• Jun 4, 2026 textile spinning carding calculation or breakage. Cylinder Speed (N_c): Usually expressed in revolutions per minute (RPM). Doffer Speed (N_d): Usually a percentage of cylinder speed, often around 70-80%. Relation: \[ N_d = k \times N_c \] Where \( k \) is a factor determined empirically or via manufa By Arden Pfannerstill
