{"id":2408,"date":"2026-06-30T08:59:01","date_gmt":"2026-06-30T08:59:01","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/injection-molding-machine-shooting-cylinder\/"},"modified":"2026-06-30T08:59:16","modified_gmt":"2026-06-30T08:59:16","slug":"injection-molding-machine-shooting-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/th\/product\/injection-molding-machine-shooting-cylinder\/","title":{"rendered":"Injection Molding Machine Shooting Cylinder"},"content":{"rendered":"

<\/p>\n

<\/p>\n

\n
\n
\n Injection Molding Machine<\/span>
\n Shooting Cylinder \u00b7 Nozzle Docking<\/span>\n <\/div>\n

Dock. Hold. Inject.
Retract. Repeat.<\/h2>\n

After forges, furnaces, filter presses, and cement mills \u2014 a different world. The injection molding machine is clean, fast, and precise. The shooting cylinder slides the entire injection unit forward on its guide rails, docking the nozzle tip against the mold sprue. It holds the nozzle-to-mold contact force during the 1\u201330 second injection phase, preventing molten plastic from leaking at the junction. Then it retracts. Every cycle. Every 10\u201360 seconds. Thousands of times per shift.<\/p>\n

\n
\n
384 KN<\/div>\n
Max Thrust<\/div>\n<\/div>\n
\n
63\u2013140mm<\/span><\/div>\n
Bore<\/div>\n<\/div>\n
\n
\u22641,500mm<\/span><\/div>\n
Stroke<\/div>\n<\/div>\n
\n
10\u201360s<\/div>\n
Cycle Time<\/div>\n<\/div><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

What the Shooting Cylinder Does \u2014 And What It Does Not Do<\/h2>\n

An injection molding machine has two main assemblies: the clamping unit (which holds the mold closed) and the injection unit (which melts plastic and injects it into the mold). The injection unit sits on guide rails and can slide toward or away from the mold. The shooting cylinder drives this sliding motion \u2014 advancing the injection unit until the nozzle tip seats firmly against the mold’s sprue bushing.<\/p>\n

The shooting cylinder is a carriage<\/em> cylinder \u2014 it moves the injection unit as a whole. It is not the injection ram (which pushes the screw forward to force molten plastic through the nozzle). The injection ram produces the high injection pressure (up to 200+ MPa at the plastic); the shooting cylinder produces the contact force between the nozzle tip and the sprue bushing (typically 20\u2013100 KN depending on the machine size). These are two different cylinders with two different functions \u2014 and the shooting cylinder is manufactured by Korea Ever-Power as part of the industrial engineering hydraulic cylinder<\/a> programme for injection molding machine builders.<\/p>\n

\"Injection
\n<\/section>\n

<\/p>\n

\n

Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Product<\/td>\nInjection Molding Machine Shooting Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nAdvance injection unit \/ dock nozzle to mold sprue<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n63 mm \u2013 140 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n36 mm \u2013 90 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 1,500 mm<\/td>\n<\/tr>\n
Maximum Thrust<\/td>\n384 KN (bore 140 mm \/ pressure 25 MPa)<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 25 MPa<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 100% hydrostatic tested<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n

<\/p>\n

\n

Nozzle Touch-Off Force \u2014 The Narrow Window Between Leak and Damage<\/h2>\n
\n \"Nozzle<\/p>\n

When the injection screw pushes molten plastic through the nozzle, the plastic pressure at the nozzle tip can reach 50\u2013200 MPa. This pressure tries to push the nozzle away from the mold sprue. If the nozzle separates \u2014 even by 0.1 mm \u2014 molten plastic squeezes through the gap, creating a “nozzle drool” or a “flash ring” around the sprue that must be trimmed from every part. Repeated nozzle separation causes sprue bushing erosion, requiring expensive mold repair.<\/p>\n

The shooting cylinder’s contact force must exceed the injection pressure’s separating force by a comfortable margin \u2014 ensuring the nozzle stays sealed throughout the injection and packing phases. But the contact force cannot be arbitrarily high: excessive force compresses the nozzle tip against the sprue bushing, accelerating wear on both surfaces and potentially cracking the sprue bushing (especially on small moulds with thin sprue inserts).<\/p>\n

This touch-off force is set by the shooting cylinder’s hydraulic pressure \u2014 the machine operator adjusts the cylinder pressure to match the injection pressure and the mould’s sprue geometry. Korea Ever-Power designs the shooting cylinder bore diameter to produce the required force range at the machine’s system pressure, providing a proportional control window from minimum contact (for small moulds with delicate sprue inserts) to maximum contact (for large moulds with robust sprue bushings).<\/p>\n<\/p><\/div>\n

