{"id":101584,"date":"2026-05-30T21:41:00","date_gmt":"2026-05-30T21:41:00","guid":{"rendered":"https:\/\/vibromera.eu\/?page_id=101584"},"modified":"2026-07-02T18:43:19","modified_gmt":"2026-07-02T18:43:19","slug":"augers","status":"publish","type":"page","link":"https:\/\/vibromera.eu\/lo\/balancing-catalog\/augers\/","title":{"rendered":"Auger &#038; Screw Conveyor Balancing"},"content":{"rendered":"<div class=\"vbm-cat\">\n<style>\n.vbm-cat .vbm-answer{background:#eaf1ec;border-left:4px solid #2f6e46;border-radius:4px;padding:16px 20px;margin:0 0 24px;font-size:16px;line-height:1.65;color:#16202b}\n.vbm-cat .vbm-toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 32px;padding:0}\n.vbm-cat .vbm-toc a{background:#f1f5f9;border:1px solid #cbd5e1;border-radius:999px;padding:5.6px 13.6px;font-size:13.6px;color:#1f3a5f;text-decoration:none;white-space:nowrap;transition:background .18s,color .18s}\n.vbm-cat .vbm-toc a:hover{background:#1f3a5f;color:#fff}\n.vbm-cat .vbm-kit{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;margin:24px 0}\n@media(max-width:700px){.vbm-cat .vbm-kit{grid-template-columns:1fr}}\n.vbm-cat .vbm-kit .media{margin:0}\n.vbm-cat .vbm-kit .media img{width:100%;border-radius:6px;display:block}\n.vbm-cat .vbm-kit .price{font-size:21.6px;font-weight:700;color:#b9542d;margin:8px 0 16px}\n.vbm-cat .vbm-kit .price span{font-size:13.6px;font-weight:400;color:#555}\n.vbm-cat ul.vbm-kit-list{list-style:none;margin:8px 0 20px;padding:0}\n.vbm-cat ul.vbm-kit-list li{padding:4.8px 0 4.8px 25.6px;position:relative;font-size:15.2px}\n.vbm-cat ul.vbm-kit-list li::before{content:\"\u2713\";position:absolute;left:0;color:#2f6e46;font-weight:700}\n.vbm-cat .vbm-variants{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}\n@media(max-width:600px){.vbm-cat .vbm-variants{grid-template-columns:1fr}}\n.vbm-cat .vbm-variant{border:2px solid #cbd5e1;border-radius:8px;padding:17.6px 20px}\n.vbm-cat .vbm-variant.is-primary{border-color:#b9542d;background:#faf4ef}\n.vbm-cat .vbm-variant .tag{display:inline-block;font-size:11.52px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;background:#b9542d;color:#fff;border-radius:3px;padding:.15em .55em;margin-bottom:8px}\n.vbm-cat .vbm-variant:not(.is-primary) .tag{background:#1f3a5f}\n.vbm-cat .vbm-variant h3{margin:4.8px 0 8px;font-size:16.8px}\n.vbm-cat .vbm-variant p{margin:0;font-size:14.4px;color:#444}\n.vbm-cat table.vbm-table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.4px}\n.vbm-cat table.vbm-table caption{text-align:left;font-weight:700;margin-bottom:6.4px;color:#1f3a5f}\n.vbm-cat table.vbm-table th{background:#1f3a5f;color:#fff;padding:8.8px 12px;text-align:left}\n.vbm-cat table.vbm-table td{padding:8px 12px;border-bottom:1px solid #e2e8f0;vertical-align:top}\n.vbm-cat table.vbm-table tr:nth-child(even) td{background:#f8fafc}\n.vbm-cat table.vbm-table td.yes{color:#2f6e46;font-weight:700}\n.vbm-cat table.vbm-table td.no{color:#a32a22;font-weight:700}\n.vbm-cat .vbm-trust{display:flex;flex-wrap:wrap;gap:9.6px;margin-top:20px}\n.vbm-cat .vbm-trust span{background:#f1f5f9;border:1px solid #cbd5e1;border-radius:4px;padding:4.8px 12px;font-size:13.44px;color:#333}\n<\/style>\n<p class=\"vbm-cat-bc\"><a href=\"https:\/\/vibromera.eu\/lo\/balancing-catalog\/\">Balancing services<\/a> &rsaquo; Augers &amp; Screw Conveyors<\/p>\n<div class=\"vbm-hero2\">\n<div>\n<h1>Auger &amp; Screw Conveyor Balancing &mdash; In-Situ, at Operating Speed<\/h1>\n<p class=\"lede\">Grain blowers, feed augers and industrial screw conveyors are long, slender rotors that develop two-plane unbalance the moment a flight wears unevenly or a weld shifts the mass distribution. We balance them <strong>on site, at operating speed<\/strong> &mdash; no workshop removal, no guesswork &mdash; restoring smooth, reliable material flow and stopping premature bearing failures in their tracks.