PU Wire Saw Pulley
Description
PU Wire Saw Pulley — High-Performance Solution for Industrial Wire Sawing
The PU Wire Saw Pulley, a crucial part designed for tough stone cutting, concrete demolition, and silicon wafer slicing applications, is delivered by Laizhou Jinfuen Machinery Co., Ltd. with more than 30 years of production experience. Compared to conventional rubber substitutes, our pulleys' unique Shore 95A polyurethane compound increases service life by three to five times. Each pulley guarantees ideal wire alignment and low vibration thanks to its precise V-groove design, which supports wire diameters ranging from 0.35mm to 1mm. Even during high-tension operations surpassing 30 m/s cutting rates, the aircraft-grade aluminum alloy core and our unique cold-bonding process ensure zero delamination. Factory-direct supply provides outstanding cost-performance for quarrying and engineering operations globally by doing away with middlemen.

What Makes Our PU Wire Saw Pulley Superior?
Important problems in industrial cutting are resolved by the polyurethane structure.
Conventional rubber pulleys deteriorate quickly in the presence of metal shavings and granite dust. By preserving structural integrity in abrasive settings, our PU Wire Saw Pulley lowers replacement frequency and downtime.
The PU layer and metal core form a molecular-level bind through the cold-bonding process. This exclusive method guarantees that the elastomer never peels under centrifugal forces, which is a typical point of failure in subpar products.
Continuous exposure to water-based coolants is tolerated by hydrolysis-resistant formulations. Whether slicing silicon in regulated cleanroom settings or cutting marble in damp quarries, your pulley operates reliably.

Technical Specifications
| Parameter | Specification |
|---|---|
| Material Hardness | Shore 95A |
| Core Material | Aircraft-Grade Aluminum Alloy / Steel |
| Wire Diameter Range | 0.35mm – 1mm |
| Operating Speed | Up to 30–40 m/s |
| Temperature Resistance | -20°C to +80°C |
| Abrasion Resistance | 3–5× Standard Rubber |
| Bond Strength | Exceeds PU Tear Strength |
| Concentricity (TIR) | ±0.1mm |
| Load Capacity | High-Tension Applications |
| Compliance | DIN 53516, ASTM D412 |
| Model | Outer Diameter (mm) | Inner Diameter (mm) | Wheel Thickness(mm) | Number of Grooves | Groove Depth(mm) |
| 220/55 | 220 | 55 | 18/20 | 3‑4 | 2.5 |
| 250/55 | 250 | 55 | 18/20 | 3‑4 | 2.5 |
| 300/55 | 300 | 55 | 18/20 | 3‑4 | 2.5 |
| 350/55 | 350 | 55 | 18/20 | 3‑4 | 2.5 |
| 400/55 | 400 | 55 | 18/20 | 3‑4 | 2.5 |
| 450/55 | 450 | 55 | 18/20 | 3‑4 | 2.5 |
| 500/55 | 500 | 55 | 18/20 | 3‑4 | 3.5 |
Where You Need This Component
Granite and Marble Quarrying
Your cutting operations face extreme UV exposure and abrasive stone dust daily. The PU coating prevents diamond bead impact against the metal hub, maintaining precise wire alignment throughout extraction cycles.
Reinforced Concrete Demolition
Bridge decommissioning and structural dismantling generate irregular tension surges when wire encounters heavy rebar. Our pulleys dampen these shocks, preventing wire whiplash that leads to costly breakage.
Multi-Wire Silicon Slicing
Photovoltaic and semiconductor manufacturing demand micron-level precision. The multi-groove design provides exact pitch control and vibration-free rotation, ensuring wafer slicing yields meet your quality standards.
Ceramic and Special Material Processing
CNC wire saw applications benefit from superior traction and reduced rolling resistance, enabling cleaner cuts and extended consumable life.

Why Jinfuen Stands Apart
Proprietary Cold-Bonding Technology
Our exclusive adhesion process creates permanent PU-to-metal bonds that outperform mechanical fastening methods. You avoid the delamination failures common in competitor products.
Aircraft-Grade Core Construction
Lightweight yet robust aluminum alloy reduces rotational inertia while maintaining dimensional stability under thermal cycling.
100% Customization Capability
Whether you need specific groove profiles, custom diameters, or unique hardness ratings, our engineering team tailors solutions to your equipment specifications. MOQ starts at just 1 piece.
Cost-Effective Recovering Service
Instead of purchasing new units, our restoration service returns worn pulleys to OEM standards. You reduce capital expenditure while maintaining performance consistency across your equipment fleet.

Quality Assurance Process
Every pulley undergoes rigorous inspection before shipment.
Shore hardness testing verifies uniform elasticity across the circumference. Dimensional accuracy checks confirm V-groove geometry meets your wire specifications.
Pull-off testing validates bond integrity under simulated high-speed conditions. Dynamic balancing eliminates vibration sources that compromise cutting precision.
Abrasion resistance testing per DIN 53516 predicts field lifespan. You receive components proven to withstand your operational environment.
Frequently Asked Questions
Q: What wire diameters are compatible?
A: Standard pulleys fit wires from 0.35mm to 1mm. Custom groove profiles for special wire sizes are available on demand.
Q: How does PU compare to rubber in wet working conditions?
A: Polyurethane retains stable friction in water coolant environments, while rubber tends to lose grip easily, delivering steady cutting performance throughout operation.
Q: Can you produce pulleys matching competitors’ sizes?
A: Yes. Send us your current pulley technical drawings and dimensions, we can make direct replacement pulleys with upgraded material performance.
Q: What is the typical production lead time?
A: Standard stock models can be delivered in 10–15 days. Customized products take 20–30 days based on design complexity.
Q: Do you offer international shipping service?
A: Yes. We complete full export documents such as Certificate of Origin and Form E, and adopt reinforced anti-corrosion packaging for long-distance overseas transport.
Ready to Upgrade Your Cutting System?
Contact our team for free evaluation, ROI analysis, and PU Wire Saw Pulley solutions.
We'll assess your application requirements and recommend the optimal pulley configuration to reduce your total cost of ownership. Email us at sales@goldfenwiresaw.com to start your consultation today.
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