{
 "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": "self-aligning-ball-bearings-12xx-13xx-22xx-23xx",
 "name": "Self-aligning ball bearings 1204, 1205, 2205, 2305 and the 12xx, 13xx, 22xx, 23xx series: bore, OD, width, r min + 16 ring-envelope STEP/STL files",
 "kind": "standard",
 "category": "Hardware",
 "group": "Bearings, rails & motion",
 "year": null,
 "question": "What are the dimensions of a 1204, 1205, 2205 or 2305 self-aligning ball bearing: bore, outside diameter, width and chamfer?",
 "tags": [
  "self-aligning ball bearing",
  "1204",
  "1205",
  "1206",
  "2205",
  "2206",
  "2305",
  "1305",
  "double row ball bearing",
  "aligning ball bearing",
  "ring envelope"
 ],
 "aliases": [
  "1204 bearing dimensions",
  "1205 bearing dimensions",
  "1206 bearing dimensions",
  "1207 bearing dimensions",
  "1208 bearing dimensions",
  "2204 bearing dimensions",
  "2205 bearing dimensions",
  "2206 bearing dimensions",
  "2207 bearing dimensions",
  "2305 bearing dimensions",
  "1305 bearing dimensions",
  "1306 bearing dimensions",
  "1204 20x47x14",
  "1205 25x52x15",
  "2205 25x52x18",
  "2305 25x62x24",
  "self aligning ball bearing stl",
  "self aligning ball bearing step",
  "double row self aligning bearing",
  "12xx 13xx 22xx 23xx self aligning ball bearings",
  "1205 bearing size",
  "2205 bearing size",
  "misalignment bearing",
  "pillow block self aligning bearing"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 16,
 "url": "https://xemstudio.com/objects/self-aligning-ball-bearings-12xx-13xx-22xx-23xx/",
 "sheet_txt": "https://xemstudio.com/objects/self-aligning-ball-bearings-12xx-13xx-22xx-23xx/sheet.txt",
 "sheet": {
  "basis": "Koyo (JTEKT) self-aligning ball bearing supplement tables, checked on d, D, B against Emerson Bearing lists and between the 12xx / 22xx and 13xx / 23xx twins; McMaster-Carr linked for per-part CAD",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A self-aligning ball bearing has two rows of balls running in a spherical outer-ring raceway, so the shaft can tilt (about 2 to 3 degrees) against the housing without binding. It is the usual choice for long shafts, pillow blocks and fan or conveyor shafts that deflect or are not perfectly aligned. 12xx and 13xx are the narrow series; 22xx and 23xx are the wide series with the same bore and OD as 12xx and 13xx.",
   "Numbers: Koyo (JTEKT) self-aligning ball bearing supplement, cylindrical-bore tables (d, D, B, r min), 1200 and 1300 to 1322 plus 2200 and 2300 series. Emerson Bearing's lists are the independent check on d, D and B for 1200, 1201, 2200 to 2204 and 2301 to 2322 (all agree). Internal checks run by the generator: every 22xx row has the same d, D and r min as its 12xx twin and every 23xx row the same as its 13xx twin. 1300 does not appear in the Koyo table read.",
   "Files: 16 ring envelopes (1203 to 1210, 1305 to 1308, 2204 to 2208, 2305 to 2308): one solid ring with bore d, OD D, width B and corners rounded at r min. No balls, cage, spherical raceway or seals; ring faces are not stepped.",
   "Left out: tapered-bore (K) versions (1:12 taper, the bore diameter changes with position), the adapter sleeves, loads, speeds, mounting dimensions da, Da and ra, 126, 127 and 129 (Emerson lists them but Koyo's table starts at 1200), sizes above 110 mm bore, extended-inner-ring types (11xx, 112xx), sealed (2RS) versions."
