[{"data":1,"prerenderedAt":786},["ShallowReactive",2],{"catalog:meta":3,"guides:page:\u002Finjection-molding-machine-parts\u002Fclamp-cylinder:*":258,"guides:topics:clamp-cylinder::path,title,short,description,item":617,"diagram:id:clamp-cylinder":645,"catalog:parts:clamp-cylinder:MC-CC-01,MC-CC-02,MC-SB-07,MC-SB-08,MC-SB-10":752},{"categories":4,"machines":132,"zones":212,"totals":255},[5,35,59,122],{"id":6,"name":7,"slug":8,"description":9,"partCount":10,"subcategories":11},"EC","Electrical Components","electrical","Electrical systems and components for injection molding machines including heaters, thermocouples, servo motors, and controllers.",11,[12,17,22,27,31],{"id":13,"name":14,"slug":15,"partCount":16},"EC-CBC","Circuit Boards & Controllers","circuit-boards",4,{"id":18,"name":19,"slug":20,"partCount":21},"EC-CE","Connectors & Cables","connectors-cables",2,{"id":23,"name":24,"slug":25,"partCount":26},"EC-GEP","Servo Motors & Drives","servo-motors",1,{"id":28,"name":29,"slug":30,"partCount":21},"EC-HT","Heaters","heaters",{"id":32,"name":33,"slug":34,"partCount":21},"EC-SF","Safety Components","safety",{"id":36,"name":37,"slug":38,"description":39,"partCount":40,"subcategories":41},"HY","Hydraulic Components","hydraulic","Complete range of hydraulic system components including pumps, valves, motors, and pressure controls for injection molding machines.",14,[42,46,51,55],{"id":43,"name":44,"slug":45,"partCount":26},"HY-AU","Accumulators","accumulators",{"id":47,"name":48,"slug":49,"partCount":50},"HY-CV","Control Valves","control-valves",6,{"id":52,"name":53,"slug":54,"partCount":26},"HY-MO","Monitors & Gauges","monitors-gauges",{"id":56,"name":57,"slug":58,"partCount":50},"HY-PW","Pumps & Motors","pumps-motors",{"id":60,"name":61,"slug":62,"description":63,"partCount":64,"subcategories":65},"MC","Mechanical Components","mechanical","Mechanical parts and assemblies including barrels, screws, tie bars, bushings, platens, and clamping components.",42,[66,71,75,80,85,89,93,97,101,105,109,114,118],{"id":67,"name":68,"slug":69,"partCount":70},"MC-BC","Barrels & Cylinders","barrels-cylinders",5,{"id":72,"name":73,"slug":74,"partCount":16},"MC-SB","Screw Barrels & Seals","screws",{"id":76,"name":77,"slug":78,"partCount":79},"MC-TC","Tie Bars & Columns","tie-bars",7,{"id":81,"name":82,"slug":83,"partCount":84},"MC-GZ","Bushings & Guides","bushings-guides",8,{"id":86,"name":87,"slug":88,"partCount":26},"MC-PP","Platens","platens",{"id":90,"name":91,"slug":92,"partCount":70},"MC-TL","Toggle & Links","toggle-links",{"id":94,"name":95,"slug":96,"partCount":21},"MC-CC","Clamping Components","clamping",{"id":98,"name":99,"slug":100,"partCount":21},"MC-GMP","Tools & Accessories","tools-accessories",{"id":102,"name":103,"slug":104,"partCount":21},"MC-ES","End Caps & Plates","end-caps",{"id":106,"name":107,"slug":108,"partCount":26},"MC-SR","Seals & Rings","seals-rings",{"id":110,"name":111,"slug":112,"partCount":113},"MC-JM","Joints & Mounts","joints-mounts",3,{"id":115,"name":116,"slug":117,"partCount":26},"MC-SG","Safety Guards","safety-guards",{"id":119,"name":120,"slug":121,"partCount":26},"MC-CR","Clamping Mechanism","clamping-mechanism",{"id":123,"name":124,"slug":125,"description":126,"partCount":113,"subcategories":127},"O","Other Components","other","Additional components including filters, cooling systems, lubrication parts, and other auxiliary equipment.",[128],{"id":129,"name":130,"slug":131,"partCount":113},"O-TC","Filters & Cooling","filters-cooling",[133,143,161,172,180,188,194,200,205],{"id":134,"name":135,"slug":134,"series":136,"partCount":142},"haitian","Haitian International",[137,138,139,140,141],"Mars Series (MA)","Jupiter Series (JU)","Zhafir Venus Series (VE)","Zhafir Zeres Series (ZE)","Zhafir Jeres Series (JE)",68,{"id":144,"name":145,"slug":144,"series":146,"partCount":160},"yizumi","Yizumi",[147,148,149,150,151,152,153,154,155,156,157,158,159],"A6 Series","A5-EU Series","A5-N Series","SKIII Series","DP Series","D1 Series","FF Series","FF-M Series","P Series","CG-P Series","VM Series","SPET Series","LSR Series",12,{"id":162,"name":163,"slug":162,"series":164,"partCount":171},"chen-hsong","Chen Hsong",[165,166,167,168,169,170],"JETMASTER MK Series","JETMASTER SVP Series","SUPERMASTER Series","EASYMASTER Series","SPARK Series","JETMASTER C2 Series",10,{"id":173,"name":174,"slug":173,"series":175,"partCount":179},"tederic","Tederic",[176,177,178],"NEO Series","D Series (Two-Platen)","DE Series (All-Electric)",0,{"id":181,"name":182,"slug":181,"series":183,"partCount":179},"borch","Borch",[184,185,186,187],"BU Series (Two-Platen)","BS-III Series (Servo)","BE Series (All-Electric)","BM Series (Multi-color)",{"id":189,"name":190,"slug":189,"series":191,"partCount":179},"log-machine","LOG Machine",[192,193],"LOG-SE Series","LOG-EE Series (All-Electric)",{"id":195,"name":196,"slug":195,"series":197,"partCount":179},"donghua","Donghua",[198,199],"DH Series (Servo)","DH-TP Series (Two-Platen)",{"id":201,"name":202,"slug":201,"series":203,"partCount":179},"sunbun","Sunbun",[204],"Sunbun Servo Series",{"id":206,"name":207,"slug":206,"series":208,"partCount":179},"lijin","L.K. Machinery (Lijin)",[209,210,211],"POTENZA Series","FORZA Series (Two-Platen)","ELETTRICA Series (All-Electric)",[213,217,221,225,228,231,235,238,242,248,251],{"id":214,"number":26,"name":215,"role":216,"partCount":21},"clamp-cylinder","Clamping cylinder","The hydraulic cylinder behind the rear platen. It drives the crosshead that straightens the toggle links, which opens and closes the mold and builds the clamping force.",{"id":218,"number":21,"name":219,"role":220,"partCount":50},"toggle","Toggle mechanism","Links, pins and bushings between the rear and moving platens. They multiply the force of the clamping cylinder and lock the mold shut while plastic is injected.",{"id":222,"number":113,"name":223,"role":224,"partCount":113},"ejector","Ejector","A small cylinder behind the moving platen that pushes the ejector rods and plate forward to release the finished part from the mold.",{"id":78,"number":16,"name":226,"role":227,"partCount":40},"Tie bars & bushings","Four steel columns that join the platens, guide the moving platen and carry the clamping force. Tie bar nuts lock them in place; bushings guide the moving platen along them.",{"id":88,"number":70,"name":229,"role":230,"partCount":21},"Platens & mold plates","The fixed and moving platens carry the two halves of the mold; the rear platen anchors the toggle. Locating rings and clamping plates center and hold the mold.",{"id":232,"number":50,"name":233,"role":234,"partCount":50},"barrel-screw","Barrel, screw & nozzle","The screw turns inside the heated barrel to melt and mix the plastic, then moves forward to inject it through the nozzle into the mold. The screw tip and check ring stop melt from flowing back.",{"id":30,"number":79,"name":236,"role":237,"partCount":113},"Heater bands & sensors","Heater bands around the barrel and nozzle melt the plastic. Thermocouples measure each heating zone so the controller can hold the set temperature.",{"id":239,"number":84,"name":240,"role":241,"partCount":79},"injection-unit","Injection unit","Injection cylinders push the screw forward, the hydraulic (plasticizing) motor turns it, and the carriage moves the unit against the mold on its guide rails.",{"id":243,"number":244,"name":245,"role":246,"partCount":247},"hydraulics",9,"Hydraulic