PU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to Length
PU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to Length
PU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to Length
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PU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to LengthPU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to LengthPU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to Length

PU Round Belt — Polyurethane Drive Belt Cord, 2mm–15mm Dia, Cut to Length

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Beschreibung

 

PU Round Belt — Reliable Polyurethane Drive Belt Cord for Machines That Can't Afford Downtime

When a worn or snapped drive belt brings your sewing machine, lathe, or conveyor to a halt, finding the right replacement fast matters. This solid polyurethane round belt cord is stocked for DIYers, hobbyists, and small-shop machinists who need a dependable urethane drive belt without waiting on custom orders or minimum quantities.

Each listing covers a single continuous length of solid PU round belt cord, available in diameters from 2mm (≈5/64") to 15mm (≈19/32") and cut lengths of 1 metre (≈39"), 2 metres (≈79"), 3 metres (≈118"), 5 metres (≈197"), or 10 metres (≈394"). Select the diameter that matches your pulley groove and the length you need — no waste, no excess.

Typical applications include replacement drive belts for vintage and modern sewing machines, round-belt drives on wood lathes and metal lathes, light-duty conveyor belt systems in workshop or packaging environments, and power transmission in small appliances and precision instruments where a flexible polyurethane round drive belt is specified.

ℹ️ Compatibility Note: Designed for round-groove (U-groove) pulleys only. Not suitable for V-belt or flat-belt pulley profiles. Match the belt diameter to your pulley groove diameter for correct fit and power transfer.

✅ Key Features of These PU Round Drive Belt Cords

  • 🔵Solid Polyurethane Construction — Made from solid PU material throughout, offering consistent flexibility and resilience compared to hollow or rubber round belts in light-duty drive applications.
  • 📏Wide Diameter Range (2mm–15mm) — Covers the most common round-groove pulley sizes found in sewing machines, lathes, and small conveyor drives, reducing the need to source multiple suppliers.
  • ✂️Cut-to-Length Flexibility — Available in 1m, 2m, 3m, 5m, and 10m lengths so you order exactly what your belt path requires, with enough material for a clean splice joint.
  • 💧Oil and Moisture Resistance — Polyurethane generally resists light oils, coolants, and moisture better than natural rubber, making it suitable for workshop machinery environments where incidental fluid contact is common.
  • 🔄Splice-Ready Ends — The round cord profile is compatible with standard 45° hot-splice or PU adhesive joining methods, allowing you to create a continuous loop belt sized precisely for your machine.
  • ⚙️Low-Slip Drive Surface — The smooth, consistent PU surface maintains positive contact in round-groove pulleys, reducing slippage in precision drives such as sewing machine timing and lathe spindle applications.

📐 Technical Specifications — PU Round Drive Belt Cord

Material Solid Polyurethane (PU)
Belt Profile Round (circular cross-section)
Available Diameters 2mm (≈5/64"), 3mm (≈1/8"), 4mm (≈5/32"), 5mm (≈3/16"), 6mm (≈15/64"), 7mm (≈9/32"), 8mm (≈5/16"), 9mm (≈23/64"), 10mm (≈25/64"), 12mm (≈15/32"), 15mm (≈19/32")
Available Lengths 1m (≈39"), 2m (≈79"), 3m (≈118"), 5m (≈197"), 10m (≈394")
Pulley Compatibility Round-groove (U-groove) pulleys only
Joining Method Hot splice (heat weld) or PU adhesive — see variant options for length
Operating Temperature Typically -20°C to +80°C (-4°F to 176°F)
Chemical Resistance Generally resistant to light oils, water, and mild chemicals
Color / Finish See variant options / Contact us to confirm
Tensile Strength See variant options — varies by diameter
Country of Origin Contact us to confirm
Typical Applications Sewing machines, lathes, light conveyors, small appliance drives
⚠️ Sizing Tip: If you are unsure of your required diameter, measure the groove width at its deepest point on your pulley. The belt diameter should match this groove dimension for a snug, slip-resistant fit. When in doubt, contact us before ordering.

❓ Frequently Asked Questions

How do I choose the right diameter and length for my machine?

Measure the groove or pulley channel on your machine to determine the correct diameter — typically 2mm to 15mm for light-duty drives. For length, measure the belt path around all pulleys and add 5–10% for joining overlap. For example, if your belt path is 900mm (≈35.4"), order at least 1 metre to allow for a clean splice. When in doubt, order slightly longer and trim to fit.

What load or torque can a PU round belt handle?

Polyurethane round belts are generally suited for light-to-medium duty power transmission. Smaller diameters (2mm–5mm) are typically used for precision instruments and sewing machines, while larger diameters (8mm–15mm) can handle higher torque in lathes and conveyor drives. Contact us to confirm suitability for your specific load requirements.

Can these belts be used outdoors or in wet environments?

Polyurethane is generally resistant to moisture, oils, and mild chemicals, making it more suitable for damp or lightly oiled environments than rubber alternatives. However, prolonged UV exposure or immersion in harsh solvents may degrade performance over time. For outdoor or chemically aggressive applications, contact us to confirm compatibility.

Are these round belts compatible with standard V-groove or round-groove pulleys?

These belts are designed for round-groove (U-groove) pulleys. They are not intended for V-belt or flat-belt pulley profiles. Ensure your pulley groove diameter matches the belt diameter you select for proper seating and power transfer.

How do I join or connect the ends of the belt?

PU round belts can typically be joined using a hot-splice (heat welding) method or with a suitable polyurethane adhesive/cement. Cut both ends cleanly at a 45° angle for maximum bond area. A proper splice generally achieves near-full belt strength when done correctly. Joining tools and adhesives are sold separately.

Which machines commonly use PU round drive belts?

PU round belts are commonly used in sewing machines, sergers, vintage lathes, woodworking machinery, light conveyor systems, and small appliance drives. They are a popular replacement for worn rubber or leather round belts in older equipment where the original belt specification calls for a round-profile drive cord.

What is the operating temperature range for these belts?

Polyurethane round belts typically perform well in temperatures ranging from approximately -20°C (-4°F) to +80°C (176°F). Performance may degrade outside this range. Contact us to confirm if your application involves extreme temperatures or continuous high-heat exposure.

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

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