AAbbreviations for alternate current and direct current. The terms AC fan and DC fan are commonly used.
The most reliable bearing system in fans. Extremely high temperature load, extremely low starting torque at low temperatures, no loss of lubricant.
This frequently refers to large radial and axial fans with dimensions that are usually much larger than 120x120mm.
The running in of fans reduces the otherwise unavoidable early failures and thus increases the reliability of a fan. The burn-in process of SEPA® fans is integrated in the production process so that errors that may occur, immediately result in "Corrective Action" and do not reach the customer.
Heat sink that dissipates heat produced by smaller processors or chips. Mainly as active heat sink with integrated fan.
Heat sink that dissipates heat produced by processors. Mainly active heat sinks, i.e. heat sinks with attached fans or fans integrated in the heat sink.
Protective guard with shield, to highly reduce unwanted emission (or influence) of high frequency radiation. The airflow performance is reduced by approx. 10-15%. EMC filter and dust protection filters are also available as combination parts.
Electromechanical component for creating airflow that dissipates air heated by thermal loss in a device. In comparison to convection, the heat output is improved by factor 3. Depending on the design, the airflow can be discharged axially (straight through the fan) or radially (discharged at the side).
A term for components that are additionally required for a fan: Finger guard, filter grid, EMC guard, connecting cable, etc.
Protective grid with a replaceable dust filter that protects the fan and the device against dust collecting quickly in an environment that is subject to a high accumulation of dust. The airflow performance is reduced by approx. 25% by a filter guard.
Safety device of wire or plastic for protecting against injuries to fingers in large fans or for protecting against damage in small fans. The airflow performance is reduced by approx.
Sintered sleeve bearing systems are also available under different trademarks. The lubrication effect is similar to the typical sintered bearing. Especially treating the shaft and bearing tube can achieve extremely stable lubrication with a lower influence of temperature and wear. An economical solution for medium requirements.
Special shape of a fan where the air is suctioned in axially, turned 90°, radially, and thus discharged vertical to the axis. Also known as a Turbofan. The distinguishing features of radial fans are their extremely high compression rigidity, which renders them especially suitable for ventilation of heat sinks and general cooling applications where space is limited.
Acronym for the terms, Silent, Economic, Powerful, Advanced
Sleeve bearings of porous, sintered iron or bronze alloys are used in fans. The liquid lubricant is stored in the sintered pores and is discharged when the shaft rotates. Due to the hydrodynamic effect, a lubricant cycle is created that only functions freely in a relatively tight temperature range (approx. 0-60°C). Due to surface errors, micro-contamination and natural wear during running the fan in and running down, reliability is considerably lower than with ball bearings. It Sleeve bearings however, are frequently used thanks to their extremely favourable price.
