{"id":101578,"date":"2026-05-30T21:41:00","date_gmt":"2026-05-30T21:41:00","guid":{"rendered":"https:\/\/vibromera.eu\/?page_id=101578"},"modified":"2026-07-02T19:03:05","modified_gmt":"2026-07-02T19:03:05","slug":"reduce-vibration","status":"publish","type":"page","link":"https:\/\/vibromera.eu\/te\/balancing-catalog\/reduce-vibration\/","title":{"rendered":"\u0c2f\u0c02\u0c24\u0c4d\u0c30 \u0c15\u0c02\u0c2a\u0c28\u0c3e\u0c28\u0c4d\u0c28\u0c3f \u0c24\u0c4a\u0c32\u0c17\u0c3f\u0c02\u0c1a\u0c02\u0c21\u0c3f"},"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\/balancing-catalog\/\">Balancing services<\/a> &rsaquo; Reduce Machine Vibration<\/p>\n<div class=\"vbm-hero2\">\n<div>\n<h1>How to Eliminate Machine Vibration &mdash; Diagnose, Then Fix<\/h1>\n<p class=\"lede\">Excessive vibration in rotating machinery shortens bearing life, destroys seals, cracks welds and triggers unplanned shutdowns. Before adding a balance weight, you need to know whether the culprit is <strong>imbalance, misalignment, looseness, bearing damage or resonance<\/strong> &mdash; each fault has a distinct frequency fingerprint. This page shows you how to read that fingerprint and, once unbalance is confirmed, how to eliminate it by field balancing at operating speed.<\/p>\n<div class=\"vbm-cta-row\" style=\"justify-content:flex-start\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/balanset-1a\/\">Get the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/community\/\">Ask our engineer<\/a>\n<\/div>\n<\/div>\n<figure class=\"media\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2025\/06\/ChatGPT-Image-19-%D0%B8%D1%8E%D0%BD.-%202025-%D0%B3.-%2018_31_25.webp\" alt=\"Diagnosing and eliminating machine vibration on site with Balanset-1A\" loading=\"lazy\"><\/figure>\n<\/div>\n<p class=\"vbm-answer\"><b>In short:<\/b> To reduce vibration in a rotating machine, first measure the FFT spectrum to identify the dominant frequency. A peak at exactly 1&times; RPM with a stable phase angle means imbalance &mdash; the most common and most correctable cause. Field balancing with the Balanset-1A attaches vibration sensors and a laser tachometer to the running machine, calculates the exact correction mass and angle in two or three short measurement runs, and eliminates the unbalance without removing the rotor from its bearings. A typical job takes under one hour and typically reduces vibration by 70&nbsp;% or more, extending bearing life by up to 10&times;.<\/p>\n<nav class=\"vbm-toc\">\n<a href=\"#causes\">Diagnose the cause<\/a><br \/>\n<a href=\"#signs\">Symptoms of imbalance<\/a><br \/>\n<a href=\"#why\">Why imbalance matters<\/a><br \/>\n<a href=\"#how\">Step by step<\/a><br \/>\n<a href=\"#what\">Equipment we balance<\/a><br \/>\n<a href=\"#standards\">Standards<\/a><br \/>\n<a href=\"#device\">The Balanset-1A<\/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=\"causes\">\n<h2>Diagnose the cause before you act<\/h2>\n<p>Different faults vibrate at different frequencies and in different directions. Measuring amplitude, phase and the FFT spectrum before any intervention tells you exactly what you are dealing with. The table below is a quick reference &mdash; read it before touching a single bolt.<\/p>\n<table class=\"vbm-table\">\n<caption>Vibration fault diagnostic guide<\/caption>\n<thead>\n<tr>\n<th>Fault<\/th>\n<th>Dominant frequency<\/th>\n<th>Direction<\/th>\n<th>Key clue<\/th>\n<th>First action<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><b>Imbalance<\/b><\/td>\n<td>1&times; RPM only<\/td>\n<td>Radial<\/td>\n<td>Phase stable; trial weight changes amplitude &amp; phase together<\/td>\n<td>Field balance (see below)<\/td>\n<\/tr>\n<tr>\n<td><b>Misalignment<\/b><\/td>\n<td>1&times; + strong 2&times; RPM<\/td>\n<td>Axial elevated<\/td>\n<td>Coupling runs hot; high axial vs radial ratio<\/td>\n<td>Realign shaft train first<\/td>\n<\/tr>\n<tr>\n<td><b>Bearing damage<\/b><\/td>\n<td>BPFO \/ BPFI \/ BSF (non-integer of RPM)<\/td>\n<td>Radial<\/td>\n<td>Rising overall trend over weeks; no link to speed change<\/td>\n<td>Replace bearing, then balance<\/td>\n<\/tr>\n<tr>\n<td><b>Structural looseness<\/b><\/td>\n<td>0.5&times;, 1&times;, 1.5&times;, 2&times;&hellip; (many harmonics)<\/td>\n<td>Radial or axial<\/td>\n<td>Rattles at part-load; noisy comb spectrum<\/td>\n<td>Tighten \/ repair loose element<\/td>\n<\/tr>\n<tr>\n<td><b>Resonance<\/b><\/td>\n<td>Spike near natural frequency<\/td>\n<td>Variable<\/td>\n<td>Phase