{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "slamtec-rplidar-a1m8",
 "name": "SLAMTEC RPLIDAR A1M8 360° laser scanner: base outline, 4 mounting holes, scanning head and motor",
 "kind": "modern",
 "category": "Electronic components",
 "group": "Modules, sensors & displays",
 "year": null,
 "question": "What are the SLAMTEC RPLIDAR A1M8 dimensions and mounting-hole positions?",
 "tags": [
  "rplidar a1",
  "rplidar a1m8 dimensions",
  "2d lidar mounting holes",
  "slamtec lidar mount",
  "360 degree laser scanner",
  "robot lidar bracket"
 ],
 "aliases": [
  "RPLIDAR A1M8",
  "SLAMTEC RPLIDAR A1",
  "rplidar a1",
  "slamtec rplidar a1m8 a1 series 360-degree scanning lidar",
  "RPLIDAR A1 mounting hole pattern",
  "RPLIDAR A1 dimensions",
  "SLAMTEC A1 2D lidar"
 ],
 "overall_mm": {
  "length": 96.74,
  "width": 70.28,
  "height": 51
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/slamtec-rplidar-a1m8/",
 "sheet_txt": "https://xemstudio.com/objects/slamtec-rplidar-a1m8/sheet.txt",
 "sheet": {
  "basis": "SLAMTEC's official RPLIDAR A1M8 2D drawing, with the base outline, hole depths and under-plate parts taken from SLAMTEC's official 3D model.",
  "overall_mm": {
   "length": 96.74,
   "width": 70.28,
   "height": 51
  },
  "notes": [
   "Upright, lowest point (motor connector) at 0, top of the scanning head at 51.0. Base plate from 21.0 to 26.5 (5.5 thick); the rotating disc is Ø70.28 and the head Ø70.0.",
   "The head axis sits 35.14 from the head end of the 96.74 base; the Ø32 drive motor hangs below the plate, flush with the opposite end.",
   "Four Ø3.0 mounting holes through the base plate, each with a Ø5.0 × 2.0 counterbore at the plate top: 70.0 apart along the length, 56.0 apart across at the head end and 40.0 apart across at the motor end.",
   "Measured from the head axis, the head-end holes sit 28.0 toward the head end and the motor-end holes 42.0 toward the motor end.",
   "Modelled: base plate outline, holes, skirt and PCB under the plate (down to 15.0), motor and its connector, pulley, rotating disc and head. Not modelled: drive belt, plate ribs, head window and the loose cable.",
   "All dimensions are exact nominal millimetres, true size, with no tolerance added."
  ],
  "table": {
   "columns": [
    "hole",
    "x from head axis (mm)",
    "y (mm)",
    "diameter (mm)"
   ],
   "rows": [
    [
     "1",
     "-28.0",
     "+28.0",
     "3.0 (Ø5.0 cbore)"
    ],
    [
     "2",
     "-28.0",
     "-28.0",
     "3.0 (Ø5.0 cbore)"
    ],
    [
     "3",
     "+42.0",
     "+20.0",
     "3.0 (Ø5.0 cbore)"
    ],
    [
     "4",
     "+42.0",
     "-20.0",
     "3.0 (Ø5.0 cbore)"
    ]
   ]
  }
 },
 "sheet_text": "SLAMTEC RPLIDAR A1M8 360° laser scanner: base outline, 4 mounting holes, scanning head and motor — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/slamtec-rplidar-a1m8/  (sheet CC BY 4.0)\nBasis: SLAMTEC's official RPLIDAR A1M8 2D drawing, with the base outline, hole depths and under-plate parts taken from SLAMTEC's official 3D model.\nCatalog version: 2026-10-20\n\nOverall (mm): length 96.74, width 70.28, height 51.0\n- Upright, lowest point (motor connector) at 0, top of the scanning head at 51.0. Base plate from 21.0 to 26.5 (5.5 thick); the rotating disc is Ø70.28 and the head Ø70.0.\n- The head axis sits 35.14 from the head end of the 96.74 base; the Ø32 drive motor hangs below the plate, flush with the opposite end.\n- Four Ø3.0 mounting holes through the base plate, each with a Ø5.0 × 2.0 counterbore at the plate top: 70.0 apart along the length, 56.0 apart across at the head end and 40.0 apart across at the motor end.