered":"Truck Crane Pin Cylinder | EP-HCYY11112015 Model"},"content":{"rendered":"

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Mobile Machinery Hydraulic Cylinder<\/span><\/p>\n

Truck Crane Pin Cylinder
EP-HCYY11112015 \u00b7 \u03a680mm \u00b7 Stroke 225mm \u00b7 20 MPa \u00b7 18 kg<\/span><\/h2>\n

The cylinder that locks and unlocks the telescoping boom sections. During boom extension, the pin cylinder inserts locking pins into alignment holes \u2014 mechanically connecting adjacent boom sections so they move as a single structural member. During retraction, the pin cylinder retracts the pins, releasing the sections for sequential telescoping.<\/p>\n

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\u03a680<\/span>Bore<\/span><\/div>\n
225mm<\/span>Stroke<\/span><\/div>\n
20 MPa<\/span>Working Pressure<\/span><\/div>\n
30 MPa<\/span>Max Pressure<\/span><\/div>\n
18 kg<\/span>Weight<\/span><\/div>\n<\/div>\n<\/section>\n
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Technical Specifications<\/h2>\n
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\"Truck\u25b2 Dimension Drawing<\/span><\/p>\n

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Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nTruck Crane Pin Cylinder<\/td>\n<\/tr>\n
Cylinder Model<\/td>\nEP-HCYY11112015<\/td>\n<\/tr>\n
Bore Diameter (D)<\/td>\n\u03a680 mm<\/td>\n<\/tr>\n
Rod Diameter (d)<\/td>\n\u03a640 mm<\/td>\n<\/tr>\n
Stroke (S)<\/td>\n225 mm<\/td>\n<\/tr>\n
Installation Distance (L)<\/td>\n440 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\n20 MPa<\/td>\n<\/tr>\n
Maximum Withstand Pressure<\/td>\n30 MPa<\/td>\n<\/tr>\n
Weight<\/td>\n18 kg<\/td>\n<\/tr>\n
Application<\/td>\nTruck-Mounted Crane<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
\"Truck\u25b2 Truck Crane Pin Cylinder | EP-HCYY11112015 Model<\/span><\/section>\n
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How Pin Cylinders Enable Boom Telescoping<\/h2>\n
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\"Truck<\/p>\n

A telescoping truck crane boom consists of multiple nested sections that slide inside each other. To extend the boom, one section must be pinned (locked) while the adjacent section extends hydraulically. The pin cylinder inserts a hardened steel pin through matching holes in adjacent sections \u2014 creating a temporary rigid connection.<\/p>\n

The 225 mm stroke provides enough travel to fully insert and retract the locking pin through the boom section wall thickness \u2014 typically two walls (inner and outer section) of 15\u201325 mm each, plus clearance. The \u03a680 bore at 20 MPa produces approximately 100 kN of insertion force \u2014 enough to drive the pin through under misalignment or contamination conditions.<\/p>\n

Pin cylinders must be extremely reliable \u2014 a pin that fails to insert leaves the boom section unlocked, which can lead to uncontrolled boom collapse under load. A pin that fails to retract prevents boom retraction for transport. Both failure modes are operationally critical. Browse the full mobile machinery hydraulic cylinder<\/a> range.<\/p>\n<\/section>\n

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Why Pin Reliability Is Non-Negotiable<\/h2>\n
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Pin Insertion Under Misalignment<\/strong><\/p>\n

Boom sections flex under load \u2014 the pin holes may not align perfectly. The 20 MPa pressure and \u03a680 bore provide enough force to drive the pin through slightly misaligned holes without jamming.<\/p>\n<\/div>\n

Contamination Resistance<\/strong><\/p>\n

Construction site dust, rust, and debris can accumulate in pin bores between operations. The cylinder must push through contamination reliably \u2014 every time, in every condition.<\/p>\n<\/div>\n

Position Feedback<\/strong><\/p>\n

Most truck cranes include proximity sensors on the pin cylinder to confirm pin insertion before allowing boom loading. The cylinder’s stroke must be precise and repeatable to trigger these sensors correctly.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"Truck<\/section>\n
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Key Advantages<\/h2>\n
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