<\/div>\n<\/section>\n

<\/p>\n

\n

The Injection Cycle \u2014 From the Shooting Cylinder’s Perspective<\/h2>\n

The injection molding cycle takes 10\u201360 seconds (depending on part size and cooling time). The shooting cylinder has a specific role in each phase:<\/p>\n

\n
\n 1. Advance and dock (1\u20133 s)<\/strong><\/p>\n

The shooting cylinder extends, sliding the injection unit forward until the nozzle tip contacts the sprue bushing. The cylinder pressure builds to the set touch-off force. The advance speed must be controlled \u2014 a hard impact between nozzle and sprue bushing damages both surfaces.<\/p>\n<\/p><\/div>\n

\n 2. Hold during injection + packing (2\u201315 s)<\/strong><\/p>\n

The injection screw pushes forward, injecting molten plastic through the nozzle into the mould. The shooting cylinder maintains contact force throughout \u2014 resisting the injection pressure’s tendency to push the nozzle back. The cylinder must hold without drifting.<\/p>\n<\/p><\/div>\n

\n 3. Hold during cooling (5\u201340 s)<\/strong><\/p>\n

The plastic cools inside the mould. Some machines keep the nozzle docked during cooling (to prevent “cold slug” issues); others retract the nozzle slightly. The shooting cylinder either holds contact force or retracts a few millimetres, depending on the process setting.<\/p>\n<\/p><\/div>\n

\n 4. Retract (optional \u2014 1\u20133 s)<\/strong><\/p>\n

If the process requires “suck-back” (nozzle retraction to prevent drool), the shooting cylinder retracts a few millimetres. For mould changes or maintenance, the cylinder retracts fully \u2014 pulling the injection unit back 500\u20131,500 mm to clear the mould area for crane access.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n
\n

A Different World \u2014 Clean, Fast, Precise<\/h2>\n

The previous 23 products in this catalogue operate in forges (1,200 \u00b0C, scale, splash), steel mills (1,800 \u00b0C, fume, molten metal), cement plants (extreme dust, continuous vibration), and filter presses (corrosive slurry). The injection molding shooting cylinder operates in a clean factory environment \u2014 indoor, climate-controlled, with filtered ambient air and stable temperatures between 15\u201335 \u00b0C.<\/p>\n

\n
\n No extreme heat<\/strong><\/p>\n

The nozzle tip reaches 200\u2013400 \u00b0C (plastic processing temperature), but the cylinder body is 1\u20132 metres away from the nozzle \u2014 the cylinder itself operates at ambient temperature. Standard NBR seals are adequate \u2014 no need for the FKM high-temperature seals required by furnace and kiln cylinders.<\/p>\n<\/p><\/div>\n

\n No abrasive dust<\/strong><\/p>\n

The injection molding factory floor is clean by industrial standards. The shooting cylinder rod is not exposed to abrasive particles \u2014 standard single-lip wipers provide adequate rod protection. The double-lip wipers and rod boots specified for cement and forge service are not needed here.<\/p>\n<\/p><\/div>\n

\n Speed and precision take priority<\/strong><\/p>\n

In a 15-second injection cycle, the shooting cylinder’s advance and retract add 2\u20136 seconds to each cycle. Every 0.5 seconds saved on the cylinder’s motion saves 0.5 seconds per part \u2014 multiplied by 5,000 parts per shift, that is 2,500 seconds (40+ minutes) of additional production per shift. Cylinder speed and deceleration smoothness directly affect the machine’s production rate. Contact the hydraulic cylinder engineering team<\/a> for cycle-time-optimised specifications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n \"Shooting
\n<\/section>\n

<\/p>\n

\n

Manufacturing for High-Cycle Clean-Environment Service<\/h2>\n
\n \"Korea<\/p>\n

The shooting cylinder operates in a kinder environment than the forge or cement plant \u2014 but the cycle count is demanding. At one extend-retract cycle every 15\u201360 seconds, the cylinder accumulates 500,000\u20132,000,000 cycles per year. This is fewer than the cement cooler feeding cylinder (#23) but far more than the grinding or roll over cylinders (#20\u201322).<\/p>\n

The bore is honed to Ra 0.2\u20130.4 \u00b5m \u2014 the Korea Ever-Power standard. The rod is chrome plated at 30\u201350 \u00b5m (lighter than the 80\u2013100 \u00b5m used for forge and cement cylinders, because the clean environment does not attack the chrome). Seals are standard NBR or polyurethane \u2014 selected for low friction and high cycle life rather than extreme temperature or chemical resistance.<\/p>\n

The end-of-stroke cushion on the extend side is critical \u2014 it decelerates the injection unit just before the nozzle contacts the sprue bushing. Without the cushion, the nozzle impacts the sprue at travel speed, which damages the nozzle tip seat over repeated cycles. Korea Ever-Power calibrates the cushion for the specific injection unit mass and maximum advance speed during factory testing.<\/p>\n<\/p><\/div>\n

