{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MR-J4-40A+HG-KR43J","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"MR-J4-40A~3HG-KR43J","canonicalUrl":"https://aoctrl.com/mitsubishi/MR-J4-40A~3HG-KR43J","factsUrl":"https://aoctrl.com/api/mcp/products/MR-J4-40A%2BHG-KR43J","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi MR-J4-_A Servo Amplifier + HG-KR43J AC Servo Motor, 0.4 kW, 3000 r/min, 2.8 A, 4.5 N·m max torque, with oil seal.","salesMarkdown":"## What this matched set delivers The MR-J4-40A+HG-KR43J is a factory-matched servo amplifier and motor combination from Mitsubishi's MR-J4 series. The amplifier (MR-J4-40A) drives the HG-KR43J motor, a low-inertia, small-capacity AC servo motor fitted with an oil seal for applications where lubricant ingress is a concern. The system is rated for 0.4 kW output at a rated speed of 3000 r/min, with a rated current of 2.8 A and a maximum current of 9.1 A for peak torque demands. Maximum torque reaches 4.5 N·m, making this set suitable for positioning and speed-control axes in packaging, material handling, and general automation. ## Control and interface specifics Control is via sine-wave PWM with current control — the standard method for smooth torque at low speeds and low audible noise. The amplifier carries a general-purpose interface (type A), which accepts pulse-train and analog speed/torque commands from a motion controller or PLC. This is the most common interface for standalone servo applications without a dedicated motion network.","metaTitle":"Mitsubishi MR-J4-40A+HG-KR43J Servo System, 0.4 kW, 3000 r/m","metaDescription":"Mitsubishi MR-J4-40A+HG-KR43J servo amplifier and motor combo. 0.4 kW rated output, 3000 r/min, 2.8 A rated current, 4.5 N·m max torque. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Drives"],"specifications":{"MR-J4":"Series","title":"MR-J4-40A+HG-KR43J","Series":"HG-KR (low inertia/small capacity)","Weight":"1.4 Kg","HG-KR43J":"AC Servo Motor","Oil seal":"J = With","MR-J4-40A":"MR-J4-_A Servo Amplifier","Product No":"MR-J4-40A+HG-KR43J","Rated speed":"3 = 3000 [r/min]","description":"MR-J4-_A Servo Amplifier + AC Servo Motor","Product Type":"MR-J4-_A Servo Amplifier + AC Servo Motor","Rated output":"4 = 0.4","Control method":"Sine-wave PWM control, current control method","Maximum current":"9.1","Shipping Weight":"5 Kg","lifecycle_stage":"current","Rated current [A]":"2.8","Estimated Lead Time":"Usually ships in 1-10 working days.","Maximum torque [N•m]":"4.5","General-purpose Interface":"A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,017.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5e6ef0ad0bf648cf00cc3883ad34cef.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key ratings for this servo system?","answer":"Rated output is 0.4 kW, rated speed is 3000 r/min, rated current is 2.8 A, maximum current is 9.1 A, and maximum torque is 4.5 N·m."},{"question":"Does the motor include an oil seal?","answer":"Yes, the HG-KR43J motor is specified with an oil seal (code J), which protects the motor bearings from lubricant ingress in gearbox or direct-drive applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/MR-J4-40A~3HG-KR43J","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/mitsubishi/MR-J4-40A~3HG-KR43J when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}