{"product_id":"u9m4ha","title":"U9M4HA","description":"\u003cp\u003eThe \u003cstrong\u003eKollmorgen U9M4HA\u003c\/strong\u003e brushless servo motor from the \u003cstrong\u003eServoDisc Pancake DC Motors\u003c\/strong\u003e series combines a compact, disc-shaped form factor with high torque density and precision motion control capabilities. Designed for industrial automation and direct-drive applications, the U9M4HA delivers a \u003cstrong\u003epeak torque of 395 N-cm\u003c\/strong\u003e while maintaining smooth, low-inertia operation. Its ironless disc armature minimizes inertia, enabling rapid response times and reduced vibration, making it ideal for applications where space efficiency and dynamic performance are critical. The motor seamlessly integrates with Kollmorgen's KXA Plus and EM19 series servo drives, supporting a range of feedback options and connectivity protocols for versatile system architectures. With a maximum recommended speed of \u003cstrong\u003e6000 RPM\u003c\/strong\u003e and a rated speed of \u003cstrong\u003e3000 RPM\u003c\/strong\u003e, the U9M4HA balances high-speed capability with reliable continuous operation.\u003c\/p\u003e\n\n\u003cp\u003eTechnical specifications of the U9M4HA underscore its robust electrical and mechanical design. It operates at a \u003cstrong\u003erated terminal voltage of 34.7 Volts\u003c\/strong\u003e and sustains a \u003cstrong\u003erated power output of 138 Watts\u003c\/strong\u003e, while drawing a \u003cstrong\u003erated continuous current of 6.8 Amps\u003c\/strong\u003e under full load. Continuous stall conditions see a \u003cstrong\u003econtinuous stall current of 5.3 Amps\u003c\/strong\u003e producing a \u003cstrong\u003econtinuous stall torque of 35 N-cm\u003c\/strong\u003e. Thermal performance is rated at \u003cstrong\u003e44 N-cm continuous torque at 25°C\u003c\/strong\u003e and \u003cstrong\u003e40 N-cm continuous torque at 40°C\u003c\/strong\u003e, ensuring reliable operation across ambient temperature ranges. The motor’s peak current capability of \u003cstrong\u003e56 Amps\u003c\/strong\u003e supports high torque demands, and its moment of inertia of \u003cstrong\u003e0.2 kg·m²\u003c\/strong\u003e and static friction torque of \u003cstrong\u003e2.8 N-cm\u003c\/strong\u003e deliver responsive control in precision tasks.\u003c\/p\u003e\n\n\u003cp\u003eOperational features emphasize performance under varied conditions and ease of control integration. The pancake form factor—with a length of \u003cstrong\u003e2.39 inches\u003c\/strong\u003e, a diameter of \u003cstrong\u003e4.37 inches\u003c\/strong\u003e, and a mass of \u003cstrong\u003e2.4 kilograms\u003c\/strong\u003e—minimizes footprint without compromising structural rigidity. The ironless armature design reduces cogging torque, enabling smooth starts and stops, while optional fail-safe brakes meet safety requirements in critical applications. Available in configurations with either internal or external tachometers and supporting optical encoder feedback, the U9M4HA provides high resolution positional accuracy. Maintenance and cooling needs are modest, as the motor’s efficient thermal characteristics limit heat buildup during continuous operation.\u003c\/p\u003e\n\n\u003cp\u003eSystem integration of the \u003cstrong\u003eU9M4HA\u003c\/strong\u003e is streamlined by compatibility with Kollmorgen's KXA Plus and EM19 servo drives and a broad selection of feedback devices. The motor’s direct-drive architecture eliminates the need for gearboxes, reducing system complexity and backlash. It is ideally suited for high-precision tasks in semiconductor handling, medical device assembly, and pick-and-place robotics where accurate, repeatable motion is critical. Qualified personnel should handle installation and commissioning, given the high voltage and current ratings of the system.\u003c\/p\u003e","brand":"Kollmorgen","offers":[{"title":"Refurbished","offer_id":51689314615597,"sku":null,"price":1649.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/7696\/9517\/files\/ServoDisc_Series__618eff65-dee5-4d95-aec4-19ee99fb1876.webp?v=1760642067","url":"https:\/\/servosupplier.com\/products\/u9m4ha","provider":"Servo Supplier","version":"1.0","type":"link"}