Equivalent Dynamic Load Calculator – Rolling Bearings (ISO 281)<\/title>\n <style>\n .bearing-calc {\n --bcalc-bg: #ffffff;\n --bcalc-surface: #ffffff;\n --bcalc-surface-alt: #f8f9fb;\n --bcalc-border: #dde1e8;\n --bcalc-border-focus: #2563eb;\n --bcalc-text: #1a1d26;\n --bcalc-text-muted: #5c6370;\n --bcalc-primary: #2563eb;\n --bcalc-primary-hover: #1d4ed8;\n --bcalc-primary-light: #eff6ff;\n --bcalc-success-bg: #ecfdf5;\n --bcalc-warning-bg: #fffbeb;\n --bcalc-danger-bg: #fef2f2;\n --bcalc-shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);\n --bcalc-radius: 10px;\n --bcalc-radius-sm: 6px;\n --bcalc-font: \"Segoe UI\", system-ui, -apple-system, sans-serif;\n --bcalc-mono: \"Cascadia Code\", \"Consolas\", monospace;\n\n box-sizing: border-box;\n font-family: var(--bcalc-font);\n font-size: 16px;\n line-height: 1.5;\n color: var(--bcalc-text);\n background: var(--bcalc-bg);\n width: 100%;\n max-width: 100%;\n }\n\n .bearing-calc *,\n .bearing-calc *::before,\n .bearing-calc *::after {\n box-sizing: border-box;\n }\n\n .bearing-calc .bcalc-wrap {\n max-width: 1000px;\n margin: 0 auto;\n padding: 1.5rem;\n }\n\n .bearing-calc .bcalc-card {\n background: var(--bcalc-surface);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius);\n box-shadow: var(--bcalc-shadow);\n overflow: hidden;\n }\n\n .bearing-calc .bcalc-card-header {\n padding: .85rem 1.25rem;\n background: var(--bcalc-surface-alt);\n border-bottom: 1px solid var(--bcalc-border);\n font-size: .8rem;\n font-weight: 700;\n text-transform: uppercase;\n letter-spacing: .06em;\n color: var(--bcalc-text-muted);\n margin: 0;\n }\n\n .bearing-calc .bcalc-card-body {\n padding: 1.25rem;\n }\n\n .bearing-calc .bcalc-section-title {\n font-size: .8rem;\n font-weight: 700;\n text-transform: uppercase;\n letter-spacing: .06em;\n color: var(--bcalc-text-muted);\n margin: 0 0 .85rem;\n padding-bottom: .5rem;\n border-bottom: 1px solid var(--bcalc-border);\n }\n\n .bearing-calc .bcalc-input-section + .bcalc-input-section {\n margin-top: 1.25rem;\n padding-top: 1.25rem;\n border-top: 1px solid var(--bcalc-border);\n }\n\n .bearing-calc .bcalc-form-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n }\n\n @media (max-width: 600px) {\n .bearing-calc .bcalc-form-grid {\n grid-template-columns: 1fr;\n }\n }\n\n .bearing-calc .bcalc-form-group {\n display: flex;\n flex-direction: column;\n gap: .35rem;\n margin: 0;\n padding: 0;\n }\n\n .bearing-calc .bcalc-form-group.bcalc-full-width {\n grid-column: 1 \/ -1;\n }\n\n .bearing-calc .bcalc-form-group label {\n font-size: .82rem;\n font-weight: 600;\n color: var(--bcalc-text);\n margin: 0;\n padding: 0;\n display: block;\n }\n\n .bearing-calc .bcalc-unit {\n font-weight: 400;\n color: var(--bcalc-text-muted);\n }\n\n .bearing-calc input[type=\"number\"],\n .bearing-calc select {\n width: 100%;\n max-width: 100%;\n margin: 0;\n padding: .55rem .75rem;\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n font-size: .92rem;\n font-family: var(--bcalc-font);\n background: var(--bcalc-surface);\n color: var(--bcalc-text);\n line-height: 1.4;\n height: auto;\n min-height: 0;\n box-shadow: none;\n transition: border-color .15s, box-shadow .15s;\n -webkit-appearance: none;\n appearance: none;\n }\n\n .bearing-calc input[type=\"number\"]:focus,\n .bearing-calc select:focus {\n outline: none;\n border-color: var(--bcalc-border-focus);\n box-shadow: 0 0 0 3px rgba(37,99,235,.15);\n }\n\n .bearing-calc input[type=\"number\"]:disabled {\n background: var(--bcalc-surface-alt);\n color: var(--bcalc-text-muted);\n cursor: not-allowed;\n opacity: 