Vacuum Producers

All of the Spencer blower types are equally useful as vacuum producers for systems that “pull” rather than “push” air. This latitude is sure to meet any desired vacuum and volume performance level.

Standard Overhung Fabricated Multistage Centrifugal

Our most popular design, thousands and thousands sold since 1905. The SOH has impellers mounted on an extended motor shaft. The simple two-bearing design reduces maintenance.

  • Vacuum: to 8″ Hg
  • Volume: to 7,000 ICFM
  • Power: to 150 HP

Four Bearing Overhung Fabricated Multistage Centrifugal

Impellers are mounted on the vacuum producer shaft, which is coupled to a standard shaft motor. Rotating elements are supported by a rigid bearing bracket.

  • Vacuum: to 10″ Hg
  • Volume: to 8,000 SCFM
  • Power: to 250 HP

Four Bearing Outboard Fabricated Multistage Centrifugal

For higher pressure applications. Impellers are mounted between supporting bearings. Outboard bearings are a matched set, one for radial loads, the other for thrust loads. Inboard bearing absorbs a share of the radial load. The vacuum producer is coupled to a standard shaft motor.

  • Vacuum: to 14″ Hg
  • Volume: to 15,000 SCFM
  • Power: to 1250 HP