NBR Flat Cable[3]

Updated: 2026-10-20

Overview

Acrylonitrile Butadiene Rubber (NBR) flat cables, known for their oil-resistant properties, are engineered for industrial applications where standard cables fail. The flattened design optimizes space in tight installations while maintaining flexibility. Made with NBR jackets and multi-strand copper conductors, these cables withstand exposure to oils, coolants, and mechanical stress. Widely used in CNC machines, robotic arms, and automotive assembly lines, their design ensures minimal tangling and ease of routing. The cables comply with international standards like UL and RoHS, ensuring reliability in B2B transactions.

Structure and Working Principle

NBR flat cables consist of tinned copper conductors arranged in parallel, insulated with NBR or hybrid rubber blends for enhanced durability. The flat geometry reduces electromagnetic interference (EMI) and allows efficient heat dissipation during operation. The NBR jacket’s polar nature provides resistance to hydrocarbons, while the conductor’s flexibility (often rated for >5 million bend cycles) ensures longevity in dynamic applications. Shielding variants (e.g., foil or braided) are available for sensitive signal transmission.

Key Features

Oil resistance is the standout feature, with NBR content (typically 18–50%) dictating performance in harsh chemical environments. The cables also resist cracking, ozone, and moisture ingress. Flat cables offer space efficiency, with thicknesses ranging from 1.5–8mm. Custom core counts (2–60 cores) and colors (per DIN 47100) simplify installation and maintenance. Temperature ratings (-40°C to +105°C) make them suitable for outdoor or unheated facilities.

Application Areas

Primary applications include food processing machinery (sanitary washdown environments), hydraulic systems in construction equipment, and automated warehouses where cables endure constant flexing. In B2B settings, suppliers often provide pre-terminated versions with industrial connectors (e.g., M12 or AMP) for plug-and-play integration. High-flex versions are used in 3D printers and robotic welders, where movement cycles exceed 1 million per year.

Maintenance and Precautions

Regular inspections for jacket cracks or conductor exposure are recommended, especially in high-flex zones. Use cable carriers (e.g., igus chains) to reduce abrasion in dynamic setups. Avoid direct sunlight exposure unless UV-stabilized variants are selected. For oil submersion, specify high-percentage NBR jackets (≥35%) and ensure compatibility with specific oil types (e.g., mineral vs. synthetic).

B2B Procurement Guide

Industrial buyers should request technical datasheets verifying oil resistance (tested per ASTM D471), bend radius (usually 5–10x cable height), and flame ratings (e.g., UL 94HB). Bulk purchases (500+ meters) often reduce costs by 15–30%. Lead times vary; Chinese manufacturers typically deliver in 4–6 weeks, while EU stocks provide faster turnaround. Specify needing RoHS/REACH compliance documentation for EU imports.