{"id":2296,"date":"2026-06-29T05:41:47","date_gmt":"2026-06-29T05:41:47","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/?post_type=product&p=2296"},"modified":"2026-06-29T05:41:47","modified_gmt":"2026-06-29T05:41:47","slug":"factory-direct-sale-2-stage-small-hydraulic-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/ceb\/product\/factory-direct-sale-2-stage-small-hydraulic-cylinder\/","title":{"rendered":"Factory Direct Sale 2 Stage Small Hydraulic Cylinder"},"content":{"rendered":"
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SURFACE TREATMENT GUIDE<\/span>
\n2-STAGE \u00b7 FACTORY DIRECT<\/span><\/div>\n

2 Stage Small
\nTelescopic Cylinder
\nSurface Treatments \u2014 Plunger Chrome + Barrel Finish<\/span><\/h2>\n

A telescopic hydraulic cylinder<\/a> has two distinct surface treatment zones: the plunger (functional \u2014 affects seal life and performance) and the barrel exterior (protective \u2014 affects corrosion resistance and appearance). Understanding both zones helps you specify the right finish for your operating environment and your customer’s expectations.<\/p>\n<\/div>\n

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2 Stage<\/div>\n
Simplest Config<\/div>\n<\/div>\n
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Surface<\/div>\n
Treatment Options<\/div>\n<\/div>\n
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2\u20136\u2033<\/div>\n
Bore<\/div>\n<\/div>\n
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Factory<\/div>\n
Direct<\/div>\n<\/div>\n<\/div>\n
Chrome Plunger<\/span>
\nPaint \/ Zinc \/ Powder Coat<\/span>
\nISO 9001<\/span><\/div>\n
<\/div>\n
\"Small<\/div>\n<\/div>\n<\/div>\n

Korea Ever-Power produces this 2-stage small telescopic cylinder with hard chrome plungers as standard and a choice of barrel exterior finishes. The 2-stage configuration is the simplest telescopic design \u2014 one outer barrel and one inner plunger \u2014 which makes surface treatment particularly visible: the plunger is fully exposed during extension, and the barrel exterior is the most prominent visual element of the installed cylinder. Getting both surface treatments right matters for function, durability, and the professional appearance of your finished vehicle or equipment.<\/p>\n<\/section>\n

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2 Stage Small Cylinder \u2014 Parameters<\/h2>\n
\n\n\n\n\n\n\n\n\n
Stage Count<\/td>\n2 stages (outer barrel + 1 inner plunger)<\/td>\n<\/tr>\n
Bore \/ Rod \/ Stroke \/ Pin<\/td>\n2\u20136\u2033 \/ 1.125\u20134\u2033 \/ 4\u2013100\u2033 \/ 0.5\u20132\u2033<\/td>\n<\/tr>\n
Plunger Treatment<\/td>\nHard chrome plating (standard) \u2014 20\u201330 \u00b5m thickness<\/td>\n<\/tr>\n
Barrel Exterior Options<\/td>\nIndustrial paint \u00b7 Zinc plating \u00b7 Powder coat \u00b7 Custom colour<\/td>\n<\/tr>\n
Port Options<\/td>\nG \/ SAE \/ NPT \/ M<\/td>\n<\/tr>\n
Certification \/ Lead Time<\/td>\nISO 9001 \/ 25\u201335 days \/ 1-year warranty<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

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Plunger Surface \u2014 Hard Chrome Plating Is Not Optional<\/h2>\n

The plunger surface is where the rod seal and wiper seal contact the cylinder during every extension and retraction stroke. This surface must be hard (to resist scratching from dust particles), smooth (to allow the seal lip to glide without excessive friction), and corrosion-resistant (to prevent rust pitting that would cut the seal). Hard chrome plating provides all three properties \u2014 it is an engineering requirement, not a cosmetic upgrade.<\/p>\n

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Hardness: 65\u201372 HRC<\/strong><\/p>\n

