National Sheet Metal Machines Inc

National Sheet Metal Machines Inc by Amerigo Machinery Co

National Sheet Metal Machines Inc

National Sheet Metal Machine Inc. is a family owned business in Smartt, Tennessee. We have been in business for 30 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.

Metal Shears

Metal Shears

National foot shears are designed for precise shearing through 16 gauge mild steel. This shear is also recommended for shearing aluminum, plasitic, copper, brass and lead. All steel side frames, all steel tables and cutter heads with four cutting edge high carbon, high chromium blades, back gauges, table gauges, spring actuated hold down, front arm extensions, bottom treadle safety stop and full three year warranty.

Specifications
Model N5216
Capacity
(Tensile Strength 55,000 lbs. @ rated capacity)
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Cutting Legnth 52″
1321mm
Shipping Weight 980 lbs
445 kgs
Floor Space w/ Gauges 61″ x 75 7/8″ x 42 1/4″
1549 x 1927 x 1073mm
Floor Space w/o Gauges 61″ x 34 1/4″ x 42 1/4″
1549 x 870 x 1073mm

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Air Shears

Air Shears

National offers three heavy duty air shears with steel side frames, all steel cutter heads and tables. These air shears are standard with four cutting edge high carbon high chromium blades, front arm extensions, table gauges, back gauges, and heavy duty foot switch.

Optional Accessories:

57″ Squaring arm

Model NSA 52

Specifications
Model NA3612 NA5216 NA5212
Capacity
(Tensile Stregnth 55,000 lbs. @ rated capacity)
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Strokes Per Minute Approx. 40 Approx. 40 Approx. 40
Cutting Legnth 36″
914mm
52″
1321mm
52″
1321mm
Shipping Weight 1100 lbs
499 kgs
1400 lbs
635kgs
1600 lbs
726 kgs
Floor Space w/ Gauges 45” x 75 7/8” x 42 1/4”
1143 x 1927 x 1073mm
61” x 75 7/8” x 42 1/4”
1549 x 1927 x 1073mm
62” x 75 7/8” x 42 1/4”
1575 x 1927 x 1073mm
Floor Space w/0 Gauges 45” x 22 3/4” x 42 1/4”
1143 x 578 x 1073mm
61” x 22 3/4” x 42 1/4”
1549 x 578 x 1073mm
62” x 22 3/4” x 42 1/4”
1575 x 578 x 1073mm
Recommended p.s.i. 100 100 100

 

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Hydraulic Shears

Hydraulic Shears

National heavy duty power shears are equipped with a fully integrated hydraulic unit. Complete with electrical hydraulic valve, pilot operated-pressure relief valve, heavy duty foot switch that allows this unit to return to the top of the stroke when the operator removes his foot from the foot switch. Heavy duty double acting cylinders. Fully enclosed control panel. Then National shear is actuated by a portable shrouded electric foot switch attached to a long flexible cables so it may be positioned comfortable to the operator. Steel side frames, all steel cutter heads and tables with solid 4-edge high carbon high chromium blades. Quick adjusting back gauge for direct reading with a positive lock. Standard with table gauges and front arm extensions.

Specifications
Model NH3612 NH5216 NH5212 NH5210
Capacity
(Tensile Strength 55,000 lbs. @ rated capacity)
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
10 Gauge: 3.4mm
Stainless Steel
14 Gauge: 1.9mm
Strokes Per Minute Approx. 40 Approx. 25 Approx. 25 Approx. 25
Cutting Length 36”
914mm
52”
1321mm
52”
1321mm
52”
1321mm
Shipping Weight 1200lbs
544kgs
1400lbs
635kgs
1600lbs
726kgs
1950lbs
885kgs
Floor Space w/ Gauges 45” x 75 7/8” x 42 1/4”
1143 x 1927 x 1073mm
61” x 75 7/8” x 42 1/4”
1549 x 1927 x 1073mm
61” x 75 7/8” x 42 1/4”
1549 x 1927 x 1073mm
62” x 79 7/8” x 42 1/4”
1575 x 2029 x 1073mm
Floor Space w/o Gauges 45” x 22 3/4” x 42 1/4”
1143 x 578 x 1073mm
61” x 22 3/4” x 42 1/4”
1549 x 578 x 1073mm
61” x 22 3/4” x 42 1/4”
1549 x 578 x 1073mm
62” x 22 3/4” x 42 1/4”
1575 x 578 x 1073mm
Oil Reservoir Capacity 14 gal
53 liters
24 gal
91 liters
24 gal
91 liters
24 gal
91 liters
Motor
Single Phase Available
3 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
3 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
3 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
5 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt

