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Armstrong Magnetics, Inc. | (800) 965-4968 | sales@armsmag.com | Shopping Cart 
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Magnet Assemblies Overview
Ceramic Magnet Assy
RB Cup Assembly
RB Cup Assy w/Parts
RB Cup Assembly Black
RB Cup Assembly SS
PVC Boot for RB
Rubber Boot for RB
Neodymium Magnet Assembly
Rubber Covered Round Base Magnet
Custom Magnet Assy
Round Base Ceramic Magnet Fastener with with Epoxy Bonding, Center Hole and Chrome Plating, Magnet Cup Assemblies - RB Series- RB Ceramic magnet cup assemblies are assembled of Chrome plated steel cup and a ceramic magnet ring, bonded together with epoxy. - The black epoxy bonding of our RB is unique in order to achieve stronger construction of the assembly. Our round base magnets can withstand much more impact than our competitors'. For details, please call us. - Max pull is tested on a ½” thick and flat machined steel plate. But the actual pull should be much smaller if your steel is thinner, rough, rusty, coated or not very flat. For any critical applications, three-time safety factor is strongly recommended. - Large inventory for immediate delivery. - Besides standard models listed bellow, we can make assemblies per custom designs. - With the centre hole design, a hook or knob can be attached to hold antennas, signages, safety whips, and much more. They are widely used in industrial and commercial environment and at home due to their versatility, powerful magnetic strength and other physical properties. |
 RB-20, 21, 30, 50, 70, 80, 90, 100 |
 RB-10 |
 RB-20L, 30L |
| Part No. | Model and Print | Overall Dia [OD] (in.) | Cup Hole Dia [ID] (in.) | Magnet Hole Dia [MD] (in.) | Height [T](in.) | Max. Pull (lb) | Price (US$) | Order Online |
| 62000 | RB-10 | 0.866 | no hole | no hole | 0.177 | 5 | 0.35 |
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| 62001 | RB-20 | 1.205 | 0.125 | 0.256 | 0.188 | 10 | 0.55 | Discontinued |
| 62013 | RB-21 | 1.205 | 0.156 | 0.256 | 0.188 | 10 | 0.55 |
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| 62011 | RB-20L | 1.205 | Loop | 0.256 | 0.188 | 10 | 0.60 | Temporarily Out of Stock |
| 62002 | RB-30 | 1.400 | 0.188 | 0.375 | 0.281 | 15 | 1.10 |
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| 62012 | RB-30L | 1.400 | Loop | 0.375 | 0.281 | 15 | 1.20 | Temporarily Out of Stock |
| 62003 | RB-50 | 2.030 | 0.188 | 0.866 | 0.313 | 35 | 1.98 |
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| 62004 | RB-70 | 2.625 | 0.270 | 1.000 | 0.375 | 80 | 3.68 |
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| 62005 | RB-80 | 3.200 | 0.281 | 1.203 | 0.438 | 100 | 4.98 |
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| 62006 | RB-90 | 3.790 | 0.375 | 1.280 | 0.500 | 150 | 7.65 |
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| 62007 | RB-100 | 4.900 | 0.500 | 1.750 | 0.500 | 220 | 9.65 |
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