1)15 year's experience in drill bit
2)certificate:ISO9001:2000
3)delivery in time
4)long life time
5) MOQ:1 piece
Port: Tianjin
Minimum Order Quantity: 1 Piece/Pieces drill bit
Supply Ability: 500 Piece/Pieces per Month drill bit
Payment Terms: L/C,T/T,Western Union
Contact SupplierPackaging Detail: wooden case or cartons case and/or as your requirement
Delivery Detail: within 7 days
About us
Heijian Baoxing Petroleum Machinery Co.Ltd and 15 year's experience in drill bit
All our products have passed ISO9001 certification
With the business philosophy of "high quality goods, create the brand, struggle for first-class" we assure our products of the best quality by adopting advanced design technology, manufacturing process and strict quality control
About product
Structural features
1) The use of high strength and high toughness carbide teeth, a tooth to improve impact resistance, reduce the rate of broken teeth, soft formation tooth inlay partial top-dippers
2) Tooth bearing palm hard surfacing alloy layer, silver-plated roller bearings to improve the bearing capacity and carrying capacity of anti-seize
3)O-ring with a more highly saturated nitrile rubber wear, increasing the ring cross-section, in a sealed-off area outside the small increase in the seal boss. Improve the reliability of the seal
4) Locking cone with a ball, can adapt to higher speed
5)Optimize the design of the tooth row number, number of teeth, grinning all the high profile and unique alloy teeth, give full play to the drill bit cutting capacity and cutting speed
6 )Limit the use of pressure and prevent fluid into the lubrication system of the whole rubber reservoir bag for the bearing system provides good lubrication, and to ensure that O-ring work to improve the working life of the bit
7) The use of 250 degree heat resistant, low wear of the new grease to improve the ability to drill high-temperature seal lubrication system
steel tooth bits size and API connecting thread
steel tooth bits size | API connecting thread | weight (kg) | |
| In | mm | ||
| 4 5/8 | 117.5 | 2 7/8 | 6.0 |
| 4 3/4 | 120.6 | 2 7/8 | 6.5 |
| 5 3/4 | 146.1 | 3 1/2 | 16.5 |
| 5 7/8 | 149.2 | 3 1/2 | 17.0 |
| 6 | 152.4 | 3 1/2 | 18.0 |
| 6 1/4 | 158.7 | 3 1/2 | 19.0 |
| 6 1/2 | 165.1 | 3 1/2 | 19.0 |
| 6 3/4 | 171.4 | 3 1/2 | 19.0 |
| 7 1/2 | 190.5 | 4 1/2 | 26.5 |
| 7 7/8 | 200.0 | 4 1/2 | 29.0 |
| 8 3/8 | 212.7 | 4 1/2 | 35.0 |
| 8 1/2 | 215.9 | 4 1/2 | 35.0 |
| 8 3/4 | 222.2 | 4 1/2 | 36.0 |
| 9 1/2 | 241.3 | 6 5/8 | 58.0 |
| 9 5/8 | 244.5 | 6 5/8 | 57.5 |
| 9 7/8 | 250.8 | 6 5/8 | 57.0 |
| 10 | 254.0 | 6 5/8 | 60.0 |
| 10 5/8 | 269.9 | 6 5/8 | 66.0 |
| 11 | 279.4 | 6 5/8 | 75.0 |