1;\n }\n\n .bearing-calc .bcalc-toggle-row {\n display: flex;\n align-items: center;\n gap: .75rem;\n padding: .65rem .85rem;\n background: var(--bcalc-surface-alt);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n }\n\n .bearing-calc .bcalc-toggle-row input[type=\"checkbox\"] {\n width: 18px;\n height: 18px;\n min-width: 18px;\n margin: 0;\n accent-color: var(--bcalc-primary);\n cursor: pointer;\n }\n\n .bearing-calc .bcalc-toggle-row label {\n cursor: pointer;\n font-size: .85rem;\n font-weight: 400;\n margin: 0;\n }\n\n .bearing-calc .bcalc-factor-hint {\n font-size: .75rem;\n color: var(--bcalc-text-muted);\n margin: .15rem 0 0;\n }\n\n .bearing-calc .bcalc-factor-hint.bcalc-auto {\n color: var(--bcalc-primary);\n }\n\n .bearing-calc .bcalc-btn-calculate {\n display: block;\n width: 33.33%;\n margin: 1.5rem auto 0;\n padding: 1rem 1.5rem;\n background: var(--bcalc-primary);\n color: #fff;\n border: none;\n border-radius: var(--bcalc-radius-sm);\n font-size: .95rem;\n font-family: var(--bcalc-font);\n font-weight: 600;\n line-height: 1.4;\n text-align: center;\n text-transform: none;\n letter-spacing: normal;\n cursor: pointer;\n box-shadow: none;\n transition: background .15s, transform .1s;\n -webkit-appearance: none;\n appearance: none;\n }\n\n .bearing-calc .bcalc-btn-calculate:hover {\n background: var(--bcalc-primary-hover);\n color: #fff;\n }\n\n .bearing-calc .bcalc-btn-calculate:active {\n transform: scale(.985);\n }\n\n .bearing-calc .bcalc-results-panel {\n margin-top: 1.25rem;\n display: none;\n }\n\n .bearing-calc .bcalc-results-panel.bcalc-visible {\n display: block !important;\n }\n\n .bearing-calc .bcalc-result-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: .75rem;\n }\n\n @media (max-width: 600px) {\n .bearing-calc .bcalc-result-grid {\n grid-template-columns: 1fr;\n }\n }\n\n .bearing-calc .bcalc-result-item {\n padding: .85rem 1rem;\n background: var(--bcalc-surface-alt);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n }\n\n .bearing-calc .bcalc-result-item.bcalc-highlight {\n grid-column: 1 \/ -1;\n background: var(--bcalc-primary-light);\n border-color: #bfdbfe;\n }\n\n .bearing-calc .bcalc-result-label {\n font-size: .72rem;\n font-weight: 600;\n text-transform: uppercase;\n letter-spacing: .05em;\n color: var(--bcalc-text-muted);\n margin: 0;\n }\n\n .bearing-calc .bcalc-result-value {\n font-size: 1.35rem;\n font-weight: 700;\n font-family: var(--bcalc-mono);\n color: var(--bcalc-text);\n margin: .2rem 0 0;\n line-height: 1.3;\n }\n\n .bearing-calc .bcalc-result-item.bcalc-highlight .bcalc-result-value {\n font-size: 1.65rem;\n color: var(--bcalc-primary);\n }\n\n .bearing-calc .bcalc-result-unit {\n font-size: .8rem;\n font-weight: 500;\n color: var(--bcalc-text-muted);\n }\n\n .bearing-calc .bcalc-status-banner {\n margin-top: .85rem;\n padding: .7rem 1rem;\n border-radius: var(--bcalc-radius-sm);\n font-size: .84rem;\n display: none;\n align-items: flex-start;\n gap: .5rem;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-visible {\n display: flex;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-ok {\n background: var(--bcalc-success-bg);\n border: 1px solid #a7f3d0;\n color: #065f46;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-warn {\n background: var(--bcalc-warning-bg);\n border: 1px solid #fcd34d;\n color: #92400e;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-error {\n background: var(--bcalc-danger-bg);\n border: 1px solid #fca5a5;\n color: #991b1b;\n }\n\n .bearing-calc .bcalc-status-icon {\n font-size: 1rem;\n flex-shrink: 0;\n line-height: 1.4;\n }\n\n #bcalc-script-src {\n display: none !important;\n }\n <\/style>\n<\/head>\n<body>\n\n\n<div id=\"bearing-calc-app\" class=\"bearing-calc\">\n <div class=\"bcalc-wrap\">\n\n <div class=\"bcalc-card\">\n <div class=\"bcalc-card-header\">Input Parameters<\/div>\n <div class=\"bcalc-card-body\">\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Bearing Parameters<\/div>\n <div class=\"bcalc-form-grid\">\n <div class=\"bcalc-form-group bcalc-full-width\">\n <label for=\"bcalc-bearingType\">Bearing Type<\/label>\n <select id=\"bcalc-bearingType\">\n <option value=\"deepGroove\">Deep Groove Ball Bearing<\/option>\n <option value=\"angularContact\">Angular Contact Ball Bearing<\/option>\n <option value=\"taperedRoller\">Tapered Roller Bearing<\/option>\n <option value=\"sphericalRoller\">Spherical Roller Bearing<\/option>\n <\/select>\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-loadRating\">Basic Dynamic Load Rating <span class=\"bcalc-unit\">(C) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-loadRating\" min=\"0\" step=\"any\" value=\"45\" placeholder=\"e.g. 45\">\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-speed\">Rotational Speed <span class=\"bcalc-unit\">(n) [rpm]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-speed\" min=\"0\" step=\"any\" value=\"1500\" placeholder=\"e.g. 1500\">\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Operating Conditions<\/div>\n <div class=\"bcalc-form-grid\">\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-radialLoad\">Radial Load <span class=\"bcalc-unit\">(Fr) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-radialLoad\" min=\"0\" step=\"any\" value=\"10\" placeholder=\"e.g. 10\">\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-axialLoad\">Axial Load <span class=\"bcalc-unit\">(Fa) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-axialLoad\" min=\"0\" step=\"any\" value=\"2\" placeholder=\"e.g. 2\">\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Load Factors (X & Y)<\/div>\n <div class=\"bcalc-toggle-row\">\n <input type=\"checkbox\" id=\"bcalc-manualFactors\">\n <label for=\"bcalc-manualFactors\">Manual override – enter X and Y values directly<\/label>\n <\/div>\n <div class=\"bcalc-form-grid\" style=\"margin-top:1rem\">\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-factorX\">Radial Factor <span class=\"bcalc-unit\">(X)<\/span><\/label>\n <input type=\"number\" id=\"bcalc-factorX\" min=\"0\" step=\"any\" value=\"1\" disabled>\n <div class=\"bcalc-factor-hint bcalc-auto\" id=\"bcalc-hintX\">Auto: X = 1.00 (Fa\/Fr <= e)<\/div>\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-factorY\">Axial Factor <span class=\"bcalc-unit\">(Y)<\/span><\/label>\n <input type=\"number\" id=\"bcalc-factorY\" min=\"0\" step=\"any\" value=\"0\" disabled>\n <div class=\"bcalc-factor-hint bcalc-auto\" id=\"bcalc-hintY\">Auto: Y = 0.00 (Fa\/Fr <= e)<\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <button type=\"button\" class=\"bcalc-btn-calculate\" id=\"bcalc-btnCalculate\">Calculate<\/button>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-card bcalc-results-panel\" id=\"bcalc-resultsPanel\">\n <div class=\"bcalc-card-header\">Calculation Results<\/div>\n <div class=\"bcalc-card-body\">\n <div class=\"bcalc-result-grid\">\n <div class=\"bcalc-result-item bcalc-highlight\">\n <div class=\"bcalc-result-label\">Equivalent Dynamic Load (P)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resP\">– <span class=\"bcalc-result-unit\">kN<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Axial \/ Radial Ratio (Fa\/Fr)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resRatio\">–<\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Rating Life (L10)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resL10\">– <span class=\"bcalc-result-unit\">x10^6 rev<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Operating Life (L10h)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resL10h\">– <span class=\"bcalc-result-unit\">hours<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Life Exponent (p)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resPexp\">–<\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Boundary Ratio (e)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resE\">–<\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-status-banner\" id=\"bcalc-statusBanner\">\n <span class=\"bcalc-status-icon\" id=\"bcalc-statusIcon\"><\/span>\n <span id=\"bcalc-statusText\"><\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <\/div>\n<\/div>\n\n<script type=\"text\/plain\" 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{"id":24606,"date":"2026-08-12T06:12:32","date_gmt":"2026-08-12T06:12:32","guid":{"rendered":"https:\/\/www.mechstream.com\/?p=24606"},"modified":"2026-08-12T06:41:16","modified_gmt":"2026-08-12T06:41:16","slug":"equivalent-dynamic-load-calculator","status":"publish","type":"post","link":"https:\/\/www.mechstream.com\/pt\/equivalent-dynamic-load-calculator\/","title":{"rendered":"Equivalent Dynamic Load Calculator"},"content":{"rendered":"\n

The Equivalent Dynamic Load Calculator<\/strong> is a practical engineering tool designed to calculate the equivalent dynamic load acting on bearings under combined radial and axial loading conditions. By entering key parameters such as radial load, axial load, and applicable load factors, users can quickly determine an equivalent load for bearing life and performance analysis. The Equivalent Dynamic Load Calculator<\/strong> helps engineers, designers, and technicians simplify bearing calculations, evaluate operating loads, select suitable bearings, and improve the reliability of rotating machinery. It is suitable for gearboxes, motors, pumps, machine tools, automotive systems, and other mechanical applications. Whether you are designing a new bearing system or checking an existing installation, this calculator provides a fast and convenient way to support bearing load analysis and mechanical design.<\/p>\n\n\n\n\n\n\n\n \n \n Equivalent Dynamic Load Calculator – Rolling Bearings (ISO 281)<\/title>\n <style>\n .bearing-calc {\n --bcalc-bg: #ffffff;\n --bcalc-surface: #ffffff;\n --bcalc-surface-alt: #f8f9fb;\n --bcalc-border: #dde1e8;\n --bcalc-border-focus: #2563eb;\n --bcalc-text: #1a1d26;\n --bcalc-text-muted: #5c6370;\n --bcalc-primary: #2563eb;\n --bcalc-primary-hover: #1d4ed8;\n --bcalc-primary-light: #eff6ff;\n --bcalc-success-bg: #ecfdf5;\n --bcalc-warning-bg: #fffbeb;\n --bcalc-danger-bg: #fef2f2;\n --bcalc-shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);\n --bcalc-radius: 10px;\n --bcalc-radius-sm: 6px;\n --bcalc-font: \"Segoe UI\", system-ui, -apple-system, sans-serif;\n --bcalc-mono: \"Cascadia Code\", \"Consolas\", monospace;\n\n box-sizing: border-box;\n font-family: var(--bcalc-font);\n font-size: 16px;\n line-height: 1.5;\n color: var(--bcalc-text);\n background: var(--bcalc-bg);\n width: 100%;\n max-width: 100%;\n }\n\n .bearing-calc *,\n .bearing-calc *::before,\n .bearing-calc *::after {\n box-sizing: border-box;\n }\n\n .bearing-calc .bcalc-wrap {\n max-width: 1000px;\n margin: 0 auto;\n padding: 1.5rem;\n }\n\n .bearing-calc .bcalc-card {\n background: