HPHT Сubic Press Machine

Labrilliante is a manufacturer of lab-grown diamonds that applies advanced HPHT cubic press technology. Our team continually refines production parameters to grow diamonds with superb clarity, color and cut. We are based in the USA and ship worldwide.

We offer fully customizable HPHT solutions with pricing scaled per specifications. All systems include intuitive controls and automation for ease of operation. You can buy Labrilliante’s cubic press machines online and tap guidance from their engineering experts.

HPHT cubic press is a machine that can produce synthetic diamonds, which can achieve single-crystal diamonds, lab-grown diamonds, diamond powder, composite sheet, and so on. The most popular models 650 and 960 and others are available.

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A High Pressure High Temperature (HPHT) cubic hydraulic press is a machine used to produce lab-grown diamonds. It works by subjecting a carbon source material, such as graphite, to extremely high pressure and temperature, simulating the conditions under which natural diamonds are formed in the Earth's crust.

As synthetic diamond markets rapidly expand worldwide, high pressure high temperature (HPHT) presses are seeing heightened demand. Companies across the globe are looking to invest in this technology.

HPHT cubic presses create extreme heat and pressure to replicate the conditions under which natural diamonds form. The cubic press model features a reaction cell that enables high-volume diamond production with minimal maintenance. This makes it the predominant HPHT technology, especially in major lab diamond producing nations like China, Russia and the United States.

How to Choose a Hydraulic Press Machine?

When selecting a cubic press, buyers must understand their production goals upfront - whether for industrial diamond powder, HPHT rough diamond growth, diamond enhancement or tool-grade diamonds. The press configuration and technical specifications can then be tailored accordingly.

For example, producing single-crystal diamonds requires precise, sustained pressure control over longer growth cycles, necessitating advanced electronics. Conversely, industrial diamond synthesis involves shorter cycles and simpler pressure parameters, lowering control panel requirements. Configuration directly impacts system pricing and return on investment.

The cubic press promises to accelerate the adoption of lab-grown diamonds globally. With heightened production volumes, improved crystal quality and lower operating costs compared to older HPHT technologies, the cubic press helps lab diamond producers meet rising market demand. As the premier HPHT solution, it will shape the future trajectory of the created diamond industry worldwide.

Product Overview

The main parts of a cubic press are usually:

  1. Pressure system. An array of high-power hydraulic cylinders and pistons actuated by electric pumps produce up to 1.5 million PSI of pressure - replicating the crushing forces deep inside Earth.
  2. Temperature control system. The press encloses the central cubic chamber in precision-controlled heating systems including resistant elements and laser emitters.
  3. Pressure vessel. Surrounding the core is a rigid pressure vessel architected using high-strength alloy steel. It provides an impregnable barrier for retaining the extreme temperature and pressure levels.
  4. Control system. Sophisticated automation technology including PLCs and PID controllers monitor and calibrate process parameters in real-time. By optimizing temperature, pressure and time configurations, they facilitate flawless manufacturing runs.HPHT Cubic Presses Powering Applications

Various Models of Hydraulic Press Technical Parameters

Model TB-650 TB-700 TB-750 TB-800(uncylindered) TB-850 TB-900 TB-960(uncylindered) TB-980(uncylindered)
Diameter of working cylinder (mm) 650 700 750 800 850 900 960 980
Design pressure (MP) 110 110 110 110 110 118 100 100
Cylinder force (KN) 36000 42000 48500 55000 62000 75000 72000 75000
Six-cylinder pressure (KN) 6x32000 6x37000 6x42800 6x48700 6x55000 6x60400 6x57800 6x60000
Ultra-high pressure (MP) 97 97 97 97 97 95 80 80
Maximum piston stroke 90 90 90 90 100 100 100 100
Opening height (mm) 421 440 433 447 540 544 540 540
Closing height (mm) 331 350 343 357 440 444 440 440
Electric heating power (Optional) 40 40 40 40 40 60 60 60
Total engine power (KW) 22.5 (7.5+15) 22.5 (7.5+15) 29.5 (11+18.5) 29.5 (11+18.5) 29.5 (11+18.5) 33 (11+22) 33 (11+22) 33 (11+22)
Selection punch (mm) φ142-φ160 φ155-φ165 φ165-φ175 φ175-φ185 φ185-φ199 φ199-φ220 φ185-φ220 φ185-φ220
External size (L*W*H) 2990x2990x3525 3170x3170x3640 3120x3120x3565 3180x3180x3740 3360x3360x3865 3330x3330x3690 3330x3330x3690 3350x3350x3710
Weight (t) 48.3 62.5 71.1 75.5 82 85 80 80

Cubic Press Accessories

Application of HPHT Cubic Press

HPHT cubic presses unleash extreme pressure and temperature to create novel materials breakthroughs across industries


Polycrystalline diamond compact (PDC) cutters and tools rely on cubic press systems to manifest. PCDs enable faster, economical oil and gas drilling. Polycrystalline cubic boron nitride (PCBN) cutting implements boost machining efficiency.

Lab-Grown Diamonds

Advancing HPHT techniques grow increasingly refined synthetic diamonds rivaling mined diamond quality. Jewelry-grade crystals exhibiting exceptional clarity, shine and cuts come off cubic presses. This promises more affordable, ethical diamond sourcing.

PCBN and tools

The full name of PCBN is "polycrystalline cubic boron nitride". It is commonly used to make super-hard cutting tools, punches, etc.

For US entities keen to tap the lucrative lab diamond market, Labrilliante offers customizable HPHT solutions scalable to any production volume. Their catalog features diverse automated presses boasting advanced pressure and temperature controls for mass manufacturing brilliant, flawless crystals. By buying our cubic systems online, companies worldwide can benefit from tailored equipment specifications, rapid order fulfillment and dedicated customer support - getting set up for commercial lab diamond production. 

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Synthetic diamonds, CBN, PCD, PDC and numerous other superhard composites for widespread applications.

It can produce CVD diamond precursors but not finalize crystals. HPHT and CVD remain distinct methods.

Yes, techniques like color alteration rely extensively on specialized cubic press capabilities.

Wooden containers with water/oil-resistant coatings safely mobilize materials as per client needs.

By empowering unmatched experimentation, HPHT cubic press systems will steer strategic innovations across industries for years ahead.