shifts ~180&deg; through the resonant speed<\/td>\n<td>Detune or stiffen structure; reduce excitation by balancing<\/td>\n<\/tr>\n<tr>\n<td><b>Combined faults<\/b><\/td>\n<td>Multiple peaks, unstable phase<\/td>\n<td>Mixed<\/td>\n<td>Two or three faults present simultaneously<\/td>\n<td>Fix mechanical issues first; balance last<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Rule of thumb:<\/b> if the 1&times; RPM component carries more than 80&nbsp;% of the total vibration energy and the phase angle is repeatable to within &plusmn;5&deg;, imbalance is the dominant cause and field balancing is the right next step. If other frequencies are significant, resolve them first or the balance correction will shift at the next maintenance stop.<\/p>\n<\/div>\n<div class=\"vbm-sec\" id=\"signs\">\n<h2>Recognising imbalance &mdash; the most common and fixable cause<\/h2>\n<p>Imbalance is responsible for the majority of vibration complaints on rotating equipment. These are its characteristic signs:<\/p>\n<div class=\"vbm-signs\">\n<div><b>Strong 1&times; RPM peak<\/b> A single sharp spike at running frequency dominates the FFT spectrum. The amplitude grows with the square of speed &mdash; double the RPM, quadruple the force.<\/div>\n<div><b>Stable phase angle<\/b> The phase of the 1&times; component stays constant from run to run. Unstable phase points to bearing damage, looseness or resonance instead.<\/div>\n<div><b>Predominantly radial vibration<\/b> Imbalance forces are centrifugal &mdash; they act perpendicular to the shaft axis. If axial vibration is high, look at misalignment too.<\/div>\n<div><b>Vibration grows with service hours<\/b> Corrosion, fouling, erosion and thermal distortion slowly shift the mass distribution. A pump or fan that was quiet at commissioning grows louder over months.<\/div>\n<div><b>Bearing and seal failures ahead of schedule<\/b> The centrifugal load from imbalance is an extra rotating radial force on the bearing. ISO 281 shows that even modest imbalance can halve or quarter the L<sub>10<\/sub> bearing life.<\/div>\n<div><b>Noise misread as cavitation or turbulence<\/b> Low-frequency rough noise is often attributed to hydraulic effects when the actual cause is a rotating mass offcentre by just a few grams.<\/div>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"why\">\n<h2>Why imbalance happens &mdash; and what it costs<\/h2>\n<p>Every rotor leaves the factory with a small residual unbalance &mdash; a tiny mass asymmetry that ISO 21940-11 grades are designed to control. In service, that balance shifts: <b>erosion and cavitation<\/b> attack impeller vanes unevenly, <b>fouling and scale<\/b> accumulate non-symmetrically on fan blades, a welded repair or replacement vane adds asymmetric mass, and thermal distortion during start-up or shutdown bends shaft centre lines.<\/p>\n<p>Because centrifugal force scales with the <em>square<\/em> of rotational speed, a few grams of offset at 750&nbsp;rpm becomes tens of kilonewtons of shaking force at 3,000&nbsp;rpm. That cyclic radial load fatigues rolling-element bearings, works mechanical seals loose, cracks grout and loosens hold-down bolts &mdash; which then introduce looseness and amplify every other vibration source. An unplanned shutdown caused by cascading vibration damage typically costs far more in lost production and emergency labour than a one-hour field-balancing job would have.<\/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 balancing 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> the rotating load P, and vibration amplitude tracks it directly &mdash; so cutting the 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\/calculators\/bearing-load\/\">bearing-life calculator<\/a>.<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"how\">\n<h2>How to eliminate vibration through field balancing &mdash; step by step<\/h2>\n<p>Follow this diagnostic sequence with the Balanset-1A before committing to any specific fix. Skipping steps is the most common reason balancing &#8220;doesn&rsquo;t work&#8221;:<\/p>\n<ol class=\"vbm-steps\">\n<li><b>Measure baseline vibration.<\/b> Record overall level (mm\/s RMS), the 1&times; RPM component amplitude and phase, and the full FFT spectrum. This tells you whether the dominant energy is at 1&times; (imbalance) or at other frequencies (other faults). Do not proceed to balancing if 1&times; is not dominant.<\/li>\n<li><b>Resolve mechanical faults first.