 

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1/4 Hydraulic Shears

1/4 Hydraulic Shears

National offers four powerful heavy duty precision hydraulic shears with all steel cutter heads and tables. Standard with hydraulic rubber inserted hold downs, quick adjusting back gauge for direct reading with a positive lock, front arm extensions, table gauges, heavy duty foot switch and well lighted work area. You receive a full three year warranty. The hydraulic unit conforms to J.I.C. standards featuring simplicity of design. The National hydraulic system is simple to maintain with standard replacement parts such as valves, cylinders, hoses and oil. The National shear is actuated by a portable shrouded electric foot switch attached to a long flexible cable so it may be positioned comfortable to the operator.

National Shears have high carbon, high chromium blades with four cutting edges of premium quality tool steel and will withstand nicking and wear better than relieved blades. National blades are secured to the shear with tempered flathead screws through countersunk holes in blades. Complete cuts of full width pieces are 2” longer than specified cutting length. The high strength steel side constructed side frames are made of the highest tensile strength metal needed for long life and accurate shearing. Under drive construction with downward cylinders and major hydraulics under the bed gives the shear a low profile.

Specifications
Model NH4825 NH7225 NH9625 NH12025
Capacity
(Tensile Stregnth 55,000 lbs. @ rated capacity)
Mild Steel 1/4”/6.4mm
Stainless 1/8”/3.2mm
Mild Steel 1/4”/6.4mm
Stainless 1/8”/3.2mm
Mild Steel 1/4”/6.4mm
Stainless 1/8”/3.2mm
Mild Steel 1/4”/6.4mm
Stainless 1/8”/3.2mm
Strokes Per Minute Approx. 20 Approx. 20 Approx. 12 Approx. 12
Cutting Legnth 48”/1219mm 72”/1829mm 96”/2438mm 120”/3048mm
Shipping Weight 5000lbs/2268kgs 6000lbs/2722kgs 7000lbs/3176kgs 9000lbs/4091kgs
Floor Space w/ Gauges 66 1/2” x 98” x 54”
1689 x 2489 x 1372mm
84” x 98” x 54”
2134 x 2489 x 1372mm
116” x 98” x 60”
2946 x 2489 x 1524mm
140” x 98” x 60”
3556 x 2489 x 1524mm
Floor Space w/o Gauges 66 1/2” x 38” x 54”
1689 x 965 x 1372mm
84” x 38” x 54”
2134 x 965 x 1372mm
116” x 39 1/4” x 60”
2946 x 997 x 1524mm
140” x 39 1/4” x 60”
3556 x 997 x 1524mm
Oil Reservoir Capacity 24gal/91 liters 24gal/91 liters 24gal/91 liters 24gal/91 liters
Motor
Single Phase Available
7 1/2 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
7 1/2 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
7 1/2 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt
7 1/2 h.p. 208 volt
1800 rpm 240 volt
3 phase 460 volt

 

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Mechanical Shears

Mechanical Shears

All USA made, rugged welded construction. Inch bed scales, accurate table side gauges. Hold down finger guard with non-marring urethane and positive spring actuation. High carbon high chrome long life tool steel blades. Upper and lower blades are interchangeable. Non-metallic gibbs, maintenance-free self-lubricating bearings. Continuous cycle, single cycle and jog for different needs. Fully guarded safety foot switch, low power consumption.

Specifications
Model NM410 NM610 NM810 NM1014
Capacity Tensile Strength 55,000 @ rated cap Mild Steel
10 Gauge 3.4 mm
SS 14 Gauge 2mm
Mild Steel
10 Gauge 3.4 mm
SS 14 Gauge 2mm
Mild Steel
10 Gauge 3.4 mm
SS 14 Gauge 2mm
Mild Steel
14 Gauge 2 mm
SS 16 Guage
1.6 mm
Strokes Per Minute Approx. 40 Approx. 40 Approx. 40 Approx. 40
Cutting Legnth 49″/1244 mm 73″/1854 mm 97″/2464 mm 121″/3073 mm
Shipping Weight 3600 lbs/1632 kg 4900 lbs/2223 kg 6850 lbs/3107 kg 6100 lbs/2767 kg
Floor Space w/ Gauges 73″x89″x53″
1854x2260x1346
92″x89″x53″
2362x2260x1346
117″x89″x53″
2972x2260x1346
141″x32″x53″
3581x2260x1346
Floor Space w/o Gauges 73″x28″x53″
1854x711x1346
93″x28″x53″
2362x711x1346
117″x28″x53″
2972x711x1346
141″x32″x53″
3581x813x1346
Motor 7.5 hp 208 v
240 v
460 v
3 phase
7.5 hp 208 v
240 v
460 v
3 phase
7.5 hp 208 v
240 v
460 v
3 phase
5 hp 208 v
240 v
460 v
3 phase