<\/p>\n<div class=\"vbm-cta-row\" style=\"justify-content:flex-start\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/lo\/balanset-1a\/\">Get the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/lo\/community\/\">Ask our engineer<\/a>\n<\/div>\n<\/div>\n<figure class=\"media\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2017\/12\/IMG_3201-1024x765.webp\" alt=\"Auger and screw conveyor being balanced on site at operating speed\" loading=\"lazy\"><\/figure>\n<\/div>\n<p class=\"vbm-answer\"><b>In short:<\/b> Auger and screw conveyor balancing is performed in-situ, at normal operating speed, using the two-plane influence-coefficient method. Vibration accelerometers are mounted on both end-bearing housings and a laser tachometer measures shaft speed; the Balanset-1A calculates the exact correction mass and angle for each plane. No rotor removal, no trough disassembly &mdash; a typical job is complete in under one hour, reducing vibration by 70&nbsp;% or more and extending bearing life by a factor of eight or more.<\/p>\n<nav class=\"vbm-toc\">\n<a href=\"#signs\">Symptoms<\/a><br \/>\n<a href=\"#why\">Causes &amp; costs<\/a><br \/>\n<a href=\"#how\">Step by step<\/a><br \/>\n<a href=\"#what\">What we balance<\/a><br \/>\n<a href=\"#standards\">Standards<\/a><br \/>\n<a href=\"#device\">The Balanset-1A<\/a><br \/>\n<a href=\"#compare\">Field vs machine<\/a><br \/>\n<a href=\"#cases\">Real cases<\/a><br \/>\n<a href=\"#calc\">Calculators<\/a><br \/>\n<a href=\"#faq\">FAQ<\/a><br \/>\n<\/nav>\n<div class=\"vbm-sec\" id=\"signs\">\n<h2>Signs your auger or screw conveyor is out of balance<\/h2>\n<p>Screw conveyors run at relatively modest speeds, yet even small mass eccentricities travel the full length of the shaft and create surprising levels of vibration. Watch for these warning signs:<\/p>\n<div class=\"vbm-signs\">\n<div><b>Once-per-revolution shake<\/b> A steady vibration locked to shaft speed is the textbook signature of mass unbalance &mdash; the dominant 1&times; RPM component in the vibration spectrum.<\/div>\n<div><b>Bearing failure at both ends<\/b> Long screws distribute unbalance forces to both end bearings, wearing out housings at both ends far ahead of their rated L<sub>10<\/sub> life.<\/div>\n<div><b>Structural rattling<\/b> The trough, frame or support legs vibrate noisily even at low throughput, signalling that the rotor is exciting the surrounding structure.<\/div>\n<div><b>Product pulsing or surging<\/b> Vibration-induced trough movement disrupts consistent material flow and causes uneven, unreliable discharge rates.<\/div>\n<div><b>Seal wear &amp; leakage<\/b> End-seal faces grind unevenly when bearing housings oscillate laterally, causing dust or product to escape at the shaft entry points.<\/div>\n<div><b>Cracked or loose flights<\/b> Fatigue from cyclic bending loads shows up as cracked flight welds, loose fasteners or backing-out bolts on removable spiral sections.<\/div>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"why\">\n<h2>Why augers lose balance &mdash; and what it costs<\/h2>\n<p>A screw conveyor rotor is fundamentally different from a compact fan or pump impeller: its mass is spread over a long, relatively flexible shaft, making it inherently susceptible to <b>two-plane unbalance<\/b> that a single correction weight cannot fix. Unbalance builds gradually through <b>uneven abrasive wear<\/b> of the flights, <b>product build-up<\/b> on one side of the spiral, corrosion pitting, and repair welds or replacement flight sections that alter the mass distribution along the shaft. In grain blowers and pneumatic transfer augers the spiral also spins fast enough for centrifugal force to magnify even a modest eccentricity into hundreds of newtons of shaking force.