<\/b> Inspect for loose hold-down bolts, worn bearing housings, shaft misalignment and obvious mechanical damage. Tighten, align and replace as needed, then re-measure. Mechanical defects corrupt influence-coefficient calculations.<\/li>\n<li><b>Confirm imbalance with a trial weight.<\/b> Attach a known trial mass to the rotor at a chosen angular position and run again. A clean change in amplitude and phase at 1&times; confirms the rotor responds to mass correction &mdash; you are dealing with imbalance, not something else.<\/li>\n<li><b>Let the device calculate the correction.<\/b> The Balanset-1A applies the influence-coefficient algorithm to compute the exact correction mass and angular position for one or two planes. Fit the correction weight (weld, bolt or clip) at the calculated angle.<\/li>\n<li><b>Verify against ISO 20816.<\/b> A final measurement run confirms that residual vibration is within the ISO 20816 acceptance zone for the machine class and that residual unbalance is within the ISO 21940-11 G-grade tolerance. The Balanset-1A saves a documented report.<\/li>\n<\/ol>\n<\/div>\n<div class=\"vbm-sec\" id=\"what\">\n<h2>Equipment we balance to reduce vibration<\/h2>\n<ul class=\"vbm-list\">\n<li>Industrial fan impellers and centrifugal blowers<\/li>\n<li>Pump rotors and centrifugal impellers<\/li>\n<li>Electric motor rotors and generator rotors<\/li>\n<li>Compressor impellers and screw-compressor rotors<\/li>\n<li>Driveshafts and cardan shafts<\/li>\n<li>Combine-harvester and agricultural machine drums<\/li>\n<li>Process rolls, drums and cylinders<\/li>\n<li>CNC spindles and toolholders<\/li>\n<li>Turbine rotors and turbocharger impellers<\/li>\n<li>Crushers, separators and centrifuge rotors<\/li>\n<li>Any rigid rotor that can be safely run with sensors and trial weights attached<\/li>\n<\/ul>\n<\/div>\n<div class=\"vbm-sec\" id=\"standards\">\n<h2>Vibration standards &amp; balance tolerances<\/h2>\n<div class=\"vbm-callout\">\n<p><b>ISO 20816<\/b> (and its predecessor ISO 10816) defines vibration-severity evaluation zones A&ndash;D measured on non-rotating parts at operating speed. Zone A is new-machine quality; Zone D means shut down immediately. The zone boundaries depend on machine group, power and support flexibility &mdash; for example, for medium machines (15&ndash;300&nbsp;kW, Group 2) on rigid supports the Zone B\/C boundary is 2.8&nbsp;mm\/s RMS, while for large machines (&gt;300&nbsp;kW, Group 1) on rigid supports it is 4.5&nbsp;mm\/s RMS. Select the applicable group and support class from the standard before judging severity; do not apply one generic limit to all machines.<\/p>\n<p><b>ISO 21940-11<\/b> (formerly ISO 1940-1) defines residual-unbalance G-grades from G0.4 (precision grinding spindles) to G40 (agricultural drives). Common industrial targets: fans and blowers G6.3, pumps and compressors G2.5, electric motors G2.5&ndash;G1.0, precision spindles G1.0 or tighter. We balance to the grade your equipment manufacturer specifies and supply documented residual-unbalance figures in the balancing report. Use our <a href=\"https:\/\/vibromera.eu\/calculators\/residual-unbalance-iso1940\/\">residual-unbalance calculator<\/a> to find your permissible tolerance before starting.<\/p>\n<\/div>\n<table class=\"vbm-table\">\n<caption>Common balance quality grades by equipment type (ISO 21940-11)<\/caption>\n<thead>\n<tr>\n<th>Equipment type<\/th>\n<th>Typical G-grade<\/th>\n<th>G value = e<sub>per<\/sub>&nbsp;&times;&nbsp;&omega; (mm\/s)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Precision grinding spindles, gyroscopes<\/td>\n<td>G0.4<\/td>\n<td>0.4&nbsp;mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Gas-turbine rotors, turbochargers<\/td>\n<td>G1.0&ndash;G2.5<\/td>\n<td>1&ndash;2.5&nbsp;mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Centrifugal pump impellers, electric motors<\/td>\n<td>G2.5<\/td>\n<td>2.5&nbsp;mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Industrial fans, blowers, centrifuges<\/td>\n<td>G6.3<\/td>\n<td>6.3&nbsp;mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Process rolls, drums, general machinery<\/td>\n<td>G6.3&ndash;G16<\/td>\n<td>6.3&ndash;16&nbsp;mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Agricultural and off-road machinery<\/td>\n<td>G16&ndash;G40<\/td>\n<td>16&ndash;40&nbsp;mm\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Note: the G number itself is the product e<sub>per<\/sub>&nbsp;&times;&nbsp;&omega; in mm\/s. The permissible residual specific unbalance depends on service speed: e<sub>per<\/sub> [g&middot;mm\/kg] = 9549 &times; G \/ n, with n in rpm &mdash; e.g. G6.3 at 3000&nbsp;rpm gives e<sub>per<\/sub> &asymp; 20&nbsp;g&middot;mm\/kg.