Drill rods compatible with the Vermeer D40×55 S3 / D36×50 Series I-II
The D40×55 S3 and D36×50 Series I-II run a heavy-wall rod with 67 mm outside diameter and 10,54 mm wall thickness. It is the thickest wall among the Vermeer-compatible sizes in this catalogue; in return, the minimum bend radius rises to 44,2 m.
Technical dimensions
| Compatible machine models | D40×55 S3 · D36×50 Series I-II |
|---|---|
| Outside diameter | 67 mm |
| Wall thickness | 10,54 mm |
| Tool joint diameter | 79 mm |
| Rod length and weight | 3.048 mm (3,05 m) — 55 kg · 4.572 mm (4,57 m) — 77 kg |
| Steel grade | S145 heat-treated |
| Min. bend radius | 44,2 m |
| Maximum torque | 6.800 Nm |
| Thread standard | Varies by machine series — confirmed before order |
Figures are taken from the master drill rod tables. Measuring the tool joint diameter of your existing rod with callipers is a surer check than the model code alone.
Why these figures matter
A heavy wall increases torsional and tensile strength but makes the rod less flexible. The 44,2 m bend radius is the limit of this class on tight urban jobs that need a sharp entry: if the profile is not drawn to that radius, the rod takes a permanent bend.
STETON rigs in the same torque class
The 6.800 Nm torque class corresponds to the range these STETON rigs work in. If you are evaluating a new machine, this is the starting point for comparison.
Tooling that runs with the rods
About Vermeer D40×55 S3 / D36×50 Series I-II drill rods.
Why is the bend radius larger than other rods?
As wall thickness and outside diameter grow, so does the radius at which the rod can bend elastically. A 67 mm body with a 10,54 mm wall needs 44,2 m where a 60,3 mm rod needs 33 m.
Which rod do I need for a D36×50?
The D36×50 appears in two sizes: Series I-II uses a 67 mm body while other series use 60,3 mm. Do not order without confirming your machine series; the wrong size will not fit the rod box.
What pipe diameter can this rod pull?
The rod carries the pullback force; pipe diameter is set by rig capacity and the reaming plan. The 6.800 Nm torque class is typically enough for mid-diameter PE and steel lines. Tell us your pipe diameter and distance and we will check it together.
Other machine models
Stock, quantity and lead time for Vermeer D40×55 S3 / D36×50 Series I-II rods: tell us your machine code and we will confirm the size over the phone.
+90 533 075 0222
Vermeer® and Ditch Witch® are registered trademarks of their respective owners. Boremak is not an authorised dealer, distributor or partner of these companies. Model names are used solely to describe which machines these rods fit dimensionally.