Drill rods compatible with the Ditch Witch JT7020 / JT8020
The JT7020 and JT8020 are the largest Ditch Witch-compatible size in this catalogue: 89 mm outside diameter, 101,6 mm tool joint, 4,5 m length and 100 kg per rod. With a 24.000 Nm torque limit, this is the class for large-diameter steel pipeline crossings.
Technical dimensions
| Compatible machine models | JT7020 · JT8020 |
|---|---|
| Outside diameter | 89 mm |
| Wall thickness | 10 mm |
| Tool joint diameter | 101,6 mm |
| Rod length and weight | 4.500 mm (4,50 m) — 100 kg |
| Steel grade | S145 heat-treated |
| Min. bend radius | 72 m |
| Maximum torque | 24.000 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
The 72 m minimum bend radius is the most restrictive figure in this class. If the entry angle and depth profile are not drawn to it, the rod deforms permanently. Rods cannot be handled by hand; a crane and automatic loader are mandatory.
STETON rigs in the same torque class
The 24.000 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 Ditch Witch JT7020 / JT8020 drill rods.
Is the 89 mm rod the same as the special-series 89 mm rod?
No. The special-series 89 × 4.500 mm rod in this catalogue is made to 2 7/8" IF (NC31) thread in S135 steel, while the Ditch Witch-compatible 89 mm rod is S145 with a different tool joint size. Do not mix them without confirming the thread form.
How much site area does this class need?
A 4,5 m rod needs at least one rod length of straight area behind the entry line, plus space for rod boxes and the mud unit. Share your site dimensions and we will check the layout together.
How does 100 kg per rod affect transport?
A set of a hundred rods approaches 10 tonnes, a truckload on its own. Plan it separately from the rig transport.
Other machine models
Stock, quantity and lead time for Ditch Witch JT7020 / JT8020 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.