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Le foret à cône inversé est principalement utilisé pour la masse rocheuse lâche relativement fracturée. La conception de la jupe de contrôle aide à récupérer l'outil de forage, à réduire le blocage et l'enfouissement du BIT et à améliorer la rectitude du forage. Nos bits de bouton de retour sont r25 bits de bouton de retour, r28 bits de bouton de retour, r32 bits de bouton de retour, r35 bits de bouton de retour, r38 bits de bouton de retour, T38 bits de bouton de retour, T45 bits de bouton de retour, T51 bits de bouton de retour, gt60 bits de bouton de retour, st58 bits de bouton de retour, st68 bits de bouton de retour...
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 41 | 1 5/8" | 5 × 9 | 2 × 8 | 2 | 1 | 0.78 | R25-417YFP |
| 45 | 1 3/4" | 6 × 9 | 3 × 8 | 1 | 3 | 1 | R25-459YFP | |
| 48 | 1 7/8" | 6 × 10 | 3 × 9 | 1 | 3 | 1.1 | R25-489YFP | |
| 51 | 2" | 6 × 10 | 3 × 9 | - | 3 | 1.35 | R25-519YFP | |
| 55 | 2 11/64" | 6 × 11 | 3 × 9 | 1 | 3 | 1.54 | R25-559YFP | |
| 57 | 2 1/4" | 6 × 10 | 3 × 10 | - | 3 | 1.6 | R25-579YFP | |
| 64 | 2 1/2" | 8 × 11 | 4 × 10 | 1 | 2 | 2.2 | R25-6412YFP | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 45 | 1 3/4" | 6 × 9 | 3 × 8 | 1 | 3 | 1 | R28-459YFP |
| 51 | 2" | 6 × 10 | 3 × 9 | 1 | 3 | 1.35 | R28-519YFP | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 45 | 1 3/4" | 6 × 9 | 3 × 8 | 1 | 3 | 0.9 | R32-459YFP |
| 48 | 1 7/8" | 6 × 10 | 3 × 9 | 1 | 3 | 1.1 | R32-489YFP | |
| 51 | 2" | 6 × 10 | 3 × 9 | - | 3 | 1.2 | R32-519YFP | |
| 57 | 2 1/4" | 6 × 10 | 3 × 10 | - | 3 | 1.7 | R32-579YFP | |
| 64 | 2 1/2" | 6 × 11 | 3 × 10 | 1 | 2 | 2.2 | R32-649YFP | |
 | 60 | 2 23/64" | 8 × 10 | 4 × 9 | 1 | 2 | 1.7 | R32-6012YFP |
| 64 | 2 1/2" | 8 × 10 | 4 × 10 | 2 | 2 | 1.9 | R32-6412YFP | |
| 76 | 3" | 8 × 12 | 4 × 11 | 2 | 2 | 2.2 | R32-7612YFP | |
 | 76 | 3" | 8 × 11 | 4 × 11, 1 × 11 | - | 4 | 3.3 | R32-7613YFA |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 64 | 2 1/2" | 8 × 10 | 4 × 10 | 2 | 2 | 1.9 | R38-6412YFP |
| 76 | 3" | 8 × 12 | 4 × 11 | 2 | 2 | 2.2 | R38-7612YFP | |
| 64 | 2 1/2" | 6 × 11 | 3 × 10 | 1 | 2 | 1.9 | R38-649YFP | |
| 64 | 2 1/2" | 6 × 11 | 3 × 10, 1 × 9 | 1 | 2 | 1.9 | R38-6410YFA | |
