Resources Contact Us Home
Rolling element and method of producing the same

Image Number 12 for United States Patent #7422643.

There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at C. To this end, the rolling element is made from a steel material containing at least 0.45 to 1.5 wt % C and one or more alloy elements selected from 0.1 to 0.5 wt % V and 0.3 to 1.5 wt % Cr, and has a rolling contact surface layer having a structure tempered at low temperature in which 2 to 18% by volume cementite disperses in a martensite parent phase formed by induction heating and cooling and containing 0.25 to 0.8 wt % carbon solid-dissolving therein.

  Recently Added Patents
Bundled flexible cable with water resistant structure
Lithographic apparatus and device manufacturing method
Methods of isolating bipotent hepatic progenitor cells
Autobrake and decel control built-in test equipment
Containers having radio frequency identification tags and method of applying radio frequency identification tags to containers
Vehicle control system
Disk drive with a subset of sectors with reduced write-to-read gap
  Randomly Featured Patents
Closed circuit television camera
Cache memory array for multiple address spaces
Micro-electro-mechanical optical device
Pulsed UV light source
Variable movement headrest arrangement
Semiconductor device
System and method for optimizing the topology of a virtual ring based upon a TCP/IP network
Hypoglycemic hydantoin derivatives
Variable stride exercise apparatus
Device and method for transmitting and receiving broadcasting signal