<\/em><\/p>\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\/balanset-1a\/\">Balanset-1A<\/a>. It is a two-channel dynamic balancer and vibration analyzer that balances any rigid rotor <strong>in its own bearings, at operating speed<\/strong>, using the 3-run influence-coefficient method &mdash; the software calculates the exact correction mass and angle 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\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/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=\"cases\">\n<h2>Real vibration-reduction cases<\/h2>\n<div class=\"vbm-cases\">\n<a class=\"vbm-case\" href=\"https:\/\/vibromera.eu\/example\/why-balancing-doesnt-reduce-vibration-troubleshooting-guide-balanset-1a\/\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2025\/06\/ChatGPT-Image-19-%D0%B8%D1%8E%D0%BD.-%202025-%D0%B3.-%2018_31_25.webp\" alt=\"Troubleshooting when balancing does not reduce vibration\" loading=\"lazy\"><\/p>\n<div class=\"body\">\n<h3>When balancing doesn&rsquo;t help<\/h3>\n<p>Systematic diagnosis of a machine where balance corrections failed to reduce vibration &mdash; and what the actual cause turned out to be.<\/p>\n<\/div>\n<p><\/a><br \/>\n<a class=\"vbm-case\" href=\"https:\/\/vibromera.eu\/example\/rotors\/how-often-to-check-vibration-and-balance-rotating-equipment\/\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2024\/04\/IMG_9157-1024x683.webp\" alt=\"Vibration and balance check intervals for rotating equipment\" loading=\"lazy\"><\/p>\n<div class=\"body\">\n<h3>How often to check<\/h3>\n<p>Recommended vibration monitoring intervals for different machine types and operating environments.<\/p>\n<\/div>\n<p><\/a><br \/>\n<a class=\"vbm-case\" href=\"https:\/\/vibromera.eu\/guide-to-field-rotor-balancing-using-balanset-1a-instruments-theory-practice-and-problem-solving\/\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2025\/07\/6-1024x576.webp\" alt=\"Field balancing guide with Balanset-1A instruments\" loading=\"lazy\"><\/p>\n<div class=\"body\">\n<h3>Field balancing guide<\/h3>\n<p>Theory, practice and problem-solving for field rotor balancing with the Balanset-1A instrument.<\/p>\n<\/div>\n<p><\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"calc\">\n<h2>Free vibration &amp; balancing calculators<\/h2>\n<div class=\"vbm-chips\">\n<a href=\"https:\/\/vibromera.eu\/calculators\/centrifugal-force-unbalance\/\">Centrifugal force from unbalance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/calculators\/residual-unbalance-iso1940\/\">Residual unbalance (ISO 1940)<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/calculators\/trial-weight-calculator\/\">Trial weight calculator<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/calculators\/bearing-load\/\">Bearing-life calculator<\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec vbm-faq\" id=\"faq\">\n<h2>Vibration reduction FAQ<\/h2>\n<details>\n<summary>I balanced the rotor but the machine still vibrates &mdash; why?<\/summary>\n<div class=\"ans\">Balancing only corrects unbalance, which produces a peak at exactly 1&times; RPM. If the machine vibrates at 2&times;, at sub-harmonics or at frequencies unrelated to shaft speed, the cause is misalignment, bearing defects, looseness or resonance. Check the full FFT spectrum before balancing and confirm that the 1&times; component is actually dominant. Our troubleshooting <a href=\"https:\/\/vibromera.eu\/example\/why-balancing-doesnt-reduce-vibration-troubleshooting-guide-balanset-1a\/\">case study<\/a> walks through this diagnosis step by step.<\/div>\n<\/details>\n<details>\n<summary>How do I know whether the problem is unbalance or misalignment?<\/summary>\n<div class=\"ans\">Unbalance produces a dominant 1&times; RPM peak in the radial direction with a stable phase angle. Misalignment adds a strong 2&times; component and elevates axial vibration relative to radial &mdash; a ratio above 0.5 (axial\/radial) is a clear warning. A quick FFT spectrum on the Balanset-1A shows you which is dominant. If both faults are present, fix misalignment first &mdash; alignment errors corrupt the influence coefficients needed for accurate balancing.<\/div>\n<\/details>\n<details>\n<summary>Can I balance a machine that also has bearing damage?