RAM™ J Positive Displacement Blowers

RAM™ WHISPAIR™ rotary blowers are heavy-duty units designed with integral-shaft ductile iron impellers having an involute profile. WHISPAIR blowers reduce noise and power loss by utilizing an exclusive wrap-around plenum and proprietary WHISPAIR jet to control pressure equalization feeding backflow in the direction of impeller movement, thereby aiding rotation.

More Information

Features

Low noise level, less operating power required
Improved volumetric efficiency and reduced operating temperatures
Alloy steel timing gears
Cylindrical roller bearings
Piston ring air seals
Lip-type, hydrodynamic oil seals
Splash oil lubrication
Horizontal and vertical configurations available

Engineering Resources

Engineering resources:
Pressure curves: ramj_drwg_pcurve_imp.pdf,
Vacuum curves: ramj_drwg_vcurve.pdf,
Dimension drawings: ramj_drwg_dimensions_imp.pdf,
Assembly drawings: ramj_drwg_assmblydrwgs.pdf,
Parts lists: ramj_tab_partslist.pdf.

Warranty

The Warranty Policy and Procedure WP-5020 presents an exception condition to the standard General Terms of Sale, GTS-5001, warranty statement for the following products:URAI, URAI DSL, URAI-J and URAI-J DSL in gear diameters of 2-1/2 - 7 inch. RAM and RAM-J in gear diameters of 4-1/2 - 6 inch. RAM-X all models. RCS and RCS-J in gear diameters of 7 and 8 inch. EasyAir 8000 all sizes. EasyAir X2 models 50, 65, 100, 150, 200, 250 and 300.

wp_5020_rev7.pdf,
gts_5001_020107.pdf

Operating Principle

Incoming air is trapped by the impellers. Simultaneously, pressurized air is being discharged (right). As the lower impeller passes the wrap-around flange, WHISPAIR™ jets equalize pressure between trapped air and the discharge area, aiding impeller movement and reducing power requirements. Impellers move air into the discharge area (right). Backflow is controlled, resulting in reduction of noise relative to conventional blowers.

whspair_princ_op.pdf

Locate Distributor

Find a distributor near you!

Dresser Roots