The Pump B₁₀ Bearing Life (also known as L₁₀ Bearing Life) equation calculates a pump's B₁₀ Bearing Life given it's Rated Life (L_rated), Rated Speed (S_rated), New Speed (S_new), Rated Pressure (P_rated) and New Pressure (Pnew).

INSTRUCTIONS: Choose units and enter the following:

• (L_rated) Rated life of the pump
• (Srated) Rated speed of the pump
• (S_new) New speed of the pump
• (P_rated) Rated pressure of the pump
• (P_new) New pressure of the pump

Description

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.^[1]

Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work by moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, come in many sizes, from microscopic for use in medical applications to large industrial pumps.

Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis.

Single stage pump – When a casing contains only one revolving impeller, it is called a single stage pump.

Double/multi-stage pump – When a casing contains two or more revolving impellers, it is called a double or multi-stage pump.

Bearings are often specified to give an "L10" life (outside the USA, it may be referred to as "B10" life.) This is the life at which ten percent of the bearings in that application can be expected to have failed due to classical fatigue failure (and not any other mode of failure like lubrication starvation, wrong mounting etc.), or, alternatively, the life at which ninety percent will still be operating.The L10 life of the bearing is theoretical life and may not represent service life of the bearing. Bearings are also rated using C₀ (static loading) value. This is the basic load rating as a reference, and not an actual load value.

Related Equations

Industrial Fluid Equations Collection

References

This description was obtained from wikipedia.