\n- Measured from the head axis, the head-end holes sit 28.0 toward the head end and the motor-end holes 42.0 toward the motor end.\n- Modelled: base plate outline, holes, skirt and PCB under the plate (down to 15.0), motor and its connector, pulley, rotating disc and head. Not modelled: drive belt, plate ribs, head window and the loose cable.\n- All dimensions are exact nominal millimetres, true size, with no tolerance added.\n\nhole  x from head axis (mm)  y (mm)  diameter (mm)\n1  -28.0  +28.0  3.0 (Ø5.0 cbore)\n2  -28.0  -28.0  3.0 (Ø5.0 cbore)\n3  +42.0  +20.0  3.0 (Ø5.0 cbore)\n4  +42.0  -20.0  3.0 (Ø5.0 cbore)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- SLAMTEC: RPLIDAR A-series support and downloads — web — Publisher's page; dimensions are facts — https://www.slamtec.com/en/Support#rplidar-a-series\n- SLAMTEC: RPLIDAR A1M8 R1 2D mechanical drawing (PDF) — web — Publisher's page; dimensions are facts — https://download-en.slamtec.com/api/download/rplidar-core-a1m8-r1-model-2d-pdf/2.0?lang=en\n- SLAMTEC: RPLIDAR A1M8 R1 3D model (IGES) — web — Publisher's page; dimensions are facts — https://download-en.slamtec.com/api/download/rplidar-core-a1m8-r1-model-3d-igs/2.0?lang=netural\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/slamtec-rplidar-a1m8/index.json\nAPI: https://xemstudio.com/api/geometry?object=slamtec-rplidar-a1m8\n",
 "sources": [
  {
   "publisher": "SLAMTEC",
   "title": "RPLIDAR A-series support and downloads",
   "url": "https://www.slamtec.com/en/Support#rplidar-a-series",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "SLAMTEC",
   "title": "RPLIDAR A1M8 R1 2D mechanical drawing (PDF)",
   "url": "https://download-en.slamtec.com/api/download/rplidar-core-a1m8-r1-model-2d-pdf/2.0?lang=en",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "SLAMTEC",
   "title": "RPLIDAR A1M8 R1 3D model (IGES)",
   "url": "https://download-en.slamtec.com/api/download/rplidar-core-a1m8-r1-model-3d-igs/2.0?lang=netural",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "threaded-standoffs-metric",
  "socket-head-cap-screws-metric",
  "hc-sr04-ultrasonic-sensor",
  "raspberry-pi-5",
  "jetson-orin-nano-devkit"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [
  {
   "feature": "Base mounting holes",
   "exact": "4 × Ø3.0, 70.0 × 56.0 / 40.0 trapezoid pattern",
   "mates": "screws into a mounting plate or standoffs",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "Head and disc clearance",
   "exact": "Ø70.28 disc from 25.5 to 31.5, Ø70.0 head to 51.0",
   "mates": "sensor tower or cover cut-out around the rotating head",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What is the RPLIDAR A1M8 mounting hole pattern?",
   "a": "Four Ø3.0 holes, 70.0 mm apart along the base, 56.0 mm apart across at the head end and 40.0 mm across at the motor end."
  },
  {
   "q": "How big is the RPLIDAR A1M8?",
   "a": "96.74 × 70.28 × 51.0 mm overall; the scanning head is Ø70.0 and its top is 51.0 mm above the lowest point."
  },
  {
   "q": "Where is the RPLIDAR A1 head axis?",
   "a": "35.14 mm from the head end of the base; the head-end holes are 28.0 mm and the motor-end holes 42.0 mm from it along the length."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "slamtec-rplidar-a1m8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/slamtec-rplidar-a1m8/slamtec-rplidar-a1m8.step",
   "stl": "https://xemstudio.com/files/hardware/slamtec-rplidar-a1m8/slamtec-rplidar-a1m8.stl",
   "note": "SLAMTEC RPLIDAR A1M8 360° laser scanner: base outline, 4 mounting holes, scanning head and motor"
  }
 ],
 "markdown": "https://xemstudio.com/objects/slamtec-rplidar-a1m8/index.md"
}