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PRODUCT OVERVIEW
The O-shaped rubber lip is used to seal the large- diameter bearing
structure, which improves the bearing capacity and
effectively
improves the service life of the drill bit bearing;
Large-diameter cones and U-shaped bottom hole cutting mode
improve cutting efficiency and the stability of the bottom hole
operation of the drill bit
It can meet the needs of 1 20mm in width.
Barrel bit’s pull down: 20~30t (Independent maximum pressure is 5~7t per unit.)
| Formation | pull down | Rotation speed | |
| Hole diameter | Rotation speed | ||
| Medium hard（50-100Mpa） | 20-30t | 0.8-1.5 | 12-16 |
| 1.5-2 | 10-12 | ||
| 2 -2.5 | 6-10 | ||
| 2.5-2.8 | 3-6 | ||
|
Hard （80-150Mpa） |
20-35t | 0.8-1.5 | 10-12 |
| 1.5-2 | 8-10 | ||
| 2 -2.5 | 5-8 | ||
| 2.5-2.8 | 2-5 | ||
Note: Within the same interval, the larger the borehole diameter, the lower the rotational speed. The single bit piece of the rotary digging roller bit can withstand a rated pull down of 5-7 tons/piece, and the rated speed range of the roller cone is 60-100 rpm.
 |
Description: The installation of the rotary bit is divided into inner and outer staggered installation |
1) According to different diameters, install the corresponding number of cones to ensure the maximum cutting outer diameter of the cones.
2) Cutting width 115≤L≤120mm.
3) The welding installation angle is controlled at 3°～5° (the lug back is away from the well wall).
4) The exposed height difference of the welding cone is controlled within 3mm.
5) Welding precautions: During the welding process, prevent the arc from burning the roller bits or carbide inserts. Take cooling measures for the roller bits (compressed air cooling, water cooling or wrapping the rollers with wet towel for cooling, to ensure that the roller bearing temperature does not exceed 100ºC).
Contact Us
Phone: +86 0512 62850656
+86 0512 62851667
Fax: +86 0512-62851611
Email: info@shareate.com
Address: No.6 Weixi Road, Suzhou Industrial Park
