[{"data":1,"prerenderedAt":987},["ShallowReactive",2],{"catalog:meta":3,"guides:page:\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit:*":258,"guides:topics:hydraulics:\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit:path,title,short":604,"guides:page:\u002Finjection-molding-machine-parts\u002Fhydraulics:diagram":693,"diagram:id:hydraulic-system":695,"catalog:parts:hydraulics:":899},{"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":579,"diagram":580,"extension":581,"faq":582,"item":580,"lastModified":595,"meta":596,"navigation":597,"order":26,"parts":580,"path":598,"seo":599,"seoTitle":600,"short":601,"stem":602,"__hash__":603},"guides\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit.md","Hydraulic circuit of an injection molding machine",{"type":262,"value":263,"toc":570},"minimark",[264,274,279,282,334,338,341,421,433,437,440,490,520,524,527,531,559,563],[265,266,267,268,273],"p",{},"The hydraulic circuit of an injection molding machine is the network of pumps, valves, cylinders and motors that turns oil flow into the machine's movements. The hydraulic circuit diagram in the machine manual draws that network with standard symbols, so you can see which valve drives each movement, how pressure and flow are controlled, and where to measure when a movement fails. The drawing above shows the same parts in simplified form; the ",[269,270,272],"a",{"href":271},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002F","hydraulic system guide"," describes each of them.",[275,276,278],"h2",{"id":277},"the-main-circuits","The main circuits",[265,280,281],{},"The system is one pressure supply feeding several circuits, one for each group of movements:",[283,284,285,293,299,305,316,322,328],"ul",{},[286,287,288,292],"li",{},[289,290,291],"strong",{},"Pump and pressure supply:"," the pump, the relief valve, a check valve at the pump outlet and the pressure and flow control (a proportional valve, a variable pump control or a servo drive). Every other circuit is fed from here.",[286,294,295,298],{},[289,296,297],{},"Clamp circuit:"," the clamp cylinder or cylinders with their directional valve, cartridge valves on larger machines, and on many machines a differential connection for fast closing.",[286,300,301,304],{},[289,302,303],{},"Injection circuit:"," the injection cylinder or cylinders, with valves for injection, hold pressure and suck-back (decompression), and an accumulator on high-speed machines.",[286,306,307,310,311,315],{},[289,308,309],{},"Plasticizing circuit:"," the hydraulic motor that turns the screw, and a back-pressure valve on the return side of the injection cylinder that sets how hard the melt must push the screw back. See ",[269,312,314],{"href":313},"\u002Finjection-molding-machine-parts\u002Fbarrel-screw\u002Fback-pressure\u002F","back pressure",".",[286,317,318,321],{},[289,319,320],{},"Carriage circuit:"," the cylinders that move the injection unit forward to the mold and back.",[286,323,324,327],{},[289,325,326],{},"Ejector circuit:"," the ejector cylinder and its valve.",[286,329,330,333],{},[289,331,332],{},"Auxiliary circuits:"," core pulls and, on some machines, the hydraulic motor for mold height adjustment.",[275,335,337],{"id":336},"how-pressure-and-flow-are-controlled","How pressure and flow are controlled",[265,339,340],{},"The supply side is built in one of three ways, and the circuit diagram shows which one your machine has:",[342,343,344,362],"table",{},[345,346,347],"thead",{},[348,349,350,353,356,359],"tr",{},[351,352],"th",{},[351,354,355],{},"Fixed pump and proportional valve",[351,357,358],{},"Variable piston pump",[351,360,361],{},"Servo motor and fixed pump",[363,364,365,379,393,407],"tbody",{},[348,366,367,371,374,376],{},[368,369,370],"td",{},"Motor",[368,372,373],{},"Constant speed",[368,375,373],{},[368,377,378],{},"Variable speed servo