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Roots RAM Series

Roots RAM blowers deliver robust bi-lobe design optimized for higher-pressure industrial duty, with flows from 298 to 3,244 ICFM across 7 frame sizes (404–624). Operating continuously to 18 PSIG and 16 in.Hg vacuum, RAM units feature integral-shaft ductile iron impellers, piston ring seals, and proven oil lubrication. Ideal for pressure-intensive applications such as wastewater treatment aeration, pneumatic conveying under load, and industrial forced-air systems where consistent, reliable operation is critical.

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New to Roots blowers? See our Industrial Rotary Lobe Blower overview

Roots Blowers

RAM Models (7)

Roots RAM 404 — Roots RAM positive displacement blower

Roots RAM 404

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

298 ICFM at 18 PSIG

Roots RAM 406 — Roots RAM positive displacement blower

Roots RAM 406

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

601 ICFM at 18 PSIG

Roots RAM 409 — Roots RAM positive displacement blower

Roots RAM 409

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

900 ICFM at 18 PSIG

Roots RAM 412 — Roots RAM positive displacement blower

Roots RAM 412

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

1,400 ICFM at 18 PSIG

Roots RAM 418 — Roots RAM positive displacement blower

Roots RAM 418

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

2,950 ICFM at 10 PSIG

Roots RAM 616 — Roots RAM positive displacement blower

Roots RAM 616

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

2,162 ICFM at 15 PSIG

Roots RAM 624 — Roots RAM positive displacement blower

Roots RAM 624

Bi-lobe higher-pressure industrial rotary PD blower for demanding applications

3,244 ICFM at 10 PSIG

Need a Roots RAM quote?

Authorized Roots distributor since 1961. Tell us your CFM, pressure, and application — we'll size the blower, quote the package, and support it for the life of the unit. See our Roots service center.

Request a Quote Call (800) 955-6188

RAM Series Specifications

Capacity Range: 298–3,244 ICFM across frame sizes 404–624
Max Pressure: 18 PSIG
Max Vacuum: 16 in.Hg
Max Speed: 4000 RPM (smaller frames); 3000 RPM (larger frames)
Connection Sizes: 2.0 in. to 12 in. depending on frame size
Gearing: Carburized and ground alloy steel spur gears

Typical Applications

Wastewater aeration under pressure
Pneumatic conveying of dense materials
Industrial forced-air systems
High-pressure gas supply
Pressure-boosting applications
Continuous industrial duty cycles

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