Alloy Composite Roller

·Lightweight Hollow Structure
The seamless integrally forged hollow structure reduces weight by 55 % compared to solid steel rollers of the same specifications. Conventional solid steel rollers have considerable dead weight, creating high inertia during high‑speed start‑stop cycles that easily stretches and deforms lightweight substrates. The hollow design lowers motor load and provides rapid speed‑change response, perfectly matching production lines operating above 200 m/min.

·Class G0.8 Dynamic Balancing
Three‑stage balancing calibration under no‑load, half‑load, and full‑load simulated conditions ensures full‑load radial runout ≤0.0025 mm. Ordinary drive rollers on the market receive only a single room‑temperature balancing pass, resulting in noticeable vibration at high speed. This roller guarantees uniform tension distribution across the entire width of wide webs.

·Dual Stress‑Relief Processing
Quenching and tempering combined with vibratory stress relief, using low‑thermal‑expansion alloy steel, prevents micro‑deformation from day‑night temperature variations or 24/7 continuous production. For ultra‑wide rollers exceeding 3 metres in length, the centre does not sag, and the nip gap between upper and lower rollers remains consistently constant.

·Versatile Surface Finishes
Ultra‑mirror hard chrome for optical films; fine matte for controlled traction; anodised for lightweight applications; polyurethane coating for high‑friction conveying of bulky nonwovens. The friction coefficient is customisable to specific substrate requirements without scratching precision surfaces.

·Cooling Channels
Optional built‑in surrounding cooling water channels dissipate operational heat, maintaining roller surface temperature differential ≤±0.7 ℃, ensuring consistent tension throughout seasonal workshop temperature fluctuations.

Biaxially oriented film production lines (BOPP, BOPET, BOPE) for full‑process driving in stretching, traction, and winding sections; clean‑room substrate conveying for lithium battery separators and optical functional films; high‑speed traction of bulky fibre webs for SMS medical nonwovens and maternal/infant hygiene materials; unwinding, traction, and rewinding for synthetic leather and PU base fabrics; smooth paper conveying for high‑end printing and card‑board packaging rewinding/slitting; and weak‑acid‑resistant conveying for biodegradable PLA environmental‑friendly film production lines.