{"id":1776,"date":"2026-09-08T05:30:55","date_gmt":"2026-09-08T05:30:55","guid":{"rendered":"https:\/\/metalite.net\/?post_type=product&#038;p=1776"},"modified":"2026-09-08T05:30:55","modified_gmt":"2026-09-08T05:30:55","slug":"crane-outrigger-jack-hydraulic-cylinder-hcyy11112023-%cf%86140x%cf%86120-30mpa","status":"publish","type":"product","link":"https:\/\/metalite.net\/de_at\/product\/crane-outrigger-jack-hydraulic-cylinder-hcyy11112023-%cf%86140x%cf%86120-30mpa\/","title":{"rendered":"Crane Outrigger Jack Hydraulic Cylinder \u2014 HCYY11112023 (\u03a6140\u00d7\u03a6120, 30MPa)"},"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:\n    Core: crane outrigger jack hydraulic cylinder\n    Related: crane vertical jack cylinder, hydraulic outrigger pad cylinder, crane levelling cylinder, crane stabilizer jack\n    Long-tail: crane outrigger jack hydraulic cylinder 140mm bore 30MPa | vertical jack cylinder for mobile crane outrigger | hydraulic jack cylinder crane stabilizer pad manufacturer\n  --><\/p>\n<p>  <!-- Product Hero Section --><\/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      <img decoding=\"async\"\n        src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112023-Crane-Outrigger-Jack-Hydraulic-Cylinder.webp\"\n        alt=\"HCYY11112023 Crane Outrigger Jack Hydraulic Cylinder \u2013 \u03a6140 bore, 30MPa, 640mm stroke\"\n        style=\"width: 100%; border-radius: 6px; display: block;\"\n        loading=\"lazy\"\n      \/><\/p>\n<div style=\"display: flex; gap: 12px; margin-top: 12px;\">\n        <img decoding=\"async\"\n          src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCY11112023.webp\"\n          alt=\"HCYY11112023 outrigger jack cylinder side view\"\n          style=\"width: 48%; border-radius: 4px; display: block;\"\n          loading=\"lazy\"\n        \/><br \/>\n        <img decoding=\"async\"\n          src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112023-Crane-Outrigger-Jack-Hydraulic-Cylinder-CAD.webp\"\n          alt=\"HCYY11112023 outrigger jack hydraulic cylinder CAD drawing\"\n          style=\"width: 48%; border-radius: 4px; display: block;\"\n          loading=\"lazy\"\n        \/>\n      <\/div>\n<\/p><\/div>\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: HCYY11112023<\/p>\n<h2 style=\"font-size: 28px; font-weight: 700; color: #0d2d52; margin: 0 0 16px 0; line-height: 1.3;\">Crane Outrigger Jack Hydraulic Cylinder<\/h2>\n<p style=\"font-size: 16px; color: #333; margin: 0 0 24px 0;\">\n        The <strong>crane outrigger jack hydraulic cylinder<\/strong> HCYY11112023 is the vertical actuator that drives the outrigger pad into the ground, lifts the crane chassis clear of its suspension, and holds the entire loaded structure stationary throughout the lift cycle. With a \u03a6140mm bore, a 640mm stroke, and the highest working pressure in this outrigger series at 30MPa, this cylinder operates under sustained compressive load \u2014 not just during deployment, but for the entire duration of every crane operation.\n      <\/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: \u03a6140 \u00d7 \u03a6120 \u00d7 640 mm<\/li>\n<li style=\"margin-bottom: 4px;\">Working Pressure: 30 MPa<\/li>\n<li style=\"margin-bottom: 4px;\">Max Withstand Pressure: 40 MPa<\/li>\n<li style=\"margin-bottom: 4px;\">Installation Distance: 983 mm<\/li>\n<li>Weight: 123 kg<\/li>\n<\/ul><\/div>\n<p>      <a href=\"#contact-cta\" style=\"display: inline-block; background: #1a5fa8; color: #fff; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px;\">Request a Quote or Technical Drawing<\/a>\n    <\/div>\n<\/p><\/div>\n<p>  <!-- Section 1: Product Overview --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">What the Vertical Jack Cylinder for Crane Outrigger Actually Carries During a Lift<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The outrigger extension cylinder (HCYY11112022) deploys the beam horizontally. The outrigger jack cylinder does the structurally critical work that follows: it extends vertically downward to press the outrigger pad against the ground, continues extending until the crane&#8217;s tyres are lifted clear of the surface, and then holds that position \u2014 under the combined weight of the crane chassis, counterweight, boom assembly, and suspended load \u2014 for as long as the lift takes.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    This sustained static load under working pressure is what differentiates the jack cylinder&#8217;s duty from the extension cylinder&#8217;s duty. The extension cylinder cycles once to deploy and once to retract \u2014 its working time is measured in seconds per shift. The jack cylinder extends once, then holds position under full load pressure for minutes or hours depending on the lift operation. Seal integrity under prolonged static pressure loading is the primary engineering challenge in outrigger jack cylinder design.