<\/div>\n<\/section>\n

<\/p>\n

\n

OEM & ODM<\/h2>\n
\n
\n
\n

What You Provide<\/h3>\n<\/div>\n
\n

Injection unit mass, required nozzle touch-off force range (min and max KN), advance and retract speed, stroke, guide rail type (for mounting geometry), system hydraulic pressure, cycle time requirement, and the injection molding machine frame drawing showing the shooting cylinder mounting position. Optionally combined with ejection, mold opening\/closing, and mold shifting cylinders for the complete machine set.<\/p>\n<\/div><\/div>\n

\n
\n

What the Factory Delivers<\/h3>\n<\/div>\n
\n

Engineering drawing with bore (sized for the required touch-off force at system pressure), rod, stroke, cushion specification (calibrated for injection unit mass and advance speed), seal specification, and mounting dimensions. Hydrostatic test + cushion verification. Seal kits. Browse the complete injection molding machine cylinder family<\/a>.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

FAQ<\/h2>\n
\n
\n

Is the shooting cylinder the same as the injection cylinder?<\/h3>\n

No \u2014 they are two separate cylinders with different functions. The shooting cylinder moves the entire injection unit carriage along the machine bed (positioning the nozzle against the mould). The injection cylinder (or injection ram) pushes the screw forward inside the barrel to force molten plastic through the nozzle into the mould. The injection cylinder operates at much higher pressures (up to 200+ MPa at the plastic) but with a much shorter stroke (typically 100\u2013300 mm of screw travel). Korea Ever-Power manufactures both types as part of the injection molding cylinder family<\/a>.<\/p>\n<\/p><\/div>\n

\n

Why does the shooting cylinder need 1,500 mm of stroke?<\/h3>\n

During normal production, the shooting cylinder uses only a fraction of its stroke \u2014 the nozzle advances 20\u2013100 mm from the retracted position to contact the sprue. The full 1,500 mm stroke is needed for mould changes: the injection unit must retract far enough to clear the mould area so a crane can swing the old mould out and the new mould in. On large machines with large moulds, 1,500 mm of retraction provides the clearance for safe mould handling.<\/p>\n<\/p><\/div>\n

\n

What other cylinders does an injection molding machine need?<\/h3>\n

A complete injection molding machine uses four cylinder types: the shooting cylinder (this product \u2014 nozzle docking), the ejection cylinder<\/a> (pushes the finished part out of the mould), the mold opening\/closing cylinder (opens and closes the mould halves), and the mold shifting cylinder (quick mould change on multi-mould machines). Korea Ever-Power manufactures all four types. Browse the full hydraulic cylinder product range<\/a> including forklift cylinders<\/a> and telescopic cylinders<\/a>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

Related Categories<\/h2>\n
\n <\/p>\n
\n
\"Telescopic\"<\/div>\n
\n
Telescopic Hydraulic Cylinders \u2192<\/div>\n
Dump truck, trailer, hoist.<\/div>\n<\/div>\n<\/div>\n

<\/a>
\n <\/p>\n

\n
\"Forklift\"<\/div>\n
\n
Forklift Hydraulic Cylinders \u2192<\/div>\n
Lift, tilt, steer \u2014 OEM.<\/div>\n<\/div>\n<\/div>\n

<\/a>
\n <\/p>\n

\n
\"AWV\"<\/div>\n
\n
Aerial Work Vehicle Cylinders \u2192<\/div>\n
Scissor, boom, platforms.<\/div>\n<\/div>\n<\/div>\n

<\/a>\n <\/div>\n<\/section>\n

<\/main><\/p>","protected":false},"excerpt":{"rendered":"

Injection molding machine shooting cylinder \u2014 the positioning actuator that slides the entire injection unit forward until the nozzle contacts the mold sprue, holds the contact force during injection, and retracts the unit for mold changes or nozzle cleaning. This is not the injection ram (which pushes molten plastic through the nozzle) \u2014 it is the carriage cylinder that docks the injection unit against the mold. Nozzle touch-off force must be precisely controlled: too little and molten plastic leaks between nozzle and sprue; too much and the sprue bushing or nozzle tip is damaged. Bore 63\u2013140 mm, stroke \u22641,500 mm, thrust 384 KN at 25 MPa. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2409,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[852],"product_tag":[],"class_list":["post-2408","product","type-product","status-publish","has-post-thumbnail","product_cat-industrial-engineering-hydraulic-cylinders","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/product\/2408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/comments?post=2408"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/media\/2409"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/media?parent=2408"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/product_brand?post=2408"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/product_cat?post=2408"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/th\/wp-json\/wp\/v2\/product_tag?post=2408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}