var(--bcalc-surface);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius);\n box-shadow: var(--bcalc-shadow);\n overflow: hidden;\n }\n\n .bearing-calc .bcalc-card-header {\n padding: .85rem 1.25rem;\n background: var(--bcalc-surface-alt);\n border-bottom: 1px solid var(--bcalc-border);\n font-size: .8rem;\n font-weight: 700;\n text-transform: uppercase;\n letter-spacing: .06em;\n color: var(--bcalc-text-muted);\n margin: 0;\n }\n\n .bearing-calc .bcalc-card-body {\n padding: 1.25rem;\n }\n\n .bearing-calc .bcalc-section-title {\n font-size: .8rem;\n font-weight: 700;\n text-transform: uppercase;\n letter-spacing: .06em;\n color: var(--bcalc-text-muted);\n margin: 0 0 .85rem;\n padding-bottom: .5rem;\n border-bottom: 1px solid var(--bcalc-border);\n }\n\n .bearing-calc .bcalc-input-section + .bcalc-input-section {\n margin-top: 1.25rem;\n padding-top: 1.25rem;\n border-top: 1px solid var(--bcalc-border);\n }\n\n .bearing-calc .bcalc-form-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n }\n\n @media (max-width: 600px) {\n .bearing-calc .bcalc-form-grid {\n grid-template-columns: 1fr;\n }\n }\n\n .bearing-calc .bcalc-form-group {\n display: flex;\n flex-direction: column;\n gap: .35rem;\n margin: 0;\n padding: 0;\n }\n\n .bearing-calc .bcalc-form-group.bcalc-full-width {\n grid-column: 1 \/ -1;\n }\n\n .bearing-calc .bcalc-form-group label {\n font-size: .82rem;\n font-weight: 600;\n color: var(--bcalc-text);\n margin: 0;\n padding: 0;\n display: block;\n }\n\n .bearing-calc .bcalc-unit {\n font-weight: 400;\n color: var(--bcalc-text-muted);\n }\n\n .bearing-calc input[type=\"number\"],\n .bearing-calc select {\n width: 100%;\n max-width: 100%;\n margin: 0;\n padding: .55rem .75rem;\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n font-size: .92rem;\n font-family: var(--bcalc-font);\n background: var(--bcalc-surface);\n color: var(--bcalc-text);\n line-height: 1.4;\n height: auto;\n min-height: 0;\n box-shadow: none;\n transition: border-color .15s, box-shadow .15s;\n -webkit-appearance: none;\n appearance: none;\n }\n\n .bearing-calc input[type=\"number\"]:focus,\n .bearing-calc select:focus {\n outline: none;\n border-color: var(--bcalc-border-focus);\n box-shadow: 0 0 0 3px rgba(37,99,235,.15);\n }\n\n .bearing-calc input[type=\"number\"]:disabled {\n background: var(--bcalc-surface-alt);\n color: var(--bcalc-text-muted);\n cursor: not-allowed;\n opacity: 1;\n }\n\n .bearing-calc .bcalc-toggle-row {\n display: flex;\n align-items: center;\n gap: .75rem;\n padding: .65rem .85rem;\n background: var(--bcalc-surface-alt);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n }\n\n .bearing-calc .bcalc-toggle-row input[type=\"checkbox\"] {\n width: 18px;\n height: 18px;\n min-width: 18px;\n margin: 0;\n accent-color: var(--bcalc-primary);\n cursor: pointer;\n }\n\n .bearing-calc .bcalc-toggle-row label {\n cursor: pointer;\n font-size: .85rem;\n font-weight: 400;\n margin: 0;\n }\n\n .bearing-calc .bcalc-factor-hint {\n font-size: .75rem;\n color: var(--bcalc-text-muted);\n margin: .15rem 0 0;\n }\n\n .bearing-calc .bcalc-factor-hint.bcalc-auto {\n color: var(--bcalc-primary);\n }\n\n .bearing-calc .bcalc-btn-calculate {\n display: block;\n width: 33.33%;\n margin: 1.5rem auto 0;\n padding: 1rem 1.5rem;\n background: var(--bcalc-primary);\n color: #fff;\n border: none;\n border-radius: var(--bcalc-radius-sm);\n font-size: .95rem;\n font-family: var(--bcalc-font);\n font-weight: 600;\n line-height: 1.4;\n text-align: center;\n text-transform: none;\n letter-spacing: normal;\n cursor: pointer;\n box-shadow: none;\n