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8 mm Pellet Press Die Set
8 mm Pellet Die Sleeve
8 mm Pellet Die Spacers
8 mm Pellet Press Die Set
8 mm Pellet Press Die Set

8 mm Pellet Press Die Set

Pellet Press Die Sets
Regular price
Sale price

With your die set order we’ll include:

  • Die sleeve
  • Plunger rod
  • 2 x spacers
  • Base plate
  • Aluminium release ring¬†with¬†cutout for viewing pellet during release

Shipping: Free fast shipping across USA and Canada

Material: hardened tool steel (Rockwell hardness >C60) polished to a high tolerance fit.

8 mm Pellets Dies have a range of applications. as with 6 mm die sets, 8 mm pellet dies are commonly used for making KBr pellets for FTIR analysis, in which small quantities of powders are mixed with Infrared-transparent KBr (Potassium Bromide) powder before pressing into a pellet and transferring into the FTIR.

High compressive stresses can be applied to powders in the 8 mm pellet die sets using low pressing forces. Whilst this can be useful for quickly making pellets, always stay under the recommended load and make sure you stay safe. If you don't have a hydraulic press, for the lower diameter die sets, pressing force can be applied manually with a lever press or arbor press. If you need a slightly difference size for your application.

Die made of hardened tool steel (Rockwell hardness >C60) for long lasting trouble free performance. Sleeve is polished to high tolerances to allow the hardened tool steel plunger to slide through perfectly. Plunger and spacers are made from high yield strength steel, machined and polished to high tolerance for the perfect fit. Interior surfaces ground to mirror-like finish.

For an animation of die assembly, powder pressing and release click here.

Yield Strength Hardened Steel 80,000 psi (550 MPa)
Recommended max loading @ 50 % 40,000 psi (275 MPa)
Recommended max force 3115 lb (1.56 ton, 14 kN)
Typical force for quality pellets 390-1170 lb (0.19-0.58 ton, 2.4-7.3 kN)
Die sleeve inner diameter 8 mm (0.31 inch)
Die sleeve height 40 mm (1.57 inch)
Die sleeve outer diameter 45 mm (1.77 inch)
Assembled height with spacers (w/o powder)* 89 mm (3.5 inch)
Assembled height no spacers (w/o powder)* 73 mm (2.87 inch)

*If making thicker pellets, the die set can operate just the same without spacers.


  • Always wear googles and safety protection equipment
  • Clean well after use to prevent rusting.
  • Do not apply pressure beyond shown on table.
  • See our tips for making perfect pellets here.