{"id":683,"date":"2026-09-18T03:44:40","date_gmt":"2026-09-18T03:44:40","guid":{"rendered":"https:\/\/htdpulley.top\/timing-pulley-bore-shaft-guide\/"},"modified":"2026-09-18T06:50:02","modified_gmt":"2026-09-18T06:50:02","slug":"timing-pulley-bore-shaft-guide","status":"publish","type":"post","link":"https:\/\/htdpulley.top\/no\/timing-pulley-bore-shaft-guide\/","title":{"rendered":"Timing Pulley Bore, Shaft Fit and Mounting Guide"},"content":{"rendered":"<p class=\"htd-answer\"><strong>Timing Pulley Bore, Shaft Fit and Mounting Guide<\/strong> should be approached as a drive-system decision. The useful starting point is the mating belt and machine interface, followed by tooth count, working width, shaft mounting and duty conditions. This guide explains the checks that help an engineer or buyer turn timing pulley bore shaft into an RFQ that can be verified against a catalogue row or drawing.<\/p>\n<nav aria-label=\"Artikkelinnhold\" class=\"htd-toc\"><strong>I denne veiledningen<\/strong><a href=\"#start\">Start med stasjonen<\/a><a href=\"#geometry\">Geometri og grensesnitt<\/a><a href=\"#application\">S\u00f8knadssjekker<\/a><a href=\"#inspection\">Inspeksjon og vedlikehold<\/a><a href=\"#rfq\">Sjekkliste for tilbud<\/a><\/nav>\n<section id=\"start\">\n<h2>Identifiser drevet f\u00f8r du sammenligner dimensjoner<\/h2>\n<p>For timing pulley bore shaft, identify the complete belt marking before comparing pulley diameters. HTD is a curvilinear synchronous system and the nominal pitch must stay associated with its profile family. Record the driver and driven tooth counts when an existing ratio must be preserved. For a new drive, document the target speed ratio, driver speed and expected load before choosing tooth counts. This prevents a component-level decision from overriding the machine requirement.<\/p>\n<figure class=\"htd-figure\"><img alt=\"Start med parringsbeltet og det n\u00f8dvendige forholdet\" class=\"htd-tech-image\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/htdpulley.top\/wp-content\/uploads\/2026\/09\/tech-bore-1.webp\"\/><\/figure>\n<p>For et erstatningsprosjekt, sammenlign den m\u00e5lte verdien med det installerte beltet og maskinarrangementet f\u00f8r du bestemmer at en katalograd er likeverdig. For et nytt prosjekt, dokumenter designgrunnlaget slik at senere vedlikeholdsteam kan forst\u00e5 hvorfor stigning, tanntall og monteringsstil ble valgt.<\/p>\n<\/section>\n<section id=\"geometry\">\n<h2>Dimensjoner som styrer installasjonen<\/h2>\n<p>En trinse kan matche stigning og tanntall, men likevel ikke passe til maskinen fordi boringen, navet, flensen eller aksialposisjonen er forskjellig. M\u00e5l akselgrensesnittet, remflatebredden, navprojeksjonen p\u00e5 begge sider og remlinjen i forhold til et stabilt maskinnullpunkt. Der det brukes en konisk b\u00f8ssing, registrer b\u00e5de trinseserien og b\u00f8ssingkoden. Der det kreves et ferdig boring, inkluder pasform, kilespor og eventuell festemetode p\u00e5 tegningen.<\/p>\n<figure class=\"htd-figure\"><img alt=\"Registrer remskivegeometrien som styrer monteringen\" class=\"htd-tech-image\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/htdpulley.top\/wp-content\/uploads\/2026\/09\/tech-selection-1.webp\"\/><\/figure>\n<p>For et erstatningsprosjekt, sammenlign den m\u00e5lte verdien med det installerte beltet og maskinarrangementet f\u00f8r du bestemmer at en katalograd er likeverdig. For et nytt prosjekt, dokumenter designgrunnlaget slik at senere vedlikeholdsteam kan forst\u00e5 hvorfor stigning, tanntall og monteringsstil ble valgt.<\/p>\n<\/section>\n<section id=\"application\">\n<h2>Driftsforhold som h\u00f8rer hjemme i utvalget<\/h2>\n<p>The same nominal timing pulley bore shaft component can see very different service depending on the machine. Starts per hour, reversing, shock loading, continuous operating time, temperature, contamination, cleaning and access for tensioning all influence the drive. A compact automation axis emphasizes repeatable motion and controlled alignment, while a conveyor or process machine may emphasize continuous duty and service access. Supply these conditions instead of asking the pulley to be selected from size alone.