unit","The pump, motor, valves, accumulator, filters and oil cooler in the machine base. They supply and control the oil pressure for every movement of the machine.",16,{"id":8,"number":171,"name":249,"role":250,"partCount":244},"Electrical cabinet","The controller, I\u002FO and drive boards, servo drives, contactors and safety switches that run and protect the machine.",{"id":252,"number":10,"name":253,"role":254,"partCount":21},"feet","Machine feet","Leveling bolts and anti-vibration pads under the machine base that keep the machine level and stop vibration spreading to the floor.",{"parts":256,"subcategories":257},70,23,{"id":259,"title":260,"body":261,"description":590,"diagram":214,"extension":591,"faq":592,"item":608,"lastModified":609,"meta":610,"navigation":611,"order":608,"parts":608,"path":612,"seo":613,"seoTitle":614,"short":608,"stem":615,"__hash__":616},"guides\u002Finjection-molding-machine-parts\u002Fclamp-cylinder.md","Clamping cylinder of an injection molding machine",{"type":262,"value":263,"toc":573},"minimark",[264,268,273,276,279,312,326,330,335,343,347,354,358,371,375,382,386,394,398,410,414,424,428,435,439,484,497,501,504,524,531,535],[265,266,267],"p",{},"The clamping cylinder is the hydraulic cylinder that closes and opens the mold on an injection molding machine. On a toggle machine it pushes the crosshead, and the toggle links multiply its force into the full clamping force. On a direct hydraulic clamp, a larger cylinder (often called the main ram) applies the clamping force directly. In both cases it is a double-acting cylinder: a barrel closed by end caps, a piston with seals, a rod held on the piston by a nut, and a seal set where the rod leaves the cylinder. The numbered drawing above shows each part; this guide explains what each one does, how they fail and what to send for a replacement quote.",[269,270,272],"h2",{"id":271},"how-the-clamping-cylinder-works-in-the-cycle","How the clamping cylinder works in the cycle",[265,274,275],{},"A double-acting cylinder has an oil port at each end. Oil pumped into one chamber pushes the piston, while the oil in the other chamber returns to the tank through the valves. The rod takes up part of the piston area on the front side, so with the same pressure the cylinder pulls back with less force than it pushes, and with the same flow it moves back faster.",[265,277,278],{},"In each cycle the clamping cylinder goes through four stages:",[280,281,282,294,300,306],"ol",{},[283,284,285,289,290,293],"li",{},[286,287,288],"strong",{},"Mold close."," Oil enters the rear chamber and the piston moves forward. The controller runs a speed profile: a fast close, a slow-down before the mold halves touch, then a low-pressure ",[286,291,292],{},"mold protection"," stage, so that a part left in the mold stops the movement instead of being crushed.",[283,295,296,299],{},[286,297,298],{},"Clamp up."," On a toggle machine the cylinder straightens the links and the clamping force comes from the tie bars stretching. On a direct hydraulic clamp the pressure in the cylinder is raised until the set clamping force is reached.",[283,301,302,305],{},[286,303,304],{},"Injection and cooling."," The mold must stay locked. On a toggle machine the nearly straight links carry the load, so the cylinder only holds them in place; on a direct hydraulic clamp the cylinder holds the full pressure until the part has cooled.",[283,307,308,311],{},[286,309,310],{},"Mold open."," Oil enters the front chamber and pulls the piston back. The first movement has to break the mold open, then the platen travels fast and slows down before the open position, where ejection