 

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Bench Brakes

Bench Brakes

Simplicity of design allows these brakes to work in the most direct fashion. Easy to set up and operate. Body sections are welded steel plates, with heavy truss rods and braces for longer life and greater strength. These brakes are standard with extension handles, apron stop for repeat bends, and replaceable bushings at points of wear.

Specifications
Model U4816 S4816 Stand
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel 16 Gauge
1.6mm
Stainless 20 Gauge
.9mm
Mild Steel 16 Gauge
1.6mm
Stainless 20 Gauge
.9mm
Maximum Lift of Beam 1 1/4”/32mm 1 1/4”/32mm
Finger Width 2” 3” 4”
51mm 76mm 102mm
Maximum Depth of Box 4”/102mm
Bending Length 48 1/4”/1226mm 48 1/4”/1226mm
Shipping Weight 500lbs/227kgs
1689 x 965 x 1372mm
470lbs/213kgs
2134 x 965 x 1372mm
100lbs/45kgs
Floor Space 54”x19”x271/4”
1372x483x692mm

 

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Box and Pan Brakes

Box and Pan Brakes

National has four popular floor model box and pan brakes designed to be easy and simple to operate. Standard with 2″ x 3″ and 4″ finger widths, stop rods for repeat bends, two large counterweights, and precision bearings on the apron. All steel body construction with extra heavy tie rods for minimum deflection.

Specifications
Model U4812 U7216 U7212 U9616
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Fimger Width 2”, 3”, 4”
51, 76, 102mm
2”, 3”, 4”
51, 76, 102mm
2”, 3”, 4”
51, 76, 102mm
2”, 3”, 4”
51, 76, 102mm
Maximum Depth of Box 4”/102mm 4”/102mm 4”/102mm 4”/102mm
Bending Length 49”/1245mm 73”/1854mm 73”/1854mm 97”/2464mm
Shipping Weight 1150lbs/522kgs 1850lbs/839kgs 2100lbs/953kgs 2200lbs/998kgs
Floor Space w/ counterweight 95” x 27” x 55”
2413 x 686 x 1397mm
119” x 27” x 55”
3023 x 686 x 1397mm
129” x 27” x 59”
3277 x 686 x 1499mm
143” x 27” x 55”
3632 x 686 x 1397mm

 

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Heavy Duty Box & Pan Brakes

Heavy Duty Box & Pan Brakes

National offers four heavy duty box and pan brakes made in the U.S.A. Standard with heavy body construction, precision bearings on the apron, two large cast iron counterweights and apron stop for repeat bends.

Section fingers are precision machined from rolled steel bar stock for maximum strength. The fingers can be adjusted or removed quickly by the loosening of a cap screw. Heavy duty steel plates and tension bars are precision incorporated for minimum deflection.

Specifications
Model U6-4812 U6-7212 U6-9614 U6-12016
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
12 Gauge: 2.7mm
Stainless Steel
16 Gauge: 1.6mm
Mild Steel
14 Gauge: 1.9mm
Stainless Steel
18 Gauge: 1.2mm
Mild Steel
16 Gauge: 1.6mm
Stainless Steel
20 Gauge: .9mm
Maximum Depth of Box 6”/152mm 6”/152mm 6”/152mm 6”/152mm
Bending Length 49”/1245mm 73”/1854mm 97”/2464mm 121”/3073mm
Shipping Weight 1900lbs/862kgs 2530lbs/1148kgs 2800lbs/1270kgs 3200lbs/1452kgs
Floor Space w/ counterweight 95” x 27” x 55”
2413 x 686 x 1397mm
126 1/2” x 29” x 59”
3213 x 737 x 1499mm
153” x 27” x 59”
3886 x 686 x 1499mm
177” x 29” x 59”
4496 x 737 x 1499mm

 

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Hand Brakes

Hand Brakes

National offers these hand brakes with a great deal of pride. A simple design, utmost strength with a long life of dependable service. Streamline designed for fast, accurate bending – even for the inexprienced workman. Heavy steel body construction with extra heavy tie rods for perfect alignment. Precision bearings on the apron assures you of a smooth operating brake.

