PIV Chain Drive Transmissions

Vari-Chain® PIV Chain Transmissions are adjustable variable speed transmissions and variators featuring a metal PIV chain that positively engages grooves in conical wheels, providing a drive that does not slip. Seven sizes ranging from fractional to fifteen horsepower and speed ranges of 2:1 to 6:1 are available in various configurations and arrangements. These PIV chain drive transmissions or variators are used in printing presses, textile machinery, paper converting, and packaging equipment, among other applications. Fairchild PIV chain speed control transmissions are totally enclosed mechanical variable ratio drives. As opposed to belt or traction drives, all Fairchild variator models are PIV chain driven to be positive with zero slip. Some PIV chain transmissions or variators combine the variable speed unit with a mechanical differential to expand or compress the final speed range. In many cases, SPECON PIV transmissions or PIV chains products are fit, form and function interchangeable with units made by other manufacturers, such as Rexnord®, Link-Belt®, AC Compacting® or other manufacturers. Please contact the factory for interchange information concerning Link-Belt® units.

Style I PIV Chain Transmissions
Style I PIV Chain Transmissions
Capable of mounting in either horizontal or vertical orientation, the Style I PIV Chain gearbox contains the basic infinitely pitch chain and an input and output shaft. These Style I Variators are available for a wide variety of speed ranges, torque capacities and input speeds. Consult the Rating Table on page 2 of the 207-K catalog to view the power capacity and speed ranges available for the different sizes. In many cases, SPECON PIV transmissions or PIV chains products are fit, form and function interchangeable with units made by other manufacturers, such as Rexnord®, Link-Belt®, AC Compacting® or other manufacturers. Please contact the factory for interchange information concerning Link-Belt® units.
Style II PIV Chain Transmissions
Style II PIV Chain Transmissions
Style II VARI-CHAIN PIV drive variators incorporate a single stage input or output gear set in conjunction with the typical PIV gearbox assembly of the Style I unit. This combination provides the ability to utilize an integral speed ratio for either the input or output speed, as desired to mate the unit to your equipment and application