Independent aftermarket replacement blades
SHRED-TECH ST-15 BLADES.
Aftermarket cutter discs / shear knives for selected Shred-Tech ST-15 configurations—manufactured to the verified blade drawing, sample or measured geometry.
Model compatibility data
Choose the machine configuration.
The same model may use different knife sizes, cutter counts, or rotor versions. Use this table to identify the closest published configuration, then confirm the physical part.
| Configuration | Cutting part | Published specification | Quantity | OEM part / companion tool | Supply route |
|---|---|---|---|---|---|
| 1/4 in knife thicknessPublished specification | Cutter discs / shear knivesknife | Thickness 6.35 mm; outside diameter 171.45 mm; hex bore approx. 68.26 mm | 73 | Not published in verified OEM referencesSpacer / counter component (confirm from shaft assembly drawing) | Custom-made to published specification |
| 3/8 in knife thicknessPublished specification | Cutter discs / shear knivesknife | Thickness 9.525 mm; outside diameter 171.45 mm; hex bore approx. 68.26 mm | 50 | Not published in verified OEM referencesSpacer / counter component (confirm from shaft assembly drawing) | Custom-made to published specification |
| 1/2 in knife thicknessPublished specification | Cutter discs / shear knivesknife | Thickness 12.7 mm; outside diameter 171.45 mm; hex bore approx. 68.26 mm | 36 | Not published in verified OEM referencesSpacer / counter component (confirm from shaft assembly drawing) | Custom-made to published specification |
| 5/8 in knife thicknessPublished specification | Cutter discs / shear knivesknife | Thickness 15.875 mm; outside diameter 171.45 mm; hex bore approx. 68.26 mm | 46 | Not published in verified OEM referencesSpacer / counter component (confirm from shaft assembly drawing) | Custom-made to published specification |
| 1 1/4 in knife thicknessPublished specification | Cutter discs / shear knivesknife | Thickness 31.75 mm; outside diameter 171.45 mm; hex bore approx. 68.26 mm | 14 | Not published in verified OEM referencesSpacer / counter component (confirm from shaft assembly drawing) | Custom-made to published specification |
Before quotation
Confirm the blade—not only the machine badge.
- Machine identity
Shred-Tech ST-15, serial range if available - Blade position
Rotor knife, counter knife, cutter disc, tooth or spacer - Critical dimensions
Length, width, thickness, bore/hole pattern and hook profile - Operating details
Feedstock, contamination, output size and quantity
Published machine reference
- Machine dimensionsConfirm from nameplate / manual
Shred-Tech and ST-15 identify compatibility only. This site is not affiliated with, sponsored by, or endorsed by the original equipment manufacturer.
Buying questions
Shred-Tech ST-15 blade FAQ.
The model is the starting point. Geometry verification protects both fit and quotation accuracy.
Can I order Shred-Tech ST-15 blades using only the machine model?
The model number narrows the cutting system, but it is not enough for production. Confirm the blade dimensions, bore or hole pattern, edge geometry and quantity from a drawing, sample or clear photos.
Are these original Shred-Tech parts?
No. They are independent aftermarket replacement parts intended for compatible Shred-Tech ST-15 applications after dimensional verification.
What information is needed for a quotation?
If no blade model is available, send clear photos of both faces, the edge and hole pattern. Add the machine brand, dimensions, material being shredded, quantity, drawing or sample when available.
Which cutting parts are associated with this ST-15 page?
The current published reference covers cutter discs / shear knives. The exact part still depends on the installed rotor or cutter configuration.
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