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ROOTS™ RCS-J 821 WHISPAIR Rotary Positive Displacement Blower

Model: RCS-J 821

The ROOTS™ RCS-J 821 WHISPAIR rotary positive displacement blower is engineered for high-capacity industrial airflow systems that demand reliable performance with reduced operating noise. Delivering airflow up to 3815 CFM, this heavy-duty blower combines advanced WHISPAIR pressure equalization technology with precision ductile-iron impellers to maintain smoother airflow while lowering power consumption. Its rugged grey iron casing, carburized alloy steel timing gears, and splash-lubricated internal components provide dependable durability for continuous operation in demanding processing facilities.

Key Specifications
Max Flow
3815 CFM
Max Pressure
15 PSI
Max Vacuum
16″ Hg
Maximum Speed
2250 RPM
Manufacturer
Roots
IO&M Manuals
Literature

Technical Details

The ROOTS™ RCS-J WHISPAIR blower series features a heavy-duty one-piece grey iron casing engineered for dependable industrial airflow performance. Precision carburized alloy-steel timing gears, cylindrical roller bearings, and thrust-control design help maintain stable operation under continuous load conditions while piston-ring air seals assist in minimizing internal leakage.

Model: ROOTS™ RCS J 821
Flow Range: Up to 3815 CFM
Max Δ Pressure: 15 psi
Max Δ Vacuum: 16″ Hg
Maximum RPM: 2250
Minimum RPM: 477
Max ΔT: 230°F
Inlet Connection: 12″
Discharge Connection: 10″
Shaft Diameter: 2.75″
Drive End Lubrication: Oil
Gear End Lubrication: Oil
Required Oil Horizontal Unit: 13.5 pints Gear End
Required Oil Horizontal Unit: 7 pints Drive End
Required Oil Vertical Unit: 9.5 pints Gear End
Required Oil Vertical Unit: 5 pints Drive End
Unit Weight: 1800 pounds (818 kg)

ROOTS™ RCS J 821 Design and Features

Quieter airflow performance with advanced WHISPAIR technology
Durable ductile iron impellers for steady airflow delivery
Precision alloy steel timing gears for smooth operation
Heavy duty roller bearings built for demanding workloads
Piston ring seals help reduce internal air leakage
Oil seals help keep airflow clean and protected
Splash oil lubrication supports long component life
Efficient airflow performance for industrial applications
Available in horizontal and vertical configurations
Rugged grey iron construction for dependable durability