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Material Processor - Jaw Set

On-site versatility is optimized by the availability of interchangeable jaws.

NPK's Material Processors are an efficient solution for concrete, steel and rebar processing, building and bridge demolition, and recycling.

  • Maximum productivity. Interchangeable jaws provide superior results in demolition, concrete processing and scrap recycling.
  • Cost effective. Far more economical than buying four different attachments for four different applications.
  • Rugged design for extended life. Manufactured from high-strength, abrasion-resistant steel; reinforced shield protects cylinder rods.
  • Full 360 power rotation. Provides an effective angle of attack for any job wherever the location.
  • Reduced transportation costs. On-the-job processing reduces material volume, which cuts down the number of trips required to haul material away.
  • The NPK advantage in parts and service. Over 280 NPK distributor outlets are professionally staffed and conveniently located to serve your needs. Just one of the many reasons that have made NPK the leader in boom-mounted attachments.
  • Cylinder design improves crushing / piercing power to handle the toughest jobs. Exclusive integral hydraulic intensifier system boosts power by reducing cycle time, while improving productivity and providing greater power-to-weight ratio.


Model Year
M28S - Cracking
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Unit: 6,400 lbs. (2,915 kg)
Excavator Weight: 25 - 40 US tons (23 - 36 metric tons)
Maximum Jaw: 42 in. (1,067 mm)
Cycle Time (seconds): 3.1 close / 1.7 open


Operating Pressure
3,625 psi (250 bar)
Maximum Crushing / Pierce Force: 115 US tons @ tip (105 metric tons @ tip)
Oil Flow: 50 - 80 gpm (190 - 300 lpm)

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*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.