<\/p>\n<figure class=\"htd-figure\"><img alt=\"Koble utvalget til plikt og milj\u00f8\" class=\"htd-scene\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/htdpulley.top\/wp-content\/uploads\/2026\/09\/main-taper-1.webp\"\/><\/figure>\n<p>For et erstatningsprosjekt, sammenlign den m\u00e5lte verdien med det installerte beltet og maskinarrangementet f\u00f8r du bestemmer at en katalograd er likeverdig. For et nytt prosjekt, dokumenter designgrunnlaget slik at senere vedlikeholdsteam kan forst\u00e5 hvorfor stigning, tanntall og monteringsstil ble valgt.<\/p>\n<\/section>\n<section id=\"inspection\">\n<h2>Inspeksjonspunkter f\u00f8r installasjon<\/h2>\n<p>Inspeksjonen b\u00f8r fokusere p\u00e5 dimensjoner som p\u00e5virker drivenheten: akselgrensesnittet, aksial plassering, tanntilstand, overflatebredde og eventuelle tegningskontrollerte rundl\u00f8p eller nullpunktforhold. En generell kvalitetserkl\u00e6ring definerer ikke aksept. Hvis en dimensjonsrapport, et materialdokument eller en ordrespesifikk registrering er n\u00f8dvendig, m\u00e5 den identifiseres f\u00f8r produksjon. Under vedlikehold m\u00e5 du se etter flensskader, kantslitasje, rusk og tegn p\u00e5 at remskiven har beveget seg p\u00e5 akselen.<\/p>\n<figure class=\"htd-figure\"><img alt=\"Planlegg inspeksjon rundt funksjonell risiko\" class=\"htd-scene\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/htdpulley.top\/wp-content\/uploads\/2026\/09\/inspection-cmm-1.webp\"\/><\/figure>\n<p>For et erstatningsprosjekt, sammenlign den m\u00e5lte verdien med det installerte beltet og maskinarrangementet f\u00f8r du bestemmer at en katalograd er likeverdig. For et nytt prosjekt, dokumenter designgrunnlaget slik at senere vedlikeholdsteam kan forst\u00e5 hvorfor stigning, tanntall og monteringsstil ble valgt.<\/p>\n<\/section>\n<section>\n<h2>\u00c5pne sp\u00f8rsm\u00e5l for \u00e5 lukke f\u00f8r bestilling<\/h2>\n<div class=\"htd-data-grid\">\n<article><strong>Belteidentitet<\/strong><\/p>\n<p>Hvilken n\u00f8yaktig HTD-profil og bredde er installert eller spesifisert?<\/p>\n<\/article>\n<article><strong>Tanntall<\/strong><\/p>\n<p>Hvilket forholdstall eller eksisterende tanntall m\u00e5 bevares?<\/p>\n<\/article>\n<article><strong>Akselgrensesnitt<\/strong><\/p>\n<p>Hvilket arrangement av boring, pasning, kilespor eller konisk foring kreves?<\/p>\n<\/article>\n<article><strong>Aksial konvolutt<\/strong><\/p>\n<p>Hvor mye navutstikk og flensklaring er tilgjengelig?<\/p>\n<\/article>\n<article><strong>Plikt<\/strong><\/p>\n<p>Hva er hastighet, belastning, starter, reversering og driftstimer?<\/p>\n<\/article>\n<article><strong>Dokumenter<\/strong><\/p>\n<p>Hvilke tegninger, materialer eller inspeksjonsprotokoller m\u00e5 f\u00f8lge med leveransen?<\/p>\n<\/article>\n<\/div>\n<\/section>\n<section id=\"rfq\">\n<h2>Hva som skal sendes med tilbudet<\/h2>\n<p>Send profil, tannantall, rembredde, akselgrensesnitt, nav-\/flensdetaljer, antall, destinasjon og en tegning eller en m\u00e5lskisse for erstatning. Legg til hastighet, utvekslingsforhold, last, senteravstand og milj\u00f8 for en ny drivenhet. Se gjennom <a href=\"https:\/\/htdpulley.top\/no\/products\/\">HTD-produktfamilier<\/a>, bruk <a href=\"https:\/\/htdpulley.top\/no\/engineering\/htd-pulley-selection\/\">utvalgsguide<\/a>, eller sammenlign de relevante <a href=\"https:\/\/htdpulley.top\/no\/applications\/\">applikasjonsnotater<\/a>.<\/p>\n<p><a class=\"htd-btn htd-btn-primary\" href=\"#contact\">Forbered din anbudsforesp\u00f8rsel<\/a><\/section>\n<section>\n<h2>The Shaft Interface Is a Controlled Feature<\/h2>\n<p>Record shaft diameter, intended fit, keyway or bush, hub length and the axial belt-line reference. For replacement parts, measure both sides because the hub can be asymmetric.<\/p>\n<p>Hold m\u00e5leverdier, katalogreferanser og prosjektkrav tydelig atskilt. Hvis et obligatorisk punkt ikke er oppgitt i den relevante katalogtabellen eller godkjente tegningen, ta det med som et tilbudssp\u00f8rsm\u00e5l eller tegningskrav i stedet for \u00e5 fylle tomrommet med en plausibel, men ubekreftet verdi.<\/p>\n<\/section>\n<section class=\"htd-soft-panel\">\n<h2>Do Not Convert Maximum Bore Into the Ordered Bore<\/h2>\n<p>Where a taper-bush table shows a maximum bore, treat it as a limit for that bush configuration rather than the shaft size to order. The actual shaft and bush code still need to be specified.