| 66 | 2 19/32″ | 6 × 11 | 3 × 10, 1 × 9 | 1 | 2 | 1.9 | R38-6610YFA | |
 | 64 | 2 1/2" | 8 × 10 | 4 × 10, 1 × 9 | 1 | 4 | 1.9 | R38-6413YFA |
| 70 | 2 3/4" | 8 × 10 | 4 × 10, 1 × 9 | 1 | 4 | 2.4 | R38-7013YFA | |
| 76 | 3" | 8 × 11 | 4 × 11, 1 × 11 | - | 4 | 3.3 | R38-7613YFA | |
| 89 | 3 1/2" | 8 × 12 | 4 × 12, 2 × 10 | 1 | 4 | 5.3 | R38-8914YFA | |
| 89 | 3 1/2" | 8 × 12 | 4 × 11, 1 × 11 | 1 | 4 | 5.3 | R38-8913YFA | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 64 | 2 1/2" | 8 × 10 | 4 × 10 | 2 | 2 | 1.9 | T38-6412YFP |
| 76 | 3" | 8 × 12 | 4 × 11 | 2 | 2 | 2.2 | T38-7612YFP | |
| 64 | 2 1/2" | 6 × 11 | 3 × 10 | 1 | 2 | 1.9 | T38-649YFP | |
| 64 | 2 1/2" | 6 × 11 | 3 × 10, 1 × 9 | 1 | 2 | 1.9 | T38-6410YFA | |
| 66 | 2 19/32″ | 6 × 11 | 3 × 10, 1 × 9 | 1 | 2 | 1.9 | T38-6610YFA | |
 | 64 | 2 1/2" | 8 × 10 | 4 × 10, 1 × 9 | 1 | 4 | 1.9 | T38-6413YFA |
| 70 | 2 3/4" | 8 × 10 | 4 × 10, 1 × 9 | 1 | 4 | 2.4 | T38-7013YFA | |
 | 65 | 2 9/16" | 6 × 12 | 4 × 10 | 1 | 2 | 3.1 | T38-6510YLP |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 76 | 3" | 8 × 12 | 4 × 11 | 2 | 2 | 2.2 | T45-7612YFP |
| 89 | 3 1/2" | 8 × 13 | 5 × 12 | 2 | 2 | 5.2 | T45-8913YFP | |
| 102 | 4" | 9 × 12 | 6 × 12 | - | 3 | 6.5 | T45-10215YFP | |
| 115 | 4 1/2" | 9 × 14 | 7 × 13 | - | 3 | 10 | T45-11516YFP | |
| 115 | 4 1/2" | 9 × 14 | 6 × 13 | - | 3 | 10 | T45-11515YFP | |
 | 76 | 3" | 8 × 11 | 4 × 11, 1 × 11 | - | 4 | 3.2 | T45-7613YFA |
| 89 | 3 1/2" | 8 × 12 | 4 × 12, 2 × 10 | 1 | 4 | 5.4 | T45-8914YFA | |
| 102 | 4" | 8 × 12 | 4 × 12, 3 × 12 | - | 4 | 7.8 | T45-10215YFA | |
| 102 | 4" | 8 × 13 | 4 × 12, 4 × 12 | - | 4 | 7.8 | T45-10216YFA | |
| 115 | 4 1/2" | 8 × 14 | 4 × 13, 3 × 12 | - | 4 | 7.8 | T45-11515YFA | |
 | 76 | 3" | 8 × 13 | 4 × 11, 1 × 11 | 1 | 4 | 3.5 | T45-7613YLA |
| 89 | 3 1/2" | 8 × 12 | 4 × 12, 1 × 12 | 1 | 4 | 4.7 | T45-8913YLA | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 89 | 3 1/2" | 8 × 12 | 4 × 12, 2 × 10 | 1 | 4 | 5.3 | T51-8914YFA |
| 89 | 3 1/2" | 8 × 12 | 4 × 11, 1 × 11 | 1 | 4 | 5.3 | T51-8913YFA | |
 | 89 | 3 1/2" | 8 × 13 | 5 × 12 | 2 | 2 | 4.6 | T51-8913YFP |
| 102 | 4" | 8 × 14 | 7 × 12 | 1 | 2 | 7.1 | T51-10215YFP | |
| 102 | 4" | 9 × 12 | 6 × 12 | - | 3 | 7.1 | T51-10215YFP | |
