{"id":1777,"date":"2026-09-08T05:34:02","date_gmt":"2026-09-08T05:34:02","guid":{"rendered":"https:\/\/metalite.net\/?post_type=product&#038;p=1777"},"modified":"2026-09-08T05:36:15","modified_gmt":"2026-09-08T05:36:15","slug":"crane-front-outrigger-extension-hydraulic-cylinder","status":"publish","type":"product","link":"https:\/\/metalite.net\/ary\/product\/crane-front-outrigger-extension-hydraulic-cylinder\/","title":{"rendered":"Crane Front Outrigger Extension Hydraulic Cylinder \u2014 HCYY11112024 (\u03a640\u00d7\u03a630, 1855mm Stroke)"},"content":{"rendered":"<div style=\"font-family: 'Segoe UI', Arial, sans-serif; color: #1a1a1a; max-width: 1100px; margin: 0 auto; padding: 0 16px; line-height: 1.7;\">\n<p><!-- SEO Keywords for this page: Core: crane front outrigger extension hydraulic cylinder Related: front outrigger beam cylinder, crane front stabilizer extension, long stroke outrigger cylinder, front leg extension actuator Long-tail: crane front outrigger extension hydraulic cylinder 40mm bore 1855mm stroke | long stroke thin rod outrigger extension cylinder crane | front stabilizer beam hydraulic cylinder manufacturer China --><\/p>\n<p>&nbsp;<\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 32px; margin-bottom: 48px; align-items: flex-start;\">\n<div style=\"flex: 1 1 340px; min-width: 280px;\">\n<p style=\"font-size: 13px; color: #666; margin: 0 0 8px 0; text-transform: uppercase; letter-spacing: 0.05em;\">Model: HCYY11112024<\/p>\n<h2 style=\"font-size: 28px; font-weight: bold; color: #0d2d52; margin: 0 0 16px 0; line-height: 1.3;\">Crane Front Outrigger Extension Hydraulic Cylinder<\/h2>\n<p style=\"font-size: 16px; color: #333; margin: 0 0 24px 0;\">The <strong>crane front outrigger extension hydraulic cylinder<\/strong> HCYY11112024 is purpose-designed for the front outrigger beam position on mobile cranes, where the beam geometry, available installation space, and required extension travel differ from the rear outrigger circuit. With a \u03a640mm bore, a 1,855mm stroke, and a working pressure of 12MPa, this cylinder delivers a stroke-to-bore ratio of over 46:1 \u2014 making rod buckling resistance and guide bearing design the dominant engineering considerations in its specification.<\/p>\n<div style=\"background: #f0f4fa; border-left: 4px solid #1a5fa8; padding: 16px 20px; border-radius: 0 6px 6px 0; margin-bottom: 24px;\">\n<p style=\"margin: 0; font-size: 15px; color: #1a5fa8; font-weight: 600;\">Key Specifications at a Glance<\/p>\n<ul style=\"margin: 10px 0 0 0; padding-left: 18px; color: #333; font-size: 14px;\">\n<li style=\"margin-bottom: 4px;\">Bore \u00d7 Rod \u00d7 Stroke: \u03a640 \u00d7 \u03a630 \u00d7 1855 mm<\/li>\n<li style=\"margin-bottom: 4px;\">Working Pressure: 12 MPa<\/li>\n<li style=\"margin-bottom: 4px;\">Max Withstand Pressure: 18 MPa<\/li>\n<li style=\"margin-bottom: 4px;\">Installation Distance: 2,057 mm<\/li>\n<li>Weight: 24 kg<\/li>\n<\/ul>\n<\/div>\n<p><a style=\"display: inline-block; background: #1a5fa8; color: #fff; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px;\" href=\"#contact-cta\">Request a Quote or Technical Drawing<\/a><\/p>\n<\/div>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1750\" src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112024-Crane-Front-Outrigger-Extension-Hydraulic-Cylinder-1024x1024.webp\" alt=\"HCYY11112024 Crane Front Outrigger Extension Hydraulic Cylinder\" width=\"600\" height=\"600\" title=\"\"><!-- Section 1: Product Overview --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Why the Front Outrigger Extension Cylinder Has a Different Specification to the Rear \u2014 and Why It Matters<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">On many mobile crane designs, the front and rear outrigger systems are not symmetrical. The crane&#8217;s centre of gravity, counterweight position, and boom pivot location mean that the front outrigger beams may need to extend further, retract into a different profile, or operate at a lower pressure circuit than the rear. The HCYY11112024 reflects this front-specific geometry: its 1,855mm stroke is notably longer than the 635mm stroke of the rear outrigger extension cylinder (HCYY11112026), and its 12MPa working pressure operates on a lower-pressure hydraulic circuit than the main boom or jack circuits.<\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">The \u03a640mm bore at 12MPa generates approximately <strong>15 kN of push force<\/strong> \u2014 sufficient for extending a front outrigger beam whose beam weight and sliding friction are lower than a larger rear beam, due to the lighter structural requirements of the front outrigger position on this crane class. The engineering challenge is not generating adequate force; at these parameters, the force calculation is straightforward. The challenge is maintaining a \u03a630mm rod straight and buckling-free over a 1,855mm stroke \u2014 a slenderness ratio that requires careful attention to guide bearing design and mounting constraint conditions.