{
 "id": "ac-myactuator-rmd-x8-p20-120",
 "name": "MyActuator RMD-X8-P20-120 Planetary Actuator",
 "subcategory": "joint-actuators",
 "brand": "MyActuator",
 "mpn": "RMD-X8-P20-120-E",
 "summary": "MyActuator's 120 N·m flagship planetary joint for humanoid hips/knees; Maglev's first-wave benchmark SKU.",
 "maker": {
  "name": "Suzhou Micro Actuator Technology (MyActuator)",
  "country": "CN",
  "role": "brand"
 },
 "made_in": "unknown",
 "specs": {
  "peak_torque_nm": {
   "label": "Peak torque",
   "value": "120 N·m",
   "num": 120,
   "unit": "N·m"
  },
  "rated_torque_nm": {
   "label": "Rated torque",
   "value": "43 N·m",
   "num": 43,
   "unit": "N·m"
  },
  "ratio": {
   "label": "Gear ratio",
   "value": "19.612:1 planetary",
   "num": 19.612
  },
  "voltage_v": {
   "label": "Voltage",
   "value": "48 V input",
   "num": 48,
   "unit": "V"
  },
  "mass_g": {
   "label": "Mass",
   "value": "1400 g",
   "num": 1400,
   "unit": "g"
  },
  "interface": {
   "label": "Interface",
   "value": "CAN bus / EtherCAT (variant)",
   "num": null
  },
  "encoder": {
   "label": "Encoder",
   "value": "Dual absolute 17-bit input / 17-bit output",
   "num": null
  },
  "backlash": {
   "label": "Backlash",
   "value": "10 arcmin",
   "num": 10,
   "unit": "arcmin"
  }
 },
 "price": [
  {
   "qty": 1,
   "usd": 999,
   "kind": "list",
   "source": "https://myactuator.us/products/rmd-x-series/rmd-x8-p20-120",
   "as_of": "2026-10-29",
   "note": "Official MyActuator USA store (myactuator.us); store states in stock / ships in 2-3 days for X8 (not allocation-verified)."
  }
 ],
 "moq": "unknown",
 "lead_time": "unknown",
 "hts": "unknown",
 "compliance": {
  "ndaa": "unknown",
  "blue_uas": "unknown",
  "fcc": "n/a",
  "notes": ""
 },
 "links": {
  "product": "https://myactuator.us/products/rmd-x-series/rmd-x8-p20-120",
  "datasheet": "https://www.myactuator.com/downloads-xseries",
  "cad": null
 },
 "equivalents": [
  "ac-robstride-rs04",
  "ac-encos-ec-a8116-p1-18",
  "ac-cubemars-ak80-64",
  "ac-myactuator-rmd-x8-p20-150-e-03"
 ],
 "pairs_with": [
  "ac-rls-aksim-2"
 ],
 "maglev": {
  "custom": "Maglev research lists named MyActuator sales contacts and a request route for dyno reports and license/transfer scope (CN003, contacts.md); not contacted.",
  "directory_ref": null
 },
 "sources": [
  {
   "url": "https://myactuator.us/products/rmd-x-series/rmd-x8-p20-120",
   "what": "specs + USD price"
  }
 ],
 "confidence": "VERIFIED",
 "category": "actuators",
 "subcategory_title": "Integrated Joint Actuators",
 "icon": "gear",
 "image": {
  "url": "https://parts.trymaglev.com/img/ac-myactuator-rmd-x8-p20-120.webp",
  "thumb": "https://parts.trymaglev.com/img/t/ac-myactuator-rmd-x8-p20-120.webp",
  "source_image": "https://cdn.sanity.io/images/7rgy42zg/production/f5bdd425abf1655358b0f0861ceab084637b3ffb-1062x900.webp",
  "source_page": "https://myactuator.us/products/rmd-x-series/rmd-x8-p20-120",
  "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-myactuator-rmd-x8-p20-120/",
 "markdown": "https://parts.trymaglev.com/p/ac-myactuator-rmd-x8-p20-120/index.md",
 "equivalents_detail": [
  {
   "id": "ac-robstride-rs04",
