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The COBRA NC 2500 B is the largest screw vacuum pump among these high-performing, robust vacuum pumps for process technology. This pump is ideally suited for applications in which gases and vapors need to be pumped reliably and without contamination. Due to the dry screw technology, the pumping chamber is completely free from operating fluids. This prevents condensation and deposits of the pumping medium and prevents oil contamination.

Operationally reliable
The variable-pitch screw design and free gas discharge allow for a high degree of fluid and particle compatibility. Optimum corrosion resistance is ensured by even temperature distribution. The outstanding levels of efficiency reduce the thermal demand and increase the life cycle.

The COBRA NC 2500 B requires less energy consumption than vacuum pumps using other technologies that achieve a similar high pumping speeds.

The COBRA NC 2500 B screw vacuum pump is designed for applications that involve large flow rates such as steel degassing, space simulation, central vacuum supply or vacuum drying.

COBRA NC 2500 B – Dry and robust. The vacuum technology for processes involving high gas flow in low vacuum range.

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Technical specifications
The COBRA NC is a single-stage, rotary screw vacuum pump. Two screw rotors are rotating inside the cylinder. The pumping medium is trapped between the individual screw coils, compressed and transported to the gas discharge. During the compression process, the two screw rotors do not come into contact with each other or with the cylinder. This means there is no need for lubrication or operating fluids in the compression chamber.

Water cooling options include both direct water cooling or radiator cooling with aircooled heat exchangers. Due to a wide range of technical options and accessories, COBRA NC screw vacuum pumps can be perfectly adjusted to suit every process. The complete COBRA NC series includes pumps with maximum pumping speeds ranging from 82 to 1471 ACFM.

Pumping speed

Air at 70 ºF. Tolerance: ± 10%

60 Hz
Pumping speed
Technical data COBRA NC 2500 B
Max. pumping speed ACFM 60 Hz 1471
Ultimate pressure Torr 60 Hz 0.75
Nominal motor rating HP 60 Hz 100
Nominal motor speed RPM 60 Hz 3600
Sound level (ISO 2151) dB(A) 60 Hz 84
Approximate weight Lbs. 4400
Dimensions (L x W x H) inches 94 7/16 x 64 ½ x 57 ⅜
Gas inlet / outlet ANSI/NPT 6" / 4"



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