<\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">At just 24kg, the HCYY11112024 is the lightest cylinder in the front\/rear outrigger group by a significant margin. This weight is consistent with its smaller bore and thinner walls, but it also means the cylinder must be handled carefully during installation and removal \u2014 lateral force applied to the rod during handling can cause permanent rod deflection that compromises seal life.<\/p>\n<p><!-- Installation Diagram --><\/p>\n<div style=\"background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px; margin: 32px 0;\">\n<p style=\"margin: 0 0 12px 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Installation Position Diagram \u2014 HCYY11112024 \/ 25 \/ 26 \/ 27 on Crane<\/p>\n<p><img decoding=\"async\" style=\"width: 100%; border-radius: 4px; display: block;\" src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112024-5-6-7-Crane-Hydraulic-Cylinder-Location-Diagram-scaled.webp\" alt=\"HCYY11112024 crane front outrigger extension hydraulic cylinder installation location diagram\" title=\"\"><\/p>\n<p style=\"margin: 12px 0 0 0; font-size: 13px; color: #666;\">Diagram showing the positions of the front outrigger extension cylinder (HCYY11112024), front outrigger jack cylinder (HCYY11112025), rear outrigger extension cylinder (HCYY11112026), and rear outrigger jack cylinder (HCYY11112027) within the crane chassis structure.<\/p>\n<\/div>\n<p><!-- Section 2: Technical Specs Table --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Full Technical Specifications for the Long Stroke Front Stabilizer Beam Hydraulic Cylinder<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 20px 0;\">The HCYY11112024 is unusual in this product family for its combination of small bore, low working pressure, and very long stroke. Each parameter has a specific reason \u2014 understanding them prevents specification errors when sourcing a replacement unit.<\/p>\n<div style=\"overflow-x: auto; margin-bottom: 28px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 14px; min-width: 600px;\">\n<thead>\n<tr style=\"background: #0d2d52; color: #fff;\">\n<th style=\"padding: 12px 14px; text-align: left; font-weight: 600;\">Parameter<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: 600;\">Value<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: 600;\">Engineering Significance<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Model<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">HCYY11112024<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Unique model identifier. Note the prefix differs slightly from the HCYY111-series \u2014 confirm model number on procurement documents to avoid ordering errors.<\/td>\n<\/tr>\n<tr style=\"background: #f7f9fc;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Specifications<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">\u03a640 \u00d7 \u03a630 \u00d7 1855 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Bore \u00d7 Rod \u00d7 Stroke. The \u03a630mm rod with a 1,855mm stroke gives a slenderness ratio demanding careful buckling analysis. Both ends are constrained (pin-pinned mounting), which halves the effective buckling length compared to a cantilevered rod.<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Working Pressure<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">12 MPa<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">The lowest working pressure in this cylinder series. At \u03a640mm bore (effective area \u2248 1,257 mm\u00b2), this yields approximately 15 kN of push force \u2014 calibrated to the lighter front outrigger beam structure on this crane design.<\/td>\n<\/tr>\n<tr style=\"background: #f7f9fc;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Max Withstand Pressure<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">18 MPa<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">1.5\u00d7 working pressure safety factor \u2014 consistent with the outrigger extension cylinder series. Protects against end-of-travel pressure spikes when the beam reaches its travel stop at full extension.<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Stroke<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">1,855 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">The longest stroke in the front\/rear outrigger cylinder group. Sets the maximum front outrigger beam spread at the front axle position \u2014 a key variable in the crane&#8217;s front-sector rated lift capacity.<\/td>\n<\/tr>\n<tr style=\"background: #f7f9fc;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Installation Distance<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2;\">2,057 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Pin-to-pin retracted length of 2,057mm \u2014 the longest installation distance in this cylinder group. Confirms this cylinder spans a significant portion of the front outrigger beam even when fully retracted.