starts.",[265,313,314,315,320,321,325],{},"For how the toggle multiplies the cylinder force, see the ",[316,317,319],"a",{"href":318},"\u002Finjection-molding-machine-parts\u002Ftoggle\u002F","toggle mechanism guide"," and our article on the ",[316,322,324],{"href":323},"\u002Fblog\u002Ftoggle-clamping-system-explained\u002F","toggle clamping system",".",[269,327,329],{"id":328},"parts-of-the-clamping-cylinder","Parts of the clamping cylinder",[331,332,334],"h3",{"id":333},"cylinder-barrel-and-end-caps","Cylinder barrel and end caps",[265,336,337,338,342],{},"A thick-walled steel tube with a honed bore, closed at the rear by an end cap and at the front by the gland (front head) that the rod passes through. Oil reaches the two chambers through the ports on either side of the piston. The bore is the surface the piston seals run on, so scoring or corrosion inside it destroys new seals quickly. See the ",[316,339,341],{"href":340},"\u002Fparts\u002Fmc-cc-01\u002F","clamping cylinder"," we supply, which is built to the dimensions of each machine.",[331,344,346],{"id":345},"piston","Piston",[265,348,349,350,353],{},"The piston divides the barrel into two oil chambers. Pressure on one side moves it, and the rod with it, forward or back. Besides the seals it carries ",[286,351,352],{},"wear rings"," (guide rings) that keep it centered in the bore, so the steel never touches the barrel.",[331,355,357],{"id":356},"piston-seals-y-rings","Piston seals (Y-rings)",[265,359,360,361,365,366,370],{},"Y-rings in the piston grooves stop oil passing from one chamber to the other. They leak inside the cylinder, so a worn piston seal never shows as an oil drip: it shows as a cylinder that moves slowly, loses force or creeps. See ",[316,362,364],{"href":363},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fpiston-seals\u002F","piston seals"," for how they work and how to test for bypass, and the ",[316,367,369],{"href":368},"\u002Fparts\u002Fmc-sb-08\u002F","hydraulic cylinder seals and Y-rings"," we supply.",[331,372,374],{"id":373},"piston-rod-nut","Piston rod nut",[265,376,377,378,325],{},"The nut holds the piston on the threaded end of the rod and is locked so it cannot work loose. A loose nut lets the piston knock on the rod, which damages the seals and the threads. See the ",[316,379,381],{"href":380},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fpiston-rod-nut\u002F","piston rod nut guide",[331,383,385],{"id":384},"piston-rod","Piston rod",[265,387,388,389,393],{},"A ground, hard chrome-plated steel rod that carries the force out through the front head to the ",[316,390,392],{"href":391},"\u002Finjection-molding-machine-parts\u002Ftoggle\u002Fcrosshead\u002F","crosshead"," or the moving platen. Any scratch, dent or pitting on the chrome cuts the rod seals on every stroke, so the rod surface is checked every time the cylinder is opened.",[331,395,397],{"id":396},"rod-seals-and-wiper","Rod seals and wiper",[265,399,400,401,405,406,325],{},"The seal set in the front head: the rod seals keep the oil in, the wiper keeps dirt out, and a guide ring keeps the rod centered. These are the seals you can see leaking. See ",[316,402,404],{"href":403},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Frod-seals\u002F","rod seals and wipers"," and the ",[316,407,409],{"href":408},"\u002Fparts\u002Fmc-sb-07\u002F","piston rod seal set",[331,411,413],{"id":412},"auxiliary-cylinder","Auxiliary cylinder",[265,415,416,417,405,421,370],{},"A smaller cylinder used on some machines as a clamping booster or to drive the ejector. It is built and serviced like the main cylinder. See ",[316,418,420],{"href":419},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fauxiliary-cylinder\u002F","auxiliary