Published: 2026-09-10
Product Introduction
Shanghai Suoqi Wire & Cable Co., Ltd. has launched a series of polyurethane cables, using polyurethane (PUR) as the sheath material. It is specially designed for harsh conditions involving frequent movement, dragging, winding, and contact with oil stains and wear. It is widely used in port machinery, mining equipment, CNC machine tools, automated logistics, and outdoor engineering equipment. Polyurethane sheaths combine the flexibility of rubber with the strength of plastic, excelling in wear resistance, oil resistance, tear resistance, and low-temperature resistance. They are a long-lasting alternative to ordinary rubber sheaths and support customization by cross-section, core count, shielding, and tensile structures.
Operating Condition Pain Point Analysis
The value of polyurethane cables comes from the high loss rate of ordinary cables in these scenarios. Second, mechanical wear failure. Mobile device cables are in long-term friction with the ground, tracks, and drag chains, and ordinary rubber sheaths are easily worn through, exposing the core wires, which quickly leads to short circuits. Third, swelling due to oil contamination. Long-term contact with machine tool cutting fluid, hydraulic oil, and lubricating oil can cause ordinary sheaths to swell, soften, crack, and powder, causing insulation performance to drop sharply. Fourth, brittleness at low temperatures. In northern winters or cold storage environments, ordinary rubber sheaths harden and become brittle, cracking directly when bent. Fifth, tear and tensile damage. Under dragging conditions, cables bear significant pulling force; if the sheath’s tear resistance is insufficient, it can be ripped open, causing the core wires to break under stress. Sixth, coiling fatigue. With repeated winding and unwinding on drums and reels, the sheath repeatedly bends, developing cracks that gradually expand.
Product Technology Analysis
From the perspective of raw material selection, the polyurethane cable sheath uses thermoplastic polyurethane elastomer, with the soft and hard segments in its molecular structure forming microphase separation, giving it both high elasticity and high strength. Compared with ordinary rubber sheaths, polyurethane's wear resistance can be several times higher, it has excellent resistance to mineral oil and hydraulic oil, and has a low embrittlement temperature, maintaining flexibility even in environments of minus thirty to forty degrees Celsius. The conductor uses multi-stranded fine twisted soft copper wires, with a short lay length and high flexibility, combined with tensile elements (such as aramid yarn or galvanized steel wire) to withstand pulling forces. The insulation layer is made of oil- and heat-resistant materials, forming double protection together with the sheath.
From the perspective of the cable manufacturing process, the conductor is stranded using a small pitch compounding structure to ensure dynamic bending life; the tensile elements are placed at the center of the cable core or distributed symmetrically so that the tensile force is borne by the reinforcing elements rather than the conductor. During cabling, the core wires are twisted together at the optimal pitch, and padding and wrapping are added when necessary to ensure roundness. The sheath is extruded using an extrusion process, with the polyurethane tightly bonded to the cable core to prevent delamination; the extrusion temperature and cooling gradient are precisely controlled to ensure a dense, pore-free, smooth, and wear-resistant sheath. Before leaving the factory, each batch undergoes abrasion, oil resistance, low-temperature bending, and tensile tests to ensure compliance with mobile operation requirements.
Applicable scenarios
Port machinery: shore cranes, yard cranes, and cargo handling equipment winding power supply and signals
Mining equipment: mobile power supply for excavation machinery and conveyor equipment
CNC Machine Tools: Drag Chains and Moving Connections in a Cutting Fluid Environment
Automated logistics: mobile cables for stacker cranes, AGVs, and conveyor lines
Outdoor Engineering: Mobile Power Supply for Open-air Construction Machinery and Lifting Equipment
Cold Storage Cold Chain: Mobile Device Connectivity in Low-Temperature Environments
Core Product Advantages
Polyurethane sheath: wear-resistant, oil-resistant, tear-resistant, with a lifespan far exceeding ordinary rubber
Low-temperature flexibility: Does not crack in severe cold and refrigerated environments
Tensile structure: built-in reinforcing elements, suitable for pulling and winding
Finely stranded flexible conductor: long dynamic bending life, not easy to break
Non-standard customization: Supports customization by cross-section, number of cores, and shielding, directly supplied from the source factory
A brief introduction to e-commerce
Shanghai Suoqi Polyurethane Cables use PUR polyurethane jackets, which are wear-resistant, oil-resistant, and tear-resistant, remaining flexible even in low-temperature environments. Multi-stranded fine twisted soft copper conductors combined with built-in tensile elements are suitable for dragging, coiling, and drag chain reciprocating movements. Suitable for port machinery, mining equipment, CNC machine tools, and automated logistics. Non-standard customization is supported. Direct supply from the source manufacturer. For more details, please call 13311756197.
About Shanghai Suoqi
Shanghai Suoqi Electric Wire & Cable Co., Ltd. is a specialized cable enterprise focusing on the research and development, design, production, and sales of special flexible cables. The company's products cover a series including reel cables, flat cables, drag chain cables, encoder cables, polyurethane cables, seawater-resistant cables, seawater-resistant network cables, and high-altitude vehicle cables, which are widely used in ports machinery, mining, industrial automation, marine engineering, and other fields. For more product information or inquiries, please call 13311756197 (same number on WeChat).