Concrete Crushers

Concrete Crushers | Concrete Pulverizers

NPK's Primary/Secondary Concrete Crushers are designed to effectively handle any primary and/or secondary demolition and recycling operation.

NPK concrete pulverizers easily crush through reinforced concrete and cut through light steel structures allowing material to be separated and recycled, and simultaneously, permits easier handling of material.

Maximum crushing/cutting force with more efficiency

Competitive cylinder systems need larger cylinders to equal the force developed by the more compact NPK intensifier system. On the job, NPK's exclusive integral hydraulic intensifier system provides faster cycle times compared to competitive units using larger cylinders that require considerable amounts of flow to produce an equal amount of productivity; thus producing the shortest cycle time in the industry. 

Designed for performance

With the newly improved tooth configuration utilizing a high-profile center tooth and lower profile teeth on both sides of the movable jaw, NPK concrete pulverizers can be used for both primary and secondary crushing operations. Abrasion resistant, high strength, alloy steel teeth provide decreased wear and increased durability. In addition, the "R" models come with full 360 degree power rotation for maximum versatility.

Improved design for easier maintenance

In addition to the bolt-on replaceable tooth plate on the movable jaw, all “A” models now utilize a bolt-on replaceable plate on the corresponding portion of the fixed jaw.  The new design decreases downtime due to repairs while increasing the life of the crusher.  Cutting-torch operations are eliminated by a replaceable high-strength, steel center cutter that slices through rebar and light steel structures.

U series concrete crusher 'A' style jaw


Faster, more efficient separation of concrete and steel rebar

Powerful concrete crushing forces increase when jaws meet resistance, as the exclusive NPK cylinder intensifier converts flow to pressure.

NPK dedicated mounting kits enable concrete crushers to be mounted as excavator attachments for carriers within the recommended weight range for each model.  See the Attachment Wizard to determine which NPK hydraulic attachments are compatible with your carrier.

Potential applications include:

  • Construction and Demolition (C&D) recycling / sorting
  • Concrete recycling
  • Commercial demolition
  • Separating concrete from rebar



Visit and subscribe to NPK's YouTube channel for videos of concrete pulverizers in action!  

Visit NPK's photo website for searchable concrete pulverizer photo galleries!

Visit the Concrete Crusher Publications page for sales brochures and operation & maintenance manuals.


Visit each concrete crusher model page below for additional images and specifications. If you require a booster service manual or would like a hard copy of the operation and maintenance manual, please contact the Sales department at 440-232-7900 or by email at

Image Model Recommended Carrier Weight Rotation
U21JA 42,000 - 62,000 lbs fixed
U21JRA 42,000 - 62,000 lbs 360 degrees
U31JA 62,000 - 106,000 lbs fixed
U31JRA 62,000 - 106,000 lbs 360 degrees
U45J 90,000 - 110,000 lbs fixed
U45JR 90,000 - 110,000 lbs 360 degrees
X-4AFR 9,000 - 12,000 lbs 360 degrees
X-4AR 9,000 - 20,000 lbs 360 degrees
X-4AREH 10,000 - 20,000 lbs 360 degrees
X-7AFR 13,000 - 20,000 lbs 360 degrees
X-7AR 13,000 - 31,000 lbs 360 degrees
X-7AREH 13,000 - 31,000 lbs 360 degrees