TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ROLLER BIT [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-21

English

Subject field(s)
  • Mining Equipment and Tools
  • Boring and Drilling (Mines)
  • Geological Research and Exploration
  • Equipment (Oil and Natural Gas Extraction)
DEF

A rotary boring bit consisting of two to four-cone-shaped, toothed rollers which are turned by the rotation of the drill rods. They are used in hard rock in oil well boring and other deep holes down to 15,000 feet and more. Although their penetration speed is somewhat slow, roller bits last longer which is a very important factor in deep drilling.

CONT

In rolling cutter bits, the cone type bits currently manufactured have three cutters or two cutters. For general overall use the bit with three cones is a better balanced bit.

OBS

Roller-cone bits are also called rock bits. The surface of each cone is made up of rows of steel or tungsten carbide teeth or rows of tungsten carbide inserts. Tungsten carbide insert bits are usually used to drill extremely hard formations.

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
  • Sondage et forage miniers
  • Recherches et prospections géologiques
  • Outillage (Extraction du pétrole et du gaz)
CONT

L'action combinée du poids et de la rotation permet aux dents des trépans à molettes d'écailler la roche [...]

Spanish

Campo(s) temático(s)
  • Equipo y herramientas (Explotación minera)
  • Sondeo y perforación (Minas)
  • Investigaciones y prospecciones geológicas
  • Equipo para extracción de petróleo y gas natural
Save record 1

Record 2 2008-03-12

English

Subject field(s)
  • Horse Racing and Equestrian Sports
OBS

They can be a single roller as centre piece or attached as a player on the bit (mainly among the western curb bits), or a few rollers set round the mouthpiece itself (mainly in the classical riding snaffles, called "roller mouth" or "cherries"). The "Magenis snaffle" has slits in the mouthpiece into which are set the rollers.

French

Domaine(s)
  • Courses hippiques et sports équestres

Spanish

Save record 2

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