  ],
  "table": {
   "columns": [
    "bearing",
    "bore d, mm",
    "OD D, mm",
    "width B, mm",
    "r min, mm",
    "source"
   ],
   "rows": [
    [
     "1200",
     "10",
     "30",
     "9",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "1201",
     "12",
     "32",
     "10",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "1202",
     "15",
     "35",
     "11",
     "0.6",
     "Koyo"
    ],
    [
     "1203",
     "17",
     "40",
     "12",
     "0.6",
     "Koyo"
    ],
    [
     "1204",
     "20",
     "47",
     "14",
     "1",
     "Koyo"
    ],
    [
     "1205",
     "25",
     "52",
     "15",
     "1",
     "Koyo"
    ],
    [
     "1206",
     "30",
     "62",
     "16",
     "1",
     "Koyo"
    ],
    [
     "1207",
     "35",
     "72",
     "17",
     "1.1",
     "Koyo"
    ],
    [
     "1208",
     "40",
     "80",
     "18",
     "1.1",
     "Koyo"
    ],
    [
     "1209",
     "45",
     "85",
     "19",
     "1.1",
     "Koyo"
    ],
    [
     "1210",
     "50",
     "90",
     "20",
     "1.1",
     "Koyo"
    ],
    [
     "1211",
     "55",
     "100",
     "21",
     "1.5",
     "Koyo"
    ],
    [
     "1212",
     "60",
     "110",
     "22",
     "1.5",
     "Koyo"
    ],
    [
     "1213",
     "65",
     "120",
     "23",
     "1.5",
     "Koyo"
    ],
    [
     "1214",
     "70",
     "125",
     "24",
     "1.5",
     "Koyo"
    ],
    [
     "1215",
     "75",
     "130",
     "25",
     "1.5",
     "Koyo"
    ],
    [
     "1216",
     "80",
     "140",
     "26",
     "2",
     "Koyo"
    ],
    [
     "1217",
     "85",
     "150",
     "28",
     "2",
     "Koyo"
    ],
    [
     "1218",
     "90",
     "160",
     "30",
     "2",
     "Koyo"
    ],
    [
     "1219",
     "95",
     "170",
     "32",
     "2.1",
     "Koyo"
    ],
    [
     "1220",
     "100",
     "180",
     "34",
     "2.1",
     "Koyo"
    ],
    [
     "1221",
     "105",
     "190",
     "36",
     "2.1",
     "Koyo"
    ],
    [
     "1222",
     "110",
     "200",
     "38",
     "2.1",
     "Koyo"
    ],
    [
     "1301",
     "12",
     "37",
     "12",
     "1",
     "Koyo"
    ],
    [
     "1302",
     "15",
     "42",
     "13",
     "1",
     "Koyo"
    ],
    [
     "1303",
     "17",
     "47",
     "14",
     "1",
     "Koyo"
    ],
    [
     "1304",
     "20",
     "52",
     "15",
     "1.1",
     "Koyo"
    ],
    [
     "1305",
     "25",
     "62",
     "17",
     "1.1",
     "Koyo"
    ],
    [
     "1306",
     "30",
     "72",
     "19",
     "1.1",
     "Koyo"
    ],
    [
     "1307",
     "35",
     "80",
     "21",
     "1.5",
     "Koyo"
    ],
    [
     "1308",
     "40",
     "90",
     "23",
     "1.5",
     "Koyo"
    ],
    [
     "1309",
     "45",
     "100",
     "25",
     "1.5",
     "Koyo"
    ],
    [
     "1310",
     "50",
     "110",
     "27",
     "2",
     "Koyo"
    ],
    [
     "1311",
     "55",
     "120",
     "29",
     "2",
     "Koyo"
    ],
    [
     "1312",
     "60",
     "130",
     "31",
     "2.1",
     "Koyo"
    ],
    [
     "1313",
     "65",
     "140",
     "33",
     "2.1",
     "Koyo"
    ],
    [
     "1314",
     "70",
     "150",
     "35",
     "2.1",
     "Koyo"
    ],
    [
     "1315",
     "75",
     "160",
     "37",
     "2.1",
     "Koyo"
    ],
    [
     "1316",
     "80",
     "170",
     "39",
     "2.1",
     "Koyo"
    ],
    [
     "1317",
     "85",
     "180",
     "41",
     "3",
     "Koyo"
    ],
    [
     "1318",
     "90",
     "190",
     "43",
     "3",
     "Koyo"
    ],
    [
     "1319",
     "95",
     "200",
     "45",
     "3",
     "Koyo"
    ],
    [
     "1320",
     "100",
     "215",
     "47",
     "3",
     "Koyo"
    ],
    [
