{"id":3076,"date":"2026-10-08T17:17:06","date_gmt":"2026-10-08T17:17:06","guid":{"rendered":"https:\/\/yocl.com\/?wpr2_import=f3cf868671a231d98b66f6eb712a054384fe3fa739e3bd359eb2729d03ed3a2b"},"modified":"2026-10-08T17:17:06","modified_gmt":"2026-10-08T17:17:06","slug":"2-1-vs-3-1-vs-4-1-heat-shrink-tubing","status":"publish","type":"post","link":"https:\/\/yocl.com\/tr\/2-1-vs-3-1-vs-4-1-heat-shrink-tubing\/","title":{"rendered":"2:1 - 3:1 - 4:1 Is\u0131yla Daralan Makaron: Hangi Daralma Oran\u0131na \u0130htiyac\u0131n\u0131z Var?"},"content":{"rendered":"<p><strong>Boru makaran\u0131n k\u00f6pr\u00fclemesi gereken \u00e7ap ge\u00e7i\u015finden b\u00fcz\u00fclme oran\u0131n\u0131 se\u00e7in.<\/strong> Sa\u011flanan i\u00e7 \u00e7ap\u0131 en b\u00fcy\u00fck \u00f6zelli\u011fi temizlemeli ve serbest\u00e7e geri kazan\u0131lm\u0131\u015f i\u00e7 \u00e7ap\u0131 kavramas\u0131 gereken en dar y\u00fczeyden daha k\u00fc\u00e7\u00fck olmal\u0131d\u0131r. Uygun bir 2:1 boyutu bu i\u015fi zaten tamamlayabilir. Ger\u00e7ek boyutlar daha geni\u015f bir geri kazan\u0131m aral\u0131\u011f\u0131 gerektirdi\u011finde 3:1 veya 4:1'i g\u00f6z \u00f6n\u00fcnde bulundurun.<\/p>\n<p>Daha y\u00fcksek oran tek ba\u015f\u0131na yap\u0131\u015fkan, s\u0131zd\u0131rmaz bir ba\u011flant\u0131 veya daha y\u00fcksek bir elektriksel de\u011fer sa\u011flamaz. \u00d6nce geometriyi kar\u015f\u0131la\u015ft\u0131r\u0131n, ard\u0131ndan kesin \u00fcr\u00fcn\u00fcn yap\u0131s\u0131n\u0131 ve g\u00f6revini kontrol edin.<\/p>\n<h2>Ayn\u0131 geometri \u00fczerinde 2:1, 3:1 ve 4:1'i kar\u015f\u0131la\u015ft\u0131r\u0131n<\/h2>\n<p>B\u00fcz\u00fclme oran\u0131, nominal ili\u015fkiyi tan\u0131mlar <strong>geni\u015fletilmi\u015f i\u00e7 \u00e7ap (ID)<\/strong> ve <strong>serbest\u00e7e geri kazan\u0131lm\u0131\u015f ID<\/strong>. \u0130dealize edilmi\u015f aritmetik i\u00e7in:<\/p>\n<p><strong>Serbest toparlanma i\u00e7 \u00e7ap\u0131 = geni\u015fletilmi\u015f i\u00e7 \u00e7ap\u0131 \u00f7 oran say\u0131s\u0131<\/strong><\/p>\n<p>Ayn\u0131 varsay\u0131msal 15 mm geni\u015fletilmi\u015f i\u00e7 \u00e7ap\u0131 ile, 2:1 sonucu 7.5 mm, 3:1 sonucu 5 mm ve 4:1 sonucu 3.75 mm verir. Bunlar, toparlanmay\u0131 k\u0131s\u0131tlayan dahili bir nesne olmaks\u0131z\u0131n g\u00f6sterim ama\u00e7l\u0131 u\u00e7 noktalard\u0131r, \u00fc\u00e7 katalog \u00fcr\u00fcn\u00fcn\u00fcn garanti edilen boyutlar\u0131 de\u011fildir. Oran, \u00e7ap toparlanmas\u0131n\u0131 tan\u0131mlar; kesilmi\u015f uzunlu\u011fu b\u00f6lmez veya duvar say\u0131s\u0131n\u0131 belirlemez. Bu <a href=\"https:\/\/yocl.com\/tr\/what-is-heat-shrink-tubing\/\">\u0131s\u0131 ile daralan makaron terminoloji k\u0131lavuzu<\/a> bu ayr\u0131 alanlar\u0131 a\u00e7\u0131klar.<\/p>\n<figure class=\"wp-block-image\">\n<img decoding=\"async\" src=\"https:\/\/yocl.com\/wp-content\/uploads\/2026\/10\/2-1-vs-3-1-vs-4-1-heat-shrink-tubing-ratio-comparison.webp\" alt=\"Hypothetical 15 mm expanded bore compared with 7.5, 5 and 3.75 mm freely recovered bores for 2:1, 3:1 and 4:1 tubing\"><figcaption>Kavramsal, \u00f6l\u00e7ekli de\u011fil. Ortak bir 15 mm geni\u015fletilmi\u015f i\u00e7 \u00e7ap\u0131 i\u00e7in nominal aritmetik. Bo\u015f toparlanm\u0131\u015f i\u00e7 \u00e7aplar\u0131 serbest toparlanmay\u0131 g\u00f6sterir; ger\u00e7ek \u00fcr\u00fcn s\u0131n\u0131rlar\u0131 hala boyut se\u00e7imini y\u00f6netir.<\/figcaption><\/figure>\n<p>\u015eimdi makaronun \u00fczerinden ge\u00e7mesi gereken en b\u00fcy\u00fck yuvarlak \u00f6zelli\u011fi tutun <strong>13 mm d\u0131\u015f \u00e7ap (OD)<\/strong>. \u00fczerinde. Sadece \u00fczerine oturmas\u0131 gereken en k\u00fc\u00e7\u00fck yuvarlak y\u00fczeyi de\u011fi\u015ftirin. Varsay\u0131msal \u00fc\u00e7 makaron da ayn\u0131 15 mm i\u00e7 \u00e7ap\u0131 ile ba\u015flar, bu nedenle kar\u015f\u0131la\u015ft\u0131rma toparlanma aral\u0131klar\u0131n\u0131 izole eder.