<\/p>\n<p>Operators often mistake the worsening vibration for a structural problem and respond by adding mounting bolts or stiffer frames &mdash; masking the symptom while the root cause continues to grind down bearings, damage seals and fatigue welds. Because centrifugal force grows with the <em>square<\/em> of rotational speed, a small mass offset that causes modest vibration at 300&nbsp;rpm becomes four times worse at 600&nbsp;rpm. Correcting both planes of unbalance in a single on-site visit eliminates the load at source, and the machinery runs smoothly for years rather than months.<\/p>\n<\/div>\n<div class=\"vbm-band\">\n<div class=\"vbm-stats\">\n<div class=\"vbm-stat\"><b>&times;10<\/b><span>bearing life when vibration is halved<\/span><\/div>\n<div class=\"vbm-stat\"><b>&minus;70%<\/b><span>typical vibration drop after one session<\/span><\/div>\n<div class=\"vbm-stat\"><b>2<\/b><span>planes corrected in one visit<\/span><\/div>\n<div class=\"vbm-stat\"><b>&lt;1h<\/b><span>typical on-site job<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\">\n<h2>Why halving vibration multiplies bearing life<\/h2>\n<div class=\"vbm-callout\"><b>ISO 281<\/b> defines rolling-bearing rating life as <b>L<sub>10<\/sub> = (C\/P)<sup>p<\/sup><\/b>, where P is the dynamic load on the bearing and the exponent p = 3 for ball bearings and 10\/3 for roller bearings. Residual unbalance <em>is<\/em> that rotating load P, and vibration amplitude tracks it directly &mdash; so cutting vibration in half halves P and multiplies bearing life by 2<sup>p<\/sup>: about <b>8&times; for ball bearings and ~10&times; for roller bearings<\/b> (2<sup>10\/3<\/sup>&nbsp;&asymp;&nbsp;10). Run your own numbers in our <a href=\"https:\/\/vibromera.eu\/lo\/calculators\/bearing-load\/\">bearing-life calculator<\/a>.<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"how\">\n<h2>How we balance an auger &mdash; step by step<\/h2>\n<p>The Balanset-1A uses the influence-coefficient method, adapted here for the two-plane reality of long screw rotors. The same systematic procedure can be carried out by your own maintenance team:<\/p>\n<ol class=\"vbm-steps\">\n<li><b>Mount the sensors.<\/b> Vibration accelerometers are fixed to both end-bearing housings and a laser tachometer is aimed at a reflective strip on the shaft. No disassembly is required &mdash; the screw runs at normal operating speed throughout.<\/li>\n<li><b>Measure the baseline.<\/b> One full-speed run captures vibration amplitude and phase angle at each bearing plane simultaneously, establishing the current two-plane unbalance state.<\/li>\n<li><b>Add a trial weight.<\/b> A known test mass is clamped to the shaft or a flight at a precisely measured angular position near one end. The rotor runs again so the device records how both planes respond to the known perturbation &mdash; the influence coefficient.<\/li>\n<li><b>Let the device calculate.<\/b> The Balanset-1A solves the two-plane influence-coefficient matrix and outputs the exact correction mass and clock angle for each correction plane. A second trial weight at the opposite end refines the solution if needed.<\/li>\n<li><b>Fit the correction weights.<\/b> Correction masses are welded, bolted or clamped at the calculated positions on both ends of the screw rotor, using the calculated angular placement.