Our FRP Core Shaft (Composite Mandrel) is engineered to replace heavy steel or aluminum shafts in high-speed winding, slitting, and rewinding lines. Traditional metal shafts suffer from rust, corrosion, and gradual dynamic imbalance — leading to vibration, material waste, and machine downtime.
Made from continuous glass/carbon fiber reinforced epoxy resin via pultrusion or filament winding, our FRP core shaft offers 1/3 the weight of steel with equal or higher stiffness. The surface is corrosion-proof, non-magnetic, and requires no protective coating. With precision ground outer diameter (tolerance as low as 0.03mm) and dynamic balancing up to G2.5 (or higher), it ensures smooth operation even at line speeds exceeding 500 m/min. It is the ideal core shaft for air chucks, lug chucks, or mechanical chucks in paper, film, foil, textile, and battery separator production lines.
Брошюра о продукте Hebei Fortis Technology Co., Ltd
Product Advantages
Lightweight & Low Inertia – Only 30–40% weight of steel shaft. Reduces motor load, enables faster acceleration/deceleration, and saves energy by up to 20% in cyclic winding operations.
Rust & Corrosion Proof – Resists moisture, chemical solvents, and cleaning agents. Perfect for wet winding, cleanroom, and coastal environments. Never needs anti-rust oil.
High Dynamic Balance – Precision manufactured with dynamic balancing grade G2.5 (or G1.0 optional). Eliminates vibration at high RPM, protecting slitter blades and web tension control systems.
Excellent Stiffness-to-Weight Ratio – Flexural modulus up to 40 GPa (depending on fiber layup). No sagging even for long span (up to 6 meters) core shafts.
Customizable Size & Material – Inner diameter (ID) 20–300 mm, outer diameter (OD) tailored to your air chuck. Choose glass fiber (standard), carbon fiber (ultra-stiff), or hybrid.
Long Service Life & Low Maintenance – No wear from corrosion or surface pitting. Smooth surface won’t damage core inner wall. Typical lifespan 5–8 years in daily 3-shift operation.
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