ROOTS™ RCS J 721 WHISPAIR Rotary Positive Displacement Blower
Model: RCS J 721 WHISPAIR
The ROOTS™ RCS J 721 WHISPAIR rotary positive displacement blower is built for facilities that need high volume airflow with smoother, quieter operation during continuous production cycles. With capacities reaching 3125 CFM, this industrial blower combines durable ductile-iron impellers, precision-timed alloy-steel gears, and advanced WHISPAIR airflow technology to improve operating efficiency while reducing internal pressure pulsations. Its rugged grey iron construction and splash-lubricated design help deliver dependable long-term performance in demanding plant environments.
Technical Details
ROOTS™ RCS J WHISPAIR blower series
Model: ROOTS™ RCS J 721
Flow Range: Up to 3125 CFM
Max Δ Pressure: 15 psi
Max Δ Vacuum: 15″ Hg
Maximum RPM: 2600
Minimum RPM: 545
Max ΔT: 230°F
Inlet Connection: 12″
Discharge Connection: 10″
Shaft Diameter: 2.375″
Drive End Lubrication: Oil
Gear End Lubrication: Oil
Required Oil Horizontal Unit: 155 ounces Gear End
Required Oil Horizontal Unit: 70 ounces Drive End
Required Oil Vertical Unit: 80 ounces Gear End
Required Oil Vertical Unit: 40 ounces Drive End
Unit Weight: 1200 pounds (545.5 kg)
ROOTS™ RCS J 721 Design and Features
Engineered for quieter airflow performance with improved operating efficiency
Proprietary WHISPAIR technology helps reduce pressure fluctuations and power loss
Heavy-duty alloy steel timing gears support continuous industrial operation
Cylindrical roller bearings help improve reliability under demanding loads
Piston ring air seals assist in minimizing internal air leakage
Lip-type oil seals help prevent lubricant migration into the air chamber
Splash oil lubrication protects internal components at both ends of the blower
High volumetric efficiency supports consistent industrial airflow performance
Compatible with both horizontal and vertical installation requirements
Rugged mounting feet provide added installation flexibility in the field