National Roll

NR-4816

National's 3" and 4" power rolls are designed for simple operation. The 3 rolls of each machine are power driven. Standard with forward and reverse drum switch. Quick release upper roll. Positive chain drive. Heavy duty gear box. Front guard for additional safety. Heavy duty stand is standard. National’s rolls incorporate three precision turned, ground, and polished high carbon steel rolls. Extra heavy duty end frames with quick release handle on the right front for speedy production forming. The drive train is powered with a heavy duty precision reduction gear box to assure durability and long life. The electric panel and gear box are housed in a ventilated stand for protection. Precision roll adjustment is achieved by turning the hand wheel on the left end of the roll. Repeatability is maintained by the forming scale above the hand wheel.

Specifications

Model	NR-4816	NR-7216
Capacity (Tensile Stregnth 55,000 lbs. @ rated capacity)	16 Gauge: 1.6mm	16 Gauge: 1.6mm
Maximum Forming Length	48 1/4”/1226mm	72 1/4”/1835mm
Diameter of Roll	3”/76mm	4”/102mm
Minimum Forming Radius	1 1/2”/38mm	2”/51mm
Wire Grooves (Optional)	3/8”, 1/2”, 5/8”/10mm, 13mm, 16mm	3/8”, 1/2”, 5/8”/10mm, 13mm, 16mm
Roll Speed	18 rpm/14.13 sfpm	18 rpm/14.13 sfpm
Motor: 110-220 Single PH208-220-440 3 PH	1 hp	1 hp
Floor Space (l x w x h)	64” x 37” x 44 1/2”1626 x 940 x 1130mm	88” x 26” x 43 3/4”2335 x 660 x 1111mm
Shipping Weight	970 lbs/440 kgs	1740 lbs/814 kgs

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