{ "id": "ac-robstride-rs02", "name": "RobStride RS02 QDD Joint Actuator", "subcategory": "joint-actuators", "brand": "RobStride", "mpn": "RS02", "summary": "Integrated planetary quasi-direct-drive joint (motor, 7.75:1 planetary, driver, dual encoders) for legged and humanoid builders who want the low-cost Chinese QDD class.", "maker": { "name": "Beijing Lingzu Shidai Technology (RobStride, 北京灵足时代科技)", "country": "CN", "role": "brand" }, "made_in": "unknown", "specs": { "peak_torque_nm": { "label": "Peak torque", "value": "17 N·m", "num": 17, "unit": "N·m" }, "rated_torque_nm": { "label": "Rated torque", "value": "7 N·m (with specified heat-sink plate)", "num": 7, "unit": "N·m" }, "ratio": { "label": "Gear ratio", "value": "7.75:1 planetary", "num": 7.75 }, "voltage_v": { "label": "Voltage", "value": "48 V rated (24-60 V)", "num": 48, "unit": "V" }, "mass_g": { "label": "Mass", "value": "380 g", "num": 380, "unit": "g" }, "interface": { "label": "Interface", "value": "CAN (RobStride CAN/CANopen protocol docs)", "num": null } }, "price": [ { "qty": 1, "usd": 98.45, "kind": "list", "source": "https://github.com/RobStride/Product_Information/blob/main/README.md", "as_of": "2026-10-29", "note": "CNY 699 in RobStride catalog dated 2026-07-13; maker lists CNY; USD is a conversion at an assumed ~7.10 CNY/USD, not a USD quote" }, { "qty": 1, "usd": 195, "kind": "distributor", "source": "https://www.roboticscenter.ai/store/product/robstride-02", "as_of": "2026-10-29", "note": "Reseller listing; backorder, 4-6 weeks; est. $66.46 US shipping extra" } ], "moq": "unknown", "lead_time": "unknown", "hts": "unknown", "compliance": { "ndaa": "unknown", "blue_uas": "unknown", "fcc": "n/a", "notes": "Rated torque per RobStride spec dated 2026-07-13 assumes a specified aluminium heat-sink plate; free-standing continuous torque unknown. Interface: CAN per RobStride repo docs (CANopen doc linked); per-model interface not stated in the README." }, "links": { "product": "https://robstride.com/", "datasheet": "https://github.com/RobStride/Product_Information/blob/main/README.md", "cad": null }, "equivalents": [ "ac-cubemars-ak80-9-v3", "ac-unitree-go-m8010-6", "ac-cubemars-ak70-10", "ac-synapticon-actilink-jd-circulo-8", "ac-robstride-rs01", "ac-robstride-rs02-ip67" ], "pairs_with": [], "maglev": { "custom": "RobStride publishes customization scope on its About page (per Maglev research CN001); no Maglev contact or quote yet.", "directory_ref": null }, "sources": [ { "url": "https://github.com/RobStride/Product_Information/blob/main/README.md", "what": "specs + CNY catalog price (spec dated 2026-07-13)" } ], "confidence": "VERIFIED", "category": "actuators", "subcategory_title": "Integrated Joint Actuators", "icon": "joint", "image": { "url": "https://parts.trymaglev.com/img/ac-robstride-rs02.webp", "thumb": "https://parts.trymaglev.com/img/t/ac-robstride-rs02.webp", "source_image": "https://cdn.shopify.com/s/files/1/0621/0050/4774/files/TB-ROBSTRIDE02-1.jpg?v=1782184887", "source_page": "https://openelab.io/products/robstride02-qdd-17n-m-joint-motor-module-dual-encoders", "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-robstride-rs02/", "markdown": "https://parts.trymaglev.com/p/ac-robstride-rs02/index.md", "equivalents_detail": [ { "id": "ac-cubemars-ak80-9-v3", "name": "CubeMars AK80-9 V3.0 KV100 Robotic Actuator", "brand": "CubeMars", "mpn": "AK80-9 V3.0 KV100", "category": "actuators", "subcategory": "joint-actuators", "summary": "The reference 9:1 QDD joint used