{
 "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": "caster-top-plate-patterns",
 "name": "Caster top plates: plate size, bolt-hole spacing, hole diameter and mounting height (Blickle, TENTE, Colson, Albion) + 100 × 85 hole template",
 "kind": "standard",
 "category": "Hardware",
 "group": "Casters & wheels",
 "year": null,
 "question": "What are the top plate size and bolt hole pattern of a swivel caster: 2-1/2 × 3-5/8 in, 4 × 4-1/2 in, 100 × 85 mm?",
 "tags": [
  "caster",
  "castor",
  "top plate",
  "swivel caster",
  "plate caster",
  "bolt hole spacing",
  "mounting plate",
  "wheel",
  "tool"
 ],
 "aliases": [
  "caster plate size",
  "castor top plate dimensions",
  "caster bolt pattern",
  "2-1/2 x 3-5/8 caster plate",
  "4 x 4-1/2 caster plate",
  "caster mounting plate dimensions",
  "blickle caster plate 100x85",
  "caster hole spacing 80x60",
  "colson caster plate",
  "albion caster plate",
  "tente castor plate"
 ],
 "overall_mm": {
  "length": 100,
  "width": 85,
  "height": 4
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/caster-top-plate-patterns/",
 "sheet_txt": "https://xemstudio.com/objects/caster-top-plate-patterns/sheet.txt",
 "sheet": {
  "basis": "Maker datasheets (Blickle LK / BK-ALST and LMDA-TPA, TENTE ALPHA) and retailer listings of Colson and Albion casters, read in this session; one hole-pattern template plate as a file",
  "overall_mm": {
   "length": 100,
   "width": 85,
   "height": 4
  },
  "notes": [
   "A swivel or rigid plate caster bolts to the equipment by four holes in its top plate. The pattern is quoted as the spacing between hole centres, long side × short side; the plate is the outside of the steel. Rows marked mm are the maker's metric table (Blickle, TENTE), rows marked in are US catalogue rows as printed (fractions of an inch). The sources do not say which number is length and which is width, so the order printed is kept.",
   "A pattern can be a slot: Colson's 2 series is listed with bolt spacing 1-3/4 × 3 in on three retail pages, 1-3/4 × 2-13/16 slotted to 3-1/16 on another, and 2-3/8 × 3-5/8 plates are listed 1-3/4 × 2-3/4 slotted to 3. The sources disagree on the second spacing (3, 2-13/16 and 2-3/4 in, the last two with a slot), and the plate is 2-1/2 in on most pages but 2-3/8 in on one, so the slot length and the exact second spacing must be checked on the caster's own drawing. Albion's 4 × 4-1/2 plate is listed 2-5/8 × 3-5/8 slotted to 3 × 3.",
   "Hole diameter: Blickle prints 9 mm (100 × 85 plates) and 11 mm (140 × 110 plates) and TENTE 9 mm; the Blickle 140 × 110 plate spacing is printed as 105 × 75–80, a range, so no template is drawn for it. TENTE prints the long spacing as '80/77', two values, so the TENTE plate is not drawn. The US listings give only the mounting bolt (5/16 in for Colson / Alco, 3/8 in for Albion), not the hole diameter, so no inch template is drawn.",
   "Heights are as labelled by each source: Blickle and TENTE 'total height' (mm), the US listings 'mounting height' (floor to the underside of the plate), 'overall height' or 'load height'. These are not the same measure, so do not compare across rows without checking. Offset (swivel lead) is the horizontal distance from the swivel axis to the wheel axle.",
   "The file is a hole-pattern template: a 100 × 85 mm plate with four Ø9 holes on an 80 × 60 mm rectangle (Blickle LK / BK-ALST 82K, 100K-1, 125K-1). The 100 × 85 plate, 80 × 60 spacing and Ø9 are the published numbers; the 4 mm thickness, 6 mm corner radius and the central 50 × 35 mm aperture are Xem choices. Real plates are pressed steel with a swivel race; none of that is modelled.",
   "McMaster-Carr's caster category is linked for per-part STEP; nothing is copied. Plate and stem sizes of Jarvis, Albion, Colson, Tente, Blickle and others also vary per series, so check the series you buy."
