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Round Urethane Drive Belt — Rough Surface Green, 2mm to 18mm Diameter
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Round Urethane Drive Belt — Rough Surface Green, 2mm to 18mm Diameter
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Round Urethane Drive Belt — Rough Surface Green, 2mm to 18mm DiameterRound Urethane Drive Belt Reliable Grip for Conveyors, Lathes & DIY Machines When a worn or mismatched drive belt causes your lathe to slip, your conveyor to stall, or your workshop machine to lose speed under load, the fix starts with the right belt. Makers, machinists, and small shop operators need a round drive belt that holds tension, resists oil, and can be cut to any length on the bench without waiting weeks for a custom order. These round
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Round Urethane Drive Belt — Reliable Grip for Conveyors, Lathes & DIY Machines
When a worn or mismatched drive belt causes your lathe to slip, your conveyor to stall, or your workshop machine to lose speed under load, the fix starts with the right belt. Makers, machinists, and small-shop operators need a round drive belt that holds tension, resists oil, and can be cut to any length on the bench — without waiting weeks for a custom order.
These round urethane drive belts are available in diameters from 2mm (≈5/64") to 18mm (≈45/64") and in continuous lengths from 1 meter (≈3.3 ft) up to 200 meters (≈656 ft), so you cut exactly what your machine needs. The material is solid polyurethane with a rough (textured) surface finish in green, designed to seat firmly in round-bottom pulley grooves and deliver consistent grip across the full length of the belt path.
Typical applications include light-to-medium duty conveyor drives, benchtop and floor-standing lathes, drill presses, woodworking machines, and custom DIY power transmission builds where a flexible round urethane belt for machinery is the right solution. The rough surface texture makes these belts especially well-suited for variable-speed drives and any setup where slip-free torque transfer matters.
Compatibility Note: These belts are designed for round-bottom (U-groove) pulleys. They are not compatible with V-groove or flat-face pulleys. Match the belt diameter to your pulley groove diameter for proper seating. Sold as continuous length — cut to size on-site.
✅ Key Features of These Round Urethane Drive Belts
- Rough Surface for Slip-Free Grip — The textured green surface increases friction in the pulley groove, making this round urethane belt for machinery ideal for variable-speed lathes, conveyor drives, and drill presses where consistent torque transfer is critical.
- Wide Diameter Range (2mm–18mm) — Fourteen diameter options from 2mm (≈5/64") to 18mm (≈45/64") cover benchtop machines, floor-standing lathes, and custom power transmission builds without needing multiple suppliers.
- Cut-to-Length Flexibility (1–200 Meters) — Buy the exact length your project requires. Continuous urethane round belt stock eliminates waste and lets you splice a seamless joint on the bench with a standard heat-welding tool.
- Oil & Moisture Resistant Polyurethane — Solid urethane construction resists oils, mild chemicals, and humidity — a practical advantage in workshop and light industrial environments where lubricants are present near drive systems.
- Flexible & Fatigue-Resistant — Urethane maintains flexibility across a wide temperature range and resists cracking from repeated bending cycles, extending service life compared to rubber alternatives in small-pulley applications.
- Consistent Round Cross-Section — Uniform circular profile ensures even contact around the full pulley groove circumference, reducing vibration and noise in precision machines like lathes and milling attachments.
📐 Technical Specifications — Round Urethane Drive Belt
| Material | Solid polyurethane (urethane) |
|---|---|
| Surface Finish | Rough (textured) |
| Color | Green |
| Cross-Section | Round (circular) |
| Available Diameters | 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 15mm, 18mm |
| Diameter Range (Imperial) | ≈5/64" to ≈45/64" |
| Available Lengths | 1m, 2m, 3m, 5m, 10m, 25m, 50m, 100m, 200m |
| Pulley Groove Type | Round-bottom (U-groove) |
| Joining Method | Heat splice / urethane welding (tool sold separately) |
| Typical Application | Conveyor drives, lathes, drill presses, woodworking machines, DIY power transmission |
| Operating Temperature | See variant options |
| Tensile Strength | Contact us to confirm |
| Shore Hardness | Contact us to confirm |
Sizing Tip: If you are replacing an existing belt, measure the diameter of the belt itself (not the pulley), then select the matching size above. When in doubt between two sizes, choose the smaller diameter for a tighter fit in the groove.
❓ Frequently Asked Questions
How do I choose the right diameter and length for my machine?
Match the belt diameter to your pulley groove width — the belt should sit snugly in the groove without bottoming out. For length, measure the center-to-center distance between pulleys and calculate the belt path circumference. As a general rule, add 2–5% for pre-tension. Available diameters range from 2mm (≈5/64") to 18mm (≈45/64"); lengths from 1 to 200 meters let you cut exactly what you need.
What load or torque can these urethane belts handle?
Urethane round belts are generally suited for light-to-medium duty power transmission. Larger diameters (10–18mm) typically carry higher torque loads than smaller ones (2–5mm). For heavy-duty industrial applications, contact us to confirm suitability for your specific load requirements.
Are these belts suitable for outdoor or wet environments?
Urethane is inherently resistant to oils, mild chemicals, and moisture, making these belts generally suitable for damp or lightly oiled environments. However, prolonged UV exposure or immersion in harsh solvents may degrade performance over time. For outdoor installations, we recommend periodic inspection.
What pulley groove profile is compatible with round drive belts?
Round urethane belts are designed for round-bottom or U-groove pulleys. They are not compatible with V-groove or flat-face pulleys. The groove diameter should closely match the belt diameter — typically within 0.1–0.3mm — to ensure proper seating and grip.
How do I join or splice the belt after cutting to length?
Urethane round belts can be joined using a hot-knife heat splice or urethane belt welding tool. Cut both ends cleanly at 90°, heat the ends until tacky, then press firmly together and hold until cooled. This creates a nearly seamless joint. Mechanical connectors are also available as an alternative.
Which diameter should I choose for a lathe or woodworking machine?
For small benchtop lathes and woodworking machines, diameters of 4mm–8mm are most commonly used. Larger floor-standing machines may use 10mm–18mm belts. Always check your machine's manual or measure the existing belt diameter before ordering.
What does the rough surface finish do compared to a smooth belt?
The rough (textured) surface increases friction between the belt and pulley groove, reducing slip under load. This makes rough-surface belts preferable for applications where consistent grip is critical, such as conveyor drives, drill presses, and variable-speed lathes.
🛒 Select your diameter and length above, then add to cart — ships from our US warehouse.
Round Urethane Drive Belt — Rough Surface Green, 2mm to 18mm Diameter
Item no
:
61680609330
US$ 165.00
Pay in 4 interest-free payments of $41.25 Learn more
Min. order:
1piece
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- Free Standard Shipping on $100+ Orders to the USA.
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- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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