GT2 timing pulleys 18T to 60T: pitch and outside diameter, flange, bores 5 / 6 / 8 mm, 6 and 9 mm belts (+ 64 to 80T diameters)

sizes

26 in table

Notes

• GT2 (2GT, 2 mm pitch): pitch diameter PD = teeth x 2 / pi and outside diameter OD = PD − 0.508 mm (pitch-line differential 0.254 mm). Misumi's 2GT table (14 to 60 teeth) is the source of the first 21 rows; PD and OD of every one of them agree with that rule to rounding (checked in the generator). Rows for 64 to 80 teeth (bottom) are the same rule, not a maker table: Misumi stops at 60T, so no flange Ø is given for them.
• F is Misumi's flange diameter (its flange-cut rule reads FC >= OD + 1 and FC <= F − 2). Misumi's belt-width block prints three numbers per belt width: A, W and L = belt 4 mm (GT2040): A 5.0, W 8.3, L 16.0; belt 6 mm (GT2060): A 7.0, W 10.3, L 18.0; belt 9 mm (GT2090): A 10.0, W 13.3, L 21.0. The text read does not define A, W or L; the files use A as the width of the toothed section (it is 1 mm more than the belt on all three belts). SDP/SI's 60T / 9 mm belt / 6 mm bore pulley prints PD 38.2, OD 37.7, hub Ø31 and overall length 21.4, the same PD and OD.
• Bore: the last column is the first range printed in Misumi's bore-selection grid for that tooth count (a text extraction of a table, so ranges can be off by a column). 5 mm only reaches 30T there; 16T is listed with 3 and 4 mm bores only (the existing gt2-pulleys page has a 16T / 5 mm bore file).
• Files: 23 pulleys, 18T to 60T, for 6 mm belts (tooth section 7 mm) and 9 mm belts (10 mm), bores Ø5, Ø6 and Ø8 where Misumi's range allows them. Each is a toothed ring with a flange Ø F on both sides and a plain bore at the nominal diameter. Tooth form: round grooves (the same approximation as the gt2-pulleys page), NOT the Gates profile, which is not published; use it for clearance and fit, not belt-grade meshing. Flange thickness 1 mm is an example. No hub, no set-screw holes: the hub diameter is not in the text read.
• Left out: the 10 mm belt width (no table read gives its pulley widths), 16T and 61 to 80T files (no flange Ø in the sources), hubs and set screws, 14 / 15 / 21 / 22 / 25 / 26 / 28 / 32 / 34 / 38 / 44 / 50T (in the table, no file).

GT2 timing pulleys 18T to 60T: pitch and outside diameter, flange… size chart

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.

Where the files are

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

Free files

★ Free files 23 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

Plain text: sheet.txt · JSON: /api/geometry?object=gt2-timing-pulleys-18-60t-bores

Fits with

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