<\/p>\n<table>\n<thead>\n<tr>\n<th>En k\u00fc\u00e7\u00fck ini\u015f d\u0131\u015f \u00e7ap\u0131<\/th>\n<th>2:1: bo\u015f kimlik 7.5 mm<\/th>\n<th>3:1: bo\u015f kimlik 5 mm<\/th>\n<th>4:1: bo\u015f kimlik 3.75 mm<\/th>\n<th>Bu varsay\u0131mlar alt\u0131nda yeterli oran<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>9 mm<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>\u00dc\u00e7\u00fc de; 2:1 zaten geometrik olarak yeterlidir<\/td>\n<\/tr>\n<tr>\n<td>6 mm<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>3:1 veya 4:1; 3:1 geometrik olarak zaten yeterlidir<\/td>\n<\/tr>\n<tr>\n<td>4.5 mm<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>\u0130ni\u015f d\u0131\u015f \u00e7ap\u0131n\u0131n alt\u0131nda<\/td>\n<td>4:1 yaln\u0131zca<\/td>\n<\/tr>\n<tr>\n<td>3 mm<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>\u00c7ok b\u00fcy\u00fck<\/td>\n<td>Bu \u00fc\u00e7 adaydan hi\u00e7biri<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Bu bir <strong>kontroll\u00fc varsay\u0131msal kar\u015f\u0131la\u015ft\u0131rmad\u0131r<\/strong>, onaylanm\u0131\u015f bir boyut listesi de\u011fildir. Varsay\u0131lan geni\u015fletilmi\u015f delik ile ge\u00e7i\u015f d\u0131\u015f \u00e7ap\u0131 aras\u0131ndaki 2 mm fark\u0131, \u00f6nerilen bir bo\u015fluk de\u011fil, \u00f6rnek bir bo\u015fluktur. Ger\u00e7ek toleranslar, kurulum pay\u0131 ve izin verilen uygulama aral\u0131\u011f\u0131 kontrol edilmelidir.<\/p>\n<p>Son sat\u0131r \u00f6nemlidir: 4:1 bile yetersiz olabilir. Daha y\u00fcksek bir oran nominal aral\u0131\u011f\u0131 geni\u015fletir, ancak hi\u00e7bir etiket her ge\u00e7i\u015fte uyumu garanti etmez. Tersine, ilk sat\u0131r, 4:1 mevcut oldu\u011fu i\u00e7in 2:1'\u00fc reddetmek i\u00e7in geometrik bir neden vermez.<\/p>\n<h2>Oran aday\u0131n\u0131 kesin bir t\u00fcp boyutuna d\u00f6n\u00fc\u015ft\u00fcr\u00fcn<\/h2>\n<p>Yuvarlak par\u00e7alar ve a\u00e7\u0131k u\u00e7lu t\u00fcpler i\u00e7in, her iki s\u0131n\u0131r\u0131 da \u015furadan kontrol edin <strong>tek tam boyut s\u0131ras\u0131<\/strong>:<\/p>\n<ul>\n<li><strong>Minimum supplied ID &gt; largest pass-over OD<\/strong><\/li>\n<li><strong>Maximum freely recovered ID &lt; smallest landing OD<\/strong><\/li>\n<\/ul>\n<p>NASA\u2019n\u0131n <a href=\"https:\/\/standards.nasa.gov\/sites\/default\/files\/standards\/KSC\/F\/KSC-E-165-REV-F.pdf\" target=\"_blank\" rel=\"noopener\">KSC-E-165 Revizyon F, \u00a73.8.1.1.1(a)<\/a> uses this expanded-larger\/recovered-smaller principle within Kennedy Space Center electrical ground-support-equipment fabrication. It supports the dimensional relationship, without approving a YOCL product or assembly.<\/p>\n<p>Retain the table&#8217;s minimum, maximum and \u00b1 signs, component tolerances and specified application allowance. Equality supplies no assured margin. A model&#8217;s stated application range may further restrict the usable diameters, even where the preliminary inequalities pass.<\/p>\n<p>If you increase the supplied size to clear a connector, recheck the recovered limit of that larger row. Changing the first diameter can also change the second. Use the <a href=\"https:\/\/yocl.com\/tr\/heat-shrink-tubing-size-chart\/\">\u0131s\u0131 b\u00fcz\u00fc\u015fmeli makaron boyut tablosu<\/a> for the full lookup and limit conventions.