cylinder",[316,422,420],{"href":423},"\u002Fparts\u002Fmc-cc-02\u002F",[331,425,427],{"id":426},"seal-kits","Seal kits",[265,429,430,431,325],{},"When a cylinder is opened, all its seals are normally replaced together as a kit: piston seals, wear rings, rod seals, wiper and the static O-rings. The step-by-step procedure is in ",[316,432,434],{"href":433},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fcylinder-seal-replacement\u002F","replacing cylinder seals",[269,436,438],{"id":437},"common-clamping-cylinder-problems","Common clamping cylinder problems",[440,441,442,448,454,460,466,472,478],"ul",{},[283,443,444,447],{},[286,445,446],{},"Oil on the rod or dripping from the front head",": worn rod seals or wiper, or a scored rod.",[283,449,450,453],{},[286,451,452],{},"Mold closes or opens more slowly"," at the same settings, or clamp-up takes longer: oil passing the piston seals, or a problem on the hydraulic side.",[283,455,456,459],{},[286,457,458],{},"Mold drifts or the cylinder creeps"," when its valve is in the neutral position: piston seal bypass or valve leakage.",[283,461,462,465],{},[286,463,464],{},"Not enough force to break a sticking mold open",": oil passing the piston seals, or low pressure from the hydraulic side.",[283,467,468,471],{},[286,469,470],{},"Knocking at the end of a stroke",": a speed profile that does not slow down in time, or a loose rod nut.",[283,473,474,477],{},[286,475,476],{},"Oil running hotter than usual",": oil leaking across a piston or a valve turns pressure into heat.",[283,479,480,483],{},[286,481,482],{},"Scored, pitted or flaking chrome"," on the rod.",[265,485,486,487,491,492,496],{},"Many of these symptoms also come from the hydraulic system: a worn pump, a leaking directional or proportional valve, or a relief valve set too low. Check the pressure before you open the cylinder. Our article on ",[316,488,490],{"href":489},"\u002Fblog\u002Ftroubleshooting-hydraulic-pressure-loss\u002F","troubleshooting hydraulic pressure loss"," gives a step-by-step test, and the ",[316,493,495],{"href":494},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002F","hydraulic system guide"," explains the rest of the circuit.",[269,498,500],{"id":499},"what-to-send-for-a-replacement-quote","What to send for a replacement quote",[265,502,503],{},"To quote a clamping cylinder, an auxiliary cylinder, a seal kit or a rod nut, send:",[280,505,506,509,512,515,518,521],{},[283,507,508],{},"The machine brand, model and serial number, and its clamping force.",[283,510,511],{},"Which cylinder it is: the main clamping cylinder, an auxiliary cylinder, or another cylinder on the machine.",[283,513,514],{},"The bore, the rod diameter and the stroke.",[283,516,517],{},"For seals: the groove dimensions, or the codes printed on the old seals, or the OEM seal kit number. Photos of the old seals laid out in order help.",[283,519,520],{},"For a complete cylinder: the mounting type and its dimensions, the port sizes and positions, the rod end, and photos of the cylinder and its nameplate.",[283,522,523],{},"For a rod nut: the thread size and pitch, the outside dimensions and how it is locked.",[265,525,526,530],{},[316,527,529],{"href":528},"\u002Frequest-quote\u002F","Request a quote"," or send the details on WhatsApp.",[269,532,534],{"id":533},"maintenance-that-makes-the-cylinder-last","Maintenance that makes the cylinder last",[440,536,537,540,543,546,563,570],{},[283,538,539],{},"Look at the rod and the front head every day for oil. A small leak caught early is a seal kit; a leak left running scores the rod.",[283,541,542],{},"Keep the rod clean, and protect it from impacts and weld spatter during mold changes