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Petrochemical Plant

The machine components used in this sector – such as pumps, compressors, electric motors, blowers and ventilators – are particularly susceptible to change. These components contain bearings which have to work reliably and precisely, even in challenging conditions.

Our Application Engineers are in touch with the research and development teams at OEMs and have the expertise to work with you on developing solutions that effectively cut costs and boost productivity. 

Centrifugal Pumps

Pump applications place a great deal of strain on bearings, meaning that the materials used for bearings and bearing cages have to withstand tough conditions.
The bearings have to support axial, radial or combined loads, run equally reliably at low and high speeds (1,500 rpm to 3,000 rpm) and handle different lubrication conditions with ease.

NSKHPS Angular Contact Ball Bearings

Designed for industrial machinery and applications in pumps and compressors: easy handling, long-life, low vibration and quiet running.  >>

High Capacity - HR Series

Larger rolling elements increase the dynamic load rating - helping improve machinery life performance.  >>
 

EM Series Roller Bearings

Features high load ratings and quiet running with precision machined tough one-piece cage.  >>

EW Series Roller Bearings

Features high load carrying capability and high performance pressed steel cage.  >>

BMPC Angular Contact Ball Bearings

BMPC bearings designed to meet the rigorous demands of centrifugal pumps.  >>

Double Row Angular Contact Ball Bearings

The sealing system of double row angular contact ball bearings prevents the ingress of dirt and ensures an optimum service life. >>
Submersible Pumps
 

The double-row angular contact ball bearing must withstand axial and radial loads, while the deep groove ball bearing is only subject to light radial loads.

It is important to avoid creep (relative motion) between the outside diameter and housing of the top bearing.

 

LNG Pumps

LNG - Liquefied Natural Gas

Liquefied natural gas (LNG) pumps are used to load/unload cryogenic liquids in tanks.

The bearings used here must be able to withstand a liquid gas temperature of −162°C and are partly lubricated by the pumping medium.

Creep-Free Bearings

Tensioned O-rings mounted in the bearing outer ring improve creep prevention under rotating loads. The product offers easy assemble and the possibility of reusable housings.  >>

High Capacity - HR Series

Larger rolling elements increase the dynamic load rating - helping improve machinery life performance.  >>
 

EM Series Roller Bearings

Features high load ratings and quiet running with precision machined tough one-piece cage.  >>

EW Series Roller Bearings

Features high load carrying capability and high performance pressed steel cage.  >>

NSKHPS Angular Contact Ball Bearings

Designed for industrial machinery and applications in pumps and compressors: easy handling, long-life, low vibration and quiet running.  >>

Double Row Angular Contact Ball Bearings

The sealing system of double row angular contact ball bearings prevents the ingress of dirt and ensures an optimum service life. >>

LNG Pump Bearings

LNG Pump bearings designed to cope with the applications tough operating conditions & extreme temperatures.  >>

Roots Blowers


Roots blowers are rotary piston blowers which are often used to transport gas. The gas is carried from the intake side to the exhaust between the lobes of the rotors and the outer wall and compressed by the backflow.
This can generate some vibrations, which bearings must be capable of withstanding.

 

Oil-Injected and Oil-Free Compressors



Two screws are used to compress gases. The gas enters on the inlet side and flows through the threads while the screws rotate. As the compression space becomes smaller, the gas is compressed.
This process requires bearings that can withstand high radial and axial loads and enable precise shaft positioning.

EW Series Roller Bearings

Features high load carrying capability and high performance pressed steel cage.  >>

Double Row Angular Contact Ball Bearings

The sealing system of double row angular contact ball bearings prevents the ingress of dirt and ensures an optimum service life. >>

L-PPS cage for screw compressors

Designed with L-PPS cage to offer superior wear & heat resistance.  >>

Angular Contact Ball Bearing - Outer Ring Guided Brass Cage

Specifically designed to match the tough operating conditions found in oil-free screw compressors.  >>

4 Point Contact Ball Bearing with outer-ring brass cage (QJ Series)

Designed to reduce heat generation, vibration & noise in oil-free screw compressors.  >>

Cylindrical Roller Bearings with Outer Ring guided Brass Cage

Specially designed to meet the tough operating conditions found in oil-free screw compressors. >>

Conveyor Belts

Conveyors

In the petrochemical industry, conveyor belt systems are often used to transport raw materials. 
This places high demands on the bearings’ resistance to factors such as temperatures and contamination. 


Ventilators

Fan

Ventilators are needed for a wide range of cooling processes. 
In most cases, these involve high speeds and temperatures that can reach up to 200°C. 


Electric Motors 

Electric motors

Electric drives for pumps, compressors, blowers and conveyor belt systems have to withstand high operating temperatures and high speeds.

Self-Lube® HLT Inserts

These inserts provide opportunities to reduce maintenance, downtime and replacement costs in operation at extreme temperatures.  >>

NSKHPS Series Roller Bearings

NSKHPS series or high performance standard uses state of the art material technology bearings, offering high speed & load ratings.  >>

High Temperature Sealed Deep Groove Ball Bearings

Specially created to run in a contaminated environment, and under high temperatures, up to 150°C.  >>
  • Technical Tools - Bearings

    Keep your bearings in good shape with NSK's technical tools, including the NSK Calculation Tools and CAD Drawings. >>

  • Troubleshooting

    Don't let your bearings fail prematurely or unexpectedly. Save yourself trouble and money with the NSK troubleshooting tools. >>

  • Technical Enquiry

    Looking for a new solution? Fill out the technical enquiry form and one of the NSK technical team members will provide assistance as soon as possible. >>

Downloads

Ball Bearing Units

Self-Lube Bearings, J-Line Bearing Units, Silver Lube, Molded-Oil, Life-Lube, Interchange list, Conversion tables

Bearings for the Petrochemical Industry

Centrifugal Pumps, Roots Blower, Compressors

Bearings for Pumps and Compressors

Special Deep Groove Ball Bearings for Pumps, NSKHPS Angular Contact Ball Bearings, Special Bearings for Screw Compressors

Double-Row Ball Bearings - Customised Ball Bearings

Self Aligning Ball Bearings, Deep Groove Ball Bearings (Double Row), Angular Contact Ball Bearings (Double Row), Pulleys

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