{
 "id": "ac-harmonicdrive-csf-17-100-2uh",
 "name": "Harmonic Drive CSF-17-100-2UH Strain-Wave Gear Unit",
 "subcategory": "strain-wave-reducers",
 "brand": "Harmonic Drive",
 "mpn": "CSF-17-100-2UH",
 "summary": "Size-17 100:1 zero-backlash strain-wave gear unit with integrated cross-roller output bearing; the incumbent reference that Chinese harmonic reducers are measured against.",
 "maker": {
  "name": "Harmonic Drive Systems (JP) / Harmonic Drive LLC (US)",
  "country": "JP",
  "role": "brand"
 },
 "made_in": "unknown",
 "specs": {
  "ratio": {
   "label": "Ratio",
   "value": "100:1",
   "num": 100
  },
  "rated_torque_nm": {
   "label": "Rated torque (L10)",
   "value": "24 N·m",
   "num": 24,
   "unit": "N·m"
  },
  "peak_torque_nm": {
   "label": "Repeated / momentary peak",
   "value": "54 / 108 N·m",
   "num": 54,
   "unit": "N·m"
  },
  "backlash_arcmin": {
   "label": "Backlash",
   "value": "zero backlash (standard accuracy 1.5 arcmin)",
   "num": 0,
   "unit": "arcmin"
  },
  "od_mm": {
   "label": "Outer diameter",
   "value": "unknown",
   "num": null
  },
  "mass_g": {
   "label": "Mass",
   "value": "680 g",
   "num": 680,
   "unit": "g"
  },
  "backlash_arcsec": {
   "label": "Backlash",
   "value": "0 arcsec (zero backlash (standard accuracy 1.5 arcmin))",
   "num": 0,
   "unit": "arcsec"
  },
  "hollow_shaft": {
   "label": "Hollow shaft",
   "value": "unknown"
  }
 },
 "price": [],
 "moq": "unknown",
 "lead_time": "unknown",
 "hts": "unknown",
 "compliance": {
  "ndaa": "unknown",
  "blue_uas": "unknown",
  "fcc": "n/a",
  "notes": "Price on request; the 'zero backlash' figure is a maker claim, not lost motion."
 },
 "links": {
  "product": "https://www.harmonicdrive.net/products/gear-units/gear-units/csf-2uh",
  "datasheet": "https://www.harmonicdrive.net/_hd/content/documents1/CSG-CSF_GearUnits.pdf",
  "cad": "https://www.harmonicdrive.net/downloads/stp-files/csf-2uh-gear-units"
 },
 "equivalents": [
  "ac-leaderdrive-lcs-17-100",
  "ac-leaderdrive-lcsg-17-100",
  "ac-laifual-fsg-17",
  "ac-spinea-ts70-75-tb",
  "ac-tcdrive-cs-17-100-c-c"
 ],
 "pairs_with": [
  "ac-rls-aksim-2",
  "ac-renishaw-resolute-ra32bba150b30f",
  "ac-harmonicdrive-sha20a-100"
 ],
 "maglev": {
  "custom": "",
  "directory_ref": null
 },
 "sources": [
  {
   "url": "https://www.harmonicdrive.net/products/gear-units/gear-units/csf-2uh",
   "what": "ordering-code table (rated/peak torque, accuracy, mass), CAD paths"
  }
 ],
 "confidence": "VERIFIED",
 "category": "actuators",
 "subcategory_title": "Strain-Wave (Harmonic) Reducers",
 "icon": "driver",
 "image": {
  "url": "https://parts.trymaglev.com/img/ac-harmonicdrive-csf-17-100-2uh.webp",
  "thumb": "https://parts.trymaglev.com/img/t/ac-harmonicdrive-csf-17-100-2uh.webp",
  "source_image": "https://www.harmonicdrive.net/_hd/Content/renderings/CSF-20-2UH/360.0.jpg",
  "source_page": "https://www.harmonicdrive.net/products/gear-units/gear-units/csf-2uh",
  "background": "removed (Apple Vision)",
  "as_of": "2026-10-29",
  "note": "Photo shows the CSF-20-2UH; same series, different size."
 },
 "origin": {
  "code": "JP",
  "basis": "hq"
 },
 "hts_resolved": {
  "code": "8483.40.50.10",
  "typical": true,
  "key": "harmonic-drives",
  "basis": "subcategory",
  "confidence": "medium",
  "note": "Strain-wave reducer = fixed-ratio speed changer when imported alone."