motor",[348,380,381,384,387,390],{},[368,382,383],{},"Flow set by",[368,385,386],{},"Proportional flow valve",[368,388,389],{},"Swashplate angle of the pump",[368,391,392],{},"Motor speed",[348,394,395,398,401,404],{},[368,396,397],{},"Pressure set by",[368,399,400],{},"Proportional pressure valve",[368,402,403],{},"Pump pressure control",[368,405,406],{},"Servo drive, with a pressure transducer",[348,408,409,412,415,418],{},[368,410,411],{},"Surplus flow",[368,413,414],{},"Returns to the tank over a valve, as heat",[368,416,417],{},"Pump reduces its displacement",[368,419,420],{},"Pump slows down",[265,422,423,424,428,429,315],{},"Many older fixed pump machines use a double pump in a high-low circuit: both pumps deliver for fast movements, and the large one is unloaded to the tank when pressure builds, leaving the small one to hold pressure. See ",[269,425,427],{"href":426},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-pump\u002F","hydraulic pump types"," and the ",[269,430,432],{"href":431},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fservo-pump\u002F","servo pump system",[275,434,436],{"id":435},"reading-the-circuit-diagram","Reading the circuit diagram",[265,438,439],{},"Hydraulic diagrams use the standard symbols of ISO 1219. The ones you meet on every injection molding machine diagram are:",[283,441,442,448,454,460,466,472,478,484],{},[286,443,444,447],{},[289,445,446],{},"Pump:"," a circle with a solid triangle pointing outward. An arrow drawn across it means variable displacement.",[286,449,450,453],{},[289,451,452],{},"Hydraulic motor:"," a circle with the triangle pointing inward.",[286,455,456,459],{},[289,457,458],{},"Directional valve:"," a row of squares, one for each spool position. Arrows inside a square show the flow paths in that position, and a T-shaped mark shows a blocked port. A valve is named by its ports and positions: a 4\u002F3 valve has four ports and three positions.",[286,461,462,465],{},[289,463,464],{},"Solenoid and spring:"," a small rectangle with a diagonal line is a solenoid; a zigzag is a spring. The square next to a solenoid is the position the spool takes when that solenoid is energized.",[286,467,468,471],{},[289,469,470],{},"Check valve:"," a ball sitting in a V-shaped seat. Flow is free in the direction that lifts the ball.",[286,473,474,477],{},[289,475,476],{},"Relief valve:"," a square with an arrow set to one side of the flow line (the valve is normally closed), a spring on one side and a dashed pilot line from the inlet on the other.",[286,479,480,483],{},[289,481,482],{},"Accumulator:"," an upright oval, usually with a line that separates gas from oil.",[286,485,486,489],{},[289,487,488],{},"Lines:"," solid lines are working lines; dashed lines are pilot and drain lines.",[265,491,492,493,496,497,500,501,504,505,508,509,504,512,515,516,519],{},"Port letters are printed beside each valve: ",[289,494,495],{},"P"," (pressure), ",[289,498,499],{},"T"," (tank), ",[289,502,503],{},"A"," and ",[289,506,507],{},"B"," (work ports to the actuator), ",[289,510,511],{},"X",[289,513,514],{},"Y"," (pilot pressure and pilot drain) and ",[289,517,518],{},"L"," (leakage drain). Each valve also has a position number that matches the parts list of the diagram, which often gives the valve's model code.",[275,521,523],{"id":522},"the-action-table","The action table",[265,525,526],{},"Most machine manuals include an action table next to the diagram. It lists each movement (mold close, high-pressure clamp, injection, hold, screw recovery, ejector forward and so on) and marks which solenoid valves are energized for it, and sometimes the pressure and flow outputs used. It is the fastest way to link an electrical fault to a hydraulic one.",[275,528,530],{"id":529},"using-the-diagram-to-find-a-fault","Using the diagram to find a fault",[532,533,534,537,545,548,556],"ol",{},[286,535,536],{},"Find