Hard chrome plating typically achieves 65\u201372 HRC surface hardness \u2014 significantly harder than the base steel of the plunger (typically 25\u201335 HRC). This hardness resists micro-scratching from dust particles that enter past the wiper seal. A scratched plunger progressively cuts the rod seal lip, leading to external leakage. The harder the plunger surface, the longer it resists this degradation.<\/p>\n<\/div>\n

Thickness: 20\u201330 \u00b5m Standard<\/strong><\/p>\n

Korea Ever-Power applies 20\u201330 \u00b5m (0.020\u20130.030 mm) of hard chrome to each plunger surface as standard. This thickness provides adequate wear life for typical dump truck service (3\u20135 years at normal duty cycles). For extreme-abrasion environments (quarries, mining) or extended service intervals, thicker chrome (40\u201350 \u00b5m) is available on request \u2014 adding 2\u20135 days to the production schedule for the additional plating time.<\/p>\n<\/div>\n

Micro-Finish After Chrome: Ground and Polished<\/strong><\/p>\n

After chrome plating, the plunger surface is ground and polished to the target surface finish \u2014 the same cross-hatch specification required by the seal manufacturer. The chrome plating creates a slightly rougher surface than the base steel, so post-chrome grinding is essential to restore the finish to the correct range. Skipping this step (shipping with as-plated chrome) results in accelerated seal wear from the rough chrome surface \u2014 a common shortcut on low-quality cylinders.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Barrel Exterior \u2014 Four Protection Options<\/h2>\n

The barrel exterior is exposed to the operating environment \u2014 rain, road salt, mud, chemical splash, UV radiation, and mechanical impact. The surface treatment determines how long the barrel resists corrosion and how the cylinder looks on the finished vehicle. Korea Ever-Power offers four exterior treatment levels, ranging from basic industrial paint to premium powder coat.<\/p>\n

\"Telescopic<\/p>\n

\n\n\n\n\n\n\n\n\n
Treatment<\/th>\nCorrosion Protection<\/th>\nAppearance<\/th>\nImpact Resistance<\/th>\nCost<\/th>\n<\/tr>\n<\/thead>\n
Industrial paint (standard)<\/td>\nGood<\/td>\nStandard<\/td>\nModerate<\/td>\nIncluded<\/td>\n<\/tr>\n
Zinc plating<\/td>\nVery good<\/td>\nBright metallic<\/td>\nModerate<\/td>\n+5\u201310%<\/td>\n<\/tr>\n
Powder coat<\/td>\nVery good<\/td>\nPremium finish<\/td>\nHigh<\/td>\n+8\u201315%<\/td>\n<\/tr>\n
Zinc + paint (duplex)<\/td>\nExcellent<\/td>\nCustomisable colour<\/td>\nGood<\/td>\n+10\u201318%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Industrial Paint \u2014 The Default<\/strong><\/p>\n

Two-coat system: primer + topcoat. Standard colour is typically black or dark grey unless a custom colour is specified. Adequate corrosion protection for most applications where the cylinder is mounted under the vehicle and not directly exposed to saltwater or continuous chemical splash. This is the included finish \u2014 no additional cost.<\/p>\n<\/div>\n

Powder Coat \u2014 Premium Appearance<\/strong><\/p>\n

Electrostatically applied dry powder, oven-cured to a hard, even finish. Thicker than paint (60\u201380 \u00b5m vs 25\u201340 \u00b5m), more resistant to chipping and scratching, and available in any RAL colour for brand matching. Powder coat is the preferred finish for OEM vehicle builders who want the cylinder to match the vehicle colour scheme and present a professional appearance to end customers. The higher impact resistance also makes powder coat practical for cylinders exposed to stone chips and debris from dump truck operations.<\/p>\n<\/div>\n<\/div>\n