<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; font-weight: 600; color: #0d2d52;\">Weight<\/td>\n<td style=\"padding: 11px 14px;\">24 kg<\/td>\n<td style=\"padding: 11px 14px; color: #555;\">Lightest cylinder in the front\/rear outrigger group. Single-person installation is possible but two-person handling is recommended to avoid lateral rod loading during assembly \u2014 critical for a long thin rod that is sensitive to permanent set.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><!-- CAD Image --><\/p>\n<div style=\"background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px; margin: 32px 0;\">\n<p style=\"margin: 0 0 12px 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">HCYY11112024 CAD Drawing Reference<\/p>\n<p><img decoding=\"async\" style=\"width: 100%; border-radius: 4px; display: block;\" src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112024-Crane-Front-Outrigger-Extension-Hydraulic-CylinderCAD.webp\" alt=\"HCYY11112024 crane front outrigger extension hydraulic cylinder CAD technical drawing\" title=\"\"><\/p>\n<p style=\"margin: 12px 0 0 0; font-size: 13px; color: #666;\">Full-dimension CAD drawing available in DXF and PDF format. Provide your crane model and outrigger position details to receive the dimensional verification package.<\/p>\n<p><!-- Section 3: Rod Buckling Deep Dive --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Rod Buckling Analysis for Long Stroke Outrigger Extension Cylinders: Why \u03a630mm Over 1,855mm Is Engineered, Not Oversized<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">A \u03a630mm rod spanning 1,855mm under compressive load is the parameter that draws the most engineering scrutiny on this cylinder. At first glance it appears slender \u2014 and it is, by the standards of a pressurised cylinder rod. Understanding why this configuration is both deliberate and structurally sound requires examining how buckling analysis is applied to guided cylinder rods.<\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">The Euler critical buckling load for a slender column is governed by the effective length, which depends on the end constraint conditions. For a hydraulic cylinder rod mounted pin-pin at both ends (clevis or spherical eye at the rod end, trunnion or clevis at the head end), the effective buckling length is the full rod extension length. For the HCYY11112024, this is the stroke length plus the rod length inside the cylinder at full extension \u2014 approximately equal to the installation distance of 2,057mm.<\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">At 12MPa working pressure on a \u03a640mm bore, the maximum compressive load on the rod is approximately 15 kN. Applying Euler&#8217;s formula to a \u03a630mm solid steel rod (second moment of area \u2248 39,761 mm\u2074, E = 210 GPa) with an effective length of 2,057mm and pin-pin end conditions gives a critical buckling load of approximately <strong>19.5 kN<\/strong> \u2014 providing a buckling safety factor of approximately 1.3\u00d7 above the maximum hydraulic thrust. For an outrigger extension cylinder where the beam guides the rod laterally inside the box section, this safety factor is considered appropriate \u2014 the beam itself provides additional lateral support to the cylinder and rod system that Euler&#8217;s free-column calculation does not account for.<\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">The key practical implication: this cylinder must always be installed with both ends correctly pinned and with the rod guided by the outrigger beam structure. Operating it in a configuration where the rod extends freely without lateral beam guidance \u2014 for example, during bench testing outside the beam \u2014 creates a buckling risk at working pressure that does not exist during normal crane operation.<\/p>\n<p><!-- Section 4: Front vs Rear Differences --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Front vs Rear Outrigger Extension Cylinders: Key Differences That Prevent Cross-Fitting Errors<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">The front outrigger extension cylinder (HCYY11112024) and the rear outrigger extension cylinder (HCYY11112026) share the same bore and pressure ratings, but differ substantially in stroke and installation distance. This table clarifies the differences that matter most for procurement:<\/p>\n<div style=\"overflow-x: auto; margin-bottom: 28px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px;\">\n<thead>\n<tr style=\"background: #0d2d52; color: #fff;\">\n<th style=\"padding: 12px 14px; text-align: left; font-weight: 600;\">Parameter<\/th>\n<th style=\"padding: 12px 14px; text-align: center; font-weight: 600;\">Front (HCYY11112024)<\/th>\n<th style=\"padding: 12px 14px; text-align: center; font-weight: 600;\">Rear (HCYY11112026)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Bore \u00d7 Rod<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">\u03a640 \u00d7 \u03a630<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">\u03a640 \u00d7 \u03a625<\/td>\n<\/tr>\n<tr style=\"background: #f7f9fc;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Stroke<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">1,855 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">635 