<\/p>\n<p>Innkj\u00f8psregistreringen b\u00f8r ha en tydelig kobling mellom maskinkravet og den valgte trinsen. Det betyr at fullstendig rem- eller profilidentitet, tannantall, arbeidsbredde og akselgrensesnittinformasjon forblir sammen med produktkoden. Eventuelle spesielle materialer, overflater, kontrollerte toleranser, merkinger eller rapportkrav b\u00f8r oppgis separat, slik at de ikke kan forveksles med en universell egenskap for hele familien.<\/p>\n<\/section>\n<section class=\"htd-related-note\">\n<h2>Cross-Family Shaft-Interface Reference<\/h2>\n<p>Another pulley family may use the same general shaft-interface questions without sharing the same belt geometry. The <a href=\"https:\/\/spapulley.com\/engineering\/\" rel=\"noopener\">SPA pulley engineering guides<\/a> are useful as an adjacent reference for taper-bush and shaft-data preparation; do not use SPA groove data as HTD compatibility data.<\/p>\n<\/section>\n<section>\n<h2>Innkj\u00f8p og dokumentasjon<\/h2>\n<p>N\u00e5r utvalget er klart, behold den aksepterte produktidentiteten, mengden, destinasjonen og tegningsrevisjonen p\u00e5 samme innkj\u00f8pslinje. Standard katalogdeler planlegges vanligvis rundt minimumsmengder for produksjon, mens st\u00f8rre eller mer verdifulle varer kan gjennomg\u00e5s mot den praktiske ordreverdien. Kvalifiserte varepr\u00f8ver fra nye kunder p\u00e5 1\u20135 deler kan gjennomg\u00e5s til pr\u00f8vepriser n\u00e5r konfigurasjonen og produksjonsruten er passende.<\/p>\n<p>Bestillinger med blandede modeller kan konsolideres mot en praktisk ordreverdi p\u00e5 omtrent 1500 USD. Spesialmaterialer og spesialprosesser f\u00f8lger minimumsmengden som kreves av den prosessen. Sv\u00e6rt sm\u00e5 foresp\u00f8rsler om ett eller to deler h\u00e5ndteres kun som kvalifisert teknisk validering eller betalte varepr\u00f8ver i stedet for erstatningsbestillinger fra detaljhandelen.<\/p>\n<p>Ledetiden bekreftes etter at den tekniske definisjonen er klar. Standarddeler planlegges vanligvis til 10\u201325 virkedager, tilpassede komponenter til 20\u201345 virkedager, og prosjektbaserte sammenstillinger eller relatert utstyr til 45\u2013120 virkedager der det er aktuelt. EXW, FOB, CIF og DAP st\u00f8ttes vanligvis; FCA, CFR, CPT, CIP og DDP kan diskuteres for passende forsendelser. Behandle disse som planleggingsintervaller, ikke et forsendelsesl\u00f8fte f\u00f8r ordregjennomgang.<\/p>\n<\/section>\n<section class=\"htd-soft-panel\">\n<h2>En praktisk beslutningssekvens<\/h2>\n<p>Start with shaft diameter, fit requirement, key\/bush method and hub length. Keep the machine requirement separate from the catalogue choice: first identify what the drive must preserve, then compare only the rows or drawings that match that identity. This keeps a familiar-looking pulley from being accepted before its functional interfaces have been checked.<\/p>\n<p>For an existing machine, preserve the original relationship before making changes. For a new design, record the target ratio, operating context and installation envelope so the shaft-interface definition can be reviewed later without relying on memory or a photograph alone.<\/p>\n<\/section>\n<section class=\"htd-split\">\n<div>\n<h2>Lag en m\u00e5lelogg<\/h2>\n<p>The most useful measurement set contains shaft measurement, key or bush details, hub projection, axial datum and drawing. Mark which values were measured on the machine and which values came from a catalogue or released drawing. When a feature is inaccessible, photograph its relationship to a stable datum and identify it as confirmation-required rather than filling the gap with an assumed value.<\/p>\n<p>M\u00e5ltegninger b\u00f8r vises i full lesbar bredde. Skaler aldri et skjermbilde og bruk deretter den skalerte dimensjonen som et m\u00e5l. Bruk den trykte verdien og riktig konstruksjonstype.<\/p>\n<\/div>\n<div><img src=\"http:\/\/htdpulley.top\/wp-content\/uploads\/2026\/09\/tech-dimension-1.webp\" alt=\"HTD pulley dimension reference for bore and shaft-interface definition\" class=\"htd-tech-image\" loading=\"lazy\" decoding=\"async\"><\/div>\n<\/section>\n<section>\n<h2>\u00c9n feilmodus verdt \u00e5 unng\u00e5<\/h2>\n<p>A common error is quoting a bore diameter without identifying the complete shaft connection. That can produce a part that appears close in the catalogue yet changes ratio, belt line, mounting or service access. Resolve the conflicting feature before requesting price so the quotation refers to one mechanically coherent configuration.