GT2 Timing Belts
GT2 timing belts (2GT, 3GT) for 3D printers, CNC machines and light automation. Open-ended GT2 belts with fiberglass reinforcement, cut to length.
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Why GT2 Timing Belts
GT2 timing belts (2GT, 3GT) for 3D printers, CNC machines and light automation. Open-ended GT2 belts with fiberglass reinforcement, cut to length.
- Why GT2 Became the Maker-Space Standard GT2 belts combine three properties that matter in motion systems: a small tooth pitch for fine resolution, low backlash from the curvilinear profile, and a fiberglass-reinforced core that keeps stretch low. A 2GT belt on a 20-tooth pulley moves the axis 40 mm per revolution — repeatable within the belt's elastic limit.
- Open-Ended GT2 Belts Cut to Length GT2 belts are supplied open-ended in continuous rolls and cut to the exact length your axis needs. Common roll stock is 6 mm wide (with 9 and 10 mm for heavier gantries). Joining is done with clamps or by welding for endless loops.
- GT2 vs GT3 vs 2GT: What the Numbers Mean
- What to Check When Replacing a 3D Printer Belt Three specs matter: pitch (2 mm for GT2), width (6 mm is standard on most printers), and length (measured center-to-center of the two pulleys, plus one tooth engagement allowance). Teeth per meter is fixed by the pitch — a 2 mm pitch belt always has 500 teeth per meter. ## GT2 Timing Belt Technical Specifications
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Why GT2 Became the Maker-Space Standard
GT2 belts combine three properties that matter in motion systems: a small tooth pitch for fine resolution, low backlash from the curvilinear profile, and a fiberglass-reinforced core that keeps stretch low. A 2GT belt on a 20-tooth pulley moves the axis 40 mm per revolution — repeatable within the b
What to Check When Replacing a 3D Printer Belt
Three specs matter: pitch (2 mm for GT2), width (6 mm is standard on most printers), and length (measured center-to-center of the two pulleys, plus one tooth engagement allowance). Teeth per meter is fixed by the pitch — a 2 mm pitch belt always has 500 teeth per meter.
What size GT2 belt does my 3D printer need?
Measure the belt width (most printers use 6 mm) and the center-to-center distance between the two pulleys on each axis. Belt length = 2 × center distance + π × pulley pitch diameter. When in doubt, order open-ended and cut to length.
Are GT2 and 2GT the same?
Yes. 2GT refers to the 2 mm pitch; GT2 is the common shorthand. Both use the same tooth geometry and are interchangeable as long as the pitch matches.
Can GT2 belts be joined into loops?
Yes. Open-ended GT2 can be welded or clamped into endless loops. Welded joints suit conveyor-style loops; clamps suit 3D printer axes where quick replacement matters.