   "name": "RobStride RS04 QDD Joint Actuator",
   "brand": "RobStride",
   "mpn": "RS04",
   "category": "actuators",
   "subcategory": "joint-actuators",
   "summary": "Highest-torque RobStride QDD joint (120 N·m peak) for humanoid hips and knees; rated 40 N·m only with a 345x345 mm aluminium plate (35 N·m with 220x200 mm).",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": 168.87,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-robstride-rs04.webp",
   "url": "https://parts.trymaglev.com/p/ac-robstride-rs04/",
   "json": "https://parts.trymaglev.com/api/parts/ac-robstride-rs04.json"
  },
  {
   "id": "ac-encos-ec-a8116-p1-18",
   "name": "ENCOS EC-A8116-P1-18 Planetary Joint",
   "brand": "ENCOS",
   "mpn": "EC-A8116-P1-18",
   "category": "actuators",
   "subcategory": "joint-actuators",
   "summary": "Nanjing-made 18:1 planetary joint with dual encoders and CAN; 130 N·m peak class for humanoid legs.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-encos-ec-a8116-p1-18.webp",
   "url": "https://parts.trymaglev.com/p/ac-encos-ec-a8116-p1-18/",
   "json": "https://parts.trymaglev.com/api/parts/ac-encos-ec-a8116-p1-18.json"
  },
  {
   "id": "ac-cubemars-ak80-64",
   "name": "CubeMars AK80-64 KV80 Robotic Actuator",
   "brand": "CubeMars",
   "mpn": "AK80-64 KV80",
   "category": "actuators",
   "subcategory": "joint-actuators",
   "summary": "High-ratio (64:1) planetary joint for arms and exoskeletons that need holding torque more than backdrivability.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": 889.9,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-cubemars-ak80-64.webp",
   "url": "https://parts.trymaglev.com/p/ac-cubemars-ak80-64/",
   "json": "https://parts.trymaglev.com/api/parts/ac-cubemars-ak80-64.json"
  },
  {
   "id": "ac-myactuator-rmd-x8-p20-150-e-03",
   "name": "MyActuator RMD-X8-P20-150-E-03 Planetary Actuator",
   "brand": "MyActuator",
   "mpn": "RMD-X8-P20-150-E-03",
   "category": "actuators",
   "subcategory": "joint-actuators",
   "summary": "High-torque 19.6:1 planetary actuator (X8-150, V4.1) with dual encoder for arm and humanoid joints needing 120 N·m peak.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": 1015,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-myactuator-rmd-x8-p20-150-e-03.webp",
   "url": "https://parts.trymaglev.com/p/ac-myactuator-rmd-x8-p20-150-e-03/",
   "json": "https://parts.trymaglev.com/api/parts/ac-myactuator-rmd-x8-p20-150-e-03.json"
  }
 ],
 "pairs_with_detail": [
  {
   "id": "ac-rls-aksim-2",
   "name": "RLS AksIM-2 Off-Axis Absolute Rotary Encoder",
   "brand": "RLS (Renishaw associate)",
   "mpn": "AksIM-2 (MBxxx readhead + MRAxxx ring; configured)",
   "category": "actuators",
   "subcategory": "joint-encoders",
   "summary": "Thin through-hole absolute magnetic ring encoder (ID 8-68 mm) widely used as the output-side encoder in robot joints and exoskeletons.",
   "origin": "SI",
   "origin_basis": "hq",
   "price_usd": 238.97,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-rls-aksim-2.webp",
   "url": "https://parts.trymaglev.com/p/ac-rls-aksim-2/",
   "json": "https://parts.trymaglev.com/api/parts/ac-rls-aksim-2.json"
  }
 ]
}