![Horizontal Directional Drilling: [TMS03] & [BM4]](https://thoth-hydraulics.com/wp-content/uploads/2026/07/case-26-horizontal-drilling-machine-tms03-bm4-1100x450.jpg)
Product Selection · Application Guide
Trenchless boring under roads and rivers — how the TMS03 radial piston motor and the BM4 orbital motor divide rotation and feed duty on an HDD rig.
Horizontal directional drilling threads pipe under roads and rivers — the drill string needs smooth, controllable rotation while pullback force climbs with every metre of installed product.
Motor roles in this machine
- TMS03 — rotary drive: Ripple-free radial piston torque keeps the drill string turning steadily through mixed ground, protecting the bore path. TMS03 reference →
- BM4 — feed / carriage drive: Heavy-duty orbital motor moves the carriage with the steady thrust and pullback drilling requires. BM4 reference →
For sizing details or datasheets, contact our engineers.