     "1321",
     "105",
     "225",
     "49",
     "3",
     "Koyo"
    ],
    [
     "1322",
     "110",
     "240",
     "50",
     "3",
     "Koyo"
    ],
    [
     "2200",
     "10",
     "30",
     "14",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "2201",
     "12",
     "32",
     "14",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "2202",
     "15",
     "35",
     "14",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "2203",
     "17",
     "40",
     "16",
     "0.6",
     "Koyo + Emerson"
    ],
    [
     "2204",
     "20",
     "47",
     "18",
     "1",
     "Koyo + Emerson"
    ],
    [
     "2205",
     "25",
     "52",
     "18",
     "1",
     "Koyo"
    ],
    [
     "2206",
     "30",
     "62",
     "20",
     "1",
     "Koyo"
    ],
    [
     "2207",
     "35",
     "72",
     "23",
     "1.1",
     "Koyo"
    ],
    [
     "2208",
     "40",
     "80",
     "23",
     "1.1",
     "Koyo"
    ],
    [
     "2209",
     "45",
     "85",
     "23",
     "1.1",
     "Koyo"
    ],
    [
     "2210",
     "50",
     "90",
     "23",
     "1.1",
     "Koyo"
    ],
    [
     "2211",
     "55",
     "100",
     "25",
     "1.5",
     "Koyo"
    ],
    [
     "2212",
     "60",
     "110",
     "28",
     "1.5",
     "Koyo"
    ],
    [
     "2213",
     "65",
     "120",
     "31",
     "1.5",
     "Koyo"
    ],
    [
     "2214",
     "70",
     "125",
     "31",
     "1.5",
     "Koyo"
    ],
    [
     "2215",
     "75",
     "130",
     "31",
     "1.5",
     "Koyo"
    ],
    [
     "2216",
     "80",
     "140",
     "33",
     "2",
     "Koyo"
    ],
    [
     "2217",
     "85",
     "150",
     "36",
     "2",
     "Koyo"
    ],
    [
     "2218",
     "90",
     "160",
     "40",
     "2",
     "Koyo"
    ],
    [
     "2219",
     "95",
     "170",
     "43",
     "2.1",
     "Koyo"
    ],
    [
     "2220",
     "100",
     "180",
     "46",
     "2.1",
     "Koyo"
    ],
    [
     "2221",
     "105",
     "190",
     "50",
     "2.1",
     "Koyo"
    ],
    [
     "2222",
     "110",
     "200",
     "53",
     "2.1",
     "Koyo"
    ],
    [
     "2300",
     "10",
     "35",
     "17",
     "0.6",
     "Koyo"
    ],
    [
     "2301",
     "12",
     "37",
     "17",
     "1",
     "Koyo + Emerson"
    ],
    [
     "2302",
     "15",
     "42",
     "17",
     "1",
     "Koyo + Emerson"
    ],
    [
     "2303",
     "17",
     "47",
     "19",
     "1",
     "Koyo + Emerson"
    ],
    [
     "2304",
     "20",
     "52",
     "21",
     "1.1",
     "Koyo + Emerson"
    ],
    [
     "2305",
     "25",
     "62",
     "24",
     "1.1",
     "Koyo + Emerson"
    ],
    [
     "2306",
     "30",
     "72",
     "27",
     "1.1",
     "Koyo + Emerson"
    ],
    [
     "2307",
     "35",
     "80",
     "31",
     "1.5",
     "Koyo + Emerson"
    ],
    [
     "2308",
     "40",
     "90",
     "33",
     "1.5",
     "Koyo + Emerson"
    ],
    [
     "2309",
     "45",
     "100",
     "36",
     "1.5",
     "Koyo + Emerson"
    ],
    [
     "2310",
     "50",
     "110",
     "40",
     "2",
     "Koyo + Emerson"
    ],
    [
     "2311",
     "55",
     "120",
     "43",
     "2",
     "Koyo + Emerson"
    ],
    [
     "2312",
     "60",
     "130",
     "46",
     "2.1",
     "Koyo + Emerson"
    ],
    [
     "2313",
     "65",
     "140",
     "48",
     "2.1",
     "Koyo + Emerson"
    ],
    [
     "2314",
     "70",
     "150",
     "51",
     "2.1",
     "Koyo + Emerson"
    ],
    [
     "2315",
     "75",
     "160",
     "55",
     "2.1",
     "Koyo + Emerson"
    ],
    [
     "2316",
     "80",
     "170",
     "58",
     "2.1",
     "Koyo + Emerson"
    ],
    [
     "2317",
     "85",
     "180",
