# GT2 (2GT) closed-loop timing belts, 6 mm wide: standard lengths and tooth counts, 110 to 1524 mm > What closed-loop GT2 belt lengths exist and how many teeth does each have? - Category: Hardware › Bearings, rails & motion - Kind: Standard part - Basis: Two shop lists: HC Maschinentechnik (19 lengths with teeth) and Tinytronics (9 lengths); teeth = length / 2 - Page: https://xemstudio.com/objects/gt2-closed-loop-belt-lengths/ · JSON: https://xemstudio.com/api/geometry?object=gt2-closed-loop-belt-lengths · Plain text: https://xemstudio.com/objects/gt2-closed-loop-belt-lengths/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license - Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/) **Exact dimensions.** True size, with no tolerance added. ## Notes - Closed-loop (endless, welded or moulded) GT2 / 2GT belts, 2 mm pitch, 6 mm wide, in the lengths two shops list. Length is the pitch length (the cord line), so teeth = length / 2: HC Maschinentechnik prints the teeth for its 19 lengths and they equal length / 2, except that its description table lists 500 mm as 225 teeth while its length dropdown says 250 (500 / 2 = 250, which the table uses). Tinytronics prints lengths only (110, 158, 200, 280, 300, 320, 400, 610, 852 mm), so its teeth are length / 2 and not read from the shop. - These are shop stock lists, not a Gates catalog: other closed-loop lengths exist (the 2MR family in Gates' own catalog was not readable). 6 mm is the width both lists give; 9 and 10 mm GT2 loops exist but no table was read for them. - Two equal pulleys of N teeth and a belt of pitch length L: L = 2 C + pi x PD = 2 C + 2 N mm, so the centre distance is C = (L − 2 N) / 2 mm (pulley PD = N x 2 / pi). - No files: a closed loop is a length and a pitch, nothing more to model. ## Sizes | pitch length, mm | teeth (length / 2) | length, in | listed by | |---|---|---|---| | 110 | 55 | 4.33 | Tinytronics | | 122 | 61 | 4.80 | HC Maschinentechnik | | 140 | 70 | 5.51 | HC Maschinentechnik | | 158 | 79 | 6.22 | both shops | | 180 | 90 | 7.09 | HC Maschinentechnik | | 200 | 100 | 7.87 | both shops | | 232 | 116 | 9.13 | HC Maschinentechnik | | 260 | 130 | 10.24 | HC Maschinentechnik | | 280 | 140 | 11.02 | Tinytronics | | 300 | 150 | 11.81 | Tinytronics | | 320 | 160 | 12.60 | both shops | | 350 | 175 | 13.78 | HC Maschinentechnik | | 400 | 200 | 15.75 | both shops | | 450 | 225 | 17.72 | HC Maschinentechnik | | 500 | 250 | 19.69 | HC Maschinentechnik | | 600 | 300 | 23.62 | HC Maschinentechnik | | 610 | 305 | 24.02 | Tinytronics | | 760 | 380 | 29.92 | HC Maschinentechnik | | 852 | 426 | 33.54 | Tinytronics | | 860 | 430 | 33.86 | HC Maschinentechnik | | 976 | 488 | 38.43 | HC Maschinentechnik | | 1220 | 610 | 48.03 | HC Maschinentechnik | | 1360 | 680 | 53.54 | HC Maschinentechnik | | 1524 | 762 | 60.00 | HC Maschinentechnik | ## Where the files are - HC Maschinentechnik: [GT2 closed timing belt 6 mm wide: lengths and teeth (122 to 1524 mm)](https://hc-maschinentechnik.de/GT2-Closed-timing-belt-6mm-wide) — web — Publisher's page; dimensions are facts - Tinytronics: [GT2 timing belts 6 mm wide, closed loop: 110, 158, 200, 280, 300, 320, 400, 610, 852 mm](https://www.tinytronics.nl/en/3d-printing/parts/timing-belts) — web — Publisher's page; dimensions are facts ## Questions **How many teeth is a 400 mm GT2 belt?** 200 teeth (2 mm pitch). **What GT2 closed loop lengths are standard?** 110, 122, 140, 158, 180, 200, 232, 260, 280, 300, 320, 350, 400, 450, 500, 600, 610, 760, 852, 860, 976, 1220, 1360 and 1524 mm are listed by the two shops read. **How wide is a GT2 belt?** The loops read are 6 mm wide; 9 and 10 mm belts also exist but no table was read for them. ## Fits with - [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)](https://xemstudio.com/objects/gt2-timing-pulleys-18-60t-bores/) - [GT2 timing pulleys, 16T–60T (2 mm pitch)](https://xemstudio.com/objects/gt2-pulleys/) - [GT2 idler pulleys, toothed and smooth: 16T / 20T, 3 and 5 mm bore, OD, width, F623 / F625 bearing sizes](https://xemstudio.com/objects/gt2-idler-pulleys-toothed-smooth/) - [Timing belt profiles: GT2, HTD 3M / 5M / 8M, T5, T10, AT5, MXL, XL, L, H: pitch, tooth height and pulley pitch diameter](https://xemstudio.com/objects/timing-belt-profiles-pitch-and-tooth/) - [HTD 3M and 5M timing belts: standard lengths (105-3M to 1926-3M, 120-5M to 2350-5M) and tooth counts](https://xemstudio.com/objects/htd-3m-5m-belt-lengths/) - [T5 and AT5 endless timing belts (Gates PU-T5, PU-AT5): standard lengths 150 to 1500 mm with tooth counts](https://xemstudio.com/objects/pu-t5-at5-belt-lengths/) - [XL timing belts (1/5 in pitch, Gates PowerGrip): lengths 46-XL to 770-XL, pitch length in mm and teeth](https://xemstudio.com/objects/xl-timing-belt-lengths/)