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    At 30MPa working pressure across a \u03a6140mm bore, the HCYY11112023 generates approximately <strong>462 kN of vertical push force<\/strong> \u2014 approximately 47 tonnes-force per jack cylinder. With four jack cylinders deployed simultaneously, the total vertical support capacity reaches approximately 185 tonnes, sufficient for cranes in the 50\u2013160 tonne class depending on chassis geometry and load distribution. The 40MPa maximum withstand pressure \u2014 a 1.33\u00d7 safety factor over rated working pressure \u2014 ensures the cylinder barrel and end closures remain structurally sound under the ground reaction force peaks that occur on uneven or compressible ground surfaces.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The \u03a6120mm rod diameter relative to the \u03a6140mm bore gives a rod-to-bore ratio of 86% \u2014 among the highest of any cylinder in this product range. This ratio reflects the compressive loading reality: a jack cylinder rod is essentially a vertical column in compression, and its buckling resistance must be sized for the worst-case condition where the crane is tilted on uneven ground and the jack load is not perfectly axial.\n  <\/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 HCYY11112021 \/ 22 \/ 23 on Crane<\/p>\n<p>    <img decoding=\"async\"\n      src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112021-2-3-Crane-Hydraulic-Cylinder-Location-Diagram-scaled.webp\"\n      alt=\"HCYY11112023 crane outrigger jack hydraulic cylinder installation location diagram\"\n      style=\"width: 100%; border-radius: 4px; display: block;\"\n      loading=\"lazy\"\n    \/><\/p>\n<p style=\"margin: 12px 0 0 0; font-size: 13px; color: #666;\">Diagram showing the vertical mounting position of the outrigger jack cylinder (HCYY11112023) relative to the main boom lift cylinder (HCYY11112021) and outrigger extension cylinder (HCYY11112022) within the crane structure.<\/p>\n<\/p><\/div>\n<p>  <!-- Section 2: Technical Specs Table --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Full Technical Specifications for the HCYY11112023 Hydraulic Jack Cylinder for Crane Stabilizer Pad<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 20px 0;\">\n    The specification of a jack cylinder must be read differently from a motion-generating cylinder. Parameters like bore area, working pressure, and rod-to-bore ratio carry particular weight because the cylinder spends most of its life holding a static load, not moving.\n  <\/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;\">HCYY11112023<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Unique product identifier for procurement and MRO spare part orders.<\/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;\">\u03a6140 \u00d7 \u03a6120 \u00d7 640 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Bore \u00d7 Rod \u00d7 Stroke. The \u03a6120mm rod is 86% of bore diameter \u2014 the highest rod-to-bore ratio in the outrigger cylinder set, reflecting compressive column loading demands.<\/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;\">30 MPa<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Highest working pressure in the outrigger series. At \u03a6140mm bore (effective area \u2248 15,394 mm\u00b2), this produces approximately 462 kN vertical push force \u2014 approximately 47 tonnes-force per jack position.<\/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;\">40 MPa<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">The highest proof pressure in this cylinder series. Provides structural margin against dynamic ground reaction spikes on compressible or uneven surfaces during lift operations.<\/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;\">640 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Vertical travel distance from pad contact with ground to maximum chassis lift height. Determines the maximum ground clearance achievable and the maximum terrain height variation the crane can compensate for during levelling.<\/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;\">983 mm<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #e0e8f2; color: #555;\">Pin-to-pin retracted length. Sets the vertical packaging envelope within the outrigger box beam and determines the available space for internal hose routing.<\/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;\">123 kg<\/td>\n<td style=\"padding: 11px 14px; color: #555;\">Consistent with the structural requirements of a \u03a6140mm bore cylinder carrying sustained 30MPa load. Heavier than the extension cylinder (48kg) due to increased wall thickness requirements at higher working pressure.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>  <!