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			Converter Dolly - 




fjrigjwwe9r0logisticsglossary:definition
Auxiliary axle assembly equipped with a fifth wheel (coupling device), towed by a semitrailer and supporting the front of, and towing, another semitrailer. Reference: Truck Writers of North America (TWNA)
Related Terms: Converter Dolly - dolly | trucking |

Dolly -

fjrigjwwe9r0logisticsglossary:definition
Auxiliary axle assembly equipped with a fifth wheel (coupling device), towed by a semitrailer and supporting the front of, and towing, another semitrailer. Reference: Truck Writers of North America (TWNA)
Related Terms: Dolly - converter dolly | trucking |

Fifth Wheel -

fjrigjwwe9r0logisticsglossary:definition
Coupling device attached to a tractor or dolly which supports the front of a semitrailer and locks it to the tractor or dolly. The fifth wheel's center is designed to accept a trailer's kingpin, around which the trailer and tractor or dolly pivot in turns.  Fifth Wheel Reference: Truck Writers of North America (TWNA)
Related Terms: Fifth Wheel - sliding fifth wheel | trucking |

Kingpin Trailer -

fjrigjwwe9r0logisticsglossary:definition
Anchor pin at the center of a semitrailer's upper coupler which is captured by the locking jaws of a tractor's fifth wheel to attach the tractor to the semitrailer. Reference: Truck Writers of North America (TWNA)
Related Terms: Kingpin Trailer - kingpin axle | trucking |

Semitrailer (1) -

fjrigjwwe9r0logisticsglossary:definition
Truck trailer supported at the rear by its own wheels and at the front by a fifth wheel mounted to a tractor or dolly. Reference: Truck Writers of North America (TWNA)
Related Terms: Semitrailer (1) - trailer | trucking |

Slider -

fjrigjwwe9r0logisticsglossary:definition
Mechanism that allows a tandem axle suspension to be moved back and forth at the rear of a semitrailer, for the purpose of adjusting the distribution of weight between the axles and fifth wheel. Reference: Truck Writers of North America (TWNA)
Related Terms: Slider - fixed tandem | sliding tandem | trucking |

Sliding Fifth Wheel -

fjrigjwwe9r0logisticsglossary:definition
Fifth wheel mounted to a mechanism that allows it to be moved back and forth for the purpose of adjusting the distribution of weight on the tractor's axles. Also provides the capability to vary vehicle combination lengths.  Sliding Fifth Wheel Reference: Truck Writers of North America (TWNA)
Related Terms: Sliding Fifth Wheel - fifth wheel | trucking |

Sliding Tandem -

fjrigjwwe9r0logisticsglossary:definition
Mechanism that allows a tandem axle suspension to be moved back and forth at the rear of a semitrailer, for the purpose of adjusting the distribution of weight between the axles and fifth wheel. Reference: Truck Writers of North America (TWNA)
Related Terms: Sliding Tandem - fixed tandem | slider | trucking |

Tractor (1) -

fjrigjwwe9r0logisticsglossary:definition
Truck designed primarily to pull a semitrailer by means of a fifth wheel mounted over the rear axle(s). Sometimes called a truck tractor or highway tractor to differentiate from it from a farm tractor.  Tractor (1) Reference: Truck Writers of North America (TWNA)
Related Terms: Tractor (1) - truck | trucking |

Upper Coupler -

fjrigjwwe9r0logisticsglossary:definition
Load bearing surface on the underside of the front of a semitrailer. It rests on the fifth wheel of a tractor or dolly and has a downward-protruding kingpin which is captured by the locking jaws of the fifth wheel. Reference: Truck Writers of North America (TWNA)
Related Terms: Upper Coupler - fifth wheel | trucking |


Unless otherwise indicated, all entries in the LogisticsWorld Logistics Glossary are copyright 1997, Matthew D. Cox, logistics@logisticsworld.com.

 

WWW Virtual Library of Logistics
Ver 4, Sep, 1999, Matthew D. Cox, logistics@logisticsworld.com
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