Toroidal Dies, Torus Dies, Ring Dies, Center Hole Dies, Donut Dies

Toroidal Pellet Dies

Toroidal Pellet Dies
REFLEX Analytical offers custom non-evacuable toroidal dies or commonly referred to as ring pellet die or center hole pellet die assemblies. Scroll below for pricing and order details for circular, square and rectangular sizes ranging from 2mm up to 19mm outside dimension. Larger diameter, customized geometries and dimensions are encouraged and available upon request.

The pellet dies are commonly used with our series of laboratory presses. Each pellet die is precision fabricated from high quality hardened 440C stainless steel. The assembly includes a die chamber, die base, one set of outside dimension with center inside dimension anvils(2), a center inside dimension pin, a pellet plunger, a center pin plunger and acrylic extraction ring to facilitate sample pellet removal. The die chamber dimensions for pellet die sizes up to 19mm are 50.80mm height x 32mm outside diameter with each anvil measuring 12.70mm thickness (two anvils are used for pellet fabrication). Add 108mm for the extraction ring and plunger then account for the volume of sample matrix to calculate the overall nominal height of each die assembly. Pictured above is a 7mm o.d. x 3mm i.d. center hole pellet die assembly (click on the image to enlarge).

REFLEX Analytical recommends the review of the chamber height to confirm there is adequate height to fabricate a pellet to the desired pellet thickness. If required, the chamber height and plunger height can be adjusted accordingly. Offer request for quotation and indicate the required height. Furthermore, please assure there sufficient height between the top and bottom press rams.

Tungsten carbide anvils are optional and ideal for hard or abrasive powdered sample materials which may tend to mar the surface of stainless steel anvils. Notably, the tungsten carbide transverse rupture strength is 500,000 psi and hardened Stainless Steel is 100,000 psi. Therefore theoretically, tungsten carbide offers 5x the compression strength when compared to hardened stainless steel. A tungsten carbide die chamber and die plunger are also higher cost options.

CLICK HERE to preview other solid and semi-solid sampling accessories such as evacuable pellet dies, XRF dies, heated dies, manual and auto lab presses, polymer film makers, and much more.
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Toroidal Pellet Die