  ],
  "table": {
   "columns": [
    "caster",
    "units",
    "wheel Ø × width",
    "load",
    "height",
    "top plate",
    "bolt hole spacing",
    "hole / bolt",
    "offset"
   ],
   "rows": [
    [
     "Blickle LK/BK-ALST 82K",
     "mm",
     "80 × 40",
     "230 kg",
     "110",
     "100 × 85",
     "80 × 60",
     "9",
     "40"
    ],
    [
     "Blickle LK/BK-ALST 100K-1",
     "mm",
     "100 × 40",
     "320 kg",
     "130",
     "100 × 85",
     "80 × 60",
     "9",
     "45"
    ],
    [
     "Blickle LK/BK-ALST 100K-3",
     "mm",
     "100 × 40",
     "320 kg",
     "130",
     "140 × 110",
     "105 × 75–80",
     "11",
     "45"
    ],
    [
     "Blickle LK/BK-ALST 125K-1",
     "mm",
     "125 × 40",
     "350 kg",
     "155",
     "100 × 85",
     "80 × 60",
     "9",
     "48"
    ],
    [
     "Blickle LK/BK-ALST 125K-3",
     "mm",
     "125 × 40",
     "350 kg",
     "155",
     "140 × 110",
     "105 × 75–80",
     "11",
     "48"
    ],
    [
     "Blickle LK/BK-ALST 127K",
     "mm",
     "125 × 54",
     "450 kg",
     "170",
     "140 × 110",
     "105 × 75–80",
     "11",
     "55"
    ],
    [
     "Blickle LK/BK-ALST 150K",
     "mm",
     "150 × 50",
     "500 kg",
     "197",
     "140 × 110",
     "105 × 75–80",
     "11",
     "60"
    ],
    [
     "Blickle LK/BK-ALST 160K",
     "mm",
     "160 × 50",
     "580 kg",
     "202",
     "140 × 110",
     "105 × 75–80",
     "11",
     "60"
    ],
    [
     "Blickle LK/BK-ALST 180K",
     "mm",
     "180 × 50",
     "600 kg",
     "223",
     "140 × 110",
     "105 × 75–80",
     "11",
     "65"
    ],
    [
     "Blickle LK/BK-ALST 200K",
     "mm",
     "200 × 50",
     "600 kg",
     "245",
     "140 × 110",
     "105 × 75–80",
     "11",
     "62"
    ],
    [
     "TENTE ALPHA 8370PJD100P62",
     "mm",
     "100",
     "80 kg (160 static)",
     "128",
     "105 × 85",
     "80/77 × 60",
     "9",
     "35"
    ],
    [
     "Blickle LMDA-TPA 50G / 50K-FK (central bolt hole)",
     "mm",
     "50 × 2×19",
     "80 kg",
     "71",
     "Ø41 round",
     "single central hole",
     "10.2",
     "31"
    ],
    [
     "Blickle LMDA-TPA 75G / 75K-FK (central bolt hole)",
     "mm",
     "75 × 2×25",
     "100 kg",
     "98",
     "Ø55 round",
     "single central hole",
     "10.2",
     "34"
    ],
    [
     "Colson 2.03256.441 (Global Industrial)",
     "in",
     "3-1/2 × 1-1/4",
     "250 lb",
     "4-11/16 (overall)",
     "2-1/2 × 3-5/8",
     "1-3/4 × 2-13/16, slotted to 3-1/16",
     "5/16 bolt (hole not printed)",
     "not printed"
    ],
    [
     "Colson 2.03356.42 (Access Casters)",
     "in",
     "3 × 1-1/4",
     "—",
     "4-1/8 (mounting)",
     "2-1/2 × 3-5/8",
     "1-3/4 × 3",
     "not printed",
     "not printed"
    ],
    [
     "Colson 4P20PFS (Access Casters)",
     "in",
     "4 × 1-1/4",
     "—",
     "5-1/4 (mounting)",
     "listing says 2-1/2 × 3-5/8 'to plate', not labelled as plate size",
     "1-3/4 × 3",
     "not printed",
     "not printed"
    ],
    [
     "Colson 2.05256.445 (Access Casters)",
     "in",
     "5 × 1-1/4",
     "—",
     "6-3/16 (mounting)",
     "2-1/2 × 3-5/8",
     "1-3/4 × 3",
     "not printed",
     "not printed"
    ],
    [
     "5 in caster (Alco Sales 41109-TG)",
     "in",
     "5 × 1-1/4",