mm<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Installation Distance<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">2,057 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">840 mm<\/td>\n<\/tr>\n<tr style=\"background: #f7f9fc;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; font-weight: 600; color: #0d2d52;\">Working Pressure<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">12 MPa<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; text-align: center;\">12 MPa<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; font-weight: 600; color: #0d2d52;\">Weight<\/td>\n<td style=\"padding: 11px 14px; text-align: center;\">24 kg<\/td>\n<td style=\"padding: 11px 14px; text-align: center;\">9 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"font-size: 14px; color: #555; margin: 0 0 20px 0; font-style: italic;\">The front cylinder&#8217;s stroke is nearly 3\u00d7 the rear&#8217;s. Fitting a rear cylinder in a front position results in insufficient outrigger spread \u2014 a load chart violation that may not be immediately obvious to the crane operator.<\/p>\n<p><!-- Section 5: Applications --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Typical Applications for Front Leg Extension Actuators on Mobile and Truck-Mounted Cranes<\/h2>\n<ul style=\"padding-left: 20px; color: #333; font-size: 15px; margin: 0 0 20px 0;\">\n<li style=\"margin-bottom: 10px;\"><strong>Truck-mounted cranes with asymmetric outrigger geometry:<\/strong> Where the front outrigger beams extend further than the rear to compensate for boom overhang and front-heavy load moment. The 1,855mm stroke is sized for this wider front spread requirement.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Telescopic boom cranes, 25t\u201380t class:<\/strong> Front outrigger spread is a primary variable in the front-sector load chart. A cylinder that cannot achieve full stroke reduces the rated front-sector capacity, creating an invisible de-rating that operators may not identify without measurement.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Cranes with H-frame front outrigger layout:<\/strong> Where two front extension cylinders work in parallel and must extend symmetrically to avoid chassis twist during deployment.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>OEM crane manufacturing:<\/strong> First-fit supply for new crane builds requiring confirmed dimensional accuracy and material certification for production line assembly.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Fleet maintenance and MRO:<\/strong> Replacement of cylinders with bent rods, scored bores, or failed seals. Given the slender rod dimensions, bent rod replacement is more common in this cylinder size than in larger-bore models \u2014 lateral handling damage during field maintenance is a frequent cause.<\/li>\n<\/ul>\n<p><!-- Section 6: Construction Details --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Construction Standards for Long-Stroke Small-Bore Front Outrigger Extension Cylinders<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">Small bore, long stroke cylinders present manufacturing challenges that larger-bore units do not: honing a \u03a640mm bore to consistent roundness over the full barrel length requires precision tooling, and chrome plating a \u03a630mm rod uniformly along its full length demands controlled bath chemistry and rack geometry. These are not trivial manufacturing tasks \u2014 the quality of execution here directly determines cylinder service life.<\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 28px;\">\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">Barrel Honing Precision<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The \u03a640mm bore is honed to Ra 0.2\u20130.4\u03bcm over the full barrel length. At this small diameter, maintaining cylindricity within tolerance over the long barrel length is more demanding than for large-bore cylinders. Dimensional verification at multiple points along the bore length is performed before acceptance.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">\u03a630mm Chrome Rod<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Hard chrome plated to 20\u201325\u03bcm on a ground substrate. At \u03a630mm diameter, rod straightness must be verified before and after plating \u2014 the residual stress introduced by chrome plating can induce slight bow in thin rods if the plating parameters are not controlled. Maximum allowable bow: 0.1mm per 1,000mm rod length.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">Guide Bearing Length<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The cylinder gland carries a bronze or composite guide bearing whose length is proportioned to the bore diameter and maximum side load. For long-stroke cylinders in guided beam applications, bearing length is increased beyond the minimum to reduce specific bearing pressure and extend the interval between guide wear and seal damage.