<\/p>\n<p>Hvis to mulige konfigurasjoner fortsatt er mulige, send b\u00e5de maskinm\u00e5l og fotografier og det foretrukne alternativet. Tilbudet kan da identifisere hvilket grensesnitt som fortsatt trenger bekreftelse i stedet for \u00e5 stille konvertere usikkerhet til en spesifikasjon.<\/p>\n<\/section>\n<section class=\"htd-soft-panel\">\n<h2>Gj\u00f8r det tekniske valget om til en tilbudsklar linjepost<\/h2>\n<div class=\"htd-data-grid\">\n<article><strong>Identitet<\/strong><\/p>\n<p>Oppgi HTD-\/profilfamilien og fullf\u00f8r belteinformasjonen.<\/p>\n<\/article>\n<article><strong>Geometri<\/strong><\/p>\n<p>Oppgi tannantall, arbeidsbredde og relevante dimensjoner eller tegningsreferanser.<\/p>\n<\/article>\n<article><strong>Montering<\/strong><\/p>\n<p>Definer boring eller b\u00f8ssing, akseldata, navprojeksjon og beltelinjeposisjon der det er aktuelt.<\/p>\n<\/article>\n<article><strong>Kommersiell linje<\/strong><\/p>\n<p>Legg til antall, destinasjon, n\u00f8dvendige dokumenter og tegningsrevisjonen som ble brukt for foresp\u00f8rselen.<\/p>\n<\/article>\n<\/div>\n<p>N\u00e5r ett av elementene ovenfor er genuint ukjent, merk det for bekreftelse. Et presist \u00e5pent sp\u00f8rsm\u00e5l er mer nyttig enn en plausibel verdi som aldri ble m\u00e5lt.<\/p>\n<\/section>\n<section>\n<h2>Sp\u00f8rsm\u00e5l kj\u00f8pere ofte stiller<\/h2>\n<div class=\"htd-faq\">\n<details>\n<summary>Hva b\u00f8r bekreftes f\u00f8rst?<\/summary>\n<p>Confirm shaft diameter, fit requirement, key\/bush method and hub length. That prevents later dimensions from being compared across the wrong product family or installation route.<\/p>\n<\/details>\n<details>\n<summary>Hvilken informasjon er mest nyttig for en erstatning?<\/summary>\n<p>Send shaft measurement, key or bush details, hub projection, axial datum and drawing, plus clear photographs before the old pulley is removed. The photographs preserve axial orientation and neighboring clearances that a loose part cannot show.<\/p>\n<\/details>\n<details>\n<summary>N\u00e5r b\u00f8r en tegning brukes?<\/summary>\n<p>Bruk en kontrollert tegning n\u00e5r katalograden ikke fullstendig definerer akselgrensesnittet, nav-\/flensarrangementet, overflaten, toleransen eller inspeksjonskravet som er viktig for maskinen.<\/p>\n<\/details>\n<\/div>\n<\/section>\n<section>\n<h2>Do Not Separate the Interface Decision From the Exact Model<\/h2>\n<p>Material, bore and taper-bush availability can change with pulley size and construction. Use the material and mounting information stated for the selected row rather than assuming every member of the pitch family can be supplied identically. If the machine needs a feature outside the supported row, move to a drawing-controlled custom review.<\/p>\n<p>A taper-bush maximum bore is a capacity limit for that bush, not the ordered shaft diameter. State the actual shaft size. For straight-bore work, state the required finished interface and any keyway or locking feature explicitly. Hub projection and the belt centerline should remain visible on the drawing because they can decide whether the part installs correctly.<\/p>\n<\/section>\n<section class=\"htd-soft-panel\">\n<h2>Material Requests Need a Functional Reason<\/h2>\n<p>Where several materials appear in the catalogue family, choose from the configurations actually supported. If a special material, coating or treatment is required by the environment or customer standard, state it as a controlled order requirement and discuss the process MOQ. Do not infer material solely from the color of a product photograph.<\/p>\n<p>For inspection, identify what the material choice or interface is expected to control. This makes a material document, dimensional record or other report meaningful to the actual order.<\/p>\n<\/section>\n<section class=\"htd-applied-guide\">\n<h2>The Shaft Interface Should Be Defined After the Pulley Family Is Fixed<\/h2>\n<p>The shaft connection cannot be selected reliably before the belt-side identity is known. Fix the HTD family, tooth count and working width first, then review the bore or taper-bush route, hub length, keyway where applicable and axial location. This sequence prevents a convenient bore choice from steering the project into the wrong pulley family.