     "—",
     "6-1/4 (load height)",
     "2-3/8 × 3-5/8",
     "1-3/4 × 2-3/4, slotted to 3",
     "5/16 bolt (hole not printed)",
     "not printed"
    ],
    [
     "Albion 18XS04228S (CasterHQ)",
     "in",
     "4 × 2",
     "—",
     "5.63 (mounting)",
     "4 × 4-1/2",
     "2-5/8 × 3-5/8, slotted to 3 × 3",
     "3/8 bolt (hole not printed)",
     "1-11/16"
    ]
   ]
  }
 },
 "sheet_text": "Caster top plates: plate size, bolt-hole spacing, hole diameter and mounting height (Blickle, TENTE, Colson, Albion) + 100 × 85 hole template — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/caster-top-plate-patterns/  (sheet CC BY 4.0)\nBasis: Maker datasheets (Blickle LK / BK-ALST and LMDA-TPA, TENTE ALPHA) and retailer listings of Colson and Albion casters, read in this session; one hole-pattern template plate as a file\nCatalog version: 2026-10-20\n\nOverall (mm): length 100.0, width 85.0, height 4.0\n- A swivel or rigid plate caster bolts to the equipment by four holes in its top plate. The pattern is quoted as the spacing between hole centres, long side × short side; the plate is the outside of the steel. Rows marked mm are the maker's metric table (Blickle, TENTE), rows marked in are US catalogue rows as printed (fractions of an inch). The sources do not say which number is length and which is width, so the order printed is kept.\n- A pattern can be a slot: Colson's 2 series is listed with bolt spacing 1-3/4 × 3 in on three retail pages, 1-3/4 × 2-13/16 slotted to 3-1/16 on another, and 2-3/8 × 3-5/8 plates are listed 1-3/4 × 2-3/4 slotted to 3. The sources disagree on the second spacing (3, 2-13/16 and 2-3/4 in, the last two with a slot), and the plate is 2-1/2 in on most pages but 2-3/8 in on one, so the slot length and the exact second spacing must be checked on the caster's own drawing. Albion's 4 × 4-1/2 plate is listed 2-5/8 × 3-5/8 slotted to 3 × 3.\n- Hole diameter: Blickle prints 9 mm (100 × 85 plates) and 11 mm (140 × 110 plates) and TENTE 9 mm; the Blickle 140 × 110 plate spacing is printed as 105 × 75–80, a range, so no template is drawn for it. TENTE prints the long spacing as '80/77', two values, so the TENTE plate is not drawn. The US listings give only the mounting bolt (5/16 in for Colson / Alco, 3/8 in for Albion), not the hole diameter, so no inch template is drawn.\n- Heights are as labelled by each source: Blickle and TENTE 'total height' (mm), the US listings 'mounting height' (floor to the underside of the plate), 'overall height' or 'load height'. These are not the same measure, so do not compare across rows without checking. Offset (swivel lead) is the horizontal distance from the swivel axis to the wheel axle.\n- The file is a hole-pattern template: a 100 × 85 mm plate with four Ø9 holes on an 80 × 60 mm rectangle (Blickle LK / BK-ALST 82K, 100K-1, 125K-1). The 100 × 85 plate, 80 × 60 spacing and Ø9 are the published numbers; the 4 mm thickness, 6 mm corner radius and the central 50 × 35 mm aperture are Xem choices. Real plates are pressed steel with a swivel race; none of that is modelled.\n- McMaster-Carr's caster category is linked for per-part STEP; nothing is copied. Plate and stem sizes of Jarvis, Albion, Colson, Tente, Blickle and others also vary per series, so check the series you buy.