{"product_id":"qty-1-new-for-nsk-servo-motor-high-speed-bearing-epb40-179a","title":"NSK EPB40-179A High-Speed Servo Bearing","description":"\u003c!-- SEO Introduction --\u003e\n\u003csection class=\"koeed-container\"\u003e\n  \u003ch2 style=\"color: #0056b3;\"\u003eNSK EPB40-179A High-Speed Servo Motor Bearing\u003c\/h2\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eNSK EPB40-179A\u003c\/strong\u003e is a specialized high-precision ball bearing engineered specifically for \n    \u003cstrong\u003eservo motors and robotic drive units\u003c\/strong\u003e. Belonging to NSK's premium EPB series, this bearing \n    is optimized for high-frequency rotational stability and minimal thermal generation. It features advanced \n    sealing technology and high-speed grease formulation to ensure long-term maintenance-free operation in \n    precision automation environments.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKeywords:\u003c\/strong\u003e NSK EPB40-179A, Servo Motor Bearing, High-Speed Precision Bearing, Robotic Actuator Bearing, Low Friction Ball Bearing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003c!-- Technical Specifications --\u003e\n\u003csection class=\"koeed-specs\"\u003e\n  \u003ch3 style=\"color: #0056b3;\"\u003eTechnical Specifications\u003c\/h3\u003e\n  \u003cdiv style=\"overflow-x: auto;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left; font-size: 14px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background-color: #16c8c8; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eParameter\u003c\/th\u003e\n          \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eSpecification Detail\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee;\"\u003eEPB40-179A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eInner Diameter (d)\u003c\/td\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee;\"\u003e40 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee; font-weight: bold;\"\u003ePrecision Class\u003c\/td\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee;\"\u003eP5 \/ ABEC-5 (High Precision)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eSealing Type\u003c\/td\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee;\"\u003eNon-Contact Shielded \/ Low Torque Seal\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eLubrication\u003c\/td\u003e\n          \u003ctd style=\"padding: 10px; border: 1px solid #eeeeee;\"\u003eHigh-Speed Synthetic Grease\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- Application \u0026 Reliability --\u003e\n\u003csection class=\"koeed-application\" style=\"margin-top: 25px;\"\u003e\n  \u003ch3 style=\"color: #0056b3;\"\u003eIndustrial Application \u0026amp; Reliability\u003c\/h3\u003e\n  \u003cp\u003e\n    Designed for the \u003cstrong\u003ehigh acceleration and deceleration\u003c\/strong\u003e cycles of AC Servo Motors, the EPB40-179A \n    incorporates internal geometry that minimizes centrifugal force impacts on the rolling elements. This is \n    critical for \u003cstrong\u003eCNC machining centers, semiconductor pick-and-place machines\u003c\/strong\u003e, and high-speed \n    sorting conveyors where thermal expansion and vibration must be strictly controlled to maintain system \n    encoder accuracy.\n  \u003c\/p\u003e\n  \n\u003c\/section\u003e\n\n\u003c!-- Koeed B2B Tool: Fit \u0026 Clearance Estimator --\u003e\n\u003csection id=\"koeed-tool-section\" style=\"margin: 30px 0; padding: 25px; border: 2px solid #16c8c8; border-radius: 8px; background-color: #fff;\"\u003e\n  \u003ch3 style=\"text-align: center; color: #16c8c8; margin-top: 0;\"\u003eKoeed Interactive: Bearing Fit \u0026amp; Clearance Estimator\u003c\/h3\u003e\n  \u003cp style=\"font-size: 13px; text-align: center; color: #666;\"\u003eEvaluate shaft tolerance and thermal risk for 40mm servo bearings.\u003c\/p\u003e\n  \n  \u003cdiv style=\"display: flex; flex-direction: column; gap: 15px; max-width: 450px; margin: 0 auto;\"\u003e\n    \u003cdiv\u003e\n      \u003clabel for=\"koeed-shaft-tol\" style=\"display: block; margin-bottom: 5px; font-weight: bold;\"\u003eShaft Tolerance Fit (e.g., k5, m5, j6):\u003c\/label\u003e\n      \u003cselect id=\"koeed-shaft-tol\" style=\"width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 4px;\" aria-label=\"Select shaft tolerance\"\u003e\n        \u003coption value=\"j6\"\u003ej6 (Light Transition - Standard)\u003c\/option\u003e\n        \u003coption value=\"k5\" selected\u003ek5 (Interference - High Precision)\u003c\/option\u003e\n        \u003coption value=\"m5\"\u003em5 (Tight Interference - Heavy Load)\u003c\/option\u003e\n      \u003c\/select\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv\u003e\n      \u003clabel for=\"koeed-temp\" style=\"display: block; margin-bottom: 5px; font-weight: bold;\"\u003eExpected Operating Temp (°C):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-temp\" value=\"70\" style=\"width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 4px;\" aria-label=\"Operating temperature\"\u003e\n    \u003c\/div\u003e\n\n    \u003cbutton onclick=\"koeedAnalyzeFit()\" style=\"background-color: #16c8c8; color: white; border: none; padding: 14px; cursor: pointer; border-radius: 4px; font-weight: bold; font-size: 16px;\"\u003eAnalyze Installation Risk\u003c\/button\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv id=\"koeed-tool-result\" style=\"margin-top: 20px; padding: 15px; background: #f9f9f9; border-left: 4px solid #16c8c8; display: none;\"\u003e\u003c\/div\u003e\n\n  \u003cnoscript\u003e\n    \u003cp\u003eSafety Notice: For a 40mm high-speed bearing, ensure the shaft fit does not reduce the radial internal clearance to zero at peak operating temperatures. Standard k5\/j6 fits are typically recommended for servo motors.