{"id":2426,"date":"2026-06-30T08:59:20","date_gmt":"2026-06-30T08:59:20","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/loading-and-unloading-tires-hydraulic-cylinder-for-vulcanizing-machine\/"},"modified":"2026-06-30T08:59:26","modified_gmt":"2026-06-30T08:59:26","slug":"loading-and-unloading-tires-hydraulic-cylinder-for-vulcanizing-machine","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/bg\/product\/loading-and-unloading-tires-hydraulic-cylinder-for-vulcanizing-machine\/","title":{"rendered":"Loading and Unloading Tires Hydraulic Cylinder for Vulcanizing Machine"},"content":{"rendered":"

<\/p>\n

<\/p>\n

\n
\n
\n Vulcanizing Machine<\/span>
\n Loading & Unloading Tires Cylinder<\/span>\n <\/div>\n

Soft Tire In.
Hot Tire Out.
Same Cylinder. Different Grip.<\/h2>\n

Every other vulcanizing cylinder works on the mold or the centre mechanism \u2014 steel components at known positions and known weights. The loading\/unloading cylinder is the only one that handles the tire itself \u2014 swinging the loader arm in to grab it, lifting it, and swinging it out. Going in: a soft, sticky green tire that deforms if gripped too hard. Coming out: a stiff, 180 \u00b0C cured tire that burns anything it touches. Every second of this transfer is a second the press sits idle.<\/p>\n

\n
\n
164 KN<\/div>\n
Max Thrust<\/div>\n<\/div>\n
\n
63\u2013100mm<\/span><\/div>\n
Bore<\/div>\n<\/div>\n
\n
\u22642,000mm<\/span><\/div>\n
Stroke<\/div>\n<\/div>\n
\n
2 Jobs<\/div>\n
Load Green + Unload Cured<\/div>\n<\/div><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

Two Opposite Operations \u2014 One Cylinder Must Handle Both<\/h2>\n
\n
\n
\n

Loading \u2014 Green Tire Into the Mold<\/h3>\n<\/div>\n
\n

The green tire waits on a staging conveyor beside the press. The loader arm \u2014 driven by this cylinder \u2014 swings horizontally over the open lower mold, lowers to pick up the green tire from the conveyor, swings back over the mold centre, and lowers the tire onto the centre mechanism’s lower chuck. The green tire is soft, tacky, and easily deformed \u2014 the grip must be gentle (to avoid distorting the uncured rubber) but secure (to prevent the tire from slipping off the arm during the swing). Speed is moderate: a few seconds for the complete swing-lower-grab-swing-lower-release sequence.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

Unloading \u2014 Cured Tire Out of the Mold<\/h3>\n<\/div>\n
\n

After the mold opens (#30) and the bead chucks release (#31, #32), the cured tire sits in the lower mold container. The loader arm swings in, grips the tire from above, lifts it out of the container, swings it to the tipping mechanism (#28) or the post-cure conveyor, and releases it. The cured tire is hot (150\u2013180 \u00b0C), rigid, and heavier than the green tire (the rubber has densified during cure). The grip hardware must tolerate the heat, and the cylinder speed should be fast \u2014 the mold is open and losing heat energy every second the tire sits in it.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

The same cylinder and the same loader arm handle both operations \u2014 loading the next green tire immediately after unloading the cured one. Korea Ever-Power manufactures the loading\/unloading cylinder as the material-handling component of the vulcanizing machine cylinder family<\/a>.<\/p>\n<\/section>\n

<\/p>\n

\n \"Loading
\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>\nLoading and Unloading Tires Hydraulic Cylinder<\/td>\n<\/tr>\n
Function<\/td>\nTransfer green tires into the mold \/ remove cured tires<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n63 mm \u2013 100 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n45 mm \u2013 70 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 2,000 mm<\/td>\n<\/tr>\n
Maximum Thrust<\/td>\n164 KN (bore 100 mm \/ pressure 21 MPa)<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 21 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
\n

Every Second Counts \u2014 The Loader Arm Sets the Production Rate<\/h2>\n

A typical passenger car tire cure cycle is 10\u201315 minutes. The mold open \u2192 unload \u2192 load \u2192 mold close sequence adds 30\u201390 seconds to every cycle \u2014 time during which the press produces nothing and the mold loses heat. The loading\/unloading cylinder’s speed directly controls how much of that dead time the loader arm consumes.<\/p>\n

