{"id":101585,"date":"2026-05-30T21:41:00","date_gmt":"2026-05-30T21:41:00","guid":{"rendered":"https:\/\/vibromera.eu\/?page_id=101585"},"modified":"2026-06-05T08:46:24","modified_gmt":"2026-06-05T08:46:24","slug":"rolls-drums","status":"publish","type":"page","link":"https:\/\/vibromera.eu\/kk\/balancing-catalog\/rolls-drums\/","title":{"rendered":"Roll &#038; Drum 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\/kk\/balancing-catalog\/\">Balancing services<\/a> &rsaquo; Rolls &amp; Drums<\/p>\n<div class=\"vbm-hero2\">\n<div>\n<h1>Roll &amp; Drum Balancing &mdash; In-Situ, at Production Speed<\/h1>\n<p class=\"lede\">Paper-machine rolls, printing cylinders, calender drums, dryer rolls and conveyor drums share one characteristic: even a small mass eccentricity generates enormous centrifugal force at production speed. We balance them <strong>in place, at operating speed<\/strong> &mdash; no teardown, no shipping to a workshop &mdash; eliminating the root cause of product defects, bearing failures and web breaks in a single on-site session.<\/p>\n<div class=\"vbm-cta-row\" style=\"justify-content:flex-start\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/kk\/balanset-1a\/\">Get the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/kk\/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_20170711_130717-1024x576.webp\" alt=\"Roll and drum in-situ field balancing on a production line with Balanset-1A\" loading=\"lazy\"><\/figure>\n<\/div>\n<p class=\"vbm-answer\"><b>In short:<\/b> Roll and drum balancing is performed in-situ at normal production speed using the two-plane influence-coefficient method. Vibration sensors on both bearing housings and a laser tachometer on the shaft capture the unbalance state; the Balanset-1A calculates the exact correction mass and angle for each end of the roll. No dismounting, no line shutdown beyond sensor fitting &mdash; most jobs are complete within one hour and reduce vibration by 70&nbsp;% or more, eliminating product-quality defects and multiplying 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\">\u0416\u0438\u0456 \u049b\u043e\u0439\u044b\u043b\u0430\u0442\u044b\u043d \u0441\u04b1\u0440\u0430\u049b\u0442\u0430\u0440<\/a><br \/>\n<\/nav>\n<div class=\"vbm-sec\" id=\"signs\">\n<h2>Signs your roll or drum is out of balance<\/h2>\n<p>Rolls and drums often run for hours before an operator notices something is wrong. These are the signals that unbalance is at work:<\/p>\n<div class=\"vbm-signs\">\n<div><b>Banding or streaking on product<\/b> Periodic surface marks at intervals matching the roll circumference reveal vibration-induced nip-pressure variation during printing, coating or calendering &mdash; a direct product-quality defect traceable to rotational unbalance.<\/div>\n<div><b>Vibration at 1&times; RPM<\/b> A vibration peak locked to the fundamental shaft frequency is the clearest spectral fingerprint of mass unbalance. It rises with the square of speed and never disappears between production runs.<\/div>\n<div><b>Rapid bearing wear<\/b> Rolls requiring bearing replacements every few months are carrying a rotating dynamic load the bearings were never designed to sustain. Halving that load multiplies L<sub>10<\/sub> life by approximately eight times.<\/div>\n<div><b>Web breaks or misregistration<\/b> A vibrating nip roll destabilises web tension and leads to tears, jams or colour-to-colour registration errors in printing and converting lines.<\/div>\n<div><b>Noise rising with speed<\/b> A hum or rumble that tracks shaft speed and grows louder at higher production rates points to unbalance, not bearing noise (which appears at characteristic defect frequencies).<\/div>\n<div><b>Foundation bolt fatigue<\/b> Bolts crack or work loose as the cyclic force from the unbalanced roll hammers the machine frame with every revolution, eventually causing structural damage to the sub-frame.<\/div>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"why\">\n<h2>Why rolls and drums lose balance &mdash; and what it costs<\/h2>\n<p>A freshly ground roll leaves the workshop within tight balance tolerances, but service conditions continuously attack that state. <b>Uneven coating or rubber wear<\/b> on the roll surface redistributes mass gradually; <b>product build-up<\/b> and dried residue accumulate asymmetrically inside hollow dryer drums; <b>re-covering or re-grinding<\/b> operations remove material non-uniformly; and thermal distortion during hot calendering can shift the effective centre of mass between production shifts. Because centrifugal force scales with the <em>square<\/em> of angular velocity, a sub-millimetre eccentricity that seems harmless at slow speed becomes a destructive dynamic load at full production RPM.