transition: background .15s, transform .1s;\n -webkit-appearance: none;\n appearance: none;\n }\n\n .bearing-calc .bcalc-btn-calculate:hover {\n background: var(--bcalc-primary-hover);\n color: #fff;\n }\n\n .bearing-calc .bcalc-btn-calculate:active {\n transform: scale(.985);\n }\n\n .bearing-calc .bcalc-results-panel {\n margin-top: 1.25rem;\n display: none;\n }\n\n .bearing-calc .bcalc-results-panel.bcalc-visible {\n display: block !important;\n }\n\n .bearing-calc .bcalc-result-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: .75rem;\n }\n\n @media (max-width: 600px) {\n .bearing-calc .bcalc-result-grid {\n grid-template-columns: 1fr;\n }\n }\n\n .bearing-calc .bcalc-result-item {\n padding: .85rem 1rem;\n background: var(--bcalc-surface-alt);\n border: 1px solid var(--bcalc-border);\n border-radius: var(--bcalc-radius-sm);\n }\n\n .bearing-calc .bcalc-result-item.bcalc-highlight {\n grid-column: 1 \/ -1;\n background: var(--bcalc-primary-light);\n border-color: #bfdbfe;\n }\n\n .bearing-calc .bcalc-result-label {\n font-size: .72rem;\n font-weight: 600;\n text-transform: uppercase;\n letter-spacing: .05em;\n color: var(--bcalc-text-muted);\n margin: 0;\n }\n\n .bearing-calc .bcalc-result-value {\n font-size: 1.35rem;\n font-weight: 700;\n font-family: var(--bcalc-mono);\n color: var(--bcalc-text);\n margin: .2rem 0 0;\n line-height: 1.3;\n }\n\n .bearing-calc .bcalc-result-item.bcalc-highlight .bcalc-result-value {\n font-size: 1.65rem;\n color: var(--bcalc-primary);\n }\n\n .bearing-calc .bcalc-result-unit {\n font-size: .8rem;\n font-weight: 500;\n color: var(--bcalc-text-muted);\n }\n\n .bearing-calc .bcalc-status-banner {\n margin-top: .85rem;\n padding: .7rem 1rem;\n border-radius: var(--bcalc-radius-sm);\n font-size: .84rem;\n display: none;\n align-items: flex-start;\n gap: .5rem;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-visible {\n display: flex;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-ok {\n background: var(--bcalc-success-bg);\n border: 1px solid #a7f3d0;\n color: #065f46;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-warn {\n background: var(--bcalc-warning-bg);\n border: 1px solid #fcd34d;\n color: #92400e;\n }\n\n .bearing-calc .bcalc-status-banner.bcalc-error {\n background: var(--bcalc-danger-bg);\n border: 1px solid #fca5a5;\n color: #991b1b;\n }\n\n .bearing-calc .bcalc-status-icon {\n font-size: 1rem;\n flex-shrink: 0;\n line-height: 1.4;\n }\n\n #bcalc-script-src {\n display: none !important;\n }\n <\/style>\n<\/head>\n<body>\n\n\n<div id=\"bearing-calc-app\" class=\"bearing-calc\">\n <div class=\"bcalc-wrap\">\n\n <div class=\"bcalc-card\">\n <div class=\"bcalc-card-header\">Input Parameters<\/div>\n <div class=\"bcalc-card-body\">\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Bearing Parameters<\/div>\n <div class=\"bcalc-form-grid\">\n <div class=\"bcalc-form-group bcalc-full-width\">\n <label for=\"bcalc-bearingType\">Bearing Type<\/label>\n <select id=\"bcalc-bearingType\">\n <option value=\"deepGroove\">Deep Groove Ball Bearing<\/option>\n <option value=\"angularContact\">Angular Contact Ball Bearing<\/option>\n <option value=\"taperedRoller\">Tapered Roller Bearing<\/option>\n <option value=\"sphericalRoller\">Spherical Roller Bearing<\/option>\n <\/select>\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-loadRating\">Basic Dynamic Load Rating <span class=\"bcalc-unit\">(C) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-loadRating\" min=\"0\" step=\"any\" value=\"45\" placeholder=\"e.g. 45\">\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-speed\">Rotational