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">Rod Seal Stack<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Polyurethane primary rod seal with PTFE backup ring and dual wiper seals. The dual wiper configuration is specified for outrigger cylinders where road debris and mud are regular contaminants. At \u03a630mm rod diameter, seal groove dimensions are tighter than larger bores \u2014 seal kits are model-specific and not interchangeable with other bore sizes.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">End Eye \/ Pin Interface<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Clevis or spherical bearing ends machined from forged steel, heat-treated at the pin contact surface. The spherical bearing option allows \u00b13\u20135\u00b0 misalignment to accommodate the slight angular shift as the outrigger beam extends and the cylinder attachment geometry changes through the stroke range.<\/p>\n<\/div>\n<div style=\"flex: 1 1 280px; background: #f7f9fc; border: 1px solid #dce6f0; border-radius: 6px; padding: 20px;\">\n<p style=\"margin: 0 0 8px 0; font-weight: bold; color: #0d2d52; font-size: 15px;\">Pressure Testing<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Tested at 18MPa (full maximum withstand pressure) for a minimum 5-minute hold at both full extension and full retraction. Due to the long stroke, the test rig must accommodate the 2,057mm installation distance at retraction \u2014 a logistical requirement that confirms test procedures match real installation geometry.<\/p>\n<\/div>\n<\/div>\n<p><!-- Section 7: Ordering Guidance --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Ordering Checklist for Crane Front Outrigger Extension Cylinder Procurement<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">Given the unique combination of long stroke and small bore in this cylinder, dimensional verification before ordering is especially important. Confirm the following before placing an order:<\/p>\n<ul style=\"padding-left: 20px; color: #333; font-size: 15px; margin: 0 0 20px 0;\">\n<li style=\"margin-bottom: 10px;\"><strong>Confirm this is the front (not rear) outrigger position:<\/strong> The front cylinder (HCYY11112024) has a 1,855mm stroke and 2,057mm installation distance. The rear (HCYY11112026) has a 635mm stroke and 840mm installation distance. These are not interchangeable.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Installation distance at full retraction (2,057mm):<\/strong> Measure the existing cylinder pin-centre to pin-centre with the beam fully retracted and the cylinder at full retraction. This is the parameter that determines whether the replacement unit will fit within the beam&#8217;s stowed envelope.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Pin bore diameters and eye style:<\/strong> Clevis or spherical bearing ends, pin diameter at head end and rod end. On a \u03a630mm rod, pin eye geometry is small \u2014 confirm dimensions carefully to ensure pin clearance is adequate without excessive play.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Port specification:<\/strong> Thread type (SAE\/BSP\/metric) and port location. On a long-stroke cylinder, hose length and routing inside the beam section are affected by port position \u2014 confirm with reference to your original cylinder&#8217;s port layout.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Crane make, model, and year:<\/strong> Helps cross-reference known fitment data and catches cases where the same crane model has different cylinder specifications across production years.<\/li>\n<\/ul>\n<\/div>\n<p><!-- FAQ --><\/p>\n<h2 style=\"font-size: 22px; font-weight: bold; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Frequently Asked Questions \u2014 HCYY11112024 Crane Front Outrigger Extension Hydraulic Cylinder<\/h2>\n<div style=\"margin-bottom: 16px; border: 1px solid #dce6f0; border-radius: 6px; overflow: hidden;\">\n<div style=\"background: #f0f4fa; padding: 14px 18px;\">\n<p style=\"margin: 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Q: Can I use the rear outrigger extension cylinder (HCYY11112026) as a temporary replacement for the front?<\/p>\n<\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">No. The rear cylinder has a 635mm stroke and 840mm installation distance \u2014 fitting it in the front position means the front outrigger beam cannot extend to its rated spread width. Operating the crane with under-extended front outriggers reduces rated front-sector lift capacity, may violate the crane&#8217;s load chart, and is a safety non-compliance. Always use the correct position-specific cylinder.<\/p>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 16px; border: 1px solid #dce6f0; border-radius: 6px; overflow: hidden;\">\n<div style=\"background: #f0f4fa; padding: 14px 18px;\">\n<p style=\"margin: 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Q: The rod on our cylinder appears slightly bent \u2014 can it be straightened?