and repairs.",[283,544,545],{},"Set the speed profile so the cylinder slows down before the end of each stroke.",[283,547,548,549,553,554,558,559,325],{},"Keep the oil clean, dry and at its working temperature: see ",[316,550,552],{"href":551},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-oil\u002F","hydraulic oil",", the ",[316,555,557],{"href":556},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-filter\u002F","oil filter"," and ",[316,560,562],{"href":561},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-temperature\u002F","oil temperature",[283,564,565,566,325],{},"On a toggle machine, keep the toggle lubricated and the crosshead guides in good condition. Side load on the rod wears the guide ring and the rod seals on one side. See ",[316,567,569],{"href":568},"\u002Finjection-molding-machine-parts\u002Ftoggle\u002Ftoggle-lubrication\u002F","toggle lubrication",[283,571,572],{},"When the cylinder is opened, replace the whole seal kit, measure the bore and the rod, and check the rod nut and its locking before reassembly.",{"title":574,"searchDepth":21,"depth":21,"links":575},"",[576,577,587,588,589],{"id":271,"depth":21,"text":272},{"id":328,"depth":21,"text":329,"children":578},[579,580,581,582,583,584,585,586],{"id":333,"depth":113,"text":334},{"id":345,"depth":113,"text":346},{"id":356,"depth":113,"text":357},{"id":373,"depth":113,"text":374},{"id":384,"depth":113,"text":385},{"id":396,"depth":113,"text":397},{"id":412,"depth":113,"text":413},{"id":426,"depth":113,"text":427},{"id":437,"depth":21,"text":438},{"id":499,"depth":21,"text":500},{"id":533,"depth":21,"text":534},"How the clamping cylinder of an injection molding (moulding) machine works: barrel, piston, seals, rod nut, rod and auxiliary cylinder, faults and quote details.","md",[593,596,599,602,605],{"question":594,"answer":595},"What does the clamping cylinder do on an injection molding machine?","The clamping cylinder is the hydraulic cylinder that closes and opens the mold. On a toggle machine it drives the crosshead and the toggle links multiply its force into the clamping force; on a direct hydraulic clamp, a large cylinder applies the clamping force directly.",{"question":597,"answer":598},"How do I know if the clamping cylinder seals are leaking?","Oil on the piston rod or dripping from the front head means the rod seals or the wiper are worn. Slow or weak movement, or a cylinder that creeps when its valve is closed, points to oil passing the piston seals, but a leaking valve gives the same symptoms, so test before opening the cylinder.",{"question":600,"answer":601},"Can the seals be replaced without removing the clamping cylinder?","It depends on the machine. Rod seals in the front head can sometimes be changed with the cylinder in place once the head is removed, while piston seals need the piston and rod taken out of the barrel. The machine manual shows the procedure and the lifting points.",{"question":603,"answer":604},"Why does the clamping cylinder knock at the end of its stroke?","The most common reasons are a speed profile that does not slow the movement before the end position, or a loose piston rod nut that lets the piston move on the rod. Check the settings first, then the rod nut when the cylinder is opened.",{"question":606,"answer":607},"What information is needed to quote a clamping cylinder or seal kit?","The machine brand, model, serial number and clamping force, which cylinder it is, and its bore, rod diameter and stroke. For seals, add the groove dimensions or the codes printed on the old seals; for a complete cylinder, add the mounting and port details and photos of the