<\/p>\n<p>For replacements, measure the actual shaft and document shoulders, spacers, retaining features and available withdrawal space. A nominal shaft size does not by itself define the finished fit, keyway or tolerance. When those details are not published in the catalogue row, they belong on the project drawing rather than in a generic product description.<\/p>\n<p>For taper-bush arrangements, keep the exact bush designation tied to the supported pulley row and shaft. For straight-bore custom machining, state the finished interface and inspection requirement explicitly so the purchasing record is reproducible.<\/p>\n<\/section>\n<section class=\"htd-topic-detail\">\n<h2>Do Not Turn a Shaft Measurement Into an Assumed Fit<\/h2>\n<p>A measured shaft diameter identifies the physical shaft but does not automatically define the intended fit, tolerance or keyway. Those controls come from the machine drawing, design intent or an approved replacement specification. Record the measured value as a field measurement and keep it separate from the dimension that will be released for manufacture.<\/p>\n<p>Also record axial locating features: shoulders, spacers, nuts, collars or retaining rings. The bore can be correct while the pulley still sits in the wrong belt plane if the hub or locating stack differs from the original arrangement.<\/p>\n<\/section>\n<section class=\"htd-applied-guide\">\n<h2>Define the Shaft Interface Only After the Belt-Side Geometry Is Fixed<\/h2>\n<p>The shaft connection controls how the pulley locates, transmits torque and maintains its axial position. Before deciding bore, keyway or taper-bush details, confirm the HTD family, tooth count and working width. This prevents a custom shaft feature from being added to the wrong pulley family.<\/p>\n<p>A shaft diameter by itself is not a complete interface definition. Replacement work may also depend on fit, keyway, shoulder position, retaining method, hub projection and available installation space. If any of those features are machine-critical, place them on the controlled drawing rather than relying on a verbal note.<\/p>\n<div class=\"htd-data-grid\">\n<article><strong>Shaft data<\/strong><\/p>\n<p>Record actual shaft diameter and any controlled fit requirement.<\/p>\n<\/article>\n<article><strong>Keyway \/ bush<\/strong><\/p>\n<p>Identify keyway dimensions or the documented taper-bush designation as applicable.<\/p>\n<\/article>\n<article><strong>Axial position<\/strong><\/p>\n<p>Measure hub projection, shoulder location and belt centerline.<\/p>\n<\/article>\n<article><strong>Inspection<\/strong><\/p>\n<p>Define the datum and acceptance value for any controlled shaft-interface dimension.<\/p>\n<\/article>\n<\/div>\n<p>For obsolete machines, previous repair work may have changed the shaft from the original design. Measure the current interface before ordering a replacement and keep that information with the service record.<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>  Timing Pulley Bore, Shaft Fit and Mounting Guide  should be approached as a drive-system decision. The useful starting point is the mating belt and machine interface, followed by tooth count, working width, shaft mounting and duty conditions. This guide expl<\/p>","protected":false},"author":1,"featured_media":729,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1646],"tags":[],"class_list":["post-683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guides"],"_links":{"self":[{"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/posts\/683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/comments?post=683"}],"version-history":[{"count":1,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/posts\/683\/revisions"}],"predecessor-version":[{"id":870,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/posts\/683\/revisions\/870"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/media\/729"}],"wp:attachment":[{"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/media?parent=683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/categories?post=683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/htdpulley.top\/no\/wp-json\/wp\/v2\/tags?post=683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}