{ "id": "ac-damiao-dm-j4310-2ec", "name": "Damiao DM-J4310-2EC Joint Motor", "subcategory": "joint-actuators", "brand": "Damiao", "mpn": "DM-J4310-2EC", "summary": "Low-cost 10:1 dual-encoder joint (~306 g) popular for small arms and LeRobot-style builds; MIT-mode CAN control.", "maker": { "name": "Shenzhen Damiao Technology (达妙科技)", "country": "CN", "role": "brand" }, "made_in": "unknown", "specs": { "peak_torque_nm": { "label": "Peak torque", "value": "7 N·m (V3); 12.5 N·m listed for V4", "num": 7, "unit": "N·m" }, "rated_torque_nm": { "label": "Rated torque", "value": "3 N·m (V3); 3.5 N·m (V4)", "num": 3, "unit": "N·m" }, "ratio": { "label": "Gear ratio", "value": "10:1", "num": 10 }, "voltage_v": { "label": "Voltage", "value": "24 V or 48 V versions", "num": 24, "unit": "V" }, "mass_g": { "label": "Mass", "value": "~306 g", "num": 306, "unit": "g" }, "interface": { "label": "Interface", "value": "CAN 1 Mbps (control) + UART 921600 (config)", "num": null }, "encoder": { "label": "Encoder", "value": "Dual magnetic, 14-bit (V3) / 16-bit (V4)", "num": null } }, "price": [ { "qty": 1, "usd": 139.99, "kind": "distributor", "source": "https://openelab.com/products/damiao-brushless-servo-dm-j4310", "as_of": "2026-10-29", "note": "OpenELAB sale price (regular $185.99) for SKU DM-J4310-2EC-24V-V3; OpenELAB is a listed official Damiao distributor" } ], "moq": "unknown", "lead_time": "unknown", "hts": "unknown", "compliance": { "ndaa": "unknown", "blue_uas": "unknown", "fcc": "n/a", "notes": "Seller page mixes V3 and V4 figures; confirm version before ordering." }, "links": { "product": "https://openelab.com/products/damiao-brushless-servo-dm-j4310", "datasheet": null, "cad": null }, "equivalents": [ "ac-robstride-rs00", "ac-cubemars-ak60-6-v3", "ac-myactuator-rmd-x2-p28-7" ], "pairs_with": [], "maglev": { "custom": "", "directory_ref": null }, "sources": [ { "url": "https://openelab.com/products/damiao-brushless-servo-dm-j4310", "what": "specs + price (distributor)" } ], "confidence": "REPORTED", "category": "actuators", "subcategory_title": "Integrated Joint Actuators", "icon": "joint", "image": { "url": "https://parts.trymaglev.com/img/ac-damiao-dm-j4310-2ec.webp", "thumb": "https://parts.trymaglev.com/img/t/ac-damiao-dm-j4310-2ec.webp", "source_image": "https://openelab.com/cdn/shop/files/1_54f315cc-0cea-432c-a7e7-5f17bca4ccf6.webp?v=1768359957&width=1920", "source_page": "https://openelab.com/products/damiao-brushless-servo-dm-j4310", "background": "removed (Apple Vision)", "as_of": "2026-10-29" }, "origin": { "code": "CN", "basis": "hq" }, "hts_resolved": { "code": "8501.31.40.00", "typical": true, "key": "integrated-joint-actuators", "basis": "subcategory", "confidence": "low", "note": "No modern ruling found for a motor+reducer+driver+encoder robot joint. Treat as unresolved." }, "us_duty_by_origin": { "as_of": "2026-10-29", "rates": [ { "origin": "CN", "duty_pct": 41.5, "possible_pct": 0, "usmca": false }, { "origin": "TW", "duty_pct": 10, "possible_pct": 0, "usmca": false }, { "origin": "VN", "duty_pct": 16.5, "possible_pct": 0, "usmca": false }, { "origin": "IN", "duty_pct": 14, "possible_pct": 0, "usmca": false }, { "origin": "JP", "duty_pct": 12.5, "possible_pct": 0, "usmca": false }, { "origin": "KR", "duty_pct": 12.5, "possible_pct": 0, "usmca": false }, { "origin": "DE", "duty_pct": 10, "possible_pct": 0, "usmca": false }, { "origin": "MX", "duty_pct": 14, "possible_pct": 0, "usmca": true }, { "origin": "US", "duty_pct": 0, "possible_pct": 0, "usmca": false } ] }, "url": "https://parts.trymaglev.com/p/ac-damiao-dm-j4310-2ec/", "markdown": "https://parts.trymaglev.com/p/ac-damiao-dm-j4310-2ec/index.md", "equivalents_detail": [ { "id": "ac-robstride-rs00", "name": "RobStride RS00 QDD Joint Actuator", "brand": "RobStride", "mpn": "RS00", "category": "actuators", "subcategory": "joint-actuators", "summary": "Integrated planetary quasi-direct-drive joint (motor, 10:1 planetary, driver, dual encoders) for legged and humanoid builders who want the low-cost Chinese QDD class.", "origin": "CN", "origin_basis": "hq", "price_usd": 84.23, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-robstride-rs00.webp", "url": "https://parts.trymaglev.com/p/ac-robstride-rs00/", "json": "https://parts.trymaglev.com/api/parts/ac-robstride-rs00.json" }, { "id": "ac-cubemars-ak60-6-v3", "name": "CubeMars AK60-6 V3.0 KV80 Robotic Actuator", "brand": "CubeMars", "mpn": "AK60-6 V3.0 KV80", "category": "actuators", "subcategory": "joint-actuators", "summary": "Small 6:1 QDD joint with integrated driver; a common pick for small legged robots, grippers and arm wrists.", "origin": "CN", "origin_basis": "hq", "price_usd": 229.9, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-cubemars-ak60-6-v3.webp", "url": "https://parts.trymaglev.com/p/ac-cubemars-ak60-6-v3/", "json": "https://parts.trymaglev.com/api/parts/ac-cubemars-ak60-6-v3.json" }, { "id": "ac-myactuator-rmd-x2-p28-7", "name": "MyActuator RMD-X2-P28-7 Planetary Actuator", "brand": "MyActuator", "mpn": "RMD-X2-P28-7", "category": "actuators", "subcategory": "joint-actuators", "summary": "Small high-ratio (28:1) integrated actuator for wrists, grippers and small arms.", "origin": "CN", "origin_basis": "hq", "price_usd": 299, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-myactuator-rmd-x2-p28-7.webp", "url": "https://parts.trymaglev.com/p/ac-myactuator-rmd-x2-p28-7/", "json": "https://parts.trymaglev.com/api/parts/ac-myactuator-rmd-x2-p28-7.json" } ], "pairs_with_detail": [] }