CT55 and CT67
CT55 and CT67 for surface
- Hole diameter CT55 (new T51)
- 89.0 - 127.0 mm (3.5 - 5.0 in.)
- Hole diameter CT67 (new GT60)
- 102.0 - 152.0 mm (4.0 - 6.0 in.)
- Flushing house
- 70 mm (DXi), 80 mm (DPi), 90 mm (DPi)
![Curved thread CT55 and CT67 black background](/siteassets/images/rock-tools/top-hammer-drilling-tools/top-hammer-ct55-and-ct67-blackbg-2.jpg?width=480&height=293&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1695272755&hmac=2f8ebffbbfe164aca6638fa3cd7d2821280724cb3796bfec5bc386c41e36c10d)
CT55 and CT67 curved thread systems are designed for surface mining and quarrying. These systems accommodate higher drilling power than the standard ones and feature a curved profile that reduces stress levels strategically while optimizing the product for fatigue strength.
Features
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Patented design
The unique, patented curved thread system provides a bigger X-section where needed and significantly reduces stress levels. This leads to fewer breakages and increased service life.
-
Productivity boost
The curved threads achieve a faster rate of penetration per meter and more meters per engine hour. These factors - along with problem-free drilling, easy coupling/uncoupling and good hole quality/hole straightness - provide increased productivity during drilling operations.
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Advanced technology
The specially developed shoulder-driven system achieves an efficient energy transfer along with a stiff, strong connection. Easy coupling/uncoupling leads to minimal rattling.
Product specifications
- Hole diameter CT55 (new T51)
- 89.0 - 127.0 mm (3.5 - 5.0 in.)
- Hole diameter CT67 (new GT60)
- 102.0 - 152.0 mm (4.0 - 6.0 in.)
- Flushing house
- 70 mm (DXi), 80 mm (DPi), 90 mm (DPi)
- Rock drills CT55 (new T51)
- RD925, RD927, RD930
- Rock drills CT67 (new GT60)
- RD927, RD930, HL1060T, HL1560T, RD1635FC
![](https://img.youtube.com/vi/1X3PKJyqNvM/maxresdefault.jpg)
![](https://img.youtube.com/vi/3T1XNwbJg2k/maxresdefault.jpg)
![Top hammer CT67 white background](/siteassets/images/rock-tools/top-hammer-drilling-tools/top-hammer-ct67-whitebg-2.jpg?width=480&height=270&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1695272755&hmac=0f405762f8e0908507ed8cf6c030754ad42fcdb2c420d2ffd2b086e8a0e3bfd3)
Curved thread innovation
Packed with power
Learn how a curved top hammer thread makes all the difference. The CT55 and CT67 bench drilling tool systems give you a lower cost per drilled meter and a significant reduction in total drilling expenses. Check out other features, benefits and values.
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