-- Section 3: 30MPa + 40MPa Safety --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Why the 30MPa Working Pressure and 40MPa Withstand Rating Define Safe Crane Levelling Operations<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    Among the seven crane hydraulic cylinders in this series, the HCYY11112023 carries the highest working pressure at 30MPa and the highest proof test pressure at 40MPa. This is not coincidental \u2014 it reflects the load conditions that an outrigger jack cylinder uniquely faces.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    When a crane is set up on ground that is not perfectly flat, the four jack cylinders do not share the load equally. Ground settlement under one pad, a rock under another, or a subtle slope in the terrain means that two or even one jack cylinder may be carrying a disproportionately large fraction of the total crane weight. In the worst case \u2014 one pad settling on soft ground while the crane is mid-lift \u2014 the remaining jack cylinders must absorb the redistributed load. The 30MPa working pressure rating accounts for these load redistribution scenarios rather than assuming perfectly equal load sharing across all four jacks.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The 40MPa maximum withstand pressure \u2014 a 33% margin above working pressure \u2014 specifically addresses the ground reaction force spikes that occur when a pad settles suddenly into soft ground, transferring load abruptly to the adjacent jacks. A cylinder rated only to its working pressure with no proof margin would be structurally at risk under these transient overload conditions. The 40MPa rating means the barrel wall, welds, and end closure threads have been designed, manufactured, and tested to sustain that pressure without permanent deformation.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The 640mm stroke provides adequate height adjustment range for most civil construction and industrial lift scenarios, while keeping the retracted installation distance (983mm) manageable within the vertical space available in the outrigger beam&#8217;s lower section.\n  <\/p>\n<p>  <!-- Section 4: Static Hold & Drift --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Static Load Holding and Drift Prevention in Vertical Jack Cylinders for Mobile Crane Outrigger Systems<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The most safety-critical performance requirement for a crane outrigger jack cylinder is not its extension force or its cycle speed \u2014 it is its ability to hold position without drift under sustained load pressure when the control valve is in neutral.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    In a well-maintained jack cylinder, the piston seal and rod seal system prevents internal leakage past the piston (which would allow the cylinder to slowly retract under load) and external leakage past the rod seal (which would be visible as oil weeping around the rod). Either form of leakage in a loaded jack cylinder is a safety issue, not merely a maintenance inconvenience. Slow retraction under load means the crane chassis gradually descends, changing the boom geometry, load radius, and \u2014 critically \u2014 the load on the other three jack cylinders.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The HCYY11112023&#8217;s seal system is designed for sustained static load. The piston seal uses a configuration that generates higher sealing force under higher differential pressure \u2014 so the seal&#8217;s effectiveness actually improves as the load on the jack increases. This pressure-energised sealing behaviour is the correct approach for jack cylinder applications and is notably different from the seal configurations appropriate for motion-generating cylinders where low breakout friction is the priority.\n  <\/p>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    It is important to note that the cylinder&#8217;s internal seal system is the last line of defence against drift \u2014 the primary line of defence should always be the crane&#8217;s hydraulic lock valves (counterbalance valves or pilot-operated check valves fitted in the outrigger circuit). A cylinder with degraded seals relying on hydraulic lock valves alone for load holding is operating outside its intended safety architecture.\n  <\/p>\n<p>  <!-- Section 5: Applications --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Where Crane Stabilizer Jack Cylinders Are Deployed \u2014 Typical Use Cases and Operating Environments<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    The HCYY11112023 is applicable to any mobile crane that uses a vertical hydraulic jack cylinder at each outrigger corner. Typical deployment scenarios include:\n  <\/p>\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 (50t\u2013160t class):<\/strong> Four jack cylinders deploy simultaneously and must level the crane on variable ground. Load per jack in this class ranges from 30 to 80 tonnes depending on counterweight configuration and load radius.