<\/p>\n<p>The downstream cost of ignoring roll unbalance compounds quickly: wasted rolls of off-spec product, unplanned stoppages for bearing changes, re-grind cycles that shorten roll service life, and structural fatigue in the machine frame. Field balancing addresses all of these at source and typically pays for itself the first time it prevents an unplanned stoppage.<\/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 carried by the bearing and the exponent p&nbsp;=&nbsp;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 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\/kk\/calculators\/bearing-load\/\">bearing-life calculator<\/a>.<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"how\">\n<h2>How we balance a roll or drum &mdash; step by step<\/h2>\n<p>The Balanset-1A applies the influence-coefficient method adapted to the geometry and access constraints of roll-and-drum installations. The same systematic procedure can be carried out by your own maintenance team on site:<\/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 or end-plate. The machine runs at normal production speed throughout &mdash; no disassembly, no pipe or frame removal.<\/li>\n<li><b>Measure the baseline.<\/b> A run at full production speed records vibration amplitude and phase angle at both bearing planes, establishing the current unbalance state in magnitude and direction at each end of the roll.<\/li>\n<li><b>Add a trial weight.<\/b> A known test mass is clamped or bolted at a specified angular position on one roll end-plate, collar or journal. A second run shows how each plane responds to that known perturbation &mdash; the influence coefficient for that roll and speed.<\/li>\n<li><b>Let the device calculate.<\/b> The Balanset-1A solves the two-plane influence-coefficient equations and outputs the correction mass and clock angle for each end of the roll or drum body.<\/li>\n<li><b>Fit the correction weights.<\/b> Correction masses are bolted, welded or clamped at the calculated positions on both ends of the drum body or roll journals. Trial weight is removed unless it forms part of the solution.<\/li>\n<li><b>Verify and document.<\/b> A final run at production speed confirms residual unbalance is within the ISO 21940-11 grade required for the roll class and operating speed. The Balanset-1A generates a report documenting before-and-after unbalance values for your maintenance records.<\/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>Paper-machine press, dryer and calender rolls<\/li>\n<li>Printing and flexographic impression cylinders<\/li>\n<li>Coating and laminating rolls<\/li>\n<li>Conveyor head and tail drums<\/li>\n<li>Rubber-covered and polyurethane-clad rolls<\/li>\n<li>Leather-processing and embossing cylinders<\/li>\n<li>Steel and cast-iron industrial process drums<\/li>\n<li>Textile calendar and finishing rolls<\/li>\n<li>Rotary drying drums and kilns<\/li>\n<li>Custom hollow cylinders and mandrels<\/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) defines residual specific unbalance limits for rigid rotors as a function of service speed and balance quality grade G. Paper-machine press and dryer rolls are commonly balanced to <b>G&nbsp;1.0 or G&nbsp;2.5<\/b> because even small vibration at production speed causes measurable product defects; heavy conveyor and process drums may be accepted at <b>G&nbsp;6.3<\/b>.<\/p>\n<p>For paper-machine rolls specifically, <b>ISO 5343 \/ TAPPI TIP<\/b> series provides additional guidance on roll vibration acceptance limits at running speed, including critical-speed margins and nip-pressure uniformity requirements. We confirm the grade achieved in a documented residual-unbalance report delivered at the end of every job. Use our <a href=\"https:\/\/vibromera.eu\/kk\/calculators\/paper-machine-roll-balance\/\">paper-machine roll balance calculator<\/a> to pre-calculate the permissible residual unbalance for your roll dimensions and speed before starting the job.<\/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\/kk\/balanset-1a\/\">\u0411\u0430\u043b\u0430\u043d\u0441\u0435\u0442-1\u0410<\/a>. It is a two-channel dynamic balancer and vibration analyzer that balances rolls and drums <strong>in their own bearings, at production speed<\/strong>, using the 3-run influence-coefficient method &mdash; the software calculates the exact correction mass and angle for each end of the roll and saves a documented 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\/kk\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/kk\/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 rolls and drums 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 dedicated roll-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>0.05&ndash;100 mm\/s<\/td>\n<\/tr>\n<tr>\n<td>Frequency range<\/td>\n<td>5&ndash;300 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 roll?