Positive Displacement Blowers & Vacuum Pumps

For more than 60 years the CycloBlower Industrial Series has offered significant design advantages with proven results through efficiency, quality & dependability.

High performance, high efficiency



  • The most energy efficient PD Blower
  • Higher pressure & vacuum performance capabilities
  • Proven performance & dependable quality
  • Reduced pulsation & noise levels
  • Oil-free air/gas delivery
  • Efficient, shock-free compression
  • Long service life
  • Engineered for greater performance in continuous duty applications

Optimum Efficiency, Proven Results

Rotors – Helical four-flute gate rotor and two-lobe main rotor are illed from high tensile strength ductile iron, stress relieved and dynamically balanced.

Housing – One piece, high strength housing resists deflection to retain accurate running tolerances between rotors. Contoured porting provides smooth air flow.

Bearings – Anti-friction bearings carry the shaft loads in all models. CycloBlowers use pairs of angular contact ball bearings on the discharge end and cylindrical roller bearings or single-row ball bearings on the gear end. (Not standard on 3CDL models.

Timing Gears – Synchronization of rotors is through a pair of helical timing gears. Precision alloy steel gears provide quiet, accurate peration

Air/Gas Seals – Labyrinth-type shaft seals provide a minimum of controlled leakage of air or gas. Purged labyrinth seals or mechanical seals are available with units handling gas, where leakage cannot be tolerated. (Mechanical seals not available on 3CDL and A5CDL models.)

Dual-Splash Lubrication – Gears and bearings are lubricated by a plash oil system. (Not standard on A5CDL models.)

Oil Seals – All CycloBlowers are fitted with proprietory bearing isolator seals. Our unique design developed in partnership with Inpro/Seal offers outstanding performance and longevity.(Not available on the 3CDL and A5CDL models.)

Quality Promise

  • Gardner Denver industrial blowers are manufactured under rigid ISO 9001 quality standards
  • All models are thoroughly tested to meet the highest performance standards for unequaled service lif under the most severe operating conditions

Service Information

  • Great Blower Warranties
  • Dedicated, Authorized, Factory-Trained Blower Distributors
  • Genuine Blower Replacement Parts
  • 24-hour Blower service support