<\/li>\n<li><b>Verify and document.<\/b> A final measurement run confirms residual unbalance meets the ISO 21940-11 grade required for the application. The Balanset-1A generates a printed report showing before-and-after figures at each plane.<\/li>\n<\/ol>\n<\/div>\n<div class=\"vbm-sec\" id=\"what\">\n<h2>What we balance<\/h2>\n<ul class=\"vbm-list\">\n<li>Grain-elevator and grain-blower augers<\/li>\n<li>Feed-mill and feed-conveyor screws<\/li>\n<li>Horizontal screw conveyors in bulk-material handling<\/li>\n<li>Inclined and vertical screw lifts<\/li>\n<li>Cement and aggregate screw feeders<\/li>\n<li>Extruder feed screws (removable rotor)<\/li>\n<li>Agricultural combine harvester unloading augers<\/li>\n<li>Dust-collection and ash-conveyor screws<\/li>\n<li>Pneumatic transfer augers and grain blowers<\/li>\n<li>Custom spiral conveyor rotors of any length<\/li>\n<\/ul>\n<\/div>\n<div class=\"vbm-sec\" id=\"standards\">\n<h2>Tolerances &amp; standards<\/h2>\n<div class=\"vbm-callout\">\n<p><b>ISO 21940-11<\/b> (formerly ISO 1940-1) governs rigid-rotor balance quality grades. Long-shaft screw rotors typically fall into quality grade <b>G 6.3<\/b> (general industrial machinery) or <b>G 2.5<\/b> where smoother operation is required &mdash; for example, high-speed grain blowers or conveyors feeding precision metering equipment. The standard defines the permissible residual specific unbalance e<sub>per<\/sub> as a function of rotor service speed, giving a clear, measurable acceptance criterion.<\/p>\n<p>For high-speed grain blowers that move material pneumatically, the fan-balancing limits of <b>ISO 14694<\/b> or the machine-builder&rsquo;s own specification may also apply. We balance to the grade your application requires and supply a documented residual-unbalance result &mdash; in g&middot;mm per plane &mdash; alongside the grade achieved. Use our <a href=\"https:\/\/vibromera.eu\/lo\/calculators\/residual-unbalance-iso1940\/\">residual-unbalance calculator<\/a> to find the permissible tolerance for your rotor before starting.<\/p>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"device\">\n<h2>The Balanset-1A &mdash; your complete field-balancing kit<\/h2>\n<p>Everything on this page is done with one portable instrument: the <a href=\"https:\/\/vibromera.eu\/lo\/balanset-1a\/\">Balanset-1A<\/a>. It is a two-channel dynamic balancer and vibration analyzer that balances screw conveyor and auger rotors <strong>in their own bearings, at operating speed<\/strong>, using the 3-run influence-coefficient method &mdash; the software calculates the exact correction mass and angle for each plane and saves a report.<\/p>\n<div class=\"vbm-kit\">\n<figure class=\"media\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/%D0%91%D0%B0%D0%BB%D0%BA%D0%BE%D0%BC%D0%9A%D0%B8%D1%82-scaled-1024x683.jpg\" alt=\"Complete Balanset-1A balancing kit with sensors, laser tachometer, scale and case\" loading=\"lazy\"><\/figure>\n<div>\n<h3>What&rsquo;s in the Full Kit<\/h3>\n<p class=\"price\">&euro;1,975 <span>&middot; Full Kit, in stock, VAT invoice<\/span><\/p>\n<ul class=\"vbm-kit-list\">\n<li>Interface measurement unit (USB, 2 channels)<\/li>\n<li>Two vibration accelerometers (4&nbsp;m cable, 10&nbsp;m optional)<\/li>\n<li>Laser tachometer \/ optical phase sensor (50&ndash;500&nbsp;mm)<\/li>\n<li>Magnetic stand for the sensor<\/li>\n<li>Digital scale for trial &amp; correction weights<\/li>\n<li>Windows balancing &amp; analysis software<\/li>\n<li>Plastic transport case<\/li>\n<\/ul>\n<div class=\"vbm-cta-row\" style=\"justify-content:flex-start\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/lo\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/lo\/community\/\">Ask our engineer<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"vbm-variants\">\n<div class=\"vbm-variant is-primary\"><span class=\"tag\">Recommended<\/span><\/p>\n<h3>Full Kit<\/h3>\n<p>Unit &middot; 2 sensors &middot; laser tachometer &middot; magnetic stand &middot; digital scale &middot; software &middot; transport case. Everything needed to start balancing out of the box.