<\/h2>\n<table class=\"vbm-table\">\n<caption>Comparison: in-situ field balancing vs dedicated roll-balancing machine<\/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>Roll removed from the line?<\/td>\n<td class=\"yes\">No &mdash; runs in place<\/td>\n<td class=\"no\">Yes &mdash; full dismounting required<\/td>\n<\/tr>\n<tr>\n<td>Production line shutdown?<\/td>\n<td>Sensor fitting only (&lt;15 min)<\/td>\n<td>Hours to days (remove, transport, balance, reinstall)<\/td>\n<\/tr>\n<tr>\n<td>Balancing speed<\/td>\n<td>Actual production speed &amp; temperature<\/td>\n<td>Separate low-speed spindle, room temperature<\/td>\n<\/tr>\n<tr>\n<td>Accounts for thermal distortion<\/td>\n<td class=\"yes\">Yes &mdash; roll balanced at operating temperature<\/td>\n<td class=\"no\">No &mdash; cold-state only<\/td>\n<\/tr>\n<tr>\n<td>Accounts for shaft\/coupling flex<\/td>\n<td class=\"yes\">Yes &mdash; full assembly balanced in own bearings<\/td>\n<td class=\"no\">Roll body only<\/td>\n<\/tr>\n<tr>\n<td>Standards met<\/td>\n<td>ISO 21940-11, ISO 5343 \/ TAPPI TIP<\/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;15,000 &ndash; &euro;80,000+<\/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 roll can run and the rotor rigidity criterion is satisfied. A workshop machine remains appropriate for new-build rolls where zero run time is available, or for rolls with thermal instability so severe that they cannot reach a stable balance state at operating temperature without structural repair first.<\/p>\n<\/div>\n<div class=\"vbm-sec\" id=\"cases\">\n<h2>Real roll-balancing cases<\/h2>\n<div class=\"vbm-cases\">\n<a class=\"vbm-case\" href=\"https:\/\/vibromera.eu\/kk\/example\/balancing-the-rotor-of-the-machine-for-leather-processing\/\"><img decoding=\"async\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2017\/12\/IMG_20170711_130717-1024x576.webp\" alt=\"Leather-processing roll two-plane field balancing to eliminate product surface defects\" loading=\"lazy\"><\/p>\n<div class=\"body\">\n<h3>Leather-processing roll<\/h3>\n<p>Two-plane field balancing of a leather-processing cylinder, eliminating product surface defects and ending repeated bearing failures.<\/p>\n<\/div>\n<p><\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec\" id=\"calc\">\n<h2>Free roll &amp; drum calculators<\/h2>\n<div class=\"vbm-chips\">\n<a href=\"https:\/\/vibromera.eu\/kk\/calculators\/paper-machine-roll-balance\/\">Paper-machine roll balance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/calculators\/residual-unbalance-iso1940\/\">Residual unbalance (ISO 1940)<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/calculators\/trial-weight-calculator\/\">Trial weight calculator<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/calculators\/centrifugal-force-unbalance\/\">Centrifugal force from unbalance<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/calculators\/bearing-load\/\">Bearing-life calculator<\/a>\n<\/div>\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\/kk\/glossary\/field-balancing\/\">\u04e8\u0440\u0456\u0441\u0442\u0456 \u0442\u0435\u04a3\u0435\u0441\u0442\u0456\u0440\u0443<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/glossary\/two-plane-balancing\/\">Two-plane balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/glossary\/dynamic-balancing\/\">Dynamic balancing<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/glossary\/balance-quality\/\">Balance quality grades<\/a><br \/>\n<a href=\"https:\/\/vibromera.eu\/kk\/glossary\/residual-unbalance\/\">Residual unbalance<\/a>\n<\/div>\n<\/div>\n<div class=\"vbm-sec vbm-faq\" id=\"faq\">\n<h2>Roll &amp; drum balancing FAQ<\/h2>\n<details>\n<summary>Can a roll be balanced without removing it from the machine?<\/summary>\n<div class=\"ans\">Yes. Field balancing is done with the roll running in its own bearings and housings at normal production speed. No dismounting, no sending the roll to a workshop. Access to both end-bearing housings is required to mount the sensors, and there must be a way to attach correction weights to each end of the roll &mdash; typically bolted or clamped to an end-plate, collar or journal.