INDUSTRIAL PUMPS
Choose performance

They come in all types. They differ in size, technology implemented and materials used. Each application and each product pumped (water, gas, corrosive fluid, etc.) has its own specific requirements. A model designed to circulate drinking water in a home fits in your hand, while those used on an oil platform are several meters long and weigh several tons.

There are two major families:

• Centrifugal pumps that rotate the fluid to be pumped by circulating it through an impeller rotating at a high or low speed.
  
  
• Positive displacement pumps that mechanically displace volumes of fluid trapped in the system. The volume per revolution is fixed and theoretically constant regardless of the outlet pressure, inlet vacuum or fluid properties. There are two types:
      - Reciprocating with piston, plunger or diaphragm
      - Rotary with gears, sliding vanes or lobes

We provide you with:

• A wide range of standard bearings with superior performance, offering operational reliability and unmatched cost efficiency
• Experts at your service from the earliest design stages
• Proven simulation tools to meet your performance requirements
• Tailor-made solutions for special applications
• All this combined with a wide range of services: On-site technical support for operators, a comprehensive range of lubrication, maintenance tools, as well as customised training.

Ball bearings

Ball bearings are most commonly used, especially in medium and small pumps.

Their advantages: excellent performance at high speed and low friction.

• Deep-groove ball bearings (or radial contact bearings)
• Single row angular contact ball bearings usually mounted in back-to-back paired arrangements
• Double row angular contact bearings.

Plus a wide choice of options:

• High precision bearings
• Wide range of sealing
• Optimisation of internal geometry and contact surfaces
• High-quality balls
• High level of steel cleanliness
• Improved materials
• Suitable heat treatments
• Optimised cages

Cylindrical roller bearings

Cylindrical roller bearingsare suitable for high radial loads and high speeds.
Typical application: radial floating bearing in process pumps with axial suction.
Their detachable components make mounting easier.
The most common configurations are the NU and NUP types.

Tapered roller bearings

Tapered roller bearings are used for high combined radial and axial loads, such as in slurry pumps in the mining industry.

Frequently mounted in pairs in back-to-back or face-to-face arrangement depending on the loads applied.

Spherical roller bearings

Spherical roller bearings are selected for their ability to handle high axial and radial loads and their ability to operate under misalignment conditions.
Suitable for low rotation speeds.

Innovationsand high quality

This is typically a very high-tech market, aiming to achieve maximum efficiency, and to limit failures and energy consumption.

NTN-SNR provides advice and constant support at every stage of your development.

• A lot of flexibility in the search for the best compromises (tests, expertise)
• A robust system to guarantee traceability and quality,
• Optimised surface treatment developments,
• Hybrid solutions (ceramic balls),
• High temperature grease development, compatible with the pumped gases.