<\/summary>\n<div class=\"ans\">You can, but the result will be less accurate. A rough bearing injects noise into the vibration signal and makes the phase reading less stable, reducing the precision of the trial-weight calculations. Replace the damaged bearing first, then balance. The new bearing will also reveal the true residual unbalance without the masking effect of bearing-defect frequencies.<\/div>\n<\/details>\n<details>\n<summary>What vibration level is acceptable according to ISO 20816?<\/summary>\n<div class=\"ans\">ISO 20816 divides vibration severity into four zones, and the boundaries depend on machine group, power and support flexibility. For medium industrial machines (15&ndash;300&nbsp;kW, Group 2) on rigid supports, Zone A (new-machinery quality) is below 1.4&nbsp;mm\/s RMS; Zone B is satisfactory for long-term operation (up to 2.8&nbsp;mm\/s); Zone C (up to 4.5&nbsp;mm\/s) triggers attention and planned maintenance; Zone D (above 4.5&nbsp;mm\/s) means risk of damage &mdash; plan a shutdown. For large machines (&gt;300&nbsp;kW, Group 1) on rigid supports the corresponding boundaries are 2.3 \/ 4.5 \/ 7.1&nbsp;mm\/s. Always select the applicable group and support class from the standard before judging severity.<\/div>\n<\/details>\n<details>\n<summary>How often should I check vibration and balance rotating equipment?<\/summary>\n<div class=\"ans\">Machines in dusty, abrasive or wet environments can lose balance in weeks; clean indoor machines may run months without significant shift. A practical approach is to measure vibration at each planned maintenance stop and balance whenever the 1&times; component exceeds your ISO 20816 zone threshold. Our <a href=\"https:\/\/vibromera.eu\/example\/rotors\/how-often-to-check-vibration-and-balance-rotating-equipment\/\">monitoring interval guide<\/a> gives equipment-specific recommendations.<\/div>\n<\/details>\n<details>\n<summary>What if vibration comes back soon after balancing?<\/summary>\n<div class=\"ans\">Rapid return of imbalance after a correct balance job points to an ongoing mass-change mechanism: fouling on a fan blade, ongoing erosion on a pump impeller, or a thermally induced shaft bow that appears at operating temperature. Investigate the root cause of the mass shift. Balancing will need to be repeated after cleaning or repair, or an automatic online balancing system may be worth considering for continuous-process machines.<\/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\/glossary\/field-balancing\/\">Field balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/glossary\/residual-unbalance\/\">Residual unbalance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/glossary\/balance-quality\/\">Balance quality grades<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/glossary\/dynamic-balancing\/\">Dynamic balancing<\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-band\">\n<h2>Diagnose the fault &mdash; then eliminate it<\/h2>\n<p>The Balanset-1A measures vibration amplitude, phase and the full FFT spectrum so you can confirm the root cause before committing to a correction, then balances any rigid rotor in its own bearings at operating speed and documents the result to ISO 20816 and ISO 21940-11.<\/p>\n<div class=\"vbm-cta-row\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/community\/\">Ask a question on the forum<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Balancing services &rsaquo; Reduce Machine Vibration How to Eliminate Machine Vibration &mdash; Diagnose, Then Fix Excessive vibration in rotating machinery shortens bearing life, destroys seals, cracks welds and triggers unplanned shutdowns. Before adding a balance weight, you need to know whether the culprit is imbalance, misalignment, looseness, bearing damage or [&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-101578","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/pages\/101578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/comments?post=101578"}],"version-history":[{"count":5,"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/pages\/101578\/revisions"}],"predecessor-version":[{"id":102089,"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/pages\/101578\/revisions\/102089"}],"up":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/pages\/101558"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/te\/wp-json\/wp\/v2\/media?parent=101578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}