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>All-terrain cranes on construction sites:<\/strong> Ground conditions range from compacted gravel to soft fill \u2014 each surface type generates different dynamic ground reaction characteristics that the jack cylinder and its circuit must accommodate.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Industrial plant maintenance cranes:<\/strong> In steel mills, chemical plants, and power stations where cranes may remain deployed for extended periods (hours to days) during planned maintenance shutdowns. Sustained static load holding without drift is the primary requirement.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Bridge and infrastructure construction:<\/strong> Where cranes operate on temporary roadways, crane mats, or engineered fill where ground bearing capacity is calculated but dynamic settlement is still possible.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>OEM crane manufacturing:<\/strong> First-fit supply to crane builders requiring consistent dimensional and pressure-holding performance across production batches.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Fleet MRO:<\/strong> Replacement of jack cylinders showing signs of drift, external leakage, or physical damage to the rod caused by off-axis loading during setup on uneven ground.<\/li>\n<\/ul>\n<p>  <!-- Section 6: Construction Details --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Construction Standards That Support Long-Term Static Load Performance in Vertical Crane Jack Cylinders<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    For a jack cylinder that must hold a 40\u201380 tonne load without drift for hours at a time, material and manufacturing standards are not interchangeable with lower-grade alternatives. The following details define the build quality of the HCYY11112023.\n  <\/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: 700; color: #0d2d52; font-size: 15px;\">Cylinder Barrel Wall Thickness<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">At 30MPa working pressure with a \u03a6140mm bore, barrel wall thickness is calculated per Lam\u00e9&#8217;s equation with a burst safety factor applied. Material is seamless structural steel (20# or equivalent) with certified mechanical properties \u2014 yield strength and tensile strength are both verified on heat certificate, not assumed from material grade alone.<\/p>\n<\/p><\/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: 700; color: #0d2d52; font-size: 15px;\">\u03a6120mm Piston Rod<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The large-diameter rod \u2014 86% of bore \u2014 is hard chrome plated on 45# or 42CrMo steel. The 42CrMo option provides higher yield strength for applications where eccentric loading during crane setup creates bending moments in the rod. Rod straightness is verified along the full length post-machining: maximum runout 0.05mm per 300mm.<\/p>\n<\/p><\/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: 700; color: #0d2d52; font-size: 15px;\">Piston Seal Assembly<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">A pressure-energised seal configuration is used at the piston \u2014 as cylinder pressure increases under load, the seal contact force increases proportionally. This means the seal is at its most effective precisely when the load is at its highest, which is the correct response characteristic for a jack cylinder application.<\/p>\n<\/p><\/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: 700; color: #0d2d52; font-size: 15px;\">Gland and Rod Seal<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The rod seal gland is a precision-machined assembly with a primary polyurethane seal, backup PTFE ring, and heavy-duty wiper. At 30MPa, the gland thread engagement depth is sized to prevent thread pullout under the axial force generated by rod seal friction during extension \u2014 a calculation often overlooked in jack cylinder gland design.<\/p>\n<\/p><\/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: 700; color: #0d2d52; font-size: 15px;\">Outrigger Pad Interface<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The rod end spherical or flat pad interface allows angular articulation to accommodate ground surface irregularities without transmitting bending moment into the rod. The pad socket is heat-treated for wear resistance at the contact face, which sees very high local bearing stress from the crane&#8217;s point load onto the outrigger mat or ground surface.<\/p>\n<\/p><\/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: 700; color: #0d2d52; font-size: 15px;\">Pressure Testing Protocol<\/p>\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Each cylinder is tested at 40MPa \u2014 the full maximum withstand pressure \u2014 with a minimum 5-minute hold. The test must demonstrate zero internal leakage (no drift in extended position under pressure) and zero external leakage. Test records are retained and available on request for quality audit purposes.