400,000lbf Concrete Compression Machines

MC-400 Series Concrete Compression Machines are accurate and reliable units for compressive strength testing of concrete, grout, and mortar strengths. Models have a capacity of 400,000lbf (1,780kN) and include a Fixed-Height Concrete Compression Machine Mounting Stand for safe, efficient handling of samples. These rugged units are equipped for testing standard 6x12 concrete cylinders up to 11,300psi. Available accessories easily adapt them for testing of different sized cubes, cores, masonry prisms, and cylinders, as well as flexural beam specimens. Frame stiffness properties meet or exceed the recommendations of ACI 363 to allow continuously uniform loading.

A bottom-mounted hydraulic ram uses an upward force to apply compression. The first stage uses high volume and low pressure to advance the piston rapidly. The 0.75 hp oil-immersed pump switches to the second stage at 135psi of pressure automatically. During this stage, the low volume high-pressure flow maintains a continuous rate of loading from 2,000–200,000lbf (8,896–889,600kN) per minute.

The spherically-seated upper platen assembly diameter is 6.5in (165mm) and is hardened and nickel-plated with a locking stem to allow quick change out of accessory components. The rectangular lower platen is a compression table featuring a precision-ground piston with O-Ring sealing and a Teflon® backup ring resting in a polished steel cylinder.

A high-pressure hydraulic safety valve and watchable steel fragment guard doors offer advanced protection while preventing use beyond maximum machine capacity. The pressure bleed hole of the piston inhibits the overextension of the ram. Side-mounted controllers can also be installed in an optional separate console. Contact us for customizations.

Read more on Pro and Pro-Plus Controllers.

Features:

• 400,000lbf (1,780kN) Capacity
• Accuracy exceeds ASTM C39/39M and E4 requirements
• Frame meets or exceeds ACI 363 recommendations for stiffness
• Latchable Steel Fragment Guard Doors promote safety
• Piston with pressure bleed hole prevents use beyond maximum capacity
• Powerful 0.75 hp system offers better load control

Included Items:

• 400,000lbf Compression Machine (115V/60Hz or 230V/50Hz)
• Pro or Pro-Plus Controller
• Mounting Stand

Accessories:

• MCA-15 4in Spacer used in testing compressive strength of cylinders
• MCA-4 Universal Flexural Set for center or third-point loading of 6x6in flexural beams
• MCA-7 2in Cube Test Set for compression testing of 2x2x2in (51x51x51mm) cube specimens
• MCA-9 6in Cube Test Set for compression testing of 6x6x6in (152x152x152mm) cube specimens
• MCA-11 Cylinder Splitting Set for splitting tensile strength of concrete cylinders
• MCA-13R Masonry Test Set for testing 8in concrete masonry units (CMU blocks)
• MCA-17 3x6in Cylinder Test Set for compression testing of 3x6in-cylinder specimens
• MCA-55 Draw Rod allows adjusting of vertical working height to test different sample sizes
• MCA-51 Carrier Bracket safely positions upper platen when testing masonry block with 400 series compression machines
• MCA-28 Printer Accessory for use in models with Pro-Plus Controllers
• MCA-29 Able Cable for Pro or Pro-Plus Compression Machines, and allows a direct transfer of test data to the user's PC
• MCA-63 Piston Over-Extension Limit Switch provides additional safety during operation
• Perpendicularity Verification Devices (PVDs) are used to verify the proper perpendicular alignment of concrete cylinders during compressive strength testing.

Related blogs:

• Choosing a Standard Concrete Compression Testing Machine
• Concrete Cylinder Testing - From the Field to the Lab