{ "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": "two-roller-cam-yoke-44-rods-8", "name": "Two-roller cam yoke, roller pins 44 mm apart, 8 × 8 rods", "kind": "modern", "category": "Hardware", "group": "Mechanism parts", "year": null, "question": "What holds the rollers of a constant-diameter cam?", "tags": [ "mechanism part", "507 mechanical movements" ], "aliases": [ "cam yoke", "roller yoke", "yugo de dos rodillos", "Zweirollen-Kurvenrahmen" ], "overall_mm": { "length": 142, "width": 18, "height": 5 }, "official_cad": false, "xem_status": "free-files", "les": false, "free_files": 1, "url": "https://xemstudio.com/objects/two-roller-cam-yoke-44-rods-8/", "sheet_txt": "https://xemstudio.com/objects/two-roller-cam-yoke-44-rods-8/sheet.txt", "sheet": { "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance", "overall_mm": { "length": 142, "width": 18, "height": 5 }, "notes": [ "5 mm plate with two Ø3 holes 44 mm apart for the roller pins, a 28 × 10 slot clearing the Ø8 cam shaft over the whole stroke, and an 8 mm rod 40 long at each end; it sits 0.5 mm above the cam and the rollers hang under it on their pins.", "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)." ], "table": { "columns": [ "dimension", "value" ], "rows": [ [ "roller pins", "2 × Ø3, 44 mm apart" ], [ "shaft slot", "28 × 10" ], [ "rods", "2 × 8 × 40" ], [ "plate", "5 mm" ] ] } }, "sheet_text": "Two-roller cam yoke, roller pins 44 mm apart, 8 × 8 rods — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/two-roller-cam-yoke-44-rods-8/ (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Xem Studio design following Brown's figure (1868); true size, no printing allowance\nCatalog version: 2026-10-20\n\nOverall (mm): length 142.0, width 18.0, height 5.0\n- 5 mm plate with two Ø3 holes 44 mm apart for the roller pins, a 28 × 10 slot clearing the Ø8 cam shaft over the whole stroke, and an 8 mm rod 40 long at each end; it sits 0.5 mm above the cam and the rollers hang under it on their pins.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension value\nroller pins 2 × Ø3, 44 mm apart\nshaft slot 28 × 10\nrods 2 × 8 × 40\nplate 5 mm\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala\n- 507movements.com: Brown's movement No. 117: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_117.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/cam-between-rollers-yoke-mechanism/\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/two-roller-cam-yoke-44-rods-8/index.json\nAPI: https://xemstudio.com/api/geometry?object=two-roller-cam-yoke-44-rods-8\n", "sources": [ { "publisher": "Henry T. Brown (1868, public domain)", "title": "Five Hundred and Seven Mechanical Movements — scan on archive.org", "url": "https://archive.org/details/fivehundredseven00browiala", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "507movements.com", "title": "Brown's movement No. 117: figure, his text and an animation", "url": "https://507movements.com/mm_117.html", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "Xem Studio", "title": "drawing", "url": "https://xemstudio.com/objects/cam-between-rollers-yoke-mechanism/", "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": [ "cam-between-rollers-yoke-mechanism" ], "fits": [], "dimensions": "exact (nominal, no printing tolerance)", "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. 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.", "mating": [], "faq": [ { "q": "What holds the rollers of a constant-diameter cam?", "a": "5 mm plate with two Ø3 holes 44 mm apart for the roller pins, a 28 × 10 slot clearing the Ø8 cam shaft over the whole stroke, and an 8 mm rod 40 long at each end; it sits 0.5 mm above the cam and the rollers hang under it on their pins." } ], "files_license": { "name": "Xem Studio Design License", "holder": "Xem Studio", "url": "https://xemstudio.com/license/", "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files." }, "offers": [ { "file": "two-roller-cam-yoke-44", "formats": [ "step", "stl" ], "price_usd": 0, "license": "Xem Studio Design License", "step": "https://xemstudio.com/files/hardware/two-roller-cam-yoke-44-rods-8/two-roller-cam-yoke-44.step", "stl": "https://xemstudio.com/files/hardware/two-roller-cam-yoke-44-rods-8/two-roller-cam-yoke-44.stl", "note": "yoke, pins at (±22, 0), plate z 4.5..9.5" } ], "markdown": "https://xemstudio.com/objects/two-roller-cam-yoke-44-rods-8/index.md" }