The 2019 Rieter RSB D401C is a highly efficient autoleveler draw frame designed for spinning mills that prioritize sliver uniformity and high-speed production. The “D401C” variant is part of the established D40 series, specifically refined for enhanced stability and precision in fiber drafting. As a 2019 model, it features modern digital controls and the legendary Rieter autoleveling system, which remains the industry benchmark for correcting sliver mass variations in real-time.














