{"product_id":"20t-4in-hollow-hydraulic-cylinder-jack-compact-20-us-ton","title":"20T 4in Hollow Hydraulic Cylinder Jack - Compact 20 US Ton","description":"\u003cp\u003eIn this review of the 20T 4in Hollow Hydraulic Cylinder Jack the bottom line is clear: this is a compact, high-capacity ram for technicians who need heavy lifting in tight spaces. It is best for riggers, fabricators, welders and automotive body shops that require a small footprint tool with a 20 US ton capacity and a 4in stroke. The single acting, pressure-extend and spring-return design paired with a hard black oxide plated ram make it a practical lifting solution where reach and durability matter, though users should be aware of mixed reports on sealing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 US Ton Capacity:\u003c\/strong\u003e Provides substantial lifting force for heavy equipment tasks like bushing replacement and frame alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4in Stroke Hollow Ram:\u003c\/strong\u003e The hollow center allows for working over a protruding rod or bolt, making it useful in constrained assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8in NPT CR-400 Coupler:\u003c\/strong\u003e The quick hydraulic coupler with dust cap speeds hookup and keeps contaminants out of the hydraulic circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10,000 PSI Maximum Pressure:\u003c\/strong\u003e High operating pressure ensures the ram delivers reliable extension force for demanding jobs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Materials:\u003c\/strong\u003e Hard black oxide plated high carbon steel ram and heat-treated steel shell improve wear resistance and service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Small overall size is intended for narrow space positioning where larger jacks cannot fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cylinder is aimed at professionals who need a compact yet powerful lifting tool: riggers working under structures, fabricators pressing parts, welders doing alignment, and automotive technicians handling body and frame work. The hollow ram and 4in stroke are especially helpful when a through rod or bolt must remain in place.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for casual DIYers who rarely use hydraulic tools or for applications that demand a two-stage or multi-purpose cylinder with integrated stands. Also consider units with proven leak history if absolute zero leakage is required for critical hydraulic systems.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh 20 US ton capacity in a compact package makes tough lifting tasks easier in tight spaces.\u003c\/li\u003e\n\u003cli\u003eHollow 4in stroke design increases versatility when working over existing rods or bolts.\u003c\/li\u003e\n\u003cli\u003eDurable construction with plated steel ram and heat-treated shell improves longevity in shop environments.\u003c\/li\u003e\n\u003cli\u003eQuick-connect CR-400 coupler with dust cap streamlines hookup and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed sealing performance, including occasional leakage on first use, so inspect seals before critical jobs.\u003c\/li\u003e\n\u003cli\u003eSingle acting means a separate pump or pressure source is required to extend the ram; no powered retract option beyond spring return.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e20 US Ton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e4 in (100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003e3\/8 in NPT CR-400 quick hydraulic coupler with dust cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Pressure\u003c\/td\u003e\n\u003ctd\u003e10,000 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAction\u003c\/td\u003e\n\u003ctd\u003eSingle acting - pressure extend, spring return\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRam Finish\u003c\/td\u003e\n\u003ctd\u003eHard black oxide plated high carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell\u003c\/td\u003e\n\u003ctd\u003eProprietary heat-treated steel shell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 20T 4in Hollow Hydraulic Cylinder Jack is a strong, compact choice for professionals who need high lifting capacity in confined spaces; its durable materials and hollow ram add real-world versatility. Buyers who prioritize absolute leak-free performance should inspect seals on receipt, but for most rigging and shop tasks this cylinder delivers solid value and capability.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this cylinder suitable for automotive bushing replacement?\u003c\/strong\u003e\u003cbr\u003eThe 20 US ton capacity and compact hollow ram make it well suited for heavy bushing and suspension work where space is limited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include a coupler and dust cap?\u003c\/strong\u003e\u003cbr\u003eYes, it uses a 3\/8 in NPT CR-400 quick hydraulic coupler and ships with a dust cap to protect the connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the ram retract without a pump?\u003c\/strong\u003e\u003cbr\u003eIt is single acting with spring return, so it retracts via the internal spring but requires hydraulic pressure from a pump to extend.\u003c\/p\u003e","brand":"AMZCNC","offers":[{"title":"Default Title","offer_id":48240166404315,"sku":"B097GS8V11","price":198.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/617_r18iabL._SL1500_5f1bb21b-18f4-4277-9952-e24712df4dc1.jpg?v=1771097506","url":"https:\/\/gearmusthave.com\/products\/20t-4in-hollow-hydraulic-cylinder-jack-compact-20-us-ton","provider":"GearMustHave","version":"1.0","type":"link"}