Speed <span class=\"bcalc-unit\">(n) [rpm]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-speed\" min=\"0\" step=\"any\" value=\"1500\" placeholder=\"e.g. 1500\">\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Operating Conditions<\/div>\n <div class=\"bcalc-form-grid\">\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-radialLoad\">Radial Load <span class=\"bcalc-unit\">(Fr) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-radialLoad\" min=\"0\" step=\"any\" value=\"10\" placeholder=\"e.g. 10\">\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-axialLoad\">Axial Load <span class=\"bcalc-unit\">(Fa) [kN]<\/span><\/label>\n <input type=\"number\" id=\"bcalc-axialLoad\" min=\"0\" step=\"any\" value=\"2\" placeholder=\"e.g. 2\">\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-input-section\">\n <div class=\"bcalc-section-title\">Load Factors (X & Y)<\/div>\n <div class=\"bcalc-toggle-row\">\n <input type=\"checkbox\" id=\"bcalc-manualFactors\">\n <label for=\"bcalc-manualFactors\">Manual override – enter X and Y values directly<\/label>\n <\/div>\n <div class=\"bcalc-form-grid\" style=\"margin-top:1rem\">\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-factorX\">Radial Factor <span class=\"bcalc-unit\">(X)<\/span><\/label>\n <input type=\"number\" id=\"bcalc-factorX\" min=\"0\" step=\"any\" value=\"1\" disabled>\n <div class=\"bcalc-factor-hint bcalc-auto\" id=\"bcalc-hintX\">Auto: X = 1.00 (Fa\/Fr <= e)<\/div>\n <\/div>\n <div class=\"bcalc-form-group\">\n <label for=\"bcalc-factorY\">Axial Factor <span class=\"bcalc-unit\">(Y)<\/span><\/label>\n <input type=\"number\" id=\"bcalc-factorY\" min=\"0\" step=\"any\" value=\"0\" disabled>\n <div class=\"bcalc-factor-hint bcalc-auto\" id=\"bcalc-hintY\">Auto: Y = 0.00 (Fa\/Fr <= e)<\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <button type=\"button\" class=\"bcalc-btn-calculate\" id=\"bcalc-btnCalculate\">Calculate<\/button>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-card bcalc-results-panel\" id=\"bcalc-resultsPanel\">\n <div class=\"bcalc-card-header\">Calculation Results<\/div>\n <div class=\"bcalc-card-body\">\n <div class=\"bcalc-result-grid\">\n <div class=\"bcalc-result-item bcalc-highlight\">\n <div class=\"bcalc-result-label\">Equivalent Dynamic Load (P)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resP\">– <span class=\"bcalc-result-unit\">kN<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Axial \/ Radial Ratio (Fa\/Fr)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resRatio\">–<\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Rating Life (L10)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resL10\">– <span class=\"bcalc-result-unit\">x10^6 rev<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Operating Life (L10h)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resL10h\">– <span class=\"bcalc-result-unit\">hours<\/span><\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Life Exponent (p)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resPexp\">–<\/div>\n <\/div>\n <div class=\"bcalc-result-item\">\n <div class=\"bcalc-result-label\">Boundary Ratio (e)<\/div>\n <div class=\"bcalc-result-value\" id=\"bcalc-resE\">–<\/div>\n <\/div>\n <\/div>\n\n <div class=\"bcalc-status-banner\" id=\"bcalc-statusBanner\">\n <span class=\"bcalc-status-icon\" id=\"bcalc-statusIcon\"><\/span>\n <span id=\"bcalc-statusText\"><\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <\/div>\n<\/div>\n\n<script type=\"text\/plain\" 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