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NES COMPANY - ENGINEERED VACUUM SYSTEMS

NRB Series – Roots-Type Blowers – 220 to 9300 CFM

Standard construction of the NRB Series is cast iron, with vast options to select between metallurgy, power rating, capacity, vacuum level, pressure level, and sizing. The five-point bearing design improves the load on the bearing during operation, and the double oil tank provides both cooling and lubrication to the bearings, keeping operating temperatures lower and pushing efficiency higher. Lip seals, mechanical seals, and labyrinth seals are available for selection, and NES Company Inc. offers the optional NRB Series gas-tight design to keep the discharge gasses free of contamination and reduce total oil consumption. Synchronous gears are secured on the driving side of the blower to prevent torsional stresses from damaging the blower. In all, the NRB Series is built to last and to operate without issue.

About NRB Series – Roots-type Blowers

Models: NRB 3206, 3210, 4009, 4012, 5507, 5511, 5514, 5518, 7017, 7021, 7026, 9027, 1230, 1248
Capacity range: 220 to 9300 CFM
Power range: 4 to 400 HP
Max vacuum: 576 mbar
Max pressure: 1034 psig


Features

Five-point bearing design
Double oil tank
Synchronous gears
Helical gear design
Array of seals for selection
Optional gas-tight design
Robust construction
Wide capacity range for various applications
One (1) year warranty against manufacturing defects


Applications

Tail Gas Conveying, Steam Recompression, Thermoforming, Vacuum Tables, Aquaculture, Fogging Applications, Cement and Lime,. Biodiesel Plants, Dust Collection

Download Spec Sheet

NRB Series – Roots-Type Blowers

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Model Max Flow Capacity Max Vacuum Level Max Pressure Level Shaft Power Max Rotation Inlet Flange Outlet Flange
CFM mbar mbarg HP RPM ANSI ANSI
NRB3206 220 508 1034 4 3600 3″ 3″
NRB3210 368 508 1034 30 3600 4″ 4″
NRB4009 496 576 1241 45 3600 4″ 4″
NRB4012 682 508 1034 50 3600 4″ 4″
NRB5507 794 576 1241 75 3600 6″ 6″
NRB5511 1172 576 1172 85 3600 6″ 6″
NRB5514 1523 508 896 100 3600 6″ 6″
NRB5518 1965 508 689 100 3600 8″ 8″
NRB7017 2800 508 1034 225 3000 10″ 10″
NRB7021 3500 508 1034 250 3000 12″ 12″
NRB7026 4300 508 827 250 3000 12″ 12″
NRB9027 5320 508 1034 375 2400 14″ 14″
NRB1230 9073 406 620 385 1800 14″ 14″
NRB1248 9300 339 413 400 1500 20″ 20″

Roots-Type Blowers, speak to a representative.

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