The Standard SRN-9X is a proven, high-speed suction-feed rotary numbering system that produces clear number definition, even through multiple part sets, by ensuring positive point contact and easy platen pressure adjustment. As the head rotates, the numbering head is advanced, re-inked, and the number is offset directly to the sheet or set, just as on a press. You can repeat, skip and do multiple numbering without stopping the sheet, producing up to 36,000 impressions per hour. With a cycle speed of up to 9,000 sheets / sets per hour, the standard SRN-9x Suction Feed Rotary Numberer uses a rotary system that prints similar to an offset press, ensuring only the highest quality printing. The sheet-spacing system uses electronic pulses to ensure accurate registration, and the bottom feed / top-load design allows virtually non-stop production. The SRN9x is known for its precision feeding and sheet control, its ability to handle up to 8 parallel or convex heads, Full safety enclosure and interlocks and for its high power vacuum and air pump.