     "60",
     "3",
     "Koyo + Emerson"
    ],
    [
     "2318",
     "90",
     "190",
     "64",
     "3",
     "Koyo + Emerson"
    ],
    [
     "2319",
     "95",
     "200",
     "67",
     "3",
     "Koyo + Emerson"
    ],
    [
     "2320",
     "100",
     "215",
     "73",
     "3",
     "Koyo + Emerson"
    ],
    [
     "2321",
     "105",
     "225",
     "77",
     "3",
     "Koyo"
    ],
    [
     "2322",
     "110",
     "240",
     "80",
     "3",
     "Koyo + Emerson"
    ]
   ]
  }
 },
 "sheet_text": "Self-aligning ball bearings 1204, 1205, 2205, 2305 and the 12xx, 13xx, 22xx, 23xx series: bore, OD, width, r min + 16 ring-envelope STEP/STL files — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/self-aligning-ball-bearings-12xx-13xx-22xx-23xx/  (sheet CC BY 4.0)\nBasis: Koyo (JTEKT) self-aligning ball bearing supplement tables, checked on d, D, B against Emerson Bearing lists and between the 12xx / 22xx and 13xx / 23xx twins; McMaster-Carr linked for per-part CAD\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A self-aligning ball bearing has two rows of balls running in a spherical outer-ring raceway, so the shaft can tilt (about 2 to 3 degrees) against the housing without binding. It is the usual choice for long shafts, pillow blocks and fan or conveyor shafts that deflect or are not perfectly aligned. 12xx and 13xx are the narrow series; 22xx and 23xx are the wide series with the same bore and OD as 12xx and 13xx.\n- Numbers: Koyo (JTEKT) self-aligning ball bearing supplement, cylindrical-bore tables (d, D, B, r min), 1200 and 1300 to 1322 plus 2200 and 2300 series. Emerson Bearing's lists are the independent check on d, D and B for 1200, 1201, 2200 to 2204 and 2301 to 2322 (all agree). Internal checks run by the generator: every 22xx row has the same d, D and r min as its 12xx twin and every 23xx row the same as its 13xx twin. 1300 does not appear in the Koyo table read.\n- Files: 16 ring envelopes (1203 to 1210, 1305 to 1308, 2204 to 2208, 2305 to 2308): one solid ring with bore d, OD D, width B and corners rounded at r min. No balls, cage, spherical raceway or seals; ring faces are not stepped.\n- Left out: tapered-bore (K) versions (1:12 taper, the bore diameter changes with position), the adapter sleeves, loads, speeds, mounting dimensions da, Da and ra, 126, 127 and 129 (Emerson lists them but Koyo's table starts at 1200), sizes above 110 mm bore, extended-inner-ring types (11xx, 112xx), sealed (2RS) versions.\n\nbearing  bore d, mm  OD D, mm  width B, mm  r min, mm  source\n1200  10  30  9  0.6  Koyo + Emerson\n1201  12  32  10  0.6  Koyo + Emerson\n1202  15  35  11  0.6  Koyo\n1203  17  40  12  0.6  Koyo\n1204  20  47  14  1  Koyo\n1205  25  52  15  1  Koyo\n1206  30  62  16  1  Koyo\n1207  35  72  17  1.1  Koyo\n1208  40  80  18  1.1  Koyo\n1209  45  85  19  1.1  Koyo\n1210  50  90  20  1.1  Koyo\n1211  55  100  21  1.5  Koyo\n1212  60  110  22  1.5  Koyo\n1213  65  120  23  1.5  Koyo\n1214  70  125  24  1.5  Koyo\n1215  75  130  25  1.5  Koyo\n1216  80  140  26  2  Koyo\n1217  85  150  28  2  Koyo\n1218  90  160  30  2  Koyo\n1219  95  170  32  2.1  Koyo\n1220  100  180  34  2.1  Koyo\n1221  105  190  36  2.1  Koyo\n1222  110  200  38  2.1  Koyo\n1301  12  37  12  1  Koyo\n1302  15  42  13  1  Koyo\n1303  17  47  14  1  Koyo\n1304  20  52  15  1.1  Koyo\n1305  25  62  17  1.1  Koyo\n1306  30  72  19  1.1  Koyo\n1307  35  80  21  1.5  Koyo\n1308  40  90  23  1.5  Koyo\n1309  45  100  25  1.5  Koyo\n1310  50  110  27  2  Koyo\n1311  55  120  29  2  Koyo\n1312  60  130  31  2.1  Koyo\n1313  65  140  33  2.1  Koyo\n1314  70  150  35  2.1  Koyo\n1315  75  160  37  2.1  Koyo\n1316  80  170  39  2.1  Koyo\n1317  85  180  41  3  Koyo\n1318  