Screw Blowers
Oil-free air at a lower power bill: the efficiency upgrade for hard-worked aeration duty.
What they are
Rotary screw machines compress air internally, so they use noticeably less power than a conventional lobe blower at the same duty. On a works that aerates around the clock, the energy saving usually pays for the machine.
What we do
- Energy appraisals: we tell you honestly whether a screw swap pays back on your duty.
- Servicing and repairs across all major makes.
- Supply of new and refurbished screw packages.
- Hire units to bridge delivery or trial the duty.
Getting the choice right
A screw blower earns its keep on running hours, so the buying question is simple: what does the duty cost in power today, and what would the same air cost through a screw? On round-the-clock aeration the gap usually sets a clear payback date. On a duty that runs two hours a day, it may never pay, and we'll say so.
Check the turndown range against your real demand curve, and take the noise and heat figures for the whole package, not the bare airend.
What goes wrong
- Efficiency fading: a worn airend or slipping drive. The power meter notices before anyone's ears do.
- Discharge temperature alarms: check cooling and ventilation first, the airend second.
- Inverter trips: often the package electronics rather than the machine. Diagnosis before parts.
- A new whine under load: gear or bearing wear developing. Worth catching early.
Typical duties
continuous aeration, process air where the power bill leads the decision.
Need help choosing or fixing a blower?
Straight answers on sizing, faults and replacements, from engineers who work on every make.