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Spur gears, module 1: 10 to 80 teeth (20° involute)

What is the pitch diameter of a module 1 spur gear? · Hardware · basis: ISO 53 basic rack: 20° pressure angle, addendum m, dedendum 1.25 m; pitch Ø = m × teeth, tip Ø = m × (teeth + 2), root Ø = m × (teeth − 2.5)

Exact dimensions. True size, with no printing tolerance added.

sizes
26 in table

Notes

  • Centre distance of two module 1 gears = m × (N1 + N2) / 2. Face width 8 mm, plain bore (add a hub, key or set screw to suit). Teeth below 17 are drawn without profile shift, so they undercut as real unshifted gears do.

Sizes

teethpitch_dia_mmtip_dia_mmroot_dia_mmface_mmbore_mm
1010.012.07.58.03
1212.014.09.58.03
1414.016.011.58.04
1515.017.012.58.04
1616.018.013.58.05
1818.020.015.58.05
2020.022.017.58.06
2222.024.019.58.07
2424.026.021.58.08
2525.027.022.58.08
2828.030.025.58.09
3030.032.027.58.010
3232.034.029.58.010
3535.037.032.58.011
3636.038.033.58.012
4040.042.037.58.013
4242.044.039.58.014
4545.047.042.58.015
4848.050.045.58.016
5050.052.047.58.017
5656.058.053.58.019
6060.062.057.58.020
6464.066.061.58.022
7070.072.067.58.024
7272.074.069.58.024
8080.082.077.58.025

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

ISOISO 53 standard basic rack (20° pressure angle, addendum 1 m, dedendum 1.25 m) and ISO 54 modulesstandardISO; dimensions are facts verify

Free files

★ Free files 26 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

gear-m1-10tmodule 1, 10 teeth: pitch Ø10, tip Ø12, root Ø7.5, face 8, bore Ø3STEP · STL
gear-m1-12tmodule 1, 12 teeth: pitch Ø12, tip Ø14, root Ø9.5, face 8, bore Ø3STEP · STL
gear-m1-14tmodule 1, 14 teeth: pitch Ø14, tip Ø16, root Ø11.5, face 8, bore Ø4STEP · STL
gear-m1-15tmodule 1, 15 teeth: pitch Ø15, tip Ø17, root Ø12.5, face 8, bore Ø4STEP · STL
gear-m1-16tmodule 1, 16 teeth: pitch Ø16, tip Ø18, root Ø13.5, face 8, bore Ø5STEP · STL
gear-m1-18tmodule 1, 18 teeth: pitch Ø18, tip Ø20, root Ø15.5, face 8, bore Ø5STEP · STL
gear-m1-20tmodule 1, 20 teeth: pitch Ø20, tip Ø22, root Ø17.5, face 8, bore Ø6STEP · STL
gear-m1-22tmodule 1, 22 teeth: pitch Ø22, tip Ø24, root Ø19.5, face 8, bore Ø7STEP · STL
gear-m1-24tmodule 1, 24 teeth: pitch Ø24, tip Ø26, root Ø21.5, face 8, bore Ø8STEP · STL
gear-m1-25tmodule 1, 25 teeth: pitch Ø25, tip Ø27, root Ø22.5, face 8, bore Ø8STEP · STL
gear-m1-28tmodule 1, 28 teeth: pitch Ø28, tip Ø30, root Ø25.5, face 8, bore Ø9STEP · STL
gear-m1-30tmodule 1, 30 teeth: pitch Ø30, tip Ø32, root Ø27.5, face 8, bore Ø10STEP · STL
gear-m1-32tmodule 1, 32 teeth: pitch Ø32, tip Ø34, root Ø29.5, face 8, bore Ø10STEP · STL
gear-m1-35tmodule 1, 35 teeth: pitch Ø35, tip Ø37, root Ø32.5, face 8, bore Ø11STEP · STL
gear-m1-36tmodule 1, 36 teeth: pitch Ø36, tip Ø38, root Ø33.5, face 8, bore Ø12STEP · STL
gear-m1-40tmodule 1, 40 teeth: pitch Ø40, tip Ø42, root Ø37.5, face 8, bore Ø13STEP · STL
gear-m1-42tmodule 1, 42 teeth: pitch Ø42, tip Ø44, root Ø39.5, face 8, bore Ø14STEP · STL
gear-m1-45tmodule 1, 45 teeth: pitch Ø45, tip Ø47, root Ø42.5, face 8, bore Ø15STEP · STL
gear-m1-48tmodule 1, 48 teeth: pitch Ø48, tip Ø50, root Ø45.5, face 8, bore Ø16STEP · STL
gear-m1-50tmodule 1, 50 teeth: pitch Ø50, tip Ø52, root Ø47.5, face 8, bore Ø17STEP · STL
gear-m1-56tmodule 1, 56 teeth: pitch Ø56, tip Ø58, root Ø53.5, face 8, bore Ø19STEP · STL
gear-m1-60tmodule 1, 60 teeth: pitch Ø60, tip Ø62, root Ø57.5, face 8, bore Ø20STEP · STL
gear-m1-64tmodule 1, 64 teeth: pitch Ø64, tip Ø66, root Ø61.5, face 8, bore Ø22STEP · STL
gear-m1-70tmodule 1, 70 teeth: pitch Ø70, tip Ø72, root Ø67.5, face 8, bore Ø24STEP · STL
gear-m1-72tmodule 1, 72 teeth: pitch Ø72, tip Ø74, root Ø69.5, face 8, bore Ø24STEP · STL
gear-m1-80tmodule 1, 80 teeth: pitch Ø80, tip Ø82, root Ø77.5, face 8, bore Ø25STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=spur-gears-module-1

Spur gears, module 1: 10 to 80 teeth (20° involute), isometric render of a generated part
Render of gear-m1-35t from the free STEP; not to scale.

Fits with

Spur gears, module 0.5: 10 to 80 teeth (20° involute), isometric render of a generated part
Spur gears, module 0.5: 10 to 80 teeth (20° involute)26 sizes★ 26 files
Spur gears, module 0.8: 10 to 80 teeth (20° involute), isometric render of a generated part
Spur gears, module 0.8: 10 to 80 teeth (20° involute)26 sizes★ 26 files
Spur gears, module 1.25: 10 to 80 teeth (20° involute), isometric render of a generated part
Spur gears, module 1.25: 10 to 80 teeth (20° involute)26 sizes★ 26 files
Spur gears, module 1.5: 10 to 80 teeth (20° involute), isometric render of a generated part
Spur gears, module 1.5: 10 to 80 teeth (20° involute)26 sizes★ 26 files
Spur gears, module 2: 10 to 80 teeth (20° involute), isometric render of a generated part
Spur gears, module 2: 10 to 80 teeth (20° involute)26 sizes★ 26 files
Spur gears, involute 20°: module 0.5, 1 and 2, 12–60 teeth, isometric render of a generated part
Spur gears, involute 20°: module 0.5, 1 and 2, 12–60 teeth21 sizes★ 21 files

Questions

Pitch diameter of a module 1, 20-tooth gear?

20 mm; tip 22 mm.

Centre distance?

m × (N1 + N2) / 2: a 20 and a 40 tooth module 1 pair sit 30 mm apart.