<\/p>\n<\/div>\n<div class=\"vbm-variant\"><span class=\"tag\">OEM<\/span><\/p>\n<h3>OEM set<\/h3>\n<p>Unit &middot; 2 sensors &middot; laser tachometer &middot; software. For integrators who already have a stand, scale and case, or who embed the unit into a balancing machine.<\/p>\n<\/div>\n<\/div>\n<table class=\"vbm-table\">\n<caption>Key technical specifications<\/caption>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Measurement channels<\/td>\n<td>2 (single- &amp; two-plane balancing)<\/td>\n<\/tr>\n<tr>\n<td>Vibration velocity range<\/td>\n<td>0.2&ndash;80 mm\/s RMS<\/td>\n<\/tr>\n<tr>\n<td>Frequency range<\/td>\n<td>5&ndash;1000 Hz (&le;10% amplitude error above 550&nbsp;Hz)<\/td>\n<\/tr>\n<tr>\n<td>Measurement accuracy<\/td>\n<td>&plusmn;5% of full scale<\/td>\n<\/tr>\n<tr>\n<td>Method<\/td>\n<td>3-run influence-coefficient (1 or 2 planes)<\/td>\n<\/tr>\n<tr>\n<td>Analysis<\/td>\n<td>Amplitude &amp; phase at 1&times;, FFT spectrum &amp; waveform, saved reports<\/td>\n<\/tr>\n<tr>\n<td>Laptop<\/td>\n<td>Not included (Windows PC, available on request)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"vbm-trust\"><span><b>&#10003;<\/b> In stock<\/span><span><b>&#10003;<\/b> DHL Portugal &euro;35<\/span><span><b>&#10003;<\/b> DHL worldwide &euro;110<\/span><span><b>&#10003;<\/b> 2-year warranty<\/span><span><b>&#10003;<\/b> VAT invoice<\/span><span><b>&#10003;<\/b> Engineer support<\/span><\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"compare\">\n<h2>Field balancing vs balancing machine &mdash; which is right for your screw rotor?<\/h2>\n<table class=\"vbm-table\">\n<caption>Comparison: in-situ field balancing vs dedicated balancing machine for augers and screw conveyors<\/caption>\n<thead>\n<tr>\n<th>Factor<\/th>\n<th>Field balancing (Balanset-1A)<\/th>\n<th>Balancing machine (workshop)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Rotor removed from conveyor?<\/td>\n<td class=\"yes\">No &mdash; runs in place<\/td>\n<td class=\"no\">Yes &mdash; full disassembly required<\/td>\n<\/tr>\n<tr>\n<td>Trough or casing disconnection?<\/td>\n<td class=\"yes\">No<\/td>\n<td class=\"no\">Yes<\/td>\n<\/tr>\n<tr>\n<td>Production downtime<\/td>\n<td>Sensor fitting only (&lt;15 min)<\/td>\n<td>Hours to days (pull, transport, balance, reinstall)<\/td>\n<\/tr>\n<tr>\n<td>Balancing speed<\/td>\n<td>Actual operating speed &amp; load conditions<\/td>\n<td>Separate low-speed spindle<\/td>\n<\/tr>\n<tr>\n<td>Accounts for shaft sag &amp; flex<\/td>\n<td class=\"yes\">Yes &mdash; full assembly balanced in situ<\/td>\n<td class=\"no\">Rotor in isolation, no real mounting<\/td>\n<\/tr>\n<tr>\n<td>Two-plane correction<\/td>\n<td class=\"yes\">Yes &mdash; both end bearings in one visit<\/td>\n<td class=\"yes\">Yes<\/td>\n<\/tr>\n<tr>\n<td>Standards met<\/td>\n<td>ISO 21940-11 (G 6.3 \/ G 2.5)<\/td>\n<td>ISO 21940-11<\/td>\n<\/tr>\n<tr>\n<td>Equipment cost<\/td>\n<td>&euro;1,975 (Full Kit)<\/td>\n<td>&euro;10,000 &ndash; &euro;50,000+<\/td>\n<\/tr>\n<tr>\n<td>Typical job time<\/td>\n<td>&lt;1 hour on site<\/td>\n<td>1&ndash;3 days total<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Field balancing is the preferred choice whenever the screw rotor can run and the rigidity criterion is satisfied. A workshop machine remains appropriate for new-build rotors with zero run time, or for very large or damaged rotors that require complete disassembly for other repairs.