{"product_id":"mitsubishi-electric-hf-sp121-hf-sp-series-ac-servo-motor","title":"Mitsubishi Electric HF-SP121 HF-SP Series AC Servo Motor","description":"\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered for medium-inertia motion control systems, the Mitsubishi Electric HF-SP121 AC servo motor provides reliable torque regulation and precise positioning across demanding industrial applications. This brushless synchronous motor is designed to pair seamlessly with compatible MR-J3 series servo amplifiers, delivering a rated output of \u003cstrong\u003e1.2 kW\u003c\/strong\u003e at a rated speed of \u003cstrong\u003e1000 r\/min\u003c\/strong\u003e. Its robust physical construction makes it highly suited for material handling, gantry systems, and packaging machinery requiring stable speed control under variable load conditions.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.25rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium Inertia Design:\u003c\/strong\u003e Optimizes load-to-motor inertia matching, reducing mechanical resonance and tuning complexity in high-mass systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Feedback:\u003c\/strong\u003e Integrates a high-resolution encoder to ensure sub-millimeter positioning accuracy and smooth low-speed velocity profiles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial-Grade Thermal Dissipation:\u003c\/strong\u003e Optimized stator geometry and housing design facilitate efficient heat dissipation without auxiliary cooling fans.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental Resilience:\u003c\/strong\u003e Rated for operation in challenging industrial environments with strict dust and moisture protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.25rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Handling \u0026amp; Conveyors:\u003c\/strong\u003e Provides smooth acceleration and deceleration curves for heavy palletizing and transfer lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGantry \u0026amp; Cartesian Robots:\u003c\/strong\u003e Delivers the high torque-to-size ratio required for multi-axis positioning systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging \u0026amp; Labeling Systems:\u003c\/strong\u003e Ensures repeatable, high-speed indexing and tension control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMetalworking \u0026amp; Feeders:\u003c\/strong\u003e Drives press feeders and auxiliary axes with high torsional stiffness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eValue \/ Specification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eHF-SP121\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eMotor Series\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eHF-SP Series (Medium Inertia, Medium Capacity)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRated Output\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e1.2 kW\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRated Speed\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e1000 r\/min\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Ambient Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0 to 40 degC (non-freezing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStorage Ambient Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-15 to 70 degC (non-freezing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Ambient Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e80% RH maximum (non-condensing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStorage Ambient Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e90% RH maximum (non-condensing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInstallation Altitude\u003c\/td\u003e\n        \u003ctd style=\"padding: 1000m or less above sea level;\"\u003e1000m or less above sea level\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eVibration Resistance\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eX: 24.5 m\/s2, Y: 49 m\/s2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e12 kg (27 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e13 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eJapan\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe HF-SP121 is designed to be driven specifically by the Mitsubishi MR-J3-150A\/B or MR-J3-200A\/B servo amplifiers. When replacing legacy HC-SFS series motors, verify the shaft dimensions and mounting flange alignment, as the HF-SP series features a more compact frame size for equivalent power outputs. Ensure the amplifier firmware is updated to recognize the HF-SP motor parameters to avoid initialization faults during startup.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIn applications with high cyclic start-stop rates, monitor the motor's thermal rise. Because this motor relies on natural convection cooling, mounting it in dead-air zones or tightly enclosed mechanical brackets can lead to premature thermal tripping (Overload 1 or Overload 2 alarms on the MR-J3 drive). Ensure the mounting surface acts as an effective heat sink, with a minimum recommended aluminum plate size of 300mm x 300mm x 12mm.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways use original Mitsubishi double-shielded encoder cables to prevent electromagnetic interference (EMI) from corrupting the high-resolution feedback signals. Route the encoder cable at least 30 cm away from the main motor power cables and any high-voltage AC lines. Ensure the motor frame is grounded directly to the control panel's common ground star point using a low-impedance strap.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c;\"\u003eCRITICAL WARNING:\u003c\/strong\u003e Ensure all incoming AC power to the servo amplifier is completely disconnected and locked out before attempting installation, removal, or wiring of the HF-SP121 motor. Wait at least 15 minutes for the amplifier's internal bus capacitors to fully discharge. Verify zero voltage at the amplifier terminals before proceeding.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eMount the motor securely to a rigid, vibration-resistant machine frame using high-tensile mounting bolts. Torque the bolts to the manufacturer's specified limits to prevent loosening during high-acceleration cycles.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eAlign the motor shaft precisely with the driven load. Use a flexible coupling designed for servo applications to accommodate minor angular or parallel misalignments and protect the motor bearings from excessive radial and axial forces.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eConnect the power and encoder cables to their respective MS connectors on the motor body. Ensure the connectors are fully seated and locked to maintain the environmental seal. Do not apply excessive tension or sharp bends to the cables near the connectors.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102148485483,"sku":"HF-SP121","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/hf-sp121-2305ezzj103.png?v=1776137679","url":"https:\/\/www.plcprotech.com\/pt\/products\/mitsubishi-electric-hf-sp121-hf-sp-series-ac-servo-motor","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}