90  190  43  3  Koyo\n1319  95  200  45  3  Koyo\n1320  100  215  47  3  Koyo\n1321  105  225  49  3  Koyo\n1322  110  240  50  3  Koyo\n2200  10  30  14  0.6  Koyo + Emerson\n2201  12  32  14  0.6  Koyo + Emerson\n2202  15  35  14  0.6  Koyo + Emerson\n2203  17  40  16  0.6  Koyo + Emerson\n2204  20  47  18  1  Koyo + Emerson\n2205  25  52  18  1  Koyo\n2206  30  62  20  1  Koyo\n2207  35  72  23  1.1  Koyo\n2208  40  80  23  1.1  Koyo\n2209  45  85  23  1.1  Koyo\n2210  50  90  23  1.1  Koyo\n2211  55  100  25  1.5  Koyo\n2212  60  110  28  1.5  Koyo\n2213  65  120  31  1.5  Koyo\n2214  70  125  31  1.5  Koyo\n2215  75  130  31  1.5  Koyo\n2216  80  140  33  2  Koyo\n2217  85  150  36  2  Koyo\n2218  90  160  40  2  Koyo\n2219  95  170  43  2.1  Koyo\n2220  100  180  46  2.1  Koyo\n2221  105  190  50  2.1  Koyo\n2222  110  200  53  2.1  Koyo\n2300  10  35  17  0.6  Koyo\n2301  12  37  17  1  Koyo + Emerson\n2302  15  42  17  1  Koyo + Emerson\n2303  17  47  19  1  Koyo + Emerson\n2304  20  52  21  1.1  Koyo + Emerson\n2305  25  62  24  1.1  Koyo + Emerson\n2306  30  72  27  1.1  Koyo + Emerson\n2307  35  80  31  1.5  Koyo + Emerson\n2308  40  90  33  1.5  Koyo + Emerson\n2309  45  100  36  1.5  Koyo + Emerson\n2310  50  110  40  2  Koyo + Emerson\n2311  55  120  43  2  Koyo + Emerson\n2312  60  130  46  2.1  Koyo + Emerson\n2313  65  140  48  2.1  Koyo + Emerson\n2314  70  150  51  2.1  Koyo + Emerson\n2315  75  160  55  2.1  Koyo + Emerson\n2316  80  170  58  2.1  Koyo + Emerson\n2317  85  180  60  3  Koyo + Emerson\n2318  90  190  64  3  Koyo + Emerson\n2319  95  200  67  3  Koyo + Emerson\n2320  100  215  73  3  Koyo + Emerson\n2321  105  225  77  3  Koyo\n2322  110  240  80  3  Koyo + Emerson\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Koyo (JTEKT), via SDT FL Bearing: Self-aligning ball bearing supplement: cylindrical-bore tables 1200, 1300, 2200, 2300 series (d, D, B, r min) — web — Publisher's page; dimensions are facts — https://www.sdtflbearing.com/wp-content/uploads/2025/06/Koyo-Ball-Roller-Bearings-Self-Aligning-Ball-Bearing-Supplement.pdf\n- Emerson Bearing: 1200 self-aligning ball bearings: d, D, B — web — Publisher's page; dimensions are facts — https://products.emersonbearing.com/compare/standard-angular-contact-ball-bearings/lf-aligning-standard-angular-contact-ball-bearings\n- Emerson Bearing: 2200 self-aligning ball bearings: d, D, B — web — Publisher's page; dimensions are facts — https://products.emersonbearing.com/compare/standard-angular-contact-ball-bearings/lf-aligning-standard-angular-contact-ball-bearin-3\n- Emerson Bearing: 2300 self-aligning ball bearings: d, D, B, loads, tapered-bore numbers — web — Publisher's page; dimensions are facts — https://products.emersonbearing.com/printitems/standard-angular-contact-ball-bearings/2300-self-aligning-ball-bearings?plpver=10\n- McMaster-Carr: Standard ball and roller bearings (self-aligning ball bearings are listed under ball bearings) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/standard-ball-and-roller-bearings\n- NTN: Rolling bearing catalogue, chapter 7 Bearing fits: Table 7.2 (1) shaft tolerance classes and Table 7.2 (3) housing bore tolerance classes for radial bearings — web — Publisher's page; dimensions are facts — https://www.ntnglobal.com/en/products/catalog/pdf/2203E_a07.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 16 parts): https://xemstudio.com/files/hardware/self-aligning-ball-bearings-12xx-13xx-22xx-23xx/index.json\nAPI: https://xemstudio.com/api/geometry?object=self-aligning-ball-bearings-12xx-13xx-22xx-23xx\n",
 "sources": [
  {
   "publisher": "Koyo (JTEKT), via SDT FL Bearing",
   "title": "Self-aligning ball bearing supplement: cylindrical-bore tables 1200, 1300, 2200, 2300 series (d, D, B, r min)",