\u003c\/p\u003e\n  \u003c\/noscript\u003e\n\u003c\/section\u003e\n\n\u003c!-- Troubleshooting FAQ --\u003e\n\u003csection class=\"koeed-faq\"\u003e\n  \u003ch3 style=\"color: #0056b3;\"\u003eFAE Troubleshooting FAQ\u003c\/h3\u003e\n  \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n    \u003cp\u003e\u003cstrong\u003eQ1: The servo motor shows an 'Overcurrent' error after bearing replacement.\u003c\/strong\u003e\u003cbr\u003e\n    \u003cem\u003eA:\u003c\/em\u003e This is likely due to an \u003cstrong\u003eexcessive interference fit\u003c\/strong\u003e. If the shaft is oversized, it expands the inner ring, eliminating radial clearance and increasing friction torque. Verify the shaft diameter is within NSK's k5\/j6 specifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n    \u003cp\u003e\u003cstrong\u003eQ2: Why is the EPB series preferred over standard 62xx series for servos?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cem\u003eA:\u003c\/em\u003e Standard bearings often use general-purpose grease that thickens at low temperatures or thins excessively at high speeds. The EPB series uses \u003cstrong\u003elow-viscosity, high-stability synthetic grease\u003c\/strong\u003e to ensure consistent torque across the entire speed ramp of a servo motor.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n    \u003cp\u003e\u003cstrong\u003eQ3: How should I heat the bearing for installation?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cem\u003eA:\u003c\/em\u003e Use an \u003cstrong\u003eInduction Heater\u003c\/strong\u003e to reach 80°C–100°C. Never exceed 120°C as this will degrade the pre-packed grease and potentially alter the metallurgical properties of the high-carbon chromium steel.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- JavaScript Logic --\u003e\n\u003cscript\u003e\nfunction koeedAnalyzeFit() {\n  const tol = document.getElementById('koeed-shaft-tol').value;\n  const temp = parseFloat(document.getElementById('koeed-temp').value);\n  const resultDiv = document.getElementById('koeed-tool-result');\n  \n  resultDiv.style.display = 'block';\n  \n  let riskMsg = \"\";\n  let riskColor = \"\";\n\n  if (temp \u003e 95) {\n    riskMsg = \"Critical Warning: High operating temperature detected. Thermal expansion may lock the bearing if clearance is not C3 or higher.\";\n    riskColor = \"#dc3545\";\n  } else if (tol === 'm5') {\n    riskMsg = \"Caution: m5 fit provides heavy interference. Recommended only for high-vibration applications. Monitor for initial heat-up.\";\n    riskColor = \"#ffc107\";\n  } else {\n    riskMsg = \"Safe Profile: The selected fit and temperature range are optimal for high-speed servo stability.\";\n    riskColor = \"#28a745\";\n  }\n\n  resultDiv.innerHTML = `\n    \u003cdiv style=\"font-weight: bold; color: ${riskColor}; margin-bottom: 8px;\"\u003eAnalysis Result:\u003c\/div\u003e\n    \u003cdiv style=\"font-size: 14px; line-height: 1.5;\"\u003e\n      \u003cstrong\u003eRecommendation:\u003c\/strong\u003e ${riskMsg}\u003cbr\u003e\n      \u003cstrong\u003eBore Reference:\u003c\/strong\u003e 40mm H7\/k5 Fit.\u003cbr\u003e\n      \u003cstrong\u003eAction:\u003c\/strong\u003e Use an Induction Heater for installation to prevent scoring the shaft.\n    \u003c\/div\u003e\n  `;\n}\n\u003c\/script\u003e\n\n\u003c!-- Structured Data --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How to resolve servo motor overcurrent after bearing replacement?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Check for excessive interference fit between the shaft and the NSK EPB40-179A bearing inner ring. An oversized shaft can eliminate radial internal clearance, leading to high friction.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the proper installation temperature for NSK EPB bearings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The recommended heating temperature for induction installation is between 80°C and 100°C. Do not exceed 120°C to protect the lubricant.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"WebApplication\",\n  \"name\": \"Koeed Bearing Fit \u0026 Clearance Estimator\",\n  \"operatingSystem\": \"All\",\n  \"applicationCategory\": \"IndustrialEngineeringTool\",\n  \"description\": \"Estimates shaft tolerance compatibility and thermal expansion risks for NSK 40mm servo bearings.\"\n}\n\u003c\/script\u003e","brand":"NSK","offers":[{"title":"Default Title","offer_id":43800784535737,"sku":"285208569324","price":290.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_ab0e0719-85a9-481c-8246-ee703bd6a225.jpg?v=1711207707","url":"https:\/\/koeed.com\/da\/products\/qty-1-new-for-nsk-servo-motor-high-speed-bearing-epb40-179a","provider":"KOEED","version":"1.0","type":"link"}