<\/div>\n<\/details>\n<details>\n<summary>Why does a freshly re-covered roll vibrate more than the old one?<\/summary>\n<div class=\"ans\">Re-covering or re-grinding removes and adds rubber or coating at varying rates around the circumference, easily shifting the mass centre by several tenths of a millimetre. Balancing after any re-covering or re-grinding operation is standard practice and explicitly recommended in ISO 21940-11. The Balanset-1A makes this a quick on-machine procedure rather than a workshop round-trip.<\/div>\n<\/details>\n<details>\n<summary>What balance grade is required for a printing cylinder?<\/summary>\n<div class=\"ans\">High-speed printing cylinders typically require ISO 21940-11 grade G&nbsp;1.0 because even a small residual unbalance produces nip-pressure variation that appears as a repeating band pattern on the printed product. Use the <a href=\"https:\/\/vibromera.eu\/kk\/calculators\/residual-unbalance-iso1940\/\">residual-unbalance calculator<\/a> to work out the exact allowance for your cylinder diameter, length and running speed before starting the job.<\/div>\n<\/details>\n<details>\n<summary>Our conveyor drum vibrates but the belt looks fine &mdash; is it the drum?<\/summary>\n<div class=\"ans\">Not necessarily. First confirm that the vibration peak is at exactly 1&times; RPM &mdash; a frequency proportional to shaft speed. Belt-frequency vibration, misalignment (2&times; RPM) and bearing defects produce different spectral patterns. The Balanset-1A measures both amplitude and phase so you can confirm the source before adding any correction weight, avoiding unnecessary intervention.<\/div>\n<\/details>\n<details>\n<summary>How long does a typical roll-balancing job take?<\/summary>\n<div class=\"ans\">Most single-roll jobs are complete in under an hour: a baseline run, a trial-weight run, fit the corrections and a verification run. Wide rolls with severe initial unbalance may need a second iteration, but two iterations are still usually finished within a normal maintenance window without disrupting the production schedule.<\/div>\n<\/details>\n<details>\n<summary>Can we do it ourselves with the Balanset-1A?<\/summary>\n<div class=\"ans\">Yes. The Balanset-1A is designed for maintenance teams to operate without specialist vibration training. It guides you through each measurement run, solves the two-plane influence-coefficient equations automatically, and outputs the correction mass and angle for each roll end. Full software documentation and our <a href=\"https:\/\/vibromera.eu\/kk\/community\/\">community forum<\/a> are available if you encounter an unusual roll geometry or want to verify your approach with an engineer.<\/div>\n<\/details>\n<\/div>\n<div class=\"vbm-band\">\n<h2>Balance your rolls and drums &mdash; in place, at production speed<\/h2>\n<p>The Balanset-1A performs two-plane field balancing on any roll or drum at production speed, calculates the exact correction mass and angle for each end, and delivers a documented residual-unbalance result to ISO 21940-11. No dismounting, no shipping to a workshop, no lost production &mdash; just consistent product quality, quieter machinery and bearings that last.<\/p>\n<div class=\"vbm-cta-row\">\n<a class=\"vbm-btn vbm-btn-primary\" href=\"https:\/\/vibromera.eu\/kk\/balanset-1a\/\">View the Balanset-1A<\/a><br \/>\n<a class=\"vbm-btn vbm-btn-ghost\" href=\"https:\/\/vibromera.eu\/kk\/community\/\">Ask a question on the forum<\/a>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Balancing services &rsaquo; Rolls &amp; Drums Roll &amp; Drum Balancing &mdash; In-Situ, at Production Speed Paper-machine rolls, printing cylinders, calender drums, dryer rolls and conveyor drums share one characteristic: even a small mass eccentricity generates enormous centrifugal force at production speed. We balance them in place, at operating speed &mdash; [&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-101585","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/pages\/101585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/comments?post=101585"}],"version-history":[{"count":3,"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/pages\/101585\/revisions"}],"predecessor-version":[{"id":101694,"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/pages\/101585\/revisions\/101694"}],"up":[{"embeddable":true,"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/pages\/101558"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/kk\/wp-json\/wp\/v2\/media?parent=101585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}