the faulty movement in the action table and note which valves should be energized.",[286,538,539,540,544],{},"Check on the controller's input\u002Foutput page, or on the LEDs of the valve plugs, that those outputs are switched on. See the ",[269,541,543],{"href":542},"\u002Finjection-molding-machine-parts\u002Felectrical\u002Fio-module\u002F","I\u002FO module"," page.",[286,546,547],{},"Follow the oil path on the diagram from the pump through those valves to the cylinder, and list everything that could block or leak it: directional valves, cartridge valves, check valves and the cylinder seals.",[286,549,550,551,555],{},"Measure the pressure at the test points marked on the diagram, starting at the pump outlet. Our guide to ",[269,552,554],{"href":553},"\u002Fblog\u002Ftroubleshooting-hydraulic-pressure-loss\u002F","troubleshooting hydraulic pressure loss"," explains the test.",[286,557,558],{},"If only one movement is affected, the fault is usually in that movement's circuit. If every movement is weak, look at the pressure supply.",[275,560,562],{"id":561},"what-to-send-for-a-replacement-quote","What to send for a replacement quote",[265,564,565,566,315],{},"A photo or scan of the circuit diagram page with the faulty part marked, together with the machine model and serial number, makes a valve or pump much faster to identify. Add the valve's position number, the model code from its nameplate and photos of the part. Then ",[269,567,569],{"href":568},"\u002Frequest-quote\u002F","request a quote",{"title":571,"searchDepth":21,"depth":21,"links":572},"",[573,574,575,576,577,578],{"id":277,"depth":21,"text":278},{"id":336,"depth":21,"text":337},{"id":435,"depth":21,"text":436},{"id":522,"depth":21,"text":523},{"id":529,"depth":21,"text":530},{"id":561,"depth":21,"text":562},"How the hydraulic circuit of an injection molding machine is built and how to read its diagram: symbols, ports, pressure and flow control, and each circuit.",null,"md",[583,586,589,592],{"question":584,"answer":585},"What does an injection molding machine hydraulic circuit diagram show?","It shows every pump, valve, cylinder and hydraulic motor of the machine as standard symbols joined by lines for the oil passages. It tells you which valve controls which movement and how pressure and flow are set.",{"question":587,"answer":588},"What do P, T, A and B mean on a hydraulic valve?","P is the pressure port from the pump, T the return port to the tank, and A and B are the work ports that go to the two sides of a cylinder or motor. Pilot-operated valves may also have X and Y ports for pilot pressure and pilot drain.",{"question":590,"answer":591},"Where can I find the hydraulic circuit diagram of my machine?","It is normally in the machine manual or the hydraulic drawings supplied with the machine, often together with an action table showing which solenoid valves are energized for each movement. If it is missing, ask the machine maker with the serial number.",{"question":593,"answer":594},"What is a differential circuit for mold closing?","In a differential (regenerative) circuit, the oil pushed out of the rod side of the clamp cylinder is fed back into the piston side, so the cylinder moves faster for the same pump flow but with less force. Many machines use it for fast mold closing and switch it off before building clamping force.","2026-11-01",{},true,"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit",{"title":260,"description":579},"Hydraulic Circuit Diagram of an Injection Molding Machine","Hydraulic circuit","injection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit","b1nFd39Exvjt5OMgjG_9lpRkEHhEYSxsr1WM23dJBTk",[605,609,613,617,621,625,629,633,637,641,645,649,653,657,661,665,669,673,677,681,685,689],{"path":606,"title":607,"short":608},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-pump","Hydraulic