Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length
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Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to LengthOpen Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length

Open Timing Belt — 2GT / HTD-3M / HTD-5M / HTD-8M / STPD-S2M / XL, 6–40 mm Wide, Black, Cut to Length

HomeDIYer
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By HomeDIYer®

Price:
$2.92 USD
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In stock (500 units), ready to be shipped

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Description

 

Open Timing Belt for CNC & 3D Printers — Cut to Any Length, Multiple Profiles

When a motion system loses steps, skips, or stretches out of spec, the culprit is almost always the belt. Makers, CNC machinists, and machine builders who need a reliable open timing belt in an exact length — without paying for a full loop or a minimum-order reel — run into the same wall: most suppliers only sell closed loops or force bulk quantities. This listing solves that problem directly.

Each order is fulfilled as open (endless) timing belt cut to your selected length: 1 Meter (≈39.4"), 2 Meter (≈78.7"), 3 Meter (≈118.1"), 4 Meter (≈157.5"), or 5 Meter (≈196.9"). Belt profiles available are 2GT, HTD-3M, HTD-5M, HTD-8M, STPD-S2M, and XL. Widths range from 6 mm (≈1/4") to 40 mm (≈1-9/16"). The belt body is black rubber with fiberglass cord reinforcement — the standard construction for synchronous drive belts in this class.

Typical use cases include CoreXY and Cartesian 3D printer axis drives (2GT, 6–10 mm), DIY CNC router gantry systems (HTD-3M/5M, 10–20 mm), laser cutter motion rails (2GT or HTD-3M), and replacement drives on older US-spec machinery using XL-profile pulleys. The open format also suits custom conveyor and indexing table builds where a closed loop is impractical.

ℹ️ Compatibility note: Match the belt profile and width to your existing pulleys before ordering. 2GT belts fit GT2/2GT pulleys; HTD-3M/5M/8M fit HTD pulleys of the same pitch; STPD-S2M fits S2M pulleys; XL fits XL-profile pulleys. Mixing profiles will cause skipping or belt damage.
⚠️ Sizing tip: If you are unsure of your required length, measure your axis travel and add 10–15% for routing and tensioner adjustment. Open belt can be trimmed — order the next size up when in doubt.

✅ Key Features of These Open Timing Belts

  • 📐Six Profiles in One Listing — 2GT, HTD-3M, HTD-5M, HTD-8M, STPD-S2M, and XL profiles available, covering the most common synchronous drive belt standards used in CNC routers, 3D printers, and light industrial machinery.
  • ✂️Cut-to-Length Flexibility — Sold as open timing belt in 1 m to 5 m increments, so you get exactly what your build requires without leftover closed loops or minimum-reel waste.
  • 📏Wide Width Range — Available in 6, 10, 15, 20, 25, 30, and 40 mm widths to match everything from compact desktop 3D printer axes to wide-gantry CNC routing systems.
  • 🔩Fiberglass Cord Reinforcement — The tensile cord construction resists stretch under load, helping maintain positional accuracy in open-loop motion systems where belt elongation causes lost steps.
  • ⚙️Standard Tooth Geometry — Each profile matches the tooth form of its corresponding pulley standard (GT2, HTD, S2M, XL), ensuring proper mesh and consistent pitch across the belt's full length.
  • 🏭Ships from US Warehouse — Stocked domestically for faster delivery to US-based builders and repair shops, avoiding the extended lead times common with direct overseas sourcing.