Specifications
Model N4812 N7212 N9616
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel
12 Gauge: 2.7mm
Stainless
16 Gauge: 1.6mm
Mild Steel
12 Gauge: 2.7mm
Stainless
16 Gauge: 1.6mm
Mild Steel
16 Gauge: 1.6mm
Stainless
20 Gauge: .9mm
Bending Length 49”/1245mm 73”/1854mm 97”/2464mm
Shipping Weight 1050lbs/476kgs 1800lbs/816kgs 1600lbs/726kgs
Floor Space w/ Gauges 95” x 27” x 55”
2413 x 686 x 1397mm
129” x 27” x 59”
3277 x 686 x 1499mm
143” x 27” x 55”
3632 x 686 x 1397mm

 

Specifications
Model N9614 N12016 N12014
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel
14 Gauge: 1.9mm
Stainless
18 Gauge: 1.2mm
Mild Steel
16 Gauge: 1.6mm
Stainless
20 Gauge: .9mm
Mild Steel
14 Gauge: 1.9mm
Stainless
18 Gauge: 1.2mm
Bending Length 97”/2464mm 121”/3073mm 121”/3073mm
Shipping Weight 1750lbs/794kgs 2800lbs/1270kgs 3200lbs/1452kg
Floor Space w/ Gauges 153” x 27” x 59”
3886 x 686 x 1499mm
177” x 29” x 59”
4496 x 737 x 1499mm
177” x 29” x 59”
4496 x 737 x 1499mm

 

 

 

Specifications
Model N14418
Capacity
(Yield Strength 30,000 lbs. @ rated capacity)
Mild Steel
18 Gauge: 1.3mm
Stainless
22 Gauge: .85mm
Bending Length 145”/3683mm
Shipping Weight 3450 lbs/1553kgs
Floor Space w/ Gauges
w/ Counterweight
201” X 29 X 59”
5105mm x 737mm x 1499mm

 

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Power Roll Forming Machine

Power Roll Forming Machine

National’s 3″ and 4″ 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 and 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 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 PH
208-220-440 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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Quick Set

Quick Set

National’s Quick Set is a two turn manual digital readout back gauge. It’s a linear digital measuring system showing metric, Decimal or fractional display with accuracy and repeatability. All moving parts are guarded for safety. Travels 32 inches in two seconds. All parts are made in the USA.

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Shear Accessories

Front Operated Digital Back Gauge

L.E.D. CONTROL

  • Precision digital front operated back gauge
  • Control panel located out of the work area, yet convenient for the operator.
  • Precision Thomson bearings
  • Max travel 30”/762mm
  • Precision reliable repeatability improves cutting accuracy.
  • Shipped assembled for easy mounting
  • Digital readout in increments of one thousandth of an inch
  • No memory loss due to power failure
  • Easy mounting, can be retrofitted to any National Shear

 

Specifications

Model

NBG36

NBG52

NBG48

Floor Space

(l x w x h)

36” x 44” x 161/2”

915x1118x419mm

511/4” x 44” x 161/2”

1302x1118x419mm

511/4” x 48’ x 19”

1302x1219x483mm

Shipping Weight

300lbs/136kgs

340lbs/154kgs

380lbs/172kgs

Travel

30”/762mm

30”/762mm

30”/762mm

 

 

Specifications

Model

NBG72

NBG96

NBG120

Floor Space

(l x w x h)

72” x 48” x 19”

1829x1219x483mm

81″ x 48″ x 19″

88″ x 48″ x 19″

Shipping Weight

480lbs/218kgs

580 lbs/26 1kgs

680 lbs/306 kgs

Travel

30”/762mm

30”/762mm

30”/762mm

Squaring Arm

National brings to you a squaring arm constructed of high tensile strength, durable solid cast iron. National’s squaring arm comes with 57” to 60” black oxided scale with 1/16” increments. This squaring arm comes with jack screws for easy leveling. National’s squaring arms are easily assembled on the left side of the machine.

 

Specifications

Model

NSA52

NSA48

NSA72

NSA96

NSA120

Length

431/2”/1105mm

45”/1143mm

45”/1143mm

45”/1143mm

45”/1143mm

Shipping Weight

72lbs/33kgs

107lbs/49kgs

107lbs/49kgs

107lbs/49kgs

107lbs/49kgs

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