Custom colour matching: <\/strong>
\nKorea Ever-Power can match any RAL colour for paint or powder coat. OEM body builders who need the cylinder barrel to match the truck colour (e.g. Caterpillar yellow, Volvo blue-grey, Liebherr white) \u2014 provide the RAL code or a paint sample when ordering. Custom colour adds no cost for paint and approximately 3\u20135% for powder coat. Browse the full custom hydraulic cylinder range<\/a> for all finish options.<\/span><\/div>\n<\/section>\n

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OEM & ODM \u2014 Specifying Surface Treatment<\/h2>\n
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What You Provide<\/h3>\n<\/div>\n
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Bore, rod, stroke, 2-stage, mounting type, port thread, working pressure \u2014 plus surface treatment: plunger chrome thickness (standard 20\u201330 \u00b5m or heavy 40\u201350 \u00b5m), barrel finish (paint\/zinc\/powder coat\/duplex), and colour (RAL code or “standard”). For OEM branded vehicles: provide RAL code for colour-matched powder coat.<\/p>\n<\/div>\n<\/div>\n

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What the Factory Delivers<\/h3>\n<\/div>\n
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Drawing with confirmed surface specs. Samples available (useful for colour approval on powder coat). Production 25\u201335 days (add 2\u20135 days for heavy chrome or non-standard powder coat colour). 100% pressure test with certificate. 1-year warranty. Contact the telescopic cylinder manufacturer<\/a> for quotation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\"2<\/p>\n

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Surface Treatment FAQ<\/h2>\n
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Can I skip the chrome plating to reduce cost?<\/h3>\n

No. A telescopic cylinder without chrome-plated plungers will fail within weeks \u2014 the bare steel plunger will corrode, scratch the seals, and develop surface pitting that causes permanent leakage. Chrome plating is included in every Korea Ever-Power cylinder as a non-negotiable standard. It is not a cost-reduction lever \u2014 it is a functional requirement. The only legitimate choice is the chrome thickness (standard vs heavy duty).<\/p>\n<\/div>\n

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My previous cylinder’s barrel paint peeled off within 6 months \u2014 why?<\/h3>\n

Paint adhesion failure is caused by inadequate surface preparation before painting \u2014 insufficient cleaning, degreasing, or blast profiling of the steel surface. The paint sits on top of a contaminated surface and peels away in sheets. Korea Ever-Power’s paint process includes shot-blasting to SA 2.5 cleanliness before primer application \u2014 creating a mechanical key between the steel and the paint. If you have experienced paint adhesion issues with a previous supplier, specify “shot-blast + primer + topcoat” or upgrade to powder coat, which has inherently better adhesion due to the electrostatic application and thermal cure process.<\/p>\n<\/div>\n

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Is zinc plating or powder coat better for coastal\/marine environments?<\/h3>\n

Duplex (zinc + paint) is the best option for saltwater environments \u2014 the zinc provides sacrificial corrosion protection (protects even if the paint is damaged), and the paint provides the barrier layer. Powder coat alone is excellent for impact and appearance but does not provide sacrificial protection \u2014 once the powder coat is chipped, corrosion begins at the exposed steel. For marine-adjacent dump trucks and coastal construction, duplex zinc + paint or zinc + powder coat delivers the longest corrosion-free service life.<\/p>\n<\/div>\n

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Does surface treatment affect the retracted length?<\/h3>\n

Negligibly. Chrome plating adds 20\u201350 \u00b5m to the plunger diameter (0.02\u20130.05 mm) \u2014 well within the bore clearance tolerance. Paint and powder coat add 25\u201380 \u00b5m to the barrel exterior diameter \u2014 which does not affect the internal dimensions or the retracted length. Surface treatment has no practical impact on cylinder dimensions or fit. The forklift cylinder range<\/a> and aerial work vehicle cylinder range<\/a> use the same surface treatment options.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Field Reports<\/h2>\n
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T<\/div>\n
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Tom S. \u2014 OEM Tipper Builder<\/div>\n
Verified Purchase \u00b7 UK \u00b7 May 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