<\/p>\n<h3>Free recovery is different from installed fit<\/h3>\n<p>A sleeve installed over a cable stops contracting against the surface inside it. In the hypothetical 4:1 example, a 4.5 mm jacket prevents the bore reaching its empty 3.75 mm endpoint. The endpoint therefore does not specify installed ID, outside diameter or wall thickness.<\/p>\n<figure class=\"wp-block-image\">\n<img decoding=\"async\" src=\"https:\/\/yocl.com\/wp-content\/uploads\/2026\/10\/2-1-vs-3-1-vs-4-1-heat-shrink-tubing-installed-fit.webp\" alt=\"Conceptual comparison of an empty 3.75 mm freely recovered bore and the same nominal 4:1 sleeve constrained by a 4.5 mm cable jacket\"><figcaption>Hypothetical 4:1 example: an internal jacket restricts recovery. Schematic wall thickness is illustrative; the free-recovery bore does not determine installed outside diameter.<\/figcaption><\/figure>\n<p>For a sleeve spanning several surfaces, check the smallest required landing as well as the largest feature it crosses. Irregular connectors, flat busbars, bundles and branches need their actual envelope and contact geometry reviewed; one round OD cannot describe every gap or valley.<\/p>\n<h2>A real YOCL 3:1 vs 4:1 comparison<\/h2>\n<p>Bu <a href=\"https:\/\/yocl.com\/tr\/product\/3-1-zero-halogen-single-wall-heat-shrink-tubing\/\">3:1 Zero-Halogen single-wall product<\/a> ve <a href=\"https:\/\/yocl.com\/tr\/product\/4-1-zero-halogen-single-wall-heat-shrink-tubing\/\">4:1 Zero-Halogen single-wall product<\/a> offer a useful same-construction comparison. Both declare no internal adhesive. Their 20 mm supplied-bore entries have different recovered limits:<\/p>\n<table>\n<thead>\n<tr>\n<th>Yay\u0131nlanm\u0131\u015f alan<\/th>\n<th>3:1 single wall<\/th>\n<th>4:1 single wall<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Size entry<\/td>\n<td>20.0\/6.7 mm<\/td>\n<td>20.0\/5.0 mm<\/td>\n<\/tr>\n<tr>\n<td>Minimum supplied ID<\/td>\n<td>20.0 mm<\/td>\n<td>\u226520.0 mm<\/td>\n<\/tr>\n<tr>\n<td>Maximum ID after recovery<\/td>\n<td>6.7 mm<\/td>\n<td>\u22645.0 mm<\/td>\n<\/tr>\n<tr>\n<td>Dahili yap\u0131\u015ft\u0131r\u0131c\u0131<\/td>\n<td>Yok<\/td>\n<td>Yok<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>These are manufacturer declarations from the respective dimension tables, checked 9 October 2026. The 3:1 page establishes minimum and maximum through its column headings; the 4:1 page also prints the inequalities in each row.<\/p>\n<p>For hypothetical <strong>18 mm pass-over and 6 mm landing<\/strong> dimensions, both supplied minima clear the large feature. The 3:1 row&#8217;s 6.7 mm recovered maximum does not establish contraction below 6 mm; the 4:1 row&#8217;s 5.0 mm maximum does. That makes the latter a dimensional candidate, still subject to allowance and application review. It does not prove a sealed joint.<\/p>\n<p>Keep the published 6.7 mm limit. Replacing it with 20 \u00f7 3 would substitute nominal arithmetic for the actual declaration.<\/p>\n<h2>Check construction and duty alongside the ratio<\/h2>\n<p>The unlined 4:1 example shows why ratio cannot identify adhesive. Where a bonded interface is required, select an appropriate lined product and assess compatibility, contact geometry and sealing evidence. Use the <a href=\"https:\/\/yocl.com\/tr\/single-wall-vs-dual-wall-heat-shrink-tubing\/\">tek duvarl\u0131 ve \u00e7ift duvarl\u0131 kar\u015f\u0131la\u015ft\u0131rmas\u0131n\u0131<\/a> for that decision.<\/p>\n<p>Compare actual wall fields and their measurement states rather than assuming 4:1 is thicker or stronger. Also check coverage and declared longitudinal change, permitted recovery conditions, service temperature, electrical duty and required environmental evidence for the exact grade. Diameter ratio supplies none of those values.