Open End Timing Belt in TPU + Aramid Fiber — Precision Power Transmission for Makers, Engineers & Builders
When a slipping or worn timing belt brings your CNC router, 3D printer, conveyor, or linear actuator to a halt, finding the right open end timing belt in the exact length and profile you need shouldn't be another obstacle. This open end timing belt is designed for engineers, hobbyists, and repair technicians who need a reliable, cut-to-length solution without being locked into fixed loop sizes.
Each meter of belt is constructed from a TPU (thermoplastic polyurethane) body reinforced with an aramid fiber tension cord — a combination that delivers low stretch, high tensile strength, and resistance to oils and moisture. Available profiles include MXL, XL, 3M, 5M, and 2GT, with widths ranging from 6mm (≈1/4") to 25mm (≈1"). Order by the meter in quantities from 1 to 20 meters to match your exact application.
Typical use cases include 3D printer belt replacement (2GT 6mm and 10mm), CNC machine linear drive systems (XL, 3M, 5M profiles), conveyor and automation equipment (3M and 5M wide belts), and robotics and DIY motion control projects where a custom-length open end timing belt is required.
ℹ️ Compatibility Note: Match your belt profile (MXL / XL / 3M / 5M / 2GT) exactly to your pulley tooth profile. Belt width should equal or slightly exceed your pulley face width. If you cannot identify your current belt spec, measure tooth pitch and compare to standard values before ordering.
✅ Key Features of These Open End Timing Belts
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🔩Aramid Fiber Tension Cord — Provides low elongation under load, maintaining accurate positioning in CNC timing belt drives and linear motion systems where belt stretch causes positioning errors.
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🧱TPU Body Construction — Thermoplastic polyurethane resists oils, moisture, and mild chemicals, making this open end timing belt suitable for light industrial and workshop environments.
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📐Five Profiles in One Listing — MXL, XL, 3M, 5M, and 2GT profiles available; select the profile that matches your existing pulley to ensure correct tooth engagement and power transmission.
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📏Sold by the Meter, Cut to Length — Order exactly what you need from 1 to 20 meters; eliminates waste and is ideal for custom conveyor belt replacement or long-run linear actuator builds.
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↔️Width Options from 6mm to 25mm — Narrower widths (6mm, 10mm) suit compact 3D printer and light-duty drives; wider belts (15mm, 20mm, 25mm) handle greater torque in heavier automation and robotics applications.
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✂️Clean-Cut Open End Design — Aramid cord construction holds cut ends without fraying, allowing field trimming with a utility knife and straightforward installation with standard belt clamps or lacing connectors.
⚠️ Spec Confirmation Recommended: Belt profile, width, and length must all match your application. Tooth pitch reference: MXL = 2.032mm, XL = 5.08mm, 3M = 3mm, 5M = 5mm, 2GT = 2mm. Check markings on your existing belt edge before ordering.
📐 Technical Specifications — Open End Timing Belt
| Belt Type |
Open End Timing Belt (cut-to-length) |
| Available Profiles |
MXL, XL, 3M, 5M, 2GT |
| Tooth Pitch — MXL |
2.032mm (0.080") |
| Tooth Pitch — XL |
5.08mm (0.200") |
| Tooth Pitch — 3M |
3.00mm (0.118") |
| Tooth Pitch — 5M |
5.00mm (0.197") |
| Tooth Pitch — 2GT |
2.00mm (0.079") |
| Available Widths |
6mm (≈1/4"), 10mm (≈3/8"), 15mm (≈19/32"), 20mm (≈25/32"), 25mm (≈1") |
| Available Lengths |
1, 2, 3, 4, 5, 8, 10, 20 meters (sold per meter) |
| Body Material |
TPU (Thermoplastic Polyurethane) |
| Tension Member |
Aramid Fiber Cord |
| Tooth Profile Type |
Trapezoidal (MXL, XL) / Curvilinear (3M, 5M, 2GT) |
| Operating Temperature |
Typically -20°C to +80°C (-4°F to +176°F) |
| Finish / Color |
See variant options |
| Joining Method |
Belt clamp or lacing connector (sold separately) |
| Country of Origin |
Contact us to confirm |
❓ Frequently Asked Questions
How do I choose the right belt length for my machine?
Measure the total belt path length in your drive system — typically the center-to-center distance between pulleys multiplied by 2, plus the circumference of both pulleys. For open-end belts sold by the meter, order that total length plus a cutting allowance of typically 50–100mm (2–4") to allow for trimming and clamping. When in doubt, order slightly more than you think you need.
Which belt profile do I need — MXL, XL, 3M, 5M, or 2GT?
The belt profile must match your pulley exactly. Check the markings printed on your existing belt's edge — the profile designation is generally stamped there. If the belt is unmarked, measure the tooth pitch (center of one tooth to center of the next): MXL = 2.032mm, XL = 5.08mm, 3M = 3mm, 5M = 5mm, 2GT = 2mm. The 2GT profile is widely used in 3D printers; XL and 3M are common in CNC and light industrial drives.
How strong is this belt — what load or torque can it handle?
The aramid fiber tension cord provides tensile strength generally superior to fiberglass-reinforced belts of the same profile. Wider belts and larger pitch profiles (5M, 3M) carry greater loads than narrow or fine-pitch options (MXL, 2GT). Exact rated tensile load varies by profile and width. For load-critical applications, contact us with your torque and speed requirements before ordering.
Can I use this belt outdoors or in a damp environment?
TPU offers good resistance to moisture, light oils, and mild chemicals — generally better than neoprene rubber belts in wet or oily conditions. It is not rated for continuous submersion or exposure to strong solvents. For light outdoor or workshop use, TPU timing belts are typically a suitable choice. Verify your specific environmental conditions before use in demanding outdoor applications.
Is the 2GT profile compatible with GT2 pulleys used in 3D printers?
Yes — the 2GT profile is dimensionally compatible with GT2 pulleys (2mm pitch, curvilinear tooth form) used in most desktop 3D printers including Ender, Prusa, Voron, and similar platforms. The 6mm and 10mm widths are the most common for 3D printer X/Y axis drives. Always confirm your pulley's tooth count and bore size separately, as this listing covers the belt only.
How do I cut and terminate an open-end timing belt?
Cut the belt to length using sharp scissors or a utility knife against a metal straight edge. The aramid cord construction generally holds cut ends cleanly without fraying. To terminate, use a compatible belt clamp or lacing connector matched to your belt width and profile — these are available separately. Avoid bending the belt sharply at the cut end during installation.
What is the operating temperature range of this TPU timing belt?
TPU timing belts typically operate reliably between approximately -20°C and +80°C (-4°F to +176°F). Performance may degrade at sustained temperatures above this range. For high-temperature environments such as enclosed enclosures or near heat sources, contact us to confirm suitability before ordering.
🛒 Select your belt model and length above, then add to cart — ships from our US warehouse.