<\/p>\n<\/div>\n<div class=\"vbm-sec\" id=\"cases\">\n<h2>Real auger-balancing cases<\/h2>\n<div class=\"vbm-cases\">\n<a class=\"vbm-case\" href=\"https:\/\/vibromera.eu\/lo\/example\/screw-balancing\/\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2017\/12\/IMG_3201-1024x765.webp\" alt=\"Two-plane field balancing of an industrial screw conveyor rotor on site\" loading=\"lazy\"><\/p>\n<div class=\"body\">\n<h3>Industrial screw conveyor<\/h3>\n<p>Two-plane field balancing of a bulk-material screw conveyor rotor, achieving ISO 21940-11 G&nbsp;6.3 and eliminating recurring bearing failures.<\/p>\n<\/div>\n<p><\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"calc\">\n<h2>Free auger &amp; screw conveyor calculators<\/h2>\n<div class=\"vbm-chips\">\n<a href=\"https:\/\/vibromera.eu\/lo\/calculators\/centrifugal-force-unbalance\/\">Centrifugal force from unbalance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/calculators\/residual-unbalance-iso1940\/\">Residual unbalance (ISO 1940)<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/calculators\/trial-weight-calculator\/\">Trial weight calculator<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/calculators\/bearing-load\/\">Bearing-life calculator<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/calculators\/tip-speed-mulcher\/\">Tip speed calculator<\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec vbm-faq\" id=\"faq\">\n<h2>Auger &amp; screw conveyor balancing FAQ<\/h2>\n<details>\n<summary>Does a screw conveyor really need two-plane balancing?<\/summary>\n<div class=\"ans\">Almost always, yes. The mass of a screw rotor is spread along its length, so unbalance at one end does not cancel unbalance at the other. Correcting a single plane can actually worsen vibration at the opposite bearing. The Balanset-1A handles both planes simultaneously in a single visit, with accelerometers at each end-bearing housing.<\/div>\n<\/details>\n<details>\n<summary>Can the auger stay in the trough during balancing?<\/summary>\n<div class=\"ans\">In most cases yes. Field balancing is performed with the rotor in its own bearings, running at normal operating speed, without removing the screw from the trough or conveyor casing. You need safe access to both end-bearing housings to fit the vibration sensors, and to the shaft or flights to add and position the correction weights during the job.<\/div>\n<\/details>\n<details>\n<summary>What balance grade applies to screw conveyors?<\/summary>\n<div class=\"ans\">ISO 21940-11 grade G&nbsp;6.3 is the standard for general industrial machinery including most horizontal screw conveyors. High-speed grain blowers and conveyors feeding precision metering equipment are typically balanced to G&nbsp;2.5. The standard defines permissible residual specific unbalance e<sub>per<\/sub> in g&middot;mm\/kg as a function of service speed &mdash; use our residual-unbalance calculator to determine the exact tolerance for your rotor before starting.<\/div>\n<\/details>\n<details>\n<summary>Our auger is still rough after replacing worn flights &mdash; why?<\/summary>\n<div class=\"ans\">Replacement flight sections rarely have identical mass to the originals, and the attachment welds add further asymmetry. The repair itself almost always introduces new two-plane unbalance. Balancing after any significant flight repair or screw section replacement is standard practice, not an optional extra.