pump of an injection molding machine","Hydraulic pump types",{"path":610,"title":611,"short":612},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fvane-pump","Vane pump of an injection molding machine","Vane pump",{"path":614,"title":615,"short":616},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpiston-pump","Piston pump of an injection molding machine","Piston pump",{"path":618,"title":619,"short":620},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fgear-pump","Gear pump of an injection molding machine","Gear pump",{"path":622,"title":623,"short":624},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fservo-pump","Servo pump system of an injection molding machine","Servo pump system",{"path":626,"title":627,"short":628},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpump-coupling","Pump coupling and bell housing of an injection molding machine","Pump coupling",{"path":630,"title":631,"short":632},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpower-unit","Hydraulic power unit of an injection molding machine","Hydraulic power unit",{"path":634,"title":635,"short":636},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fdirectional-valve","Solenoid directional valve of an injection molding machine","Directional valve",{"path":638,"title":639,"short":640},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fproportional-valve","Proportional valve of an injection molding machine","Proportional valve",{"path":642,"title":643,"short":644},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fcartridge-valve","Cartridge valve of an injection molding machine","Cartridge valve",{"path":646,"title":647,"short":648},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-check-valve","Hydraulic check valve of an injection molding machine","Hydraulic check valve",{"path":650,"title":651,"short":652},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve","Relief valve of an injection molding machine","Relief valve",{"path":654,"title":655,"short":656},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fvalve-manifold","Valve manifold of an injection molding machine","Valve manifold",{"path":658,"title":659,"short":660},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Faccumulator","Accumulator of an injection molding machine","Accumulator",{"path":662,"title":663,"short":664},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-oil","Hydraulic oil for injection molding machines","Hydraulic oil",{"path":666,"title":667,"short":668},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-temperature","Oil temperature of an injection molding machine","Oil temperature",{"path":670,"title":671,"short":672},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-filter","Hydraulic oil filter of an injection molding machine","Oil filter",{"path":674,"title":675,"short":676},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-cooler","Oil cooler (heat exchanger) of an injection molding machine","Oil cooler",{"path":678,"title":679,"short":680},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-tank","Hydraulic oil tank of an injection molding machine","Oil tank",{"path":682,"title":683,"short":684},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fcooling-water-manifold","Cooling water manifold of an injection molding machine","Cooling water manifold",{"path":686,"title":687,"short":688},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpressure-gauge","Hydraulic pressure gauge of an injection molding machine","Pressure gauge",{"path":690,"title":691,"short":692},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpressure-transducer","Pressure transducer of an injection molding machine","Pressure transducer",{"diagram":694},"hydraulic-system",{"diagram":696},{"title":697,"description":698,"base":699,"items":707},"Parts of the hydraulic system","Line drawing of an injection