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p>  <!-- Section 7: Ordering Guidance --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Ordering and Procurement Checklist for Crane Outrigger Jack Cylinder Replacement or OEM Supply<\/h2>\n<p style=\"font-size: 15px; color: #333; margin: 0 0 16px 0;\">\n    Outrigger jack cylinders are safety-critical components. Before finalising a procurement order, confirm the following parameters to ensure dimensional and functional compatibility with your crane:\n  <\/p>\n<ul style=\"padding-left: 20px; color: #333; font-size: 15px; margin: 0 0 20px 0;\">\n<li style=\"margin-bottom: 10px;\"><strong>Installation distance at retraction (983mm):<\/strong> This is the most common source of fitment errors. Measure the existing cylinder pin-to-pin at full retraction \u2014 if the replacement cylinder is longer or shorter, the outrigger beam geometry and hose routing will be affected.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Pad interface type:<\/strong> Flat pad, spherical knuckle, or fixed eye rod end. The interface must allow adequate angular articulation to handle uneven ground without creating bending load in the rod.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Head end mounting:<\/strong> Trunnion, clevis, or flange mount at the cylinder head. Confirm bore diameter, pin width, and whether a spherical bearing is fitted in the pin eye.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Port position and specification:<\/strong> On a vertically-mounted jack cylinder, port position determines whether oil drains correctly on retraction and whether the hose connection creates any strain on the fitting. Specify port location (head end \/ rod end) and thread type.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Seal material:<\/strong> Standard polyurethane\/PTFE for mineral oil. Fire-resistant fluid applications require Viton (FKM) seals \u2014 specify fluid type at time of order.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Crane model, rated capacity, and outrigger position (front\/rear):<\/strong> Front and rear outrigger jack cylinders on the same crane may have different specifications \u2014 confirm which position you are sourcing for.<\/li>\n<\/ul>\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;\">HCYY11112023 CAD Drawing Reference<\/p>\n<p>    <img decoding=\"async\"\n      src=\"https:\/\/metalite.net\/wp-content\/uploads\/2026\/09\/HCYY11112023-Crane-Outrigger-Jack-Hydraulic-Cylinder-CAD.webp\"\n      alt=\"HCYY11112023 crane outrigger jack hydraulic cylinder CAD technical drawing\"\n      style=\"width: 100%; border-radius: 4px; display: block;\"\n      loading=\"lazy\"\n    \/><\/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 installation constraints to receive the dimensional verification package.<\/p>\n<\/p><\/div>\n<p>  <!-- FAQ --><\/p>\n<h2 style=\"font-size: 22px; font-weight: 700; color: #0d2d52; border-bottom: 2px solid #e0e8f2; padding-bottom: 10px; margin: 48px 0 20px 0;\">Frequently Asked Questions \u2014 HCYY11112023 Crane Outrigger Jack 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: One of our jack cylinders slowly retracts under load even when the control valve is in neutral \u2014 is this a cylinder failure?<\/p>\n<\/p><\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Slow retraction (drift) under static load in neutral position indicates either internal bypassing past the piston seal or a failed hydraulic lock valve (counterbalance valve or pilot-operated check valve) in the outrigger circuit. To isolate the cause: block the cylinder ports with blanking plugs and repressurize the rod-end port to working pressure \u2014 if the cylinder holds position with ports blocked, the drift source is in the circuit, not the cylinder. If the cylinder still drifts with ports blocked, the internal seal has failed and the cylinder requires resealing or replacement.<\/p>\n<\/p><\/div>\n<\/p><\/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 vertical push force does this cylinder generate at working pressure?<\/p>\n<\/p><\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">At 30MPa with a \u03a6140mm bore (effective area \u2248 15,394 mm\u00b2), the theoretical push force is approximately 461.8 kN \u2014 around 47.1 tonnes-force. After accounting for seal friction (typically 3\u20135%), usable push force is approximately 438\u2013447 kN. With four jack cylinders operating simultaneously, the total vertical support capacity reaches approximately 1,752\u20131,788 kN (approximately 179\u2013182 tonnes-force total), though real-world load distribution is never perfectly equal across all four positions.