Description
Operating principle
Inside COBRA Industry dry screw vacuum pumps, two screw rotors rotate in opposite directions. The pumped medium is trapped between the cylinder and the screw chambers. There, it is compressed, and transported to the outlet. During this process, the screw rotors do not come in contact with each other or the cylinder.
COBRA NF
- Advanced screw design
- Dry and contact-free operating principle
- Optimized for vacuum packaging
- Easy cleaning with steam jets and conventional detergents
- Efficient water cooling
- Quiet
- Compact design
Benefits of the series
COBRA NF dry screw vacuum pumps have been specially designed for vacuum packaging. They offer fast pump-down of the packaging chamber and maximum productivity.
The patented self-balancing screw design ensures the lowest vibration levels and quiet operation.
The screws of COBRA NF vacuum pumps are manufactured from a single-piece casting avoiding any gaps. This makes an ingress of process fluids or particles impossible. Thus, corrosion and deposition are prevented.
You can easily clean COBRA NF series vacuum pumps using steam jets and conventional detergents. Because of the smooth surface design, water and detergents drain away leaving a residue-free finish.
Thanks to efficient water cooling, only ten percent of the generated heat is released into the environment.
The COBRA NC 0500 B also belongs to this series, which has been specially designed for food applications.
COBRA NC
The flexible solution for industrial vacuum applications
- Advanced screw design
- Dry and contact-free operating principle
- High vapor and particle tolerance, self-draining
- Efficient indirect water cooling
- Air cooling and various sealing and coating configurations available
- ATEX-certified versions available
Benefits of the COBRA NC series
COBRA NC is the high-performance dry screw vacuum pump. They are perfectly suited for demanding applications with maximum flexibility and modularity for process changes. COBRA NC is in use wherever gases and vapors need to be pumped reliably.
The patented self-balancing screw design ensures the lowest vibration levels and quiet operation.
The screws of COBRA NC vacuum pumps are manufactured from a single-piece casting avoiding any gaps. This makes an ingress of process fluids or particles impossible. Thus, corrosion and deposition are prevented.
COBRA NC series vacuum pumps use efficient indirect water cooling. This results in an even temperature distribution throughout the pump body. Moreover, thermal stability is ensured throughout the process.
The COBRA NC series comprises a range of application-specific versions. ATEX-certified versions for use in explosion-hazard environments are also available.
Video: How COBRA NC vacuum pumps work
COBRA NS
Leak-tight vacuum generation for demanding processes
- Advanced screw design
- Dry and contact-free operating principle
- High vapor and particle tolerance, self-draining
- Leak-tightness
- Extended service intervals
- Efficient indirect water cooling
- Quiet
Benefits of the COBRA NS series
COBRA NS is a series of high-performance dry screw vacuum pumps for demanding applications. They are in use wherever gases and vapors need to be pumped reliably, such as coating applications, helium pumping, or fluorination.
The integrated motor makes this vacuum pump series leak-tight with a leakage rate of < 5.0 · 10-5 mbar · l/s.
The bearings of COBRA NS vacuum pumps are lubricated with Busch PFPE oil. Therefore, service intervals are extended to a maximum.
The screws of COBRA NS vacuum pumps are manufactured from a single-piece casting avoiding any gaps. This makes an ingress of process fluids or particles impossible. Thus, corrosion and deposition are prevented. Optimum corrosion resistance is furthermore ensured thanks to temperature control and special coatings on the screws.
COBRA NS series vacuum pumps use efficient indirect water cooling. An even temperature distribution throughout the pump body is therefore maintained. Moreover, thermal stability during the process is ensured.
COBRA NX
The all-around solution for industrial vacuum applications
- Advanced screw design
- Dry and contact-free operating principle
- High vapor and particle tolerance, self-draining
- Efficient water cooling
- Optional air cooling
- Anti-corrosion coating
Benefits of the COBRA NX series
COBRA NX are high-performance dry screw vacuum pumps for rough and medium vacuum applications. They are in use wherever gases and vapors need to be pumped reliably.
The patented self-balancing screw design ensures the lowest vibration levels and quiet operation.
The screws of COBRA NX vacuum pumps are manufactured from a single-piece casting avoiding any gaps. This makes an ingress of process fluids or particles impossible. Thus, corrosion and deposition are prevented.
COBRA NX series vacuum pumps use efficient water cooling. An even temperature distribution throughout the pump body is therefore maintained. Moreover, thermal stability during the process is ensured.
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