\n\ncaster  units  wheel Ø × width  load  height  top plate  bolt hole spacing  hole / bolt  offset\nBlickle LK/BK-ALST 82K  mm  80 × 40  230 kg  110  100 × 85  80 × 60  9  40\nBlickle LK/BK-ALST 100K-1  mm  100 × 40  320 kg  130  100 × 85  80 × 60  9  45\nBlickle LK/BK-ALST 100K-3  mm  100 × 40  320 kg  130  140 × 110  105 × 75–80  11  45\nBlickle LK/BK-ALST 125K-1  mm  125 × 40  350 kg  155  100 × 85  80 × 60  9  48\nBlickle LK/BK-ALST 125K-3  mm  125 × 40  350 kg  155  140 × 110  105 × 75–80  11  48\nBlickle LK/BK-ALST 127K  mm  125 × 54  450 kg  170  140 × 110  105 × 75–80  11  55\nBlickle LK/BK-ALST 150K  mm  150 × 50  500 kg  197  140 × 110  105 × 75–80  11  60\nBlickle LK/BK-ALST 160K  mm  160 × 50  580 kg  202  140 × 110  105 × 75–80  11  60\nBlickle LK/BK-ALST 180K  mm  180 × 50  600 kg  223  140 × 110  105 × 75–80  11  65\nBlickle LK/BK-ALST 200K  mm  200 × 50  600 kg  245  140 × 110  105 × 75–80  11  62\nTENTE ALPHA 8370PJD100P62  mm  100  80 kg (160 static)  128  105 × 85  80/77 × 60  9  35\nBlickle LMDA-TPA 50G / 50K-FK (central bolt hole)  mm  50 × 2×19  80 kg  71  Ø41 round  single central hole  10.2  31\nBlickle LMDA-TPA 75G / 75K-FK (central bolt hole)  mm  75 × 2×25  100 kg  98  Ø55 round  single central hole  10.2  34\nColson 2.03256.441 (Global Industrial)  in  3-1/2 × 1-1/4  250 lb  4-11/16 (overall)  2-1/2 × 3-5/8  1-3/4 × 2-13/16, slotted to 3-1/16  5/16 bolt (hole not printed)  not printed\nColson 2.03356.42 (Access Casters)  in  3 × 1-1/4  —  4-1/8 (mounting)  2-1/2 × 3-5/8  1-3/4 × 3  not printed  not printed\nColson 4P20PFS (Access Casters)  in  4 × 1-1/4  —  5-1/4 (mounting)  listing says 2-1/2 × 3-5/8 'to plate', not labelled as plate size  1-3/4 × 3  not printed  not printed\nColson 2.05256.445 (Access Casters)  in  5 × 1-1/4  —  6-3/16 (mounting)  2-1/2 × 3-5/8  1-3/4 × 3  not printed  not printed\n5 in caster (Alco Sales 41109-TG)  in  5 × 1-1/4  —  6-1/4 (load height)  2-3/8 × 3-5/8  1-3/4 × 2-3/4, slotted to 3  5/16 bolt (hole not printed)  not printed\nAlbion 18XS04228S (CasterHQ)  in  4 × 2  —  5.63 (mounting)  4 × 4-1/2  2-5/8 × 3-5/8, slotted to 3 × 3  3/8 bolt (hole not printed)  1-11/16\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Blickle (via Raptor Supplies datasheet): LK-ALST / BK-ALST / BH-ALST pressed-steel castors: wheel diameter and width, total height, top plate size, bolt hole spacing, bolt hole diameter, offset (82K to 200K) — web — Maker datasheet; numbers only — https://static.raptorsupplies.com/catalog/product/datasheet/blickle-bk-alst-100k-1.pdf\n- Blickle (via Raptor Supplies datasheet): LMDA-TPA 50 / 75 castors with central bolt-hole fitting: wheel diameter, total height, plate diameter, bolt hole diameter, offset — web — Maker datasheet; numbers only — https://static.raptorsupplies.com/catalog/product/datasheet/blickle-lmda-tpa-50k-fk.pdf\n- TENTE (via RS Components datasheet): ALPHA swivel castor 8370PJD100P62: wheel 100, plate 105 x 85, bolt hole spacing 80/77 x 60, hole 9, height 128, offset 35 — web — Maker datasheet; numbers only — https://docs.rs-online.com/1d01/A700000012772822.pdf\n- Global Industrial (listing of Colson 2.03256.441): Colson 2 Series swivel plate caster: plate 2-1/2 x 3-5/8, bolt spacing 1-3/4 x 2-13/16 slotted to 3-1/16, mounting bolt 5/16 — web — Retailer listing; numbers only — https://www.globalindustrial.com/p/2-series-swivel-plate-caster-203256441-rubber-on-polyolefin-3-1-2dia-250-lb-cap\n- Access Casters (listing of Colson 2.03356.42): 3 in Colson caster: plate 2-1/2 x 3-5/8, bolt hole spacing 1-3/4 x 3, mounting height 4-1/8 — web — Retailer listing; numbers only — https://accesscasters.com/2-03356-42-3-inch-colson-caster-with-hi-tech-rubber-wheel.aspx\n- Access Casters (listing of Colson 4P20PFS): 4 in Colson caster with Performa rubber wheel: bolt hole spacing 1-3/4 x 3, mounting height 5-1/4 — web — Retailer listing; numbers only — https://accesscasters.com/4p20pfs-4-swivel-caster-with-colson-4-performa-rubber-wheel\n- Access Casters (listing of Colson 2.05256.445): 5 in Colson caster: plate 2-1/2 x 3-5/8, bolt hole spacing 1-3/4 x 3, mounting height 6-3/16 — web — Retailer listing; numbers only — https://accesscasters.com/2-05256-445-5-inch-colson-caster-with-performa-rubber-wheel.aspx\n- Alco Sales (listing 41109-TG): 5 in caster: top plate 2-3/8 x 3-5/8, bolt hole spacing 1-3/4 x 2-3/4 slotted to 3, mounting bolt 5/16, load height 6-1/4 — web — Retailer listing; numbers only — https://alcosales.com/products/41109-tg.asp\n- CasterHQ (listing of Albion 18XS04228S): Albion 4 x 2 swivel caster: plate 4 x 4-1/2, bolt hole pattern 2-5/8 x 3-5/8 slotted to 3 x 3, mounting height 5.63, offset 1-11/16, swivel radius 3-11/16, mounting bolt 3/8 — web — Retailer listing; numbers only — https://casterhq.com/products/albion-casters-4-x-2-maintenance-free-swivel-caster-with-flat-performance-rubber-wheel-and-4-x-4-5-plate-high-durability-smooth-operation-model-18xs04228s\n- McMaster-Carr: Casters (plate, stem, bolt-hole) (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/casters/\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=caster-top-plate-patterns\n",
 "sources": [
  {
   "publisher": "Blickle (via Raptor Supplies datasheet)",
   "title": "LK-ALST / BK-ALST / BH-ALST pressed-steel castors: wheel diameter and width, total height, top plate size, bolt hole spacing, bolt hole diameter, offset (82K to 200K)",
   "url": "https://static.raptorsupplies.com/catalog/product/datasheet/blickle-bk-alst-100k-1.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker datasheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Blickle (via Raptor Supplies datasheet)",
   "title": "LMDA-TPA 50 / 75 castors with central bolt-hole fitting: wheel diameter, total height, plate diameter, bolt hole diameter, offset",
   "url": "https://static.raptorsupplies.com/catalog/product/datasheet/blickle-lmda-tpa-50k-fk.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker datasheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "TENTE (via RS Components datasheet)",
   "title": "ALPHA swivel castor 8370PJD100P62: wheel 100, plate 105 x 85, bolt hole spacing 80/77 x 60, hole 9, height 128, offset 35",
   "url": "https://docs.rs-online.com/1d01/A700000012772822.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker datasheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Global Industrial (listing of Colson 2.03256.441)",
   "title": "Colson 2 Series swivel plate caster: plate 2-1/2 x 3-5/8, bolt spacing 1-3/4 x 2-13/16 slotted to 3-1/16, mounting bolt 5/16",