   "url": "https://www.sdtflbearing.com/wp-content/uploads/2025/06/Koyo-Ball-Roller-Bearings-Self-Aligning-Ball-Bearing-Supplement.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Emerson Bearing",
   "title": "1200 self-aligning ball bearings: d, D, B",
   "url": "https://products.emersonbearing.com/compare/standard-angular-contact-ball-bearings/lf-aligning-standard-angular-contact-ball-bearings",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Emerson Bearing",
   "title": "2200 self-aligning ball bearings: d, D, B",
   "url": "https://products.emersonbearing.com/compare/standard-angular-contact-ball-bearings/lf-aligning-standard-angular-contact-ball-bearin-3",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
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  {
   "publisher": "Emerson Bearing",
   "title": "2300 self-aligning ball bearings: d, D, B, loads, tapered-bore numbers",
   "url": "https://products.emersonbearing.com/printitems/standard-angular-contact-ball-bearings/2300-self-aligning-ball-bearings?plpver=10",
   "formats": [
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   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Standard ball and roller bearings (self-aligning ball bearings are listed under ball bearings) (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/standard-ball-and-roller-bearings",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "NTN",
   "title": "Rolling bearing catalogue, chapter 7 Bearing fits: Table 7.2 (1) shaft tolerance classes and Table 7.2 (3) housing bore tolerance classes for radial bearings",
   "url": "https://www.ntnglobal.com/en/products/catalog/pdf/2203E_a07.pdf",
   "formats": [
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   "license": "Publisher's page; dimensions are facts",
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   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
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  "tolerance_mm": null
 },
 "related": [
  "deep-groove-ball-bearings-series",
  "ball-bearings-metric",
  "angular-contact-ball-bearings-72xx-73xx-b",
  "spherical-roller-bearings-222xx-223xx",
  "cylindrical-roller-bearings-nu2xx-nu3xx",
  "pillow-block-units-ucp-ucf-ucfl",
  "thrust-ball-bearings-51200-51300-series"
 ],
 "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": "bore d (cylindrical bore)",
   "exact": "Ø10 to Ø110: 1203 to 1210, 1305 to 1308, 2204 to 2208 and 2305 to 2308 files",
   "mates": "solid steel shaft; rotating inner ring under normal load: js5 / k5 / m5 / m6 / n6 depending on load and shaft size, ball bearings (NTN Table 7.2 (1))",
   "fit": "press",
   "files": "1"
  },
  {
   "feature": "bore d, stationary inner ring",
   "exact": "same Ø d",
   "mates": "shaft class g6 or h6 (g5 / h5 for more accuracy): NTN Table 7.2 (1)",
   "fit": "slide",
   "files": "1"
  },
  {
   "feature": "OD D, stationary outer ring",
   "exact": "Ø40 to Ø100 per size",
   "mates": "cast iron or steel housing bore H7 (G7 for large bearings or big temperature difference): NTN Table 7.2 (3)",
   "fit": "slide",
   "files": "1"
  },
  {
   "feature": "bore d (22xx and 23xx files)",
   "exact": "Ø20 to Ø40",
   "mates": "same shaft classes as above (NTN Table 7.2 (1))",
   "fit": "press",
   "files": "2"
  },
  {
   "feature": "OD D (22xx and 23xx files)",
   "exact": "Ø47 to Ø90",
   "mates": "housing bore H7 stationary outer ring; K7 / M7 for indeterminate load (NTN Table 7.2 (3))",
   "fit": "slide",
   "files": "2"
  }
 ],
 "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 are the dimensions of a 1205 self-aligning ball bearing?",
   "a": "Bore 25, OD 52, width 15 mm; r min 1 mm (Koyo)."
