National Sheet Metal Machine Inc. is a family owned business in Smartt, Tennessee. We have been in business for 36 years as the number one shear and brake manufacturer in North America. Developing and manufacturing the most dependable products on the market has been our goal since 1977. Since we began with one machine, the U4816 hand brake, National has grown to produce a line of thirty quality machines.
National 3" and 4" Power Rolls are designed for simple operation. They incorporate three precision turned, ground, and polished high-carbon steel rolls, and extra heavy duty end frames with a quick release handle on the right front for speedy production forming.
Need a new machine, or parts or tooling for an existing machine?
Contact Us
Oregon: (503) 581-1516
California: (818) 994-1724
Email: sales@machinetoolsjwk.com
Prices and Specifications are subject to change without notice.

National NR-4816 Roll Former
National NR-4816 Roll Former |
Nationals 3in and 4in power rolls are designed for simple operation. 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.
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Horsepower | 1HP | Capacity | 16 ga. | Max. Forming Length (in.) | 48 1/4 | Roll Diameter (in.) | 3 | Min. Forming Radius (in.) | 1 1/2 | Wire Grooves (optional; in.) | 3/8, 1/2, 5/8, 13mm, 16mm | Roll Speed | 18rpm | Power | 110/220V 1Ph, or 208/220/440V 3Ph | Shipping Dimensions | 44.5in x 64in x 37in | Shipping Weight | 970 lbs.
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National NR-7216 Roll Former
National NR-7216 Roll Former |
Nationals 3in and 4in power rolls are designed for simple operation. 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.
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Horsepower | 1HP | Capacity | 16 ga. | Max. Forming Length (in.) | 72 1/4 | Roll Diameter (in.) | 4 | Min. Forming Radius (in.) | 2 | Wire Grooves (optional; in.) | 3/8, 1/2, 5/8, 13mm, 16mm | Roll Speed | 18rpm | Power | 110/220V 1Ph, or 208/220/440V 3Ph | Shipping Dimensions | 43 3/4in x 88in x 26in | Shipping Weight | 1,740 lbs.
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