nameplate.",null,"2026-11-01",{},true,"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder",{"title":260,"description":590},"Injection Molding Machine Clamping Cylinder: Parts, Seals","injection-molding-machine-parts\u002Fclamp-cylinder","7D7r5TIv-cE750uxANZYpsW93spDBQTl2UbyvMmCqNA",[618,624,630,635,640],{"path":619,"title":620,"short":621,"description":622,"item":623},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fpiston-seals","Hydraulic cylinder piston seals and Y-rings","Piston seals","What the piston seals of an injection molding machine cylinder do, Y-ring and compact seal types, wear rings, signs of bypass leakage, testing and replacement.","piston-seals",{"path":625,"title":626,"short":627,"description":628,"item":629},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Frod-seals","Rod seals and wiper seals of a hydraulic cylinder","Rod seals and wipers","How the rod seal, wiper seal and guide ring in the front head of an injection molding machine cylinder work, why they leak, and how to inspect and replace them.","rod-seals",{"path":631,"title":632,"short":633,"description":634,"item":608},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fcylinder-seal-replacement","Replacing the seals of an injection molding machine cylinder","Replacing cylinder seals","Step-by-step seal kit replacement for an injection molding machine hydraulic cylinder: safety, dismantling, inspection, fitting new seals and testing.",{"path":636,"title":637,"short":374,"description":638,"item":639},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fpiston-rod-nut","Piston rod nut of a hydraulic cylinder","What the piston rod nut does inside an injection molding machine hydraulic cylinder, how it is locked, the signs of a loose nut, and how to inspect and replace it.","rod-nut",{"path":641,"title":642,"short":413,"description":643,"item":644},"\u002Finjection-molding-machine-parts\u002Fclamp-cylinder\u002Fauxiliary-cylinder","Auxiliary hydraulic cylinder of an injection molding machine","What an auxiliary hydraulic cylinder does on an injection molding machine as a clamping booster, fast-stroke or ejector drive, its faults and how to quote it.","auxiliary",{"diagram":646},{"title":647,"description":648,"items":649},"Parts of a clamping cylinder","Line drawing of a hydraulic clamping cylinder cut open to show the piston, seals, rod nut and rod seals, with a small auxiliary cylinder below, numbered.",[650,667,676,690,704,717,732],{"id":651,"name":334,"role":652,"parts":653,"marker":655,"shapes":659},"barrel","Steel tube closed by the rear cap and the front gland. Oil fed through the ports on either side of the piston moves it forward or back.",[654],"MC-CC-01",[656,657,656,658],150,24,74,{"solid":660},[661,662,663,664,665,666],"M63 64h24a3 3 0 0 1 3 3v126a3 3 0 0 1 -3 3h-24a3 3 0 0 1 -3 -3v-126a3 3 0 0 1 3 -3z","M90 74h260v12h-260z","M90 174h260v12h-260z","M353 64h28a3 3 0 0 1 3 3v126a3 3 0 0 1 -3 3h-28a3 3 0 0 1 -3 -3v-126a3 3 0 0 1 3 -3z","M68 52h14v12h-14z","M360 196h14v12h-14z",{"id":345,"name":346,"role":668,"marker":669,"shapes":673},"Divides the cylinder into two oil chambers. Pressure on one side moves it, and the rod with it, forward or back.",[670,657,671,672],262,234,100,{"solid":674},[675],"M202 86h30a2 2 0 0 1 2 2v84a2 2 0 0 1 -2 2h-30a2 2 0 0 1 -2 -2v-84a2 2 0 0 1 2 -2z",{"id":623,"name":357,"role":677,"parts":678,"marker":680,"shapes":684},"Seal the piston against the barrel so oil cannot pass from one chamber to the other. Leaking seals make clamping slow and weak.",[679],"MC-SB-08",[681,657,682,683],212,210,86,{"solid":685},[686,687,688,689],"M206 86h8v6h-8z","M220 86h8v6h-8z","M206 168h8v6h-8z","M220 168h8v6h-8z",{"id":639,"name":374,"role":691,"parts":692,"marker":694,"shapes":698},"Holds