  },
  {
   "q": "What are the dimensions of a 2205 bearing?",
   "a": "Bore 25, OD 52, width 18 mm, r min 1 mm: the 22xx series is wider than 12xx with the same bore and OD."
  },
  {
   "q": "What are the dimensions of a 2305 bearing?",
   "a": "Bore 25, OD 62, width 24 mm, r min 1.1 mm (Koyo and Emerson agree)."
  },
  {
   "q": "What are the dimensions of a 1305 bearing?",
   "a": "Bore 25, OD 62, width 17 mm, r min 1.1 mm."
  },
  {
   "q": "Is a 1205 the same size as a 6205?",
   "a": "In bore, OD and width, yes: both are 25 x 52 x 15 mm (6205 deep-groove, see the deep-groove page); the 2205 is 18 mm wide with the same bore and OD."
  }
 ],
 "files_license": null,
 "offers": [
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   "note": "1203 self-aligning ball bearing ring envelope: bore Ø17, OD Ø40, width 12; one solid ring, corners rounded at r min 0.6; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "1204-self-aligning-ball-bearing-envelope-20x47x14",
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   "note": "1204 self-aligning ball bearing ring envelope: bore Ø20, OD Ø47, width 14; one solid ring, corners rounded at r min 1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
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   "note": "1205 self-aligning ball bearing ring envelope: bore Ø25, OD Ø52, width 15; one solid ring, corners rounded at r min 1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
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   "note": "1206 self-aligning ball bearing ring envelope: bore Ø30, OD Ø62, width 16; one solid ring, corners rounded at r min 1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "1208-self-aligning-ball-bearing-envelope-40x80x18",
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   "note": "1208 self-aligning ball bearing ring envelope: bore Ø40, OD Ø80, width 18; one solid ring, corners rounded at r min 1.1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "1210-self-aligning-ball-bearing-envelope-50x90x20",
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   "note": "1210 self-aligning ball bearing ring envelope: bore Ø50, OD Ø90, width 20; one solid ring, corners rounded at r min 1.1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "1305-self-aligning-ball-bearing-envelope-25x62x17",
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  },
  {
   "file": "1306-self-aligning-ball-bearing-envelope-30x72x19",
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   "note": "1306 self-aligning ball bearing ring envelope: bore Ø30, OD Ø72, width 19; one solid ring, corners rounded at r min 1.1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "1308-self-aligning-ball-bearing-envelope-40x90x23",
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   "note": "1308 self-aligning ball bearing ring envelope: bore Ø40, OD Ø90, width 23; one solid ring, corners rounded at r min 1.5; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "2204-self-aligning-ball-bearing-envelope-20x47x18",
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   "note": "2204 self-aligning ball bearing ring envelope: bore Ø20, OD Ø47, width 18; one solid ring, corners rounded at r min 1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
  },
  {
   "file": "2205-self-aligning-ball-bearing-envelope-25x52x18",
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  },
  {
   "file": "2206-self-aligning-ball-bearing-envelope-30x62x20",
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   "note": "2206 self-aligning ball bearing ring envelope: bore Ø30, OD Ø62, width 20; one solid ring, corners rounded at r min 1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
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   "note": "2208 self-aligning ball bearing ring envelope: bore Ø40, OD Ø80, width 23; one solid ring, corners rounded at r min 1.1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
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  {
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   "note": "2305 self-aligning ball bearing ring envelope: bore Ø25, OD Ø62, width 24; one solid ring, corners rounded at r min 1.1; no balls, cage, spherical outer raceway or seal; cylindrical bore; nominal values"
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