across many quadruped and humanoid research builds; 60 dB at 65 cm claimed.", "origin": "CN", "origin_basis": "hq", "price_usd": 479.9, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-cubemars-ak80-9-v3.webp", "url": "https://parts.trymaglev.com/p/ac-cubemars-ak80-9-v3/", "json": "https://parts.trymaglev.com/api/parts/ac-cubemars-ak80-9-v3.json" }, { "id": "ac-unitree-go-m8010-6", "name": "Unitree GO-M8010-6 Joint Motor", "brand": "Unitree", "mpn": "GO-M8010-6", "category": "actuators", "subcategory": "joint-actuators", "summary": "Unitree's Go1/Go2-class quadruped joint: 6.33:1 planetary QDD with RS-485 at 4 Mbps; cheap and widely used in student and research legged robots.", "origin": "CN", "origin_basis": "hq", "price_usd": 369, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-unitree-go-m8010-6.webp", "url": "https://parts.trymaglev.com/p/ac-unitree-go-m8010-6/", "json": "https://parts.trymaglev.com/api/parts/ac-unitree-go-m8010-6.json" }, { "id": "ac-cubemars-ak70-10", "name": "CubeMars AK70-10 KV100 Robotic Actuator", "brand": "CubeMars", "mpn": "AK70-10 KV100", "category": "actuators", "subcategory": "joint-actuators", "summary": "10:1 QDD joint for legged robots and exoskeletons; mid-size step between AK60 and AK80.", "origin": "CN", "origin_basis": "hq", "price_usd": 398.9, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-cubemars-ak70-10.webp", "url": "https://parts.trymaglev.com/p/ac-cubemars-ak70-10/", "json": "https://parts.trymaglev.com/api/parts/ac-cubemars-ak70-10.json" }, { "id": "ac-synapticon-actilink-jd-circulo-8", "name": "Synapticon ACTILINK-JD Circulo 8 Dynamic Actuator", "brand": "Synapticon", "mpn": "AJD-08-020-400-ECS1SS-N-00", "category": "actuators", "subcategory": "joint-actuators", "summary": "German EtherCAT joint actuator (7.75:1, 78.5 mm) with SOMANET Circulo 7 drive and STO/Safe Motion option, for humanoid and legged-robot builders needing functional safety.", "origin": "DE", "origin_basis": "hq", "price_usd": null, "price_qty": null, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-synapticon-actilink-jd-circulo-8.webp", "url": "https://parts.trymaglev.com/p/ac-synapticon-actilink-jd-circulo-8/", "json": "https://parts.trymaglev.com/api/parts/ac-synapticon-actilink-jd-circulo-8.json" }, { "id": "ac-robstride-rs01", "name": "RobStride RS01 QDD Joint Actuator", "brand": "RobStride", "mpn": "RS01", "category": "actuators", "subcategory": "joint-actuators", "summary": "Low-cost 17 N·m integrated QDD joint with a single magnetic encoder at 36 V, popular for small humanoids and quadrupeds.", "origin": "CN", "origin_basis": "hq", "price_usd": 130, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-robstride-rs01.webp", "url": "https://parts.trymaglev.com/p/ac-robstride-rs01/", "json": "https://parts.trymaglev.com/api/parts/ac-robstride-rs01.json" }, { "id": "ac-robstride-rs02-ip67", "name": "RobStride RS02-IP67 QDD Joint Actuator", "brand": "RobStride", "mpn": "RS02-IP67", "category": "actuators", "subcategory": "joint-actuators", "summary": "IP67-sealed version of the RS02 17 N·m QDD joint (dual encoders) for outdoor legged robots and wet environments.", "origin": "CN", "origin_basis": "hq", "price_usd": 240, "price_qty": 1, "ndaa": "unknown", "blue_uas": "unknown", "image": "https://parts.trymaglev.com/img/ac-robstride-rs02-ip67.webp", "url": "https://parts.trymaglev.com/p/ac-robstride-rs02-ip67/", "json": "https://parts.trymaglev.com/api/parts/ac-robstride-rs02-ip67.json" } ], "pairs_with_detail": [] }