\n
\n Fast unload (5\u201315 s)<\/strong><\/p>\n

The loader arm swings in, grips the cured tire, lifts it from the container, swings it out to the tipping station. This should be as fast as possible \u2014 the cured tire is rigid and can tolerate aggressive handling. Cylinder speed is maximised during the swing phase.<\/p>\n<\/p><\/div>\n

\n Gentle load (5\u201320 s)<\/strong><\/p>\n

The loader arm swings back, picks up the waiting green tire, swings it over the open mold, and lowers it onto the centre mechanism. The lowering phase must be slow and controlled \u2014 the green tire must seat squarely on the lower bead chuck without cocking sideways or deforming against the mold walls.<\/p>\n<\/p><\/div>\n

\n Impact: saving 10 seconds per cycle<\/strong><\/p>\n

A 10-second faster loader arm cycle on a 12-minute cure adds one extra tire per 2 hours. Over 24 hours, that is 12 additional tires per press per day. For a tire plant with 50 presses, that is 600 tires\/day \u2014 approximately $30,000\/day in additional production value. Contact the hydraulic cylinder engineering team<\/a> for cycle-time-optimised loading\/unloading cylinders.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

The Loader Arm \u2014 Swing, Lower, Grip, Lift, Swing, Release<\/h2>\n
\n \"Loader<\/p>\n

The loader arm is not a simple linear pusher \u2014 it is a multi-axis mechanism that must position the tire precisely in 3D space. The loading\/unloading cylinder typically provides one axis of this motion (the horizontal swing or the vertical lift), while separate cylinders or pneumatic actuators handle the other axes (grip open\/close, secondary lift, rotation).<\/p>\n

The 2,000 mm stroke accommodates the full swing arc from the staging conveyor (outside the press frame) to the mold centre (inside the press frame) \u2014 a distance that spans the press’s platen width plus the clearance needed for the loader arm to clear the tie bars or the dome structure. On large presses, this swing distance can approach 2 metres.<\/p>\n

The cylinder must coordinate with the mold opening\/closing cylinder (#30): the loader arm can only swing in after the dome is fully raised, and must swing out before the dome begins lowering. These interlocks are sequenced by the press controller \u2014 the loading\/unloading cylinder’s position sensor confirms “arm clear” before the dome descent is permitted.<\/p>\n<\/p><\/div>\n

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

<\/p>\n

\n

Green Tire vs Cured Tire \u2014 The Same Arm Handles Two Very Different Objects<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Property<\/th>\nGreen Tire (Loading)<\/th>\nCured Tire (Unloading)<\/th>\n<\/tr>\n<\/thead>\n
Temperature<\/td>\nRoom temperature<\/td>\n150\u2013180 \u00b0C<\/td>\n<\/tr>\n
Stiffness<\/td>\nSoft, easily deformed<\/td>\nRigid, holds shape<\/td>\n<\/tr>\n
Surface<\/td>\nTacky (uncured rubber)<\/td>\nDry, release-agent coated<\/td>\n<\/tr>\n
Weight<\/td>\n8\u201312 kg (passenger)<\/td>\n9\u201315 kg (densified)<\/td>\n<\/tr>\n
Handling risk<\/td>\nDeformation \u2192 defect<\/td>\nBurns \u2192 safety hazard<\/td>\n<\/tr>\n
Speed priority<\/td>\nGentle > fast<\/td>\nFast > gentle<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

The cylinder’s speed profile changes between loading and unloading: slower and more controlled during loading (protecting the green tire’s shape), faster during unloading (minimising mold heat loss). The press controller adjusts the proportional valve flow for each operation separately.<\/p>\n<\/section>\n

<\/p>\n

\n \"Loading\/unloading
\n<\/section>\n

<\/p>\n

\n

Manufacturing \u2014 Small Bore, Long Stroke, Fast Cycling<\/h2>\n
\n \"Korea<\/p>\n

