MP345 Shear Jaw

MP345 Shear Jaw

MP345 with Shear jaw


Cat® Multi-Processors accept multiple interchangeable jaws for a wide range of demolition tasks. Faster cycle times get your jobs done quicker. Greater power means taking on bigger jobs. Quick jaw change gives you the right tool for the task at hand, without slowing you down. All built on a durable, easy to maintain platform.

Cycle Times are 50 Percent Faster

  • New speed booster technology dynamically shifts hydraulic force from speed to boost mode, automatically as you operate.
  • You’ll spend less time waiting for the jaw to open or close to contact, as the speed valve automatically adjusts to fast flow when there’s no load.
  • Maximum crushing/cutting force is applied as soon as the jaw contacts material.

Up to 19 Percent More Force

  • Process more per hour, ship more per shift, make more every day. Speed booster magnifies hydraulic force when the jaw contacts material, quickly making the cut.
  • Mount more power even on smaller excavators. Compact design keeps the center of gravity as close as possible to the machine.
  • Get maximum performance and total support with a complete Cat demolition solution. Programs for the MP are built into the Next Gen Cat operator display. Single point of support your entire system by your local Cat dealer.

Change Jaws in 15 Minutes

  • Innovative jaw locking enables a single operator to easily change jaws in 15 minutes or less. Requires only standard hand tools.
  • Simple and safe jaw changes are part of the design. Every jaw sits stable, even on the roughest work site, on the included jaw stand.
  • MP332 accepts these jaw types:
    • Concrete Cutter – outer jaw cracks concrete; inner shear jaw cuts steel
    • Demolition – opens wide to crack the largest concrete structures
    • Pulverizer – crushes concrete, separating the rebar
    • Shear – cuts structural steel, pipe, and cable

Durable and Maintainable

  • Protect your investment and maintain performance, quickly and economically. Jaws are protected with easily changed, individually replaceable wear parts.
  • Get more production time per cutter before replacement. Most cutting blades can be flipped in two ways, to use four different cutting edges.
  • Even when deep into debris, the cylinder rod is armored to prevent damage and the main cylinder body is protected inside the housing.

  • Specs
  • Docs



Long Name:
MP345 Shear Jaw
MP345 Shear Jaw


Cycle Time - Open
1.9 s / 1.9 s
Cycle Time - Close
1.4 s / 1.4 s
Cutting Force - Blade Throat
951 Sh Ton / 8463 kN
Cutting Force - Blade Center
409 Sh Ton / 3637 kN
Cutting Force - Blade Tip
219 Sh Ton / 1945 kN

Hydraulic Requirements

Jaw Circuit - Max. Oil Pressure
5076 psi / 350 bar
Jaw Circuit - Max. Oil Flow
95 gal/min / 360 l/min
Rotation Circuit - Max. Oil Pressure
2321 psi / 160 bar
Rotation Circuit - Max. Oil Flow
13 gal/min / 50 l/min

Dimensions - Jaw

Jaw Depth
29.3 in / 744 mm
Cutter Length
22.8 in / 579 mm
Jaw Opening - Maximum
19.7 in / 500 mm
Jaw Width - Fixed
17.1 in / 434 mm
Jaw Width - Moveable
5.7 in / 146 mm

Dimensions - Housing + Jaw

90.4 in / 2296 mm
73.4 in / 1865 mm
39.6 in / 1005 mm


Weight - Housing, Jaw and Bracket
9524 lb / 4320 kg
Weight - Jaw Only
4354 lb / 1975 kg

Recommended Carrier Weight

Excavator Minimum
45 tons
Excavator Maximum
65 tons