📐 Technical Specifications — Open Timing Belt

Belt Type Open (endless) synchronous timing belt
Available Profiles 2GT, HTD-3M, HTD-5M, HTD-8M, STPD-S2M, XL
Pitch — 2GT 2 mm
Pitch — HTD-3M 3 mm
Pitch — HTD-5M 5 mm
Pitch — HTD-8M 8 mm
Pitch — STPD-S2M 2 mm (S2M trapezoidal)
Pitch — XL 5.08 mm (1/5", imperial trapezoidal)
Available Widths 6 mm (≈1/4"), 10 mm (≈3/8"), 15 mm (≈19/32"), 20 mm (≈25/32"), 25 mm (≈1"), 30 mm (≈1-3/16"), 40 mm (≈1-9/16")
Available Lengths 1 m (≈39.4"), 2 m (≈78.7"), 3 m (≈118.1"), 4 m (≈157.5"), 5 m (≈196.9")
Belt Color Black
Belt Material Rubber with fiberglass tensile cord (typical construction for this belt class)
Tooth Profile Curvilinear (HTD, 2GT) / Trapezoidal (XL, STPD-S2M) — see variant options
Compatible Pulleys Match profile: GT2/2GT, HTD, S2M, or XL pulleys of corresponding pitch and width
Tensile Strength See variant options / Contact us to confirm for specific load requirements
Operating Temperature Contact us to confirm for your specific environment

❓ Frequently Asked Questions

How do I choose the right length of open timing belt?

Measure the total travel distance of your axis and add enough extra for routing around idlers and tensioner adjustment — typically an extra 10–15% beyond the bare minimum run. For reference: 1 meter ≈ 39.4", 2 meters ≈ 78.7", 3 meters ≈ 118". When in doubt, order the next length up; open belt can always be trimmed cleanly with scissors or a utility knife.

What belt profile should I choose — 2GT, HTD-3M, HTD-5M, HTD-8M, STPD-S2M, or XL?

Profile selection depends on your pulley and the torque/speed requirements of your build. 2GT is the standard for most desktop 3D printers (CoreXY, Cartesian). HTD-3M suits light CNC and laser cutters. HTD-5M and HTD-8M handle progressively higher torque in larger CNC routers. STPD-S2M is a synchronous trapezoidal profile for S2M pulleys. XL is an imperial trapezoidal profile common in older or US-spec machinery. Always match the belt profile to your existing pulleys — mixing profiles causes skipping.

How much load can these timing belts handle?

Load capacity varies by profile and width. Generally, wider belts and larger-pitch profiles (HTD-8M vs. 2GT) carry higher tensile loads. For typical 3D printer motion systems, 2GT at 6–10 mm width is generally sufficient. For CNC routing with significant cutting forces, HTD-5M or HTD-8M at 15–40 mm width is typically recommended. Contact us if you have specific load or tensile strength requirements.

Can these belts be used outdoors or in humid environments?

These open timing belts are generally suited for indoor workshop and light industrial use. The rubber compound typically offers moderate resistance to oils and incidental moisture. Prolonged outdoor UV exposure or continuous water immersion may degrade the belt over time. For outdoor or washdown environments, contact us to confirm suitability before ordering.

Are these belts compatible with standard GT2, HTD, and XL pulleys?

Yes — each profile is designed to mesh with its corresponding standard pulley: 2GT belts with GT2/2GT pulleys, HTD-3M/5M/8M with HTD pulleys of the matching pitch, STPD-S2M with S2M pulleys, and XL with XL-profile pulleys. Always verify the tooth pitch and flange width of your pulley before ordering to ensure a proper fit.

How do I cut the open belt to the exact length I need?

Open timing belt cuts cleanly with sharp scissors, a utility knife, or a guillotine cutter. For the squarest cut, score across the belt teeth with a knife and snap. No special tools are required, and the belt does not fray after cutting. Cut on a flat surface for best results.

What width should I choose for my 3D printer or CNC router?

For desktop 3D printers, 6 mm (≈1/4") is the most common width for 2GT belts. For CNC routers, 10–20 mm is typical for light-duty machines, while 25–40 mm widths are used on heavier gantry systems. Check your existing belt width or pulley flange width to confirm the correct size before ordering.

🛒 Select your belt model, width, and length above, then add to cart — ships from our US warehouse.

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