The 63\u2013100 mm bore with \u22642,000 mm stroke creates a slender cylinder that must resist lateral loading from the cantilevered loader arm. The loader arm’s weight (plus the tire) applies a bending moment at the cylinder rod end \u2014 which translates to a side load on the rod guide bearing. Korea Ever-Power specifies an oversized guide bearing length for the loading\/unloading cylinder \u2014 longer than standard for a 63\u2013100 mm bore \u2014 to distribute this side load and prevent eccentric seal wear.<\/p>\n

The cylinder operates in the thermal zone between the hot open mold (below) and the warm press frame (around) \u2014 ambient temperature 40\u201380 \u00b0C at the cylinder’s mounting position. FKM seals are standard. Chrome plating is 50 \u00b5m. The bore is honed to Ra 0.2\u20130.4 \u00b5m over the full 2,000 mm stroke. End-of-stroke cushions at both positions (swing-in and swing-out) prevent impact loads on the loader arm stops.<\/p>\n

Every loading\/unloading cylinder is hydrostatic tested at 1.5\u00d7 working pressure and speed-tested for full extend and retract at the specified cycle time \u2014 verifying that the cylinder completes the full 2,000 mm stroke within the press builder’s target loader arm cycle time.<\/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

Loader arm geometry (swing radius, arm length, tire grip weight), maximum tire weight (green and cured), required cycle time (load + unload combined), stroke, mounting orientation, ambient temperature at the cylinder position, and the loader arm assembly drawing. Optionally combined with the complete vulcanizing press cylinder set for guaranteed system compatibility.<\/p>\n<\/div><\/div>\n

\n
\n

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

Engineering drawing with bore, rod, stroke, oversized guide bearing (for cantilevered loader arm side-load), FKM seal specification, cushion detail for both swing positions, and mounting dimensions. Hydrostatic + speed test at target cycle time. Seal kits. Browse the complete vulcanizing machine cylinder family<\/a> and the full hydraulic cylinder product range<\/a>.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n<\/section>\n

<\/p>\n

\n

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

Does the cylinder handle the tire gripping (clamping the tire in the loader arm)?<\/h3>\n

No \u2014 the loading\/unloading cylinder provides the arm’s swing and\/or lift motion. The tire grip (the claws or pads that hold the tire inside the loader arm) is typically operated by a separate smaller cylinder or a pneumatic actuator mounted on the arm head. The loading\/unloading cylinder moves the entire arm assembly including the grip mechanism.<\/p>\n<\/p><\/div>\n

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How does the loader arm coordinate with the dome opening?<\/h3>\n

Through position-sensor interlocks: the mold opening cylinder<\/a> (#30) must confirm “dome fully raised” before the loading\/unloading cylinder is permitted to swing in. The loading\/unloading cylinder must confirm “arm fully retracted” before the mold opening cylinder is permitted to lower the dome. These interlocks prevent the arm from colliding with the descending dome \u2014 a collision that would damage the loader arm, the dome, and the green tire.<\/p>\n<\/p><\/div>\n

\n

Can the loading\/unloading cylinder serve truck tire presses?<\/h3>\n

The standard bore range (63\u2013100 mm) is designed for passenger car and light truck tire presses where tire weight is 8\u201325 kg. Heavy truck tires (50\u201380 kg) and OTR tires (200+ kg) require larger-bore loading\/unloading cylinders with more force and modified loader arm geometry. Korea Ever-Power engineers custom bore, rod, and stroke for large-tire presses. Browse forklift cylinders<\/a> and telescopic cylinders<\/a> for other material-handling applications.<\/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":"

Loading and unloading tires hydraulic cylinder for vulcanizing machine \u2014 the material-handling actuator that drives the loader arm to place uncured green tires into the open mold and remove cured tires after vulcanization. The only cylinder on the press that handles the tire in both states: the soft, tacky, easily deformed green tire going in, and the stiff, hot (150\u2013180 \u00b0C), fully cured tire coming out. Every second of loader arm cycle time is a second the press is idle \u2014 the loading\/unloading cylinder directly determines the machine’s production rate. Bore 63\u2013100 mm, stroke \u22642,000 mm, thrust 164 KN at 21 MPa. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2427,"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-2426","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\/bg\/wp-json\/wp\/v2\/product\/2426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/comments?post=2426"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/media\/2427"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/media?parent=2426"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/product_brand?post=2426"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/product_cat?post=2426"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/bg\/wp-json\/wp\/v2\/product_tag?post=2426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}