<\/p>\n<\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">A bent rod on a hard-chrome plated cylinder should not be straightened. Cold-straightening a chrome-plated rod causes micro-cracking in the chrome layer at the bend zone, which accelerates corrosion and seal wear at that point. The correct remedy is rod replacement or full cylinder replacement. Given the 24kg total weight of this cylinder, full replacement is generally more cost-effective than attempting rod repair.<\/p>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 16px; border: 1px solid #dce6f0; border-radius: 6px; overflow: hidden;\">\n<div style=\"background: #f0f4fa; padding: 14px 18px;\">\n<p style=\"margin: 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Q: What push force does this cylinder generate at 12MPa?<\/p>\n<\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">At 12MPa with a \u03a640mm bore (effective area \u2248 1,257 mm\u00b2), theoretical push force is approximately 15.1 kN. After seal friction losses, usable force is approximately 14.3\u201314.6 kN. Retraction force on the annular area (\u03a640mm bore minus \u03a630mm rod) is approximately 6.9 kN at 12MPa \u2014 adequate for retracting the beam under gravity assist with hydraulic retraction supplementing.<\/p>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 16px; border: 1px solid #dce6f0; border-radius: 6px; overflow: hidden;\">\n<div style=\"background: #f0f4fa; padding: 14px 18px;\">\n<p style=\"margin: 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Q: Is buckling a risk during normal crane operation?<\/p>\n<\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Not under normal operating conditions where the cylinder is correctly installed within the outrigger beam and both end pins are engaged. The beam structure provides lateral guidance to the cylinder and rod, reducing the effective unsupported length. Buckling risk exists only if the cylinder is pressurised outside the beam \u2014 for example, during bench testing without the beam housing \u2014 which should never be done at working pressure with this model.<\/p>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 16px; border: 1px solid #dce6f0; border-radius: 6px; overflow: hidden;\">\n<div style=\"background: #f0f4fa; padding: 14px 18px;\">\n<p style=\"margin: 0; font-weight: 600; color: #0d2d52; font-size: 15px;\">Q: Are seal kits available separately for this cylinder?<\/p>\n<\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Yes. Seal kits for the HCYY11112024 are available and include all piston seals, rod seals, wiper seals, and O-rings required for a complete overhaul. Note that the \u03a630mm rod and \u03a640mm bore seal dimensions are specific to this model \u2014 do not attempt to use seal kits from the HCYY11112026 (rear cylinder, \u03a625mm rod), as the dimensions are different despite the same bore rating.<\/p>\n<\/div>\n<\/div>\n<p><!-- CTA Section --><\/p>\n<div id=\"contact-cta\" style=\"background: linear-gradient(135deg, #0d2d52 0%, #1a5fa8 100%); color: #fff; border-radius: 8px; padding: 36px 32px; margin: 48px 0 32px 0; text-align: center;\">\n<p style=\"font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 10px 0; opacity: 0.8;\">B2B Procurement &amp; OEM Supply<\/p>\n<h2 style=\"font-size: 26px; font-weight: bold; color: #fff; margin: 0 0 16px 0; border: none; padding: 0;\">Source the HCYY11112024 for Your Crane&#8217;s Front Outrigger System<\/h2>\n<p style=\"font-size: 15px; opacity: 0.9; max-width: 620px; margin: 0 auto 28px auto; line-height: 1.7;\">Provide your crane make and model, the existing cylinder&#8217;s retracted installation distance, and your required quantity. We will confirm dimensional fit, supply a CAD drawing for engineering review, and issue a formal quotation within 24\u201348 business hours. Seal kits and matched cylinder pairs are also available.<\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;\">\n<p><a style=\"display: inline-block; background: #fff; color: #0d2d52; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: bold; font-size: 15px;\" href=\"#contacts\">Request a Quote<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>HCYY11112024 front outrigger extension cylinder: \u03a640mm bore, 12MPa, 1855mm stroke, 2057mm installation distance, 24kg. CAD drawings &amp; OEM supply available.<\/p>","protected":false},"featured_media":1750,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[103,106,21],"product_tag":[],"class_list":["post-1777","product","type-product","status-publish","has-post-thumbnail","product_cat-engineering-vehicles-hydraulic-cylinders","product_cat-crane-hydraulic-cylinder","product_cat-hydraulic-cylinders","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/product\/1777","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/media\/1750"}],"wp:attachment":[{"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/media?parent=1777"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/product_brand?post=1777"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/product_cat?post=1777"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/metalite.net\/ary\/wp-json\/wp\/v2\/product_tag?post=1777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}