Tech Talk

Roots Blower Manufacturers

The term “roots blower” is often used as a general term to describe any straight lobe positive displacement blower, however there is only one manufacturer of Roots™ blowers. Roots has its main manufacturing facilities, including the original Roots factory, in...

Food Grade Roots Blower Oil

If your application requires your Roots blowers to use food grade oil, we have several options available. These synthetic lubricants meet the H1 requirements for food grade lubricant. Originally created by the USDA, the lubricant safety standards are now determined...

Safety requirements for food grade machine oil

Blowers and vacuum pumps are frequently used in food production, creating pressure or vacuum in pneumatic conveying systems that move food ingredients through piping systems. Our equipment packages have been used to move dry materials like wheat, flour, sugar, and...

Lubrication Requirements for Common Blower Models

The most critical ingredient to blower maintenance is proper lubrication. You can find the recommended lubrication guidelines in your blower’s operating manual. We have compiled guidelines here for quick reference. Use the links below to jump to a specific section:...

Protecting a blower from corrosion

If your application involves a corrosive process gas, you may find that your blowers quickly need to be replaced as the interior components of the blower are corroded over time by the gas. In these applications, special coatings or materials...

Blower Silencer Comparison

To select the right silencer for your pressure or vacuum application, the two important criteria are the silencer type and the silencer size. This page covers the series of blower silencer available.

Types of Blower Silencers

Blower silencers are used to reduce both noise and vibration. Learn about the differences between Chamber, Absorptive, and Chamber-Absorptive silencers to identify the silencer that is right for your application.

How to Clean Blower Filters

Keeping your blower filter clean is an important part of ongoing blower maintenance. A brand new filter should have a pressure drop of between 2 to 3″ w.c. (water column). Once the pressure drop exceeds 10 to 15″ w.c., the filter...

How To Identify Your Blower Model

If you are not sure which model of blower you may have in your facility, there are several ways to identify your unit or gather information that will help with the identification.

Sutorbilt 8000 Blower Series Performance Data

Pressure and Vacuum performance data for the Sutorbilt 8000 series of bi-lobe positive displacement blowers produced by Gardner Denver.

Blower Configurations

Many positive displacement blowers and vacuum pumps can be configured in different orientations to work with the flow of air or gas in your system. Both the Roots Universal RAI series and Roots RAM series have this capability. For other...

The Effect of Temperature on Blower Lubrication

Proper lubrication is the most important factor to long life for any blower or vacuum pump. Blowers require a good grade of industrial type, non-detergent, rust inhibiting, anti-foaming oil of the correct viscosity. Automotive type lubricants are NOT recommended as...

Overhung Load for Roots Positive Displacement Blowers

Proper V-Drive selection is essential to achieve maximum life for your blower and vacuum pump. Improper sizing or installation of a v-belt drive can shorten the life of the blower or even cause failure. Roots has provided a means to...

Lubrication Points for Roots Universal RAI®

Lubrication Points on the Roots Universal RAI® in Vertical and Horizontal configurations

SCFM (Standard CFM) vs. ACFM (Actual CFM)

Calculation Method to convert SCFM (Standard Cubic Feet per Minute) to ACFM (Actual Cubic Feet per Minute). The calculation is based on standard conditions of 68°F, 36% relative humidity (RH) and 14.7 PSIA.

Volume and Mass Flow Calculations for Gases

This article provides equations and examples on how to convert mass flow to volumetric flow. These equations can be used in conjuction with SCFM and ACFM calculations.

Positive Displacement Blower Calculations

Now days we have computer programs that can calculate positive displacement blower performance. They are a time saver and can quickly give you many options. Before selection programs, performance was calculated by hand to determine required performance. These equations will...

Lubrication for Rotary Lobe Blowers

Proper lubrication is the key to a long life for your blowers.

Roots URAI Performance Data

Roots Universal RAI® (URAI) Performance Data includes cfr, 1 PSI Slip, Max ΔT, Shaft Diameter, Max ΔP and maximum vacuum. You can calculate any performance point with this data.

Sutorbilt Legend ® L Series Performance Data

Sutorbilt® Legend® L series performance data including cfr, slip, max allowable temperature rise, max allowable differential pressure, max allowable differential vacuum, shaft size and connection sizes. This is for the "L" series. As of this publication, Gardner Denver currently manufacturers...

Sutorbilt Blower Legend Series “P” Performance Parameters

This article summarizes the performance parameters of the Sutorbilt Blower Legend "P" Series positive displacement blowers and vacuum pumps. The feature changes between the "L" Series and "P" series are also provided that permit higher speeds, higher differential pressures and...

Glossary

This glossary provides definitions to terms commonly used in blower and vacuum pump applications.

The Optimal Blower Systems Configuration

The best orientation for a rotary positive displacement blower is in a horizontal configuration. The horizontal configuration can be described as vertical airflow or you can draw a line between the shaft ends. If the line is horizontal it is...

Industrial Noise Reduction

How to calculate a noise level at a distance other then where it is measured. This is a handy method to determine how much noise reduction you will achieve as you move further away from the noise source.

Universal Air Filter Element Service Instructions

How and when to clean and maintain your paper, felt and wire mesh air filter elements.

Roots EasyAir RAM-X Blower Replacement

The Roots EasyAir or EAX line of OEM blower packages often include a tri-lobe blower. Originally this was the RAM-X series of blowers, until 2016 when these were replaced by the TRI-RAM blower series. The RAMX blowers featured rectangular connections...