Open Synchronous Timing Belt — 2GT, 3M, MXL, XL & 5M Profiles for Precision Linear Motion
When a slipping or stretched belt throws off your print quality, ruins a CNC cut, or stalls a robotic axis, the root cause is almost always the wrong belt material or profile for the job. Engineers, makers, and machine builders who need reliable open synchronous timing belt stock — cut to the exact length their build demands — need a single source that covers every common pitch, width, and material without compromise.
This listing offers open-end synchronous timing belts in five profiles: 2GT (2mm pitch), 3M (3mm pitch), MXL (2.032mm pitch), XL (5.08mm pitch), and 5M (5mm pitch). Available widths are 6mm (≈1/4"), 10mm (≈3/8"), and 15mm (≈19/32"). Lengths run from 1M (≈39.4") to 10M (≈393.7"). Material options include rubber (black), PU+Steel wire (black), PU+White, PU+White+Green cloth, and TPU+Kevlar — each suited to different load, stretch, and environmental requirements.
Typical applications include 3D printer X/Y axis drives (2GT 6mm is the go-to for Ender, Prusa, and Voron builds), CNC router and laser cutter gantry systems (10mm and 15mm widths in 3M or XL pitch), and robotics and automation linear stages where TPU+Kevlar open timing belt stock delivers the low-elongation performance that stepper-driven systems demand.
ℹ️ Compatibility Note: These are open-end (non-looped) belts sold by the meter. They are not closed-loop belts. Verify your pulley pitch, flange width, and required length before ordering. 2GT profile is dimensionally compatible with GT2 pulleys.
✅ Key Features of These Open Synchronous Timing Belts
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📐Five Pitch Profiles in One Listing — 2GT, 3M, MXL, XL, and 5M profiles cover the most common open timing belt applications from desktop 3D printers to industrial CNC gantries, so you can standardize sourcing across your entire build.
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🧵Multiple Material Options — Choose rubber for flexible, cost-effective 3D printer belt replacement; PU+Steel wire for reduced stretch in CNC drives; or TPU+Kevlar open timing belt for maximum tensile strength and abrasion resistance in demanding automation applications.
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📏Three Width Options — 6mm, 10mm, 15mm — Match the belt width to your pulley flange exactly. The 6mm (≈1/4") width suits most desktop printers; 10mm (≈3/8") fits mid-size CNC routers; 15mm (≈19/32") handles higher-torque linear motion stages.
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🔄Open-End Stock Cut to Length — Sold in 1M, 2M, 3M, 5M, and 10M lengths, these open synchronous belts let you cut exactly what your machine needs — no waste, no splicing closed loops, no minimum order headaches.
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🏭Consistent Tooth Geometry — Uniform tooth pitch and profile across the full belt length ensures smooth meshing with matching pulleys, reducing backlash and positional error in stepper-driven linear motion systems.
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🌡️Material-Matched for Environment — PU variants resist oils and moisture better than standard rubber; the PU+White and PU+White+Green cloth options suit environments where surface cleanliness or color coding is required, such as food-adjacent or cleanroom-style enclosures.
📐 Technical Specifications — Open Synchronous Timing Belt
| Belt Type |
Open-end synchronous timing belt (non-looped) |
| Available Profiles |
2GT (2mm pitch), 3M (3mm pitch), MXL (2.032mm pitch), XL (5.08mm pitch), 5M (5mm pitch) |
| Available Widths |
6mm (≈1/4"), 10mm (≈3/8"), 15mm (≈19/32") |
| Available Lengths |
1M (≈39.4"), 2M (≈78.7"), 3M (≈118.1"), 5M (≈196.9"), 10M (≈393.7") |
| Materials |
Rubber & Black; PU + Steel Wire & Black; PU & White; PU & White + Green Cloth; TPU + Kevlar |
| Tooth Profile Compatibility |
2GT ↔ GT2 pulleys; MXL, XL, 3M, 5M require matching-pitch pulleys |
| Tensile Cord |
Steel wire (PU+Steel wire variants); Kevlar fiber (TPU+Kevlar variant); See variant options (Rubber/PU) |
| Color |
Black (Rubber & PU+Steel wire); White (PU & White, PU+White+Green cloth); Black (TPU+Kevlar) |
| Typical Applications |
3D printer X/Y axis, CNC router gantry, laser cutter, robotics linear stage, automation conveyor |
| Loop Type |
Open-end (linear stock) — not a closed loop |
| Country of Origin |
Contact us to confirm |
⚠️ Before You Order: Confirm your pulley's tooth profile, flange width, and required belt length. Open-end belts cannot be returned once cut. If you are unsure which profile fits your machine, contact us with your pulley part number.
❓ Frequently Asked Questions
How do I choose the right belt length?
Measure the total travel distance of your axis and add extra for routing around pulleys and tensioners. As a general rule, order at least 10–15% more than your minimum measured length. Available lengths are 1M (≈39.4"), 2M (≈78.7"), 3M (≈118.1"), 5M (≈196.9"), and 10M (≈393.7").
What profile should I choose — 2GT, 3M, MXL, XL, or 5M?
Match the belt profile to your pulley teeth profile. 2GT (2mm pitch) is the standard for most desktop 3D printers (e.g., Ender, Prusa, Voron). MXL (2.032mm pitch) and XL (5.08mm pitch) are common in older CNC and automation equipment. 3M (3mm pitch) and 5M (5mm pitch) are typically used in higher-torque or larger-format machines.
What is the load capacity of these timing belts?
Load capacity varies by material and width. Rubber belts are generally suited for light-to-medium loads in 3D printers and small CNC machines. PU+Steel wire and TPU+Kevlar variants offer higher tensile strength and are typically recommended for applications requiring greater rigidity and reduced stretch under load. For specific load ratings, contact us to confirm.
Can these belts be used outdoors or in humid environments?
Rubber belts are generally suitable for indoor use and may degrade with prolonged UV or moisture exposure. PU (polyurethane) variants offer better resistance to oils, moisture, and mild chemicals, making them more appropriate for semi-industrial or enclosed outdoor environments. For harsh outdoor conditions, contact us to confirm suitability.
Are these open-end belts compatible with standard GT2 pulleys?
Yes — the 2GT profile is dimensionally compatible with GT2 pulleys commonly used in 3D printers and laser cutters. Always verify the tooth count and bore diameter of your pulley before ordering. MXL, XL, 3M, and 5M profiles require matching pulleys of the same pitch.
What width should I select for my machine?
Width selection should match your pulley flange width. 6mm (≈1/4") is standard for most desktop 3D printers. 10mm (≈3/8") is common in mid-size CNC routers and laser cutters. 15mm (≈19/32") is typically used in higher-torque applications such as larger CNC machines or industrial automation. Check your pulley specifications before ordering.
What is the difference between Rubber, PU+Steel wire, TPU+Kevlar, and PU+White options?
Rubber belts are flexible and cost-effective for standard 3D printing. PU+Steel wire belts offer lower stretch and higher tensile strength for CNC and automation. TPU+Kevlar belts combine flexibility with excellent abrasion resistance and minimal elongation, suited for precision motion. PU+White and PU+White+Green cloth variants are often used in food-adjacent or cleanroom-style environments where color coding or surface cleanliness matters.
🛒 Select your profile, width, material, and length above, then add to cart — ships from our US warehouse.
