PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm
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PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mmPU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm

PU Round Belt – Polyurethane Close Loop Drive Belt | 4mm, 5mm, 6mm, 8mm, 10mm

HomeDIYer
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By HomeDIYer®

Price:
$2.79 USD
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In stock (500 units), ready to be shipped

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Description

 

PU Round Belt — Seamless Polyurethane Close Loop Drive Belt for Lathes & Industrial Machinery

When a worn or snapped drive belt brings your lathe, woodworking machine, or conveyor to a halt, finding the right replacement fast matters. Machinists, workshop owners, and maintenance technicians who rely on round-groove pulley systems need a belt that installs without splicing, runs quietly, and holds tension through long production cycles. These polyurethane round drive belts are designed exactly for that job.

Each belt is a seamless close-loop construction made from solid green polyurethane (PU), available in wire diameters of 4mm, 5mm, 6mm, 8mm, and 10mm, with circumferences ranging from 150mm (≈5.9") to 1200mm (≈47.2"). Sold individually (1 Pcs) or in value packs (5 Pcs) for maintenance stock. The solid round cross-section seats cleanly into standard round-groove pulleys without alignment issues.

Typical applications include small metal lathes and wood lathes requiring a quiet round belt replacement, textile and sewing machinery drives, light conveyor systems, and general-purpose industrial power transmission where a flexible polyurethane drive belt is specified. The oil-resistant PU material also makes these a practical choice for machine shop environments where coolant splash is common.

🔵 Compatibility Note: These belts fit standard round-groove pulleys. Match the belt diameter (4–10mm) to your pulley groove diameter. Verify the circumference against your machine's belt path before ordering. Not compatible with V-groove or flat-belt pulleys.

✅ Key Features of These PU Polyurethane Round Drive Belts

  • 🔗Seamless Close Loop — Pre-formed as a continuous loop with no joint or splice point, eliminating the weak spot that causes most belt failures in spliced alternatives.
  • 🟢Solid Polyurethane Construction — Solid PU cross-section provides consistent flexibility and grip across the full circumference, resisting the cracking and hardening common in rubber belts over time.
  • 📐Wide Size Range — Available in five wire diameters (4mm–10mm) and circumferences from 150mm to 1200mm, covering a broad range of lathe round belt replacement and industrial drive applications.
  • 🛢️Oil & Chemical Resistance — Polyurethane material offers general resistance to oils, mild solvents, and moisture, making these belts suitable for machine shop and light industrial environments.
  • 🔇Low-Noise Operation — The round profile running in a matched groove produces smooth, low-vibration power transmission — a key advantage for precision woodworking machinery and light lathes.
  • 📦Single or Multi-Pack Options — Order 1 Pcs for an immediate replacement or 5 Pcs for maintenance stock at a lower per-unit cost — ideal for workshops running multiple machines on the same belt size.

📐 Technical Specifications — PU Polyurethane Round Drive Belt

Material Solid Polyurethane (PU)
Color Green
Belt Profile Round (circular cross-section)
Loop Type Seamless close loop (no splice)
Wire Diameter Options 4mm, 5mm, 6mm, 8mm, 10mm
Circumference Range 150mm (≈5.9") – 1200mm (≈47.2")
Pack Quantity 1 Pcs or 5 Pcs (select above)
Pulley Compatibility Standard round-groove pulleys
Typical Applications Lathes, woodworking machinery, textile drives, light conveyors
Temperature Range See variant options / Contact us to confirm
Tensile Strength Contact us to confirm for specific diameter
Country of Origin Contact us to confirm
⚠️ Size Tip: Circumference = total loop path length around all pulleys. Use a flexible tape or string to measure your machine's belt path, then select the closest size. When between sizes, generally size down for a snug fit — PU has slight stretch tolerance.

❓ Frequently Asked Questions

How do I choose the right wire circumference for my machine?

Measure the total loop path around all pulleys with a flexible tape or string, then select the closest circumference option. For example, 300mm circumference is approximately 11.8", and 600mm is approximately 23.6". When in doubt, size down slightly — polyurethane round belts generally have some stretch tolerance and a snug fit improves power transfer.

What wire diameter should I choose?

Match the diameter to your pulley groove size. Typically: 4mm belts suit light-duty spindles and small lathes; 5–6mm suit medium-duty woodworking and textile machinery; 8–10mm suit heavier industrial drives. Check your machine's manual or measure the existing belt with calipers to confirm the correct diameter before ordering.

How much load can these polyurethane round belts handle?

Load capacity depends on diameter and circumference. Generally, 4mm belts are suited for light-duty applications, while 8–10mm belts can handle moderate industrial loads. For precise tensile ratings, contact us to confirm — we do not recommend exceeding the design load of your specific machine.

Are these belts suitable for outdoor or wet environments?

Polyurethane is generally resistant to oils, mild chemicals, and moisture, making these belts suitable for light-duty indoor industrial environments. They are not typically rated for prolonged UV exposure or fully outdoor use. For outdoor applications, contact us to confirm suitability for your specific conditions.

What machines are these PU round belts compatible with?

These close-loop polyurethane round belts are commonly used in lathes, woodworking machinery, textile equipment, conveyor systems, and light industrial drives. They fit standard round-groove pulleys. Always verify your pulley groove diameter matches the belt diameter before ordering — they are not compatible with V-groove or flat-belt pulley systems.

Can I join or splice these belts to a custom length?

These belts are supplied as pre-formed seamless close loops — no splicing or joining is required or recommended. The seamless construction is a key strength of this design. Select the circumference closest to your required loop length from the variant options above.

What is the difference between buying 1 Pcs vs 5 Pcs?

Both options are the same belt — the 5 Pcs pack simply provides five identical belts at a lower per-unit cost, ideal for maintenance stock or multi-machine setups. Select your preferred quantity in the Amount (Pcs) option above.

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

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