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HOWDEN ROOTS™ BLOWERS

Distributor / Representative

Authorized Repair Center
Missouri, Kansas, Iowa and Nebraska

ROOTS™ RAM™ Series

The detachable mounting feet can be switched to your required shaft configuration.
Click for instructions

RAM™ Features

> Heavy-duty unit with integral-shaft ductile iron impellers 
> Rigid one-piece casing and headplates are grey iron
> Drive end cover and end cover are aluminum
> Cylindrical roller bearings
> Detachable mounting feet
> Horizontal and vertical configurations available 

RAM™ Advantages

> Piston rings reduce air leakage
> Lip type oil seals prevent lubrication from entering the air chamber
> Hydrodynamic seal on the drive shaft prevents oil leaks
> Splash oil lubricated gears on drive and gear ends
> Carburized and ground alloy steel spur timing gears 
 

Whispair™ Units

> RAM-J (Whispair™) features longer bearing life, lower vibration, and noise reduction.
> RAM-GJ (Gas Whispair™) features mechanical seals for gas applications
> Tri-RAM Tri-lobe impellers combined with the Whispair™ discharge design, means quieter operation compared to a conventional unit operating at the same conditions.

Roots Blower 624 RAM
Roots Blower 616 RAM

Roots Blower 616 RAM

Roots Blower 409 RAM

Roots Blower 409 RAM

Roots Blower 418 RAM Right Hand Shaft

418 RAM

Right Shaft

Roots Blower 404 RAM Left Hand Shaft

404 RAM

Left Shaft

Roots Blower 617 TriRAM Top Shaft

617 Tri-RAM

Top Shaft

Roots Blower 624 RAM-GJ Bottom Shaft

624 RAM-GJ

Bottom Shaft

RAM™ & Tri-RAM Specifications

Click the model name to open a Quick Spec pdf  

Model Part Number Flow Range Max ∆PSIG Max ∆Vac RPM Range Max ∆T Conn/Shaft Oil Horz
404 RAM 821470XX to 396 CFM 18 PSI 16" Hg 850-4000 240°F 3" FPT/1.5" 55 0z.
406 RAM 821480XX to 601 CFM 18 PSI 16" Hg 850-4000 240°F 4" FPT/1.5" 55 0z.
409 RAM 821490XX to 900 CFM 18 PSI 16" Hg 850-4000 240°F 4" FPT/1.5" 55 0z.
412 RAM 851500XX to 1199 CFM 15 PSI 16" Hg 850-4000 240°F 6" FLANGE/1.5" 55 0z.
418 RAM 821510XX to 1832 CFM 10 PSI 16" Hg 850-4000 240°F 8" FLANGE/1.5" 55 0z.
612 RAM RC20516XX to 1581 CFM 18 PSI 16" Hg 636-3000 230°F 8" FLANGE/2" 145 Oz.
616 RAM 851470XX to 2162 CFM 15 PSI 16" Hg 636-3000 230°F 8" FLANGE/2" 145 Oz.
624 RAM 851480XX to 3244 CFM 10 PSI 16" Hg 636-3000 230°F 10" FLANGE/2" 145 Oz.
409 Tri-RAM RH‐20540XX to 847 CFM 15 PSI 16" Hg 850-4750 240°F 6" FLG OR RECT/1.375" 55 0z.
413 Tri-RAM RH‐20540XX to 1227 CFM 15 PSI 16" Hg 850-4750 240°F 6" FLG OR RECT/1.375" 55 0z.
416 Tri-RAM RH‐20540XX to 1412 CFM 12 PSI 16" Hg 850-4750 240°F 8" FLG OR RECT/1.375" 55 0z.
617 Tri-RAM RH‐20541XX to 2165 CFM 15 PSI 16" Hg 640-3560 230°F 8" FLG OR RECT/1.968" 145 Oz.
621 Tri-RAM RH‐20541XX to 2688 CFM 12 PSI 16" Hg 640-3560 230°F 10" FLG OR RECT/1.968" 145 Oz.
722 Tri-RAM RH‐20541XX to 3312 CFM 15 PSI 16" Hg 545-3050 240°F 10" FLG OR RECT/2.362" 225 Oz.
728 Tri-RAM RH‐20541XX to 4152 CFM 12 PSI 16" Hg 545-3050 240°F 12" FLG OR RECT/2.362" 225 Oz.
826 Tri-RAM RH‐20542XX to 4319 CFM 15 PSI 16" Hg 475-2760 230°F 12" FLG OR RECT/2.755" 376 Oz.

832 Tri-RAM

RH‐20542XX to 5399 CFM 12 PSI 16" Hg 475-2760 230°F 12" FLG OR RECT/2.755 376 Oz.
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