S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)
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S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)

S5M Timing Belt 20mm Wide – Closed Loop Rubber Synchronous Belt, 5mm Pitch (180mm–4000mm)

HomeDIYer
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By HomeDIYer®

Price:
$17.11 USD
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In stock (500 units), ready to be shipped

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Description

 

S5M Closed-Loop Rubber Timing Belt — Precise Synchronous Drive for CNC, 3D Printers & Automation

When a slipping or stretched drive belt throws off your CNC router's axis, ruins a 3D print mid-job, or causes positioning errors in your automation rig, the fix starts with the right synchronous belt. Engineers, makers, and machine builders who need repeatable, slip-free motion rely on S5M closed-loop timing belts to keep their drives locked in sync.

Each belt in this listing is a single closed-loop S5M rubber synchronous belt, 20mm (≈0.79") wide, with a 5mm pitch tooth profile. Perimeter options span from 180mm (≈7.1") to 4000mm (≈157.5"), covering a wide range of drive configurations. Select your required perimeter from the variant dropdown — each size ships as 1 piece.

Typical applications include CNC router X/Y axis drives, desktop 3D printer motion systems, laser engraver gantry belts, conveyor indexing drives, and light-duty power transmission in industrial automation. The trapezoidal S5M tooth profile provides positive engagement with matching S5M pulleys, making it a dependable choice for closed-loop synchronous belt drive replacement or new builds.

ℹ️ Compatibility Note: These belts use the S5M trapezoidal tooth profile (5mm pitch). They are not interchangeable with HTD 5M (curvilinear profile) pulleys. Verify your pulley tooth form before ordering. Belt width is 20mm — use with pulleys rated for 20mm or wider.
⚠️ Size Tip: Perimeter = total belt loop length. If you are replacing an existing belt, measure the old belt's outer circumference or check your machine's documentation for the belt part number. When in doubt, contact us to confirm before ordering.

✅ Key Features of These S5M Closed-Loop Rubber Timing Belts

  • ⚙️5mm S5M Trapezoidal Tooth Profile — Positive tooth engagement with S5M pulleys eliminates slip, making this belt suitable for CNC synchronous belt drive and precision positioning applications.
  • 📏138 Perimeter Sizes Available — From 180mm (≈7.1") to 4000mm (≈157.5"), covering a broad range of machine configurations without custom cutting or splicing.
  • 🔁Closed-Loop Construction — Seamless loop design eliminates the weak point of a splice joint, providing consistent tension distribution around the full belt path.
  • 🧱Rubber Body with Fiber Reinforcement — The rubber compound offers flexibility across a range of operating temperatures, while internal tensile cords generally resist elongation under load in typical drive applications.
  • 📐20mm Consistent Belt Width — Uniform 20mm width across all perimeter variants ensures compatibility with standard S5M pulley flanges used in 3D printer belt replacement and CNC drive systems.
  • 🔧Drop-In Replacement Geometry — S5M pitch and width dimensions follow established standards, making these belts a straightforward closed-loop synchronous belt replacement for worn or broken drive belts.

📐 Technical Specifications — S5M Rubber Timing Belt

Belt Type Closed-Loop Synchronous Timing Belt
Tooth Profile S5M (Trapezoidal, 5mm pitch)
Pitch 5mm (0.197")
Belt Width 20mm (≈0.79")
Perimeter Range 180mm (≈7.1") – 4000mm (≈157.5")
Teeth Count Range 36 teeth (180mm) – 800 teeth (4000mm)
Material Rubber with internal tensile cord reinforcement
Construction Seamless closed loop (no splice)
Compatible Pulley Standard S5M (trapezoidal) — not compatible with HTD 5M
Quantity per Order 1 piece per variant
Operating Temperature See variant options / Contact us to confirm
Max Tensile Load See variant options / Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right S5M belt perimeter for my machine?

Measure the center-to-center distance between your two pulleys, then calculate the belt path length: 2 × center distance + (π × pulley pitch diameter). Round to the nearest available perimeter in the variant list. For example, a 500mm perimeter belt is approximately 19.7". When in doubt, size up — a slightly longer belt is easier to tension than one that is too short. If you are replacing an existing belt, check the old belt's part number or measure its outer circumference directly.

What load can an S5M timing belt typically handle at 20mm width?

S5M belts at 20mm width can generally handle tensile loads in the range of 200–600 N depending on operating speed, pulley diameter, and wrap angle. These figures are typical for this belt class — for exact load ratings specific to your drive, consult your machine's engineering documentation or contact us to confirm suitability.

Can this belt be used outdoors or in wet/oily environments?

The rubber compound in S5M belts generally offers moderate resistance to moisture and mild oils. Prolonged exposure to UV radiation, ozone, or harsh chemicals can degrade the belt over time. For outdoor installations or wash-down environments, a polyurethane (PU) belt variant is typically more suitable. Contact us to discuss your environment before ordering.

What pulley profile is compatible with this belt?

This belt uses the S5M trapezoidal tooth profile with a 5mm pitch. It requires S5M-profile pulleys. Note that HTD 5M pulleys also have a 5mm pitch but use a curvilinear (rounded) tooth — these two profiles are not interchangeable. Always verify your pulley tooth form matches S5M before ordering.

How do I convert the perimeter from mm to inches?

Divide the perimeter in mm by 25.4 to get inches. Quick reference examples:

  • 180mm ÷ 25.4 ≈ 7.1"
  • 300mm ÷ 25.4 ≈ 11.8"
  • 500mm ÷ 25.4 ≈ 19.7"
  • 1000mm ÷ 25.4 ≈ 39.4"
  • 2000mm ÷ 25.4 ≈ 78.7"

All variant perimeters are listed in mm in the product options above.

Is S5M the same as HTD 5M? Can I use them interchangeably?

No — S5M and HTD 5M both have a 5mm pitch but use different tooth profiles. S5M has a trapezoidal tooth shape; HTD 5M has a curvilinear (rounded) tooth. Mixing belt and pulley profiles causes poor engagement, accelerated wear, and potential drive failure. Always match belt and pulley to the same profile standard.

What belt width is this, and are other widths available?

This listing covers the 20mm width variant of the S5M timing belt. Other widths (such as 10mm, 15mm, or 25mm) may be available in separate listings or on request. Contact us with your required perimeter and width and we will check availability for you.

🛒 Select your perimeter size above, then add to cart — ships from our US warehouse.

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