molding machine hydraulic system: oil tank, filter, motor, pump, valves, gauge, accumulator, cooler and a cylinder, numbered.",{"line":700},[701,702,703,704,705,706],"M200 186L200 140L270 140","M362 96L362 68L450 68","M378 96L378 44L565 44L565 50","M476 232L390 232L390 164","M330 164L330 244L540 244L540 262","M520 276L456 276",[708,721,736,756,771,788,808,830,846,863,880],{"id":709,"name":680,"role":710,"subcategory":129,"marker":711,"shapes":715},"tank","Holds the hydraulic oil. Returning oil settles here and sheds heat and air before the pump draws it again.",[712,713,712,714],120,336,304,{"solid":716,"hidden":719},[717,718],"M39 250h414a3 3 0 0 1 3 3v48a3 3 0 0 1 -3 3h-414a3 3 0 0 1 -3 -3v-48a3 3 0 0 1 3 -3z","M420 242h18v8h-18z",[720],"M44 262L448 262",{"id":722,"name":723,"role":724,"subcategory":129,"marker":725,"shapes":728},"filter","Suction filter","Strainer on the pump’s suction line inside the tank. It keeps dirt and metal particles out of the pump.",[726,713,726,727],202,296,{"solid":729,"line":731},[730],"M194 268h16a2 2 0 0 1 2 2v24a2 2 0 0 1 -2 2h-16a2 2 0 0 1 -2 -2v-24a2 2 0 0 1 2 -2z",[732,733,734,735],"M202 230L202 268","M196 275L208 275","M196 282L208 282","M196 289L208 289",{"id":737,"name":738,"role":739,"subcategory":23,"marker":740,"shapes":744},"motor","Electric motor","Drives the pump. Newer machines use a servo motor that only runs as fast as the cycle needs, which saves energy.",[741,742,741,743],98,24,174,{"solid":745,"line":749},[746,747,748],"M58 186h80a6 6 0 0 1 6 6v44a6 6 0 0 1 -6 6h-80a6 6 0 0 1 -6 -6v-44a6 6 0 0 1 6 -6z","M80 174h30v12h-30z","M58 242h80v8h-80z",[750,751,752,753,754,755],"M64 192L64 236","M76 192L76 236","M88 192L88 236","M100 192L100 236","M112 192L112 236","M124 192L124 236",{"id":757,"name":758,"role":759,"parts":760,"marker":762,"shapes":766},"coupling","Coupling and bell housing","The bell housing bolts the pump to the motor and keeps the shafts aligned. The flexible coupling inside carries the torque.",[761],"HY-PW-05",[763,742,764,765],150,162,196,{"solid":767,"hidden":769},[768],"M144 192L180 200L180 228L144 236Z",[770],"M154 206h16v16h-16z",{"id":772,"name":773,"role":774,"parts":775,"marker":779,"shapes":782},"pump","Hydraulic pump","Turns the motor’s rotation into oil flow. Fixed-speed machines mostly use vane or piston pumps; servo-hydraulic machines often use internal gear pumps.",[776,777,778],"HY-PW-06","HY-PW-07","HY-PW-02",[726,742,780,781],215,198,{"solid":783,"line":786},[784,785],"M183 198h38a3 3 0 0 1 3 3v26a3 3 0 0 1 -3 3h-38a3 3 0 0 1 -3 -3v-26a3 3 0 0 1 3 -3z","M193 186h14v12h-14z",[787],"M187 199L187 229",{"id":789,"name":688,"role":790,"parts":791,"marker":793,"shapes":797},"gauge","Shows the system pressure, so the operator can check the settings and spot a pressure loss early.",[792],"HY-MO-01",[794,742,795,796],254,238,90,{"solid":798,"line":800},[799],"M220 106a16 16 0 1 0 32 0a16 16 0 1 0 -32 0z",[801,802,803,804,805,806,807],"M236 140L236 122","M236 106L245 96","M227.51471862576142 114.48528137423857L225.3933982822018 116.60660171779821","M224.91344560986457 101.40779881161892L222.1418070123307 100.25974851452365","M236 94L236 91","M247.08655439013543 101.40779881161892L249.8581929876693 100.25974851452365","M244.48528137423858 114.48528137423857L246.6066017177982 116.60660171779821",{"id":809,"name":656,"role":810,"subcategory":47,"marker":811,"shapes":814},"valves","The valve block that sends oil to each movement. Solenoid valves on top and cartridge valves inside switch clamping, injection, ejection and nozzle movements.",[812,742,812,813],318,96,{"solid":815,"line":826},[816,817,818,819,820,821,822,823,824,825],"M272 120h128a2 2 0 0 1 2 2v40a2 2 0 0 1 -2 2h-128a2 2 0 0 1 -2 -2v-40a2 2 0 0 1 2 -2z","M276 100h12v16h-12z","M290 96h32a2 2 0 0 1 2 2v20a2 2 0 0 1 -2 2h-32a2 2 0 0 1 -2 -2v-20a2 2 0 0 1 2 -2z","M324 