We specified RAL 5010 (gentian blue) powder coat on the barrel to match our tipper brand colour. Ever-Power matched it perfectly \u2014 the cylinder looks like it was made by our company. The powder coat finish is noticeably harder than paint \u2014 after 8 months of construction site duty, no chips or scratches. The chrome plunger surface is smooth and mirror-bright even after 8 months of daily cycling. Appearance matters to our customers and the surface treatment quality delivers. 2-stage, 3-inch bore, 15 units.<\/p>\n<\/div>\n

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J<\/div>\n
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Jorge R. \u2014 Coastal Construction Fleet<\/div>\n
Verified Purchase \u00b7 Portugal \u00b7 March 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2605<\/div>\n<\/div>\n

Our dump trucks work on coastal construction sites \u2014 saltwater spray, sand, and high humidity year-round. We specified duplex treatment: zinc plating + paint on the barrel exterior, and heavy chrome (40 \u00b5m) on the plungers. After 10 months of coastal duty, no corrosion on any of the 8 cylinders. Our previous supplier’s paint-only cylinders showed visible rust bubbles within 4 months in the same environment. The duplex zinc + paint is the right treatment for salt environments \u2014 well worth the 15% premium.<\/p>\n<\/div>\n

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A<\/div>\n
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Alex K. \u2014 Quarry Heavy Duty<\/div>\n
Verified Purchase \u00b7 February 2025<\/div>\n<\/div>\n
\u2605\u2605\u2605\u2605\u2606<\/div>\n<\/div>\n

Ordered 2-stage cylinders for quarry dump trucks with standard chrome thickness (25 \u00b5m) and standard paint. Four stars because the standard chrome showed visible wear marks at 10 months in our extreme abrasion environment \u2014 the quarry dust is highly abrasive. I’ve now reordered with heavy chrome (45 \u00b5m) on the replacement batch. The standard chrome is fine for normal construction and road hauling, but quarry-grade abrasion needs the thicker option. The surface treatment guide on this page would have saved me the first order if I’d read it carefully \u2014 the 40\u201350 \u00b5m recommendation for extreme abrasion was correct.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Other Hydraulic Cylinder Categories<\/h2>\n
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\"Forklift\"<\/p>\n

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Forklift Hydraulic Cylinder Range \u2192<\/a><\/h3>\n

HCYY OEM \u2014 chrome plated rods standard.<\/p>\n<\/div>\n<\/div>\n

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\"AWV\"<\/p>\n

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Aerial Platform Cylinder Series \u2192<\/a><\/h3>\n

15 types \u2014 powder coat available on all models.<\/p>\n<\/div>\n<\/div>\n

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\"All\"<\/p>\n

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Hydraulic Cylinder Factory \u2014 All Finishes \u2192<\/a><\/h3>\n

Custom colour, chrome options, corrosion packages.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"
2-stage small telescopic hydraulic cylinder \u2014 factory direct, with a guide to surface treatment options. The surface treatment on the barrel exterior and the plunger surface determines how the cylinder resists corrosion, how long the paint lasts, and how the plunger interacts with the seals. Chrome plating on the plunger is an engineering requirement, not cosmetic \u2014 it creates the hard, smooth surface the seal lip rides on. The barrel exterior surface treatment (paint, zinc, powder coat) is corrosion protection that determines how the cylinder looks and lasts in your operating environment.<\/div>","protected":false},"featured_media":2273,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[851],"product_tag":[],"class_list":["post-2296","product","type-product","status-publish","has-post-thumbnail","product_cat-telescopic-hydraulic-cylinder","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/product\/2296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/comments?post=2296"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/media\/2273"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/media?parent=2296"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/product_brand?post=2296"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/product_cat?post=2296"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/ceb\/wp-json\/wp\/v2\/product_tag?post=2296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}