Description Overview Schlumberger FM8N horizontal rubbing frame Year 1996 20 spindles Manual doffing Specifications 355 mm pitch 2 rovings per bobbin Input 12 to 15 ktex according to the material Roving weight 0.66 - 5.5 Nm Draft 9 to 26 by gear box NSC double apron drafting Draft apron 145 mm wide Rubbing speed 1200 cycles/min maximum Number of rubs 5 to 8 per meter 300 mm bobbin