100h12v16h-12z","M340 100h12v16h-12z","M354 96h32a2 2 0 0 1 2 2v20a2 2 0 0 1 -2 2h-32a2 2 0 0 1 -2 -2v-20a2 2 0 0 1 2 -2z","M388 100h12v16h-12z","M291 142a7 7 0 1 0 14 0a7 7 0 1 0 -14 0z","M329 142a7 7 0 1 0 14 0a7 7 0 1 0 -14 0z","M367 142a7 7 0 1 0 14 0a7 7 0 1 0 -14 0z",[827,828,829],"M295.5 142a2.5 2.5 0 1 0 5 0a2.5 2.5 0 1 0 -5 0z","M333.5 142a2.5 2.5 0 1 0 5 0a2.5 2.5 0 1 0 -5 0z","M371.5 142a2.5 2.5 0 1 0 5 0a2.5 2.5 0 1 0 -5 0z",{"id":831,"name":652,"role":832,"parts":833,"marker":835,"shapes":839},"relief","Opens when the pressure goes above its setting and sends the oil back to the tank, protecting the pump, hoses and cylinders.",[834],"HY-CV-06",[836,742,837,838],410,427,135,{"solid":840,"line":844},[841,842,843],"M402 130h18v24h-18z","M420 135h14v14h-14z","M442 137h6v10h-6z",[845],"M434 142L442 142",{"id":847,"name":848,"role":849,"subcategory":94,"marker":850,"shapes":854},"cylinder","Hydraulic cylinder","Turns oil pressure into straight-line force: for clamping the mold, injecting, ejecting and moving the injection unit.",[851,742,852,853],530,510,56,{"solid":855,"hidden":860},[856,857,858,859],"M450 50h10v36h-10z","M462 56h96a2 2 0 0 1 2 2v20a2 2 0 0 1 -2 2h-96a2 2 0 0 1 -2 -2v-20a2 2 0 0 1 2 -2z","M560 50h10v36h-10z","M570 62h44v12h-44z",[861,862],"M500 58h10v20h-10z","M510 68L560 68",{"id":864,"name":660,"role":865,"parts":866,"marker":868,"shapes":872},"accumulator","Stores oil under nitrogen pressure and releases it in a burst for fast injection, more flow than the pump alone delivers.",[867],"HY-AU-02",[869,870,871,870],616,160,512,{"solid":873,"hidden":878},[874,875,876,877],"M496 104h0a16 16 0 0 1 16 16v80a16 16 0 0 1 -16 16h0a16 16 0 0 1 -16 -16v-80a16 16 0 0 1 16 -16z","M490 94h12v10h-12z","M490 216h12v10h-12z","M476 226h40v12h-40z",[879],"M496 114h0a10 10 0 0 1 10 10v60a10 10 0 0 1 -10 10h0a10 10 0 0 1 -10 -10v-60a10 10 0 0 1 10 -10z",{"id":881,"name":676,"role":882,"subcategory":129,"marker":883,"shapes":886},"cooler","Water-cooled heat exchanger on the return line. It keeps the oil from overheating, which would thin it and wear the seals and pumps.",[884,713,884,885],562,290,{"solid":887,"line":891,"hidden":896},[888,889,890],"M534 262h56a14 14 0 0 1 14 14v0a14 14 0 0 1 -14 14h-56a14 14 0 0 1 -14 -14v0a14 14 0 0 1 14 -14z","M530 290h8v14h-8z","M586 290h8v14h-8z",[892,893,894,895],"M534 263L534 289","M590 263L590 289","M604 270L616 270","M604 282L616 282",[897,898],"M534 272L590 272","M534 280L590 280",[900,908,915,922,927,931,937,943,948,952,957,961,966,972,977,982],{"partNumber":867,"name":901,"subcategory":43,"subcategoryName":44,"shortDescription":902,"image":903,"inStock":597,"zone":243,"compatibleMachines":904},"Hydraulic Accumulator","Bladder-type hydraulic accumulator for injection molding machine high-speed injection circuits.","\u002Fpart-images\u002FHY\u002FHY-AU-02\u002FHY-AU-02.jpg",[905,906,907],"Haitian MA Series","Haitian Jupiter Series","Chen Hsong JM Series",{"partNumber":909,"name":910,"subcategory":47,"subcategoryName":48,"shortDescription":911,"image":912,"inStock":597,"zone":243,"compatibleMachines":913},"HY-CV-02","Directional Control Valve","Solenoid-operated directional control valve for injection molding machine hydraulic circuits.","\u002Fpart-images\u002FHY\u002FHY-CV-02\u002Feeaecc6c53657d38d48089a1344d4bce.jpg",[905,906,914,907],"Yizumi A5 Series",{"partNumber":916,"name":917,"subcategory":47,"subcategoryName":48,"shortDescription":918,"image":919,"inStock":597,"zone":243,"compatibleMachines":920},"HY-CV-04","Proportional Pressure\u002FFlow Valve","Proportional solenoid valve for precise pressure and flow control in injection molding machines.","\u002Fpart-images\u002FHY\u002FHY-CV-04\u002F06e2c777-c0f3-4739-8046-c59de63bbd4e.png",[905,921,914],"Haitian MA II Series",{"partNumber":923,"name":924,"subcategory":47,"subcategoryName":48,"shortDescription":925,"inStock":597,"zone":243,"compatibleMachines":926},"HY-CV-05","Check