PK6500 Rotary Head
The PK6500 rotary head is a heavy-duty rotation unit designed for demanding DTH drilling and casing work up to 813 mm. Manufactured in Finland, it delivers high torque, stable rotation, and reliable drill string drive in hard rock, large-diameter casing operations, and extreme ground conditions.
Benefits of the Tri-Mach PK6500 Rotary Head
- Stable rotation under load: Maintains steady drill string rotation during DTH hammer drilling, reducing the risk of binding and improving control in the hole.
- Balanced torque and speed: Torque and rpm are matched for medium-diameter casing work, enabling efficient drilling without excessive wear or loss of control.
- Designed for DTH drilling: Built specifically for DTH hammer use, ensuring proper load handling, rotation stability, and compatibility with drilling systems.
- Integrated air flow system: Internal air swivel allows continuous air supply through the drill string, supporting hammer operation and effective flushing.
- Simple and robust structure: Mechanical simplicity reduces failure points and ensures reliable operation in demanding site conditions.
- Proven Finnish engineering: Designed and manufactured in Finland, based on decades of rotary head development since the 1990s.

| Rotary Head PK6500 | Specification | Value |
|---|---|---|
| Performance | Maximum Torque | 65 kNm |
| Maximum Rotational Speed | 35 r/min | |
| Connection | Outlet | API REG 8-5/8″ BOX |
| Internal Air Swivel | Included | |
| Air Inlet Connector | As per request (Default: G2 BOX THREAD) | |
| General | Total Weight | 790 kg |
Applications of PK6500 Rotary Head
- DTH Casing Drilling
- DTH Piling
- Anchor casing drilling
- Horizontal DTH Drilling
- Geothermal Drilling
Areas We Serve
We serve rig operators, site and project managers and drilling contractors across Finland, Sweden, Norway, Denmark, Switzerland, Germany, Austria, the United Kingdom, Italy, Iceland, Poland, Estonia, Latvia, Lithuania, Usa, Canada and Australia providing fast delivery, technical support, and customized DTH solutions for Northern and Central European ground conditions.
Compatible Products
- Horizontal DTH Drilling Rigs
- Excavator Drill Attachments
- DTH Drill Rods
- DTH Hammers
- DTH Casing Advancement Systems
- DTH Button Bits and Hole Openers
- Horizontal DTH Casing Advancement
FAQ: PK6500 Rotary Head
Do you have any further questions? Please feel free to contact Matias!

Matias Niemeläinen
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