<\/div>\n<\/details>\n<details>\n<summary>How much correction weight is typically needed?<\/summary>\n<div class=\"ans\">It varies with rotor mass and severity of unbalance, but it is usually a very small fraction of the rotor weight &mdash; commonly a few hundred grams on a large agricultural auger. The <a href=\"https:\/\/vibromera.eu\/lo\/calculators\/trial-weight-calculator\/\">trial-weight calculator<\/a> helps you size an appropriate test mass before you start, minimising the risk of over-disturbing the rotor.<\/div>\n<\/details>\n<details>\n<summary>Can we do this ourselves with the Balanset-1A?<\/summary>\n<div class=\"ans\">Yes. The Balanset-1A is designed for maintenance teams to operate without specialist balancing experience. It walks you through each measurement run with on-screen prompts, solves the two-plane influence-coefficient matrix automatically, and outputs a correction result and final report. Our <a href=\"https:\/\/vibromera.eu\/lo\/community\/\">community forum<\/a> has engineers available if you encounter an unusual rotor or want to verify your approach.<\/div>\n<\/details>\n<\/div>\n<div class=\"vbm-sec\">\n<h2>Learn the theory<\/h2>\n<div class=\"vbm-chips blue\">\n<a href=\"https:\/\/vibromera.eu\/lo\/glossary\/two-plane-balancing\/\">Two-plane balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/glossary\/field-balancing\/\">Field balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/glossary\/dynamic-balancing\/\">Dynamic balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/glossary\/residual-unbalance\/\">Residual unbalance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/lo\/glossary\/balance-quality\/\">Balance quality grades<\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-band\">\n<h2>Balance your auger or screw conveyor &mdash; in place, today<\/h2>\n<p>The Balanset-1A handles the full two-plane correction that long screw rotors demand, completing the job at running speed with a documented result showing exact residual unbalance at each correction plane &mdash; to ISO 21940-11 G&nbsp;6.3 or G&nbsp;2.5, whichever your application requires. No dismounting, no lost production.<\/p>\n<div class=\"vbm-cta-row\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/lo\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/lo\/community\/\">Ask a question on the forum<\/a>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Balancing services &rsaquo; Augers &amp; Screw Conveyors Auger &amp; Screw Conveyor Balancing &mdash; In-Situ, at Operating Speed Grain blowers, feed augers and industrial screw conveyors are long, slender rotors that develop two-plane unbalance the moment a flight wears unevenly or a weld shifts the mass distribution. We balance them on [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"parent":101558,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ai_generated_summary":"","footnotes":""},"class_list":["post-101584","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/pages\/101584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/comments?post=101584"}],"version-history":[{"count":4,"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/pages\/101584\/revisions"}],"predecessor-version":[{"id":102071,"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/pages\/101584\/revisions\/102071"}],"up":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/pages\/101558"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/lo\/wp-json\/wp\/v2\/media?parent=101584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}