The RAM Series positive displacement blowers are designed with advanced features to ensure superior performance and durability. Available in both horizontal and vertical configurations, these blowers provide improved volumetric efficiency and reduced operating temperatures, making them ideal for a wide range of applications.
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RAM
Pressures to 18 psig (1240 mbar)
Vacuums to 16” Hg (539 mbar)
Flows to 3,550 cfm (6030 m3/hr)
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RAM-J
Pressure to 18 psig (1240 mbar)
Vacuum to 16” Hg (539 mbar)
Flows to 3550 cfm (6030 m3/hr)
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RAM-VJ
Vacuum to 24” Hg (813 mbar)
Flows to 3550 cfm (6030 m3/hr)
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RAM-GJ
Pressure to 18 psig (1240 mbar)
Vacuum to 16” Hg (539 mbar)
Flows to 3550 cfm (6030 m3/hr)
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RAM-DPJ
Pressure to 30 psig (2068 mbar)
Flows to 670 cfm (1140 m3/hr)
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RAM-DVJ
Vacuum to 27” Hg (910 mbar)
Flows to 2400 cfm (4077 m3/hr)
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RAM-TRI-RAM
Pressures to 15 psig (1034 mbar)
Vacuum to 16” Hg (539 mbar)
Flows to 5810 cfm (9870 m3/hr)
Precision Engineering
Our rotary lobe blowers are manufactured using high‑quality materials and precise engineering practices:
- Alloy steel timing gears are carburized, ground, taper‑mounted, and secured with a locknut for long‑term reliability.
- Cylindrical roller bearings provide robust shaft support for heavy‑duty operation.
This engineering foundation ensures consistent performance in demanding industrial environments.
Key Advantages of the RAM Rotary Positive Blowers
Advanced Sealing Technology
To maintain clean, efficient operation, the RAM Series incorporates multiple sealing systems:
- Piston Ring Air Seals minimize air leakage through headplate shaft openings.
- Lip‑Type and Hydrodynamic Oil Seals prevent lubricant contamination and protect against drive‑end oil leakage.
Reliable Lubrication
Both ends of the blower use splash oil lubrication, supporting smooth operation, reduced maintenance, and extended equipment life.
Operational Excellence
RAM blowers are built for durability and performance:
- Integral‑shaft ductile iron impellers with an involute profile for efficient airflow
- Grey iron headplates and a one‑piece casing for structural integrity
- Die‑cast aluminum drive‑end and gear covers to reduce installation cost and simplify service
Versatile Installation
Detachable, rugged steel mounting feet allow flexible installation in vertical or horizontal configurations. Side‑outlet blowers include an extended top shaft, and either shaft can be extended to meet application requirements.
RAM Blower Operating Principle
The RAM Series uses figure‑eight lobe impellers mounted on parallel shafts rotating in opposite directions. As each impeller passes the inlet, it traps a fixed volume of air and transports it around the casing to the outlet.
Because the blower operates at constant speed, the displaced volume remains consistent regardless of pressure, temperature, or barometric changes. Timing gears maintain precise impeller positioning, ensuring lubrication‑free operation inside the air chamber.
What Is an Industrial Rotary Lobe Blower?
An industrial rotary lobe blower is a positive displacement machine that moves a fixed volume of air or gas with each rotation. It is widely used in applications requiring reliable, pulse‑free airflow.
How the RAM Series Fits the Category
Based strictly on the provided content, the RAM Series qualifies as an industrial rotary lobe blower because it features:
- Figure‑eight rotary lobe impellers
- Positive displacement airflow
- Heavy‑duty construction suitable for industrial environments
- Advanced sealing and lubrication systems
- Flexible mounting for varied installation needs
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Cost effective design
Pressures to 15 psig (1034 mbar)
Vacuums to 16” Hg (542 mbar)
Flows to 2460 cfm (4180 m3/hr)
Available with metric driveshaft and pipe connections
Universal RAI-G
Pressures to 15 psig (1034 mbar)
Vacuums to 16” Hg (539 mbar)
Flows to 1740 cfm (2956 m3/hr)
PD Blowers
Rotary blowers featuring a compact and sturdy design, engineered for continuous use with exceptional reliability, making them ideal for demanding industrial applications. Their robust construction ensures long-lasting performance, while their efficient operation minimizes maintenance needs and downtime.
Trusted Experts
Choose reliability, advanced engineering, and operational efficiency tailored to your most demanding applications. Contact us today to learn more and find the right PD blower solution for your needs.
Roots® is the original inventor of the rotary lobe blower and has delivered high‑performance solutions for over 170 years across industries including water and wastewater treatment, food processing, chemical processing, and power generation.
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