expanding drill bits

expanding drill bits

Product description:

Quick Details

  • Place of Origin: Hebei, China (Mainland)
  • Brand Name: JianHan
  • Model Number: Steel Tooth triconebit-1
  • Type: tricone bit
  • Material: Cobalt Steel Alloys
  • Use: Well Drilling
  • blue/ golden: steel tooth

Packaging & Delivery

Packaging Details: wooden box; steel box; or as your requirements
Delivery Detail: within 7-15 work days


1-API or ISO 9001
2- IADC (115-437)
3- High quality & competitive price
4- All model & dimension available
5-High speed

26 (660.4mm) HAT111 steel tooth tricone bit

Structure features:

W series bit for the seal rolling bearing the bit. For high speed drilling, geothermal well drilling, it is an ideal and economic tools. The main structure features:

1, 17.1/2 above disc bit of its main structure features: drill for a style, level 3 rolling bearing and two way thrust, steel ball lock, center, suitable for high speed often.

2 and 12 more than one quarter of the disc bit its main structure features: drill for no style, level 3 rolling bearing, a thrust, steel ball lock, deduces the center. Suitable for high speed.

3 and 12 1/4 of the disc bit its main structure features: drill for no style, level 2 rolling bearing, a thrust, small shaft sliding, steel ball lock, suitable for high speed.

4, drill bits, bearing no seal, drilling fluid directly into bearing cavity cooling bearing, suitable for geothermal well drilling.

Product advantage:

Suitable for geothermal well drilling

W series oil with three disc bit of optional size, type:

bit size (in) bit size (mm) bit type

API size


screw thread


12 1/4311.2W111; W121; W131; W3216 8/537.9- 43.3
17 1/2444.5W111; W121; W1317 5/846.1- 54.2
20508W111; W121; W1317 5/846.1- 54.2
24609.6W111; W121; W1317 5/846.1- 54.2
26660.4W111; W121; W1317 5/846.1- 54.2

Bit sizeIADCApplication

Cutting structure


kN/ mm


r/ min


Low compressive strength; high drillability of extremely soft formation; such as soft shale; clay; salt; etc

Tooth face; back cone hardfaced strengthening; tooth of the exposed high; cone set foot back in gear and discharge tooth back cone added between a row of trimming teeth

0.35- 0.90180- 80

details pictures:

packing details: