Rpm (disambiguation)

rpm or RPM may mean:

• An acronym for 'revolutions per minute', rpm is a unit of frequency, commonly used to measure rotational speed.
  • Gramophone (phonograph) records typically rotate at 16, 33⅓, 45, or 78 rpm (CAV).
  • Audio CD rotation rates vary from about 500 rpm when reading the innermost CD track, to 180 rpm when reading tracks near the outer edge (CLV).
  • An automobile's engine typically makes between 700 and 7000 rpm.
  • Aircraft piston motors can rotate with 8000 rpm.
  • A racing car engine's limits are much higher, as high as 19,000 rpm in Formula One.
  • Gas turbine engines rotate at tens of thousands of rpm.
  • A computer's hard drive can range from 3000-7200 RPM on IDE types and from 10-25,000 on SATA and SCSI drives.
  • A 52x CD-ROM drive can rotate a cd as fast as 10,350 RPM.

Standards bodies generally recommend the symbol 'r/min', which better follows the general principles for forming unit symbols.

The SI unit of frequency is the hertz (Hz):

1 rpm = 1 r/min = 1/60 Hz

The SI unit of angular speed is the radian per second:

rotational speed = 1 rpm = 1 r/min ( = 1/60 Hz) = 2π rad/min = 2π/60 rad/s = 0.104 719 76 rad/s = angular speed

• RPM:
  • RPM Package Manager (originally called "Red Hat Package Manager")
  • RPM (movie)
  • RPM (band), a Brazilian rock band
  • In firearms, Rounds Per Minute: how many shots an automatic weapon can fire in one minute
  • On roads in the United States, RPM stands for Raised Pavement Marker.

ca:Rpm de:Drehzahl nl:Rpm ja:Rpm