| 115 | 4 1/2" | 9 × 14 | 7 × 13 | - | 3 | 10 | T51-11516YFP | |
| 115 | 4 1/2" | 9 × 14 | 6 × 13 | - | 3 | 10 | T51-11515YFP | |
| 127 | 5" | 9 × 14 | 7 × 13 | - | 3 | 13 | T51-12716YFP | |
 | 89 | 3 1/2" | 8 × 12 | 4 × 12, 2 × 10 | 1 | 4 | 5.4 | T51-8914YFA |
| 102 | 4" | 8 × 12 | 4 × 12, 3 × 12 | - | 4 | 7.8 | T51-10215YFA | |
| 102 | 4" | 8 × 13 | 4 × 12, 4 × 12 | - | 4 | 7.8 | T51-10216YFA | |
| 115 | 4 1/2" | 8 × 14 | 4 × 13, 3 × 12 | - | 4 | 7.8 | T51-11515YFA | |
| 115 | 4 1/2" | 8 × 14 | 4 × 14, 3 × 12 | - | 4 | 7.8 | T51-11515YFA | |
| 115 | 4 1/2" | 8 × 14 | 4 × 14, 4 × 12 | - | 4 | 10 | T51-11516YFA | |
 | 89 | 3 1/2" | 9 × 11 | 3 × 11, 2 × 10 | 1 | 3 | 4.8 | T51-8914YFA |
| 102 | 4" | 9 × 12 | 3 × 12, 3 × 11 | 1 | 3 | 6.9 | T51-10215YFA | |
| 110 | 4 21/64″ | 9 × 14 | 6 × 12, 2 × 11 | - | 3 | 10 | T51-11017YFA | |
| 127 | 5" | 8 × 16 | 4 × 14, 4 × 14 | - | 4 | 13.5 | T51-12716YFA | |
 | 102 | 4" | 8 × 14 | 4 × 13, 1 × 13 | - | 2 | 10.1 | T51-10213YLA |
| 115 | 4 1/2" | 9 × 14 | 6 × 12, 4 × 12 | - | 3 | 9.45 | T51-11519YLA | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 92 | 3 5/8″ | 9 × 12 | 9 × 12 | - | 2 | 5.1 | GT60-9218YFP |
| 96 | 3 25/32″ | 9 × 12 | 9 × 12 | - | 2 | 6.5 | GT60-9618YFP | |
| 102 | 4" | 9 × 13 | 10 × 12 | - | 2 | 8.5 | GT60-10219YFP | |
 | 115 | 4 1/2" | 9 × 14 | 10 × 12 | - | 3 | 10.8 | GT60-11519YFP |
| 127 | 5" | 9 × 16 | 10 × 14 | - | 3 | 15 | GT60-12719YFP | |
| 140 | 5 1/2" | 9 × 16 | 10 × 14 | - | 3 | 15 | GT60-14019YFP | |
| 152 | 6" | 9 × 16 | 12 × 16 | - | 3 | 20 | GT60-15221YFP | |
 | 115 | 4 1/2" | 9 × 16 | 6 × 13 | - | 3 | 15 | GT60-11515YFP |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 89 | 3 1/2" | 10 × 12 | 4 × 12, 2 × 12 | - | 4 | 5 | ST58-8916YFA |
| 115 | 4 1/2" | 10 × 14 | 4 × 14, 4 × 14 | - | 4 | 10 | ST58-11518YFA | |
| Apparition | Diamètre | Boutons | Trou de chasse d'eau | Poids [kg] | Modèle n°. | |||
| [mm] | [en] | Jauge [N°] × [mm] | Avant [N°] × [mm] | Côté [N°] | Avant [N°] | |||
 | 102 | 4" | 10 × 12 | 4 × 12, 4 × 12 | - | 4 | 9.3 | ST68-10218YFA |
| 115 | 4 1/2" | 10 × 14 | 4 × 14, 4 × 14 | - | 4 | 10 | ST68-11518YFA | |
le BIT à bouton rétractable
application du foret de contrôle
