The C Series—C1500/C1800 Slitter Rewinder is designed and manufactured primarily for high-speed winding of vellums, papers, and polyester films. Depending on machine configuration, the C1500/C1800 Slitter Rewinder can be equipped with rotary shear-, score-, or razor-slitting stations. These assemblies are driven by a servo motor for precise positioning. The servo system follows preset recipe dimensions to locate each slitting knife one at a time until all knives are positioned. The web is rewound on fiber cores using two 3” core locking differential shafts with locking segments. The rewind is equipped with a variable-speed rewind drive programmed to run 20-50 rpm faster than the web speed allowing slipping of the core to maintain equal tension across all rewind rolls. The rear-mounted unwind assembly includes full lateral travel of headstock and tailstock to accommodate various roll widths and positions within the web area. The C1500/C1800 Slitter Rewinder will be equipped with a splicing table consisting of web clamps and a table tilted to 30° for cutting and taping. Unloading arms can be positioned concentric with the rewind shafts for unloading of the finished rewound rolls.