Valve","Hydraulic check valve for injection molding machine circuits.",[905,906],{"partNumber":834,"name":928,"subcategory":47,"subcategoryName":48,"shortDescription":929,"inStock":597,"zone":243,"compatibleMachines":930},"Relief Valve \u002F Safety Valve","Hydraulic relief and safety valve for injection molding machine system pressure protection.",[905,906,907],{"partNumber":932,"name":933,"subcategory":47,"subcategoryName":48,"shortDescription":934,"image":935,"inStock":597,"zone":243,"compatibleMachines":936},"HY-CV-08","Cartridge Valve","Hydraulic cartridge valve for injection molding machine manifold blocks.","\u002Fpart-images\u002FHY\u002FHY-CV-08\u002F41953eeb-f34f-4462-bdad-956e39dcf40b.png",[906,921],{"partNumber":938,"name":939,"subcategory":47,"subcategoryName":48,"shortDescription":940,"inStock":597,"zone":243,"compatibleMachines":941},"HY-CV-15","Solenoid Operated Valve — High Flow","High-flow solenoid operated directional valve for large-tonnage injection molding machines.",[906,942],"Haitian MA II 1200T+",{"partNumber":792,"name":944,"subcategory":52,"subcategoryName":945,"shortDescription":946,"inStock":597,"zone":243,"compatibleMachines":947},"Hydraulic Pressure Gauge","Monitoring & Instruments","Glycerin-filled hydraulic pressure gauge for injection molding machine system monitoring.",[905,906,914],{"partNumber":778,"name":949,"subcategory":56,"subcategoryName":57,"shortDescription":950,"inStock":597,"zone":243,"compatibleMachines":951},"Gear Pump (Sumitomo QT32)","Sumitomo QT32 series internal gear pump for injection molding machine hydraulic systems.",[905,914],{"partNumber":953,"name":954,"subcategory":56,"subcategoryName":57,"shortDescription":955,"inStock":597,"zone":243,"compatibleMachines":956},"HY-PW-03","Hydraulic Power Unit \u002F Oil Pump Assembly","Complete hydraulic pump motor assembly for injection molding machine power unit.",[905,906],{"partNumber":761,"name":958,"subcategory":56,"subcategoryName":57,"shortDescription":959,"inStock":597,"zone":243,"compatibleMachines":960},"Pump Coupling & Bell Housing","Pump coupling and bell housing adapter for injection molding machine hydraulic pump drives.",[905,906],{"partNumber":776,"name":962,"subcategory":56,"subcategoryName":57,"shortDescription":963,"image":964,"inStock":597,"zone":243,"compatibleMachines":965},"Hydraulic Vane Pump","High-performance hydraulic vane pump for injection molding machine hydraulic power units.","\u002Fpart-images\u002FHY\u002FHY-PW-06\u002FVickers vane pump\u002F20V,25V,35.jpg",[905,906,907],{"partNumber":777,"name":967,"subcategory":56,"subcategoryName":57,"shortDescription":968,"image":969,"inStock":597,"zone":243,"compatibleMachines":970},"Hydraulic Piston Pump","Variable displacement hydraulic piston pump for high-pressure injection molding machine applications.","\u002Fpart-images\u002FHY\u002FHY-PW-07\u002FYUKEN Piston Pump\u002FWechatIMG807.jpg",[905,906,971],"Chen Hsong SM Series",{"partNumber":973,"name":974,"subcategory":129,"subcategoryName":130,"shortDescription":975,"inStock":597,"zone":243,"compatibleMachines":976},"O-TC-02","Hydraulic Oil Filter","Self-sealing magnetic suction oil filter for injection molding machine hydraulic tanks.",[905,906,914],{"partNumber":978,"name":979,"subcategory":129,"subcategoryName":130,"shortDescription":980,"inStock":597,"zone":243,"compatibleMachines":981},"O-TC-04","Oil Cooler \u002F Heat Exchanger","Hydraulic oil cooler (heat exchanger) for injection molding machine oil temperature control.",[905,906,907],{"partNumber":983,"name":984,"subcategory":129,"subcategoryName":130,"shortDescription":985,"inStock":597,"zone":243,"compatibleMachines":986},"O-TC-05","Oil Tank \u002F Hydraulic Reservoir","Hydraulic oil reservoir tank for injection molding machine power unit.",[905,906],1793548982909]