   "url": "https://www.globalindustrial.com/p/2-series-swivel-plate-caster-203256441-rubber-on-polyolefin-3-1-2dia-250-lb-cap",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Access Casters (listing of Colson 2.03356.42)",
   "title": "3 in Colson caster: plate 2-1/2 x 3-5/8, bolt hole spacing 1-3/4 x 3, mounting height 4-1/8",
   "url": "https://accesscasters.com/2-03356-42-3-inch-colson-caster-with-hi-tech-rubber-wheel.aspx",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Access Casters (listing of Colson 4P20PFS)",
   "title": "4 in Colson caster with Performa rubber wheel: bolt hole spacing 1-3/4 x 3, mounting height 5-1/4",
   "url": "https://accesscasters.com/4p20pfs-4-swivel-caster-with-colson-4-performa-rubber-wheel",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Access Casters (listing of Colson 2.05256.445)",
   "title": "5 in Colson caster: plate 2-1/2 x 3-5/8, bolt hole spacing 1-3/4 x 3, mounting height 6-3/16",
   "url": "https://accesscasters.com/2-05256-445-5-inch-colson-caster-with-performa-rubber-wheel.aspx",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Alco Sales (listing 41109-TG)",
   "title": "5 in caster: top plate 2-3/8 x 3-5/8, bolt hole spacing 1-3/4 x 2-3/4 slotted to 3, mounting bolt 5/16, load height 6-1/4",
   "url": "https://alcosales.com/products/41109-tg.asp",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "CasterHQ (listing of Albion 18XS04228S)",
   "title": "Albion 4 x 2 swivel caster: plate 4 x 4-1/2, bolt hole pattern 2-5/8 x 3-5/8 slotted to 3 x 3, mounting height 5.63, offset 1-11/16, swivel radius 3-11/16, mounting bolt 3/8",
   "url": "https://casterhq.com/products/albion-casters-4-x-2-maintenance-free-swivel-caster-with-flat-performance-rubber-wheel-and-4-x-4-5-plate-high-durability-smooth-operation-model-18xs04228s",
   "formats": [
    "web"
   ],
   "license": "Retailer listing; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Casters (plate, stem, bolt-hole) (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/casters/",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "caster-stems-threaded-grip-ring",
  "t-slot-feet",
  "leveling-feet-gn-343-and-mcmaster",
  "v-slot-wheels-eccentric-spacers",
  "socket-head-cap-screws-metric",
  "hand-truck-wheels-8-and-10-in"
 ],
 "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": "4 mounting holes Ø9 on 80 × 60 mm rectangle",
   "exact": "Ø9.0 through, 4 on 80 × 60 (Blickle LK / BK-ALST 82K, 100K-1, 125K-1; 100 × 85 plate)",
   "mates": "bolts or screws through the equipment's matching 80 × 60 tapped or clearance holes (bolt size not printed by the Blickle sheet)",
   "fit": "slide",
   "files": "caster-plate-100x85"
  }
 ],
 "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 plate size of a Colson 2-series caster?",
   "a": "2-1/2 × 3-5/8 in on the Colson listings read (one retailer prints 2-3/8 × 3-5/8 for a similar 5 in caster); bolt spacing 1-3/4 × 3 in, or 1-3/4 × 2-13/16 / 2-3/4 slotted."
  },
  {
   "q": "What bolt pattern does a 4 × 4-1/2 in caster plate have?",
   "a": "2-5/8 × 3-5/8 in, slotted to 3 × 3 in, on the Albion listing read; the hole diameter is not printed (3/8 in bolt)."
  },
  {
   "q": "What hole pattern do Blickle 100 × 85 mm caster plates have?",
   "a": "Four Ø9 mm holes on an 80 × 60 mm rectangle (82K, 100K-1, 125K-1)."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/caster-top-plate-patterns/index.md"
}