<\/p>\n<p>A tight exterior or visible adhesive at an end cannot by itself verify the complete sealing interface. If an installed sleeve is already loose, damaged or has an unverified seal, the <a href=\"https:\/\/yocl.com\/tr\/why-heat-shrink-tubing-splits-or-fails-to-seal\/\">heat-shrink failure guide<\/a> addresses that separate investigation.<\/p>\n<h2>Make the final choice from the products that pass<\/h2>\n<p>Keep 2:1 in consideration when its exact size meets both fit checks and the required function. Move to 3:1 or 4:1 when their documented recovery range solves a transition the lower-ratio candidate cannot cover. If several products pass, compare their construction, installed space, process and duty. If none passes, revise the exact size or connection arrangement instead of assuming extra heat will deliver extra recovery.<\/p>\n<p>For a YOCL size review, provide the largest pass-over dimension, smallest landing dimension, required coverage, jacket material and intended duty through the <a href=\"https:\/\/yocl.com\/tr\/heat-shrink-tubing-manufacturer\/#range\">\u0131s\u0131 b\u00fcz\u00fc\u015fmeli boru \u00fcr\u00fcn yelpazesi<\/a>. Request the matching size limits, permitted application range and installation information so the final selection identifies a product and size, not just \u201c4:1 heat shrink.\u201d<\/p>\n<h2>Referanslar<\/h2>\n<ul>\n<li>NASA Kennedy Uzay Merkezi \u2014 <a href=\"https:\/\/standards.nasa.gov\/sites\/default\/files\/standards\/KSC\/F\/KSC-E-165-REV-F.pdf\" target=\"_blank\" rel=\"noopener\">KSC-E-165 Revision F, 20 December 2021<\/a>, <em>Electrical Ground Support Equipment Fabrication, Specification for<\/em>. \u00a73.8.1.1.1(a), printed page 59; scoped expanded\/recovered size principle.<\/li>\n<li>YOCL \u00fcr\u00fcn bilgileri \u2014 <a href=\"https:\/\/yocl.com\/tr\/product\/3-1-zero-halogen-single-wall-heat-shrink-tubing\/\">3:1 Halojensiz Tek Cidarl\u0131 Is\u0131yla Daralan Makaron<\/a>. 20.0\/6.7 mm row, dimension headings and absence of adhesive; checked 9 October 2026.<\/li>\n<li>YOCL \u00fcr\u00fcn bilgileri \u2014 <a href=\"https:\/\/yocl.com\/tr\/product\/4-1-zero-halogen-single-wall-heat-shrink-tubing\/\">4:1 Halojensiz Tek Duvarl\u0131 Is\u0131yla Daralan Makaron<\/a>. 20.0\/5.0 mm row, supplied\/recovered bounds and absence of adhesive; checked 9 October 2026.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Choose the shrink ratio from the diameter transition the tubing must bridge. Its supplied bore must clear the largest feature, and its freely recovered bore must be smaller than the narrowest surface it needs to grip. A suitable 2:1 size can already complete that job. Consider 3:1 or 4:1 when the actual dimensions require a [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3075,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[165],"tags":[],"class_list":["post-3076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heat-shrink-insulation"],"_links":{"self":[{"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/posts\/3076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/comments?post=3076"}],"version-history":[{"count":1,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/posts\/3076\/revisions"}],"predecessor-version":[{"id":3077,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/posts\/3076\/revisions\/3077"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/media\/3075"}],"wp:attachment":[{"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/media?parent=3076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/categories?post=3076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yocl.com\/tr\/wp-json\/wp\/v2\/tags?post=3076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}