<\/p>\n<\/p><\/div>\n<\/p><\/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: Why is the rod-to-bore ratio so high (\u03a6120 rod in \u03a6140 bore) compared to the extension cylinder?<\/p>\n<\/p><\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The large rod diameter is driven by compressive column loading requirements. When a crane is set up on sloped ground, the jack cylinder rod is not perfectly vertical \u2014 it may be loaded at a small angle that introduces a bending component. A thin rod that is adequate for pure axial compression may fail by buckling or yielding under combined axial and bending load. The \u03a6120mm rod provides the second moment of area needed to resist these combined loads with an adequate safety margin. The high rod-to-bore ratio also means the retraction force is significantly lower than the extension force \u2014 appropriate for a jack that only needs to lower the crane under gravity assist.<\/p>\n<\/p><\/div>\n<\/p><\/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: Can front and rear outrigger jack cylinders on the same crane be different specifications?<\/p>\n<\/p><\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">Yes, on many crane designs the front and rear outrigger jack cylinders have different stroke requirements to accommodate differences in the chassis height above ground at the front and rear positions. This is why separate products exist for front (HCYY11112025) and rear (HCYY11112027) outrigger jacks in this product range. Always confirm which position you are procuring for before ordering \u2014 do not assume that one cylinder specification covers all four jack positions on a given crane.<\/p>\n<\/p><\/div>\n<\/p><\/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: Do you supply the outrigger pad that attaches to the rod end?<\/p>\n<\/p><\/div>\n<div style=\"background: #fff; padding: 14px 18px;\">\n<p style=\"margin: 0; font-size: 14px; color: #444;\">The outrigger pad (base plate or float) is typically a separate component supplied by the crane OEM and is not included with the cylinder as standard. The rod end of the HCYY11112023 is machined to accept the original pad interface geometry. If your application requires a specific pad interface dimension or articulation angle, specify this when ordering so the rod end can be machined accordingly. We can advise on standard pad interface configurations that are compatible with common crane chassis designs.<\/p>\n<\/p><\/div>\n<\/p><\/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 &#038; OEM Supply<\/p>\n<h2 style=\"font-size: 26px; font-weight: 700; color: #fff; margin: 0 0 16px 0; border: none; padding: 0;\">Specify or Source the HCYY11112023 for Your Crane Fleet<\/h2>\n<p style=\"font-size: 15px; opacity: 0.9; max-width: 620px; margin: 0 auto 28px auto; line-height: 1.7;\">\n      Provide your crane model, current jack cylinder measurements, operating fluid type, and required quantity. We will confirm compatibility, supply a CAD drawing for engineering sign-off, and issue a formal quotation within 24\u201348 business hours. Matched sets of four jack cylinders can be supplied from the same production batch.\n    <\/p>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;\">\n      <a href=\"\/de_at\/contact\/\" style=\"display: inline-block; background: #fff; color: #0d2d52; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 15px;\">Request a Quote<\/a><br \/>\n      <a href=\"\/de_at\/contact\/\" style=\"display: inline-block; background: transparent; color: #fff; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px; border: 2px solid rgba(255,255,255,0.6);\">Request CAD Drawing<\/a><br \/>\n      <a href=\"\/de_at\/contact\/\" style=\"display: inline-block; background: transparent; color: #fff; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px; border: 2px solid rgba(255,255,255,0.6);\">Bulk Order Enquiry<\/a>\n    <\/div>\n<\/p><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>HCYY11112023 outrigger jack cylinder: \u03a6140mm bore, 30MPa working \/ 40MPa withstand, 640mm stroke, 123kg. Static load holding, OEM supply. Request a quote.<\/p>","protected":false},"featured_media":1751,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[106],"product_tag":[],"class_list":["post-1776","product","type-product","status-publish","has-post-thumbnail","product_cat-crane-hydraulic-cylinder","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/product\/1776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/media\/1751"}],"wp:attachment":[{"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/media?parent=1776"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/product_brand?post=1776"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/product_cat?post=1776"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/metalite.net\/de_at\/wp-json\/wp\/v2\/product_tag?post=1776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}