the piston on the end of the rod.",[693],"MC-SB-10",[695,696,695,697],193,336,146,{"solid":699,"line":701},[700],"M188 114h10a2 2 0 0 1 2 2v28a2 2 0 0 1 -2 2h-10a2 2 0 0 1 -2 -2v-28a2 2 0 0 1 2 -2z",[702,703],"M186 124L200 124","M186 136L200 136",{"id":705,"name":385,"role":706,"marker":707,"shapes":710},"rod","Chrome-plated rod that carries the cylinder’s force out through the gland to the toggle crosshead.",[708,657,708,709],410,116,{"solid":711,"hidden":714},[712,713],"M236 116h206a2 2 0 0 1 2 2v24a2 2 0 0 1 -2 2h-206a2 2 0 0 1 -2 -2v-24a2 2 0 0 1 2 -2z","M446 108h10a2 2 0 0 1 2 2v40a2 2 0 0 1 -2 2h-10a2 2 0 0 1 -2 -2v-40a2 2 0 0 1 2 -2z",[715,716],"M200 121L234 121","M200 139L234 139",{"id":629,"name":397,"role":718,"parts":719,"marker":721,"shapes":724},"Seal set in the front gland: the rod seals keep the oil in and the wiper keeps dirt out.",[720],"MC-SB-07",[722,657,722,723],362,110,{"solid":725},[726,727,728,729,730,731],"M358 110h8v6h-8z","M370 110h8v6h-8z","M358 144h8v6h-8z","M370 144h8v6h-8z","M380 112h4v4h-4z","M380 144h4v4h-4z",{"id":644,"name":413,"role":733,"parts":734,"marker":736,"shapes":739},"Smaller cylinder used as a clamping booster or to drive the ejector on some machines.",[735],"MC-CC-02",[737,696,737,738],385,276,{"solid":740,"line":748,"hidden":750},[741,742,743,744,745,746,747],"M302 232h6a2 2 0 0 1 2 2v44a2 2 0 0 1 -2 2h-6a2 2 0 0 1 -2 -2v-44a2 2 0 0 1 2 -2z","M313 236h144a3 3 0 0 1 3 3v34a3 3 0 0 1 -3 3h-144a3 3 0 0 1 -3 -3v-34a3 3 0 0 1 3 -3z","M462 232h6a2 2 0 0 1 2 2v44a2 2 0 0 1 -2 2h-6a2 2 0 0 1 -2 -2v-44a2 2 0 0 1 2 -2z","M472 248h76a2 2 0 0 1 2 2v12a2 2 0 0 1 -2 2h-76a2 2 0 0 1 -2 -2v-12a2 2 0 0 1 2 -2z","M553 244h12a3 3 0 0 1 3 3v18a3 3 0 0 1 -3 3h-12a3 3 0 0 1 -3 -3v-18a3 3 0 0 1 3 -3z","M322 226h10v10h-10z","M438 226h10v10h-10z",[749],"M554 256a5 5 0 1 0 10 0a5 5 0 1 0 -10 0z",[751],"M380 238h8v36h-8z",[753,762,767,773,778],{"partNumber":654,"name":754,"subcategory":94,"subcategoryName":755,"shortDescription":756,"image":757,"inStock":611,"zone":214,"compatibleMachines":758},"Clamping Cylinder","Clamping Cylinders","Main clamping (mold locking) hydraulic cylinder for injection molding machine clamping unit.","\u002Fpart-images\u002FMC\u002FMC-CC-01\u002F9128932b-7cfa-435e-bb52-324ef33e782f.png",[759,760,761],"Haitian MA Series","Haitian Jupiter Series","Chen Hsong JM Series",{"partNumber":735,"name":763,"subcategory":94,"subcategoryName":755,"shortDescription":764,"image":765,"inStock":611,"zone":214,"compatibleMachines":766},"Clamping Cylinder — Small \u002F Auxiliary","Auxiliary clamping or ejection cylinder for injection molding machine.","\u002Fpart-images\u002FMC\u002FMC-CC-02\u002F423bf4c1-6171-48d3-98d9-06feab16d665.png",[759,760],{"partNumber":720,"name":768,"subcategory":72,"subcategoryName":769,"shortDescription":770,"inStock":611,"zone":239,"compatibleMachines":771},"Piston Rod Seal Set","Seals & Bearings","Piston rod seal set for injection molding machine hydraulic cylinders.",[759,772],"Haitian MA II Series",{"partNumber":679,"name":774,"subcategory":72,"subcategoryName":769,"shortDescription":775,"inStock":611,"zone":239,"compatibleMachines":776},"Hydraulic Cylinder Seals & Y-Ring","Hydraulic cylinder seal kits and Y-ring piston rod seals for injection molding machine cylinders.",[759,772,777,761],"Yizumi A5 Series",{"partNumber":693,"name":779,"subcategory":72,"subcategoryName":780,"shortDescription":781,"inStock":611,"zone":239,"compatibleMachines":782},"Piston Rod Nut","Cylinders & Seals","Injection cylinder piston rod nut for Haitian and equivalent injection molding machines.",[759,772,783,784,785],"Haitian MA III Series","Haitian PL Series","Haitian HTF Series",1793548974635]