Open-End Polyurethane Timing Belt with Steel Core — 2GT / 3M / 5M / 8M / XL / MXL / T5 / T10 / L / H Profiles, Green White Black

Match the belt width to your pulley groove width. Common widths are 6mm (≈1/4"), 10mm (≈3/8"), 15mm (≈19/32"), 20mm (≈25/32"), 25mm (≈1"), and 30mm (≈1-3/16"). When in doubt, measure the pulley flange-to-flange distance and select the closest standard width. A belt that is too narrow will track poorly; one that is too wide will bind against the flanges.

Standard profiles (3M, 5M, 8M) use a trapezoidal tooth form. The 'S' series (S3M, S5M, S8M) uses a curvilinear tooth profile that generally offers lower backlash and quieter operation at comparable loads. The two series are not interchangeable — match the profile exactly to your existing pulleys.

Load capacity depends on the pitch, width, and number of teeth in mesh. Wider belts and larger pitches (e.g., 8M vs. 3M) typically handle higher torque. As a general guide, wider and coarser-pitch belts are used in heavier-duty automation, while 2GT and 3M belts are typically used in lighter-load 3D printing and small CNC applications. For precise load ratings, contact us to confirm suitability for your application.

Polyurethane timing belts generally offer good resistance to oils, greases, and moderate moisture — better than standard neoprene rubber belts in many cases. They are not typically rated for continuous submersion or prolonged UV exposure. For outdoor or high-humidity applications, contact us to verify suitability before ordering.

Yes. The metric profiles (2GT, S2M, 3M, S3M, 5M, S5M, 8M, S8M, T5, T10) are compatible with standard metric timing pulleys of the same pitch designation. The imperial profiles (XL, MXL, L, H) follow ANSI/RMA standards and fit corresponding inch-pitch pulleys. Always verify that both the pitch and tooth form (trapezoidal vs. curvilinear) match your pulley before ordering.

2GT and GT2 refer to the same 2mm pitch Gates GT2 curvilinear tooth profile. The two designations are used interchangeably across suppliers and machine documentation. Both are compatible with GT2 pulleys widely used in FDM 3D printers (Ender, Voron, Prusa, etc.) and small CNC machines.

Yes — that is the primary advantage of an open-end format. The belt can be cut to any required length with a sharp utility blade or heavy-duty scissors. The steel wire core can be trimmed with wire cutters. Use a matching clamping plate (available as a variant in this listing) to anchor the cut ends to your carriage or bracket.

Timing belt clamping plates anchor the cut ends of an open-end belt to a carriage, bracket, or linear actuator frame. If your application uses a fixed-end linear drive — such as a CNC gantry, 3D printer axis, or linear slide — you will typically need a clamping plate at each end of the belt run. Select the "Timing Belt Clamping Plate" type in the variant options and choose the model that matches your belt profile and width.