 },
 "us_duty_by_origin": {
  "as_of": "2026-10-29",
  "rates": [
   {
    "origin": "CN",
    "duty_pct": 40,
    "possible_pct": 0,
    "usmca": false
   },
   {
    "origin": "TW",
    "duty_pct": 10,
    "possible_pct": 0,
    "usmca": false
   },
   {
    "origin": "VN",
    "duty_pct": 15,
    "possible_pct": 0,
    "usmca": false
   },
   {
    "origin": "IN",
    "duty_pct": 12.5,
    "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": 12.5,
    "possible_pct": 0,
    "usmca": true
   },
   {
    "origin": "US",
    "duty_pct": 0,
    "possible_pct": 0,
    "usmca": false
   }
  ]
 },
 "url": "https://parts.trymaglev.com/p/ac-harmonicdrive-csf-17-100-2uh/",
 "markdown": "https://parts.trymaglev.com/p/ac-harmonicdrive-csf-17-100-2uh/index.md",
 "equivalents_detail": [
  {
   "id": "ac-leaderdrive-lcs-17-100",
   "name": "Leaderdrive LCS-17-100 Cup-Type Strain-Wave Reducer",
   "brand": "Leaderdrive",
   "mpn": "LCS-17-100",
   "category": "actuators",
   "subcategory": "strain-wave-reducers",
   "summary": "Size-17 100:1 cup-type harmonic reducer from China's largest strain-wave maker; dimensionally positioned against Harmonic Drive CSF/CSG.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-leaderdrive-lcs-17-100.webp",
   "url": "https://parts.trymaglev.com/p/ac-leaderdrive-lcs-17-100/",
   "json": "https://parts.trymaglev.com/api/parts/ac-leaderdrive-lcs-17-100.json"
  },
  {
   "id": "ac-leaderdrive-lcsg-17-100",
   "name": "Leaderdrive LCSG-17-100 Cup-Type Strain-Wave Reducer",
   "brand": "Leaderdrive",
   "mpn": "LCSG-17-100",
   "category": "actuators",
   "subcategory": "strain-wave-reducers",
   "summary": "High-torque (+~30%) version of the LCS-17-100 for humanoid joints that run out of gear torque before motor torque.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-leaderdrive-lcsg-17-100.webp",
   "url": "https://parts.trymaglev.com/p/ac-leaderdrive-lcsg-17-100/",
   "json": "https://parts.trymaglev.com/api/parts/ac-leaderdrive-lcsg-17-100.json"
  },
  {
   "id": "ac-laifual-fsg-17",
   "name": "Laifual FSG Strain-Wave Reducer, Size 17",
   "brand": "Laifual",
   "mpn": "FSG-17 (ratio to select; exact code unknown)",
   "category": "actuators",
   "subcategory": "strain-wave-reducers",
   "summary": "Second-source Chinese cup-type harmonic reducer (FSG high-torque family, sizes 14-50, ratios 50-160) behind Leaderdrive.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-laifual-fsg-17.webp",
   "url": "https://parts.trymaglev.com/p/ac-laifual-fsg-17/",
   "json": "https://parts.trymaglev.com/api/parts/ac-laifual-fsg-17.json"
  },
  {
   "id": "ac-spinea-ts70-75-tb",
   "name": "Spinea TwinSpin TS 70 Cycloidal Reduction Bearing (T series)",
   "brand": "Spinea",
   "mpn": "TS 70-75-TB-P11",
   "category": "actuators",
   "subcategory": "cycloidal-reducers",
   "summary": "Compact cycloidal-type 'reduction bearing' with integrated radial-axial bearing and <1.5 arcmin lost motion; a non-harmonic high-stiffness option for robot joints.",
   "origin": "SK",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-spinea-ts70-75-tb.webp",
   "url": "https://parts.trymaglev.com/p/ac-spinea-ts70-75-tb/",
   "json": "https://parts.trymaglev.com/api/parts/ac-spinea-ts70-75-tb.json"
  },
  {
   "id": "ac-tcdrive-cs-17-100-c-c",
   "name": "TC Drive CS-17-100-C-C Cup-Type Strain-Wave Reducer",
   "brand": "TC Drive",
   "mpn": "CS-17-100-C-C",
   "category": "actuators",
   "subcategory": "strain-wave-reducers",
   "summary": "Size-17 100:1 standard cup-type harmonic reducer from Shenzhen Tongchuan; CSF-17 class.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-tcdrive-cs-17-100-c-c.webp",
   "url": "https://parts.trymaglev.com/p/ac-tcdrive-cs-17-100-c-c/",
   "json": "https://parts.trymaglev.com/api/parts/ac-tcdrive-cs-17-100-c-c.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"
  },
  {
   "id": "ac-renishaw-resolute-ra32bba150b30f",
   "name": "Renishaw RESOLUTE Rotary Readhead, BiSS 32-bit, 150 mm Ring",
   "brand": "Renishaw",
   "mpn": "RA32BBA150B30F",
   "category": "actuators",
   "subcategory": "joint-encoders",
   "summary": "Absolute optical rotary readhead (30 µm pitch) for 150 mm rings; high-end option for precision robot joints and rotary stages.",
   "origin": "UK",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-renishaw-resolute-ra32bba150b30f.webp",
   "url": "https://parts.trymaglev.com/p/ac-renishaw-resolute-ra32bba150b30f/",
   "json": "https://parts.trymaglev.com/api/parts/ac-renishaw-resolute-ra32bba150b30f.json"
  },
  {
   "id": "ac-harmonicdrive-sha20a-100",
   "name": "Harmonic Drive SHA20A Hollow-Shaft Rotary Actuator (CG, 1:100)",
   "brand": "Harmonic Drive",
   "mpn": "SHA20A (CG type, ratio 100)",
   "category": "actuators",
   "subcategory": "joint-actuators",
   "summary": "Western benchmark hollow-shaft servo actuator (CSG strain-wave gear + motor + absolute encoder) for precision arms; AC servo paired with the HA-800 drive.",
   "origin": "JP",
   "origin_basis": "hq",
   "price_usd": null,
   "price_qty": null,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/ac-harmonicdrive-sha20a-100.webp",
   "url": "https://parts.trymaglev.com/p/ac-harmonicdrive-sha20a-100/",
   "json": "https://parts.trymaglev.com/api/parts/ac-harmonicdrive-sha20a-100.json"
  }
 ]
}