We just broke our own 60 year record with a completely custom thread for drill rods that will end up weighing a TON.

Welcome to HAL Heavy Duty Machining Australia, a real live Aussie machine shop based in Central Queensland that specialises in the drilling industry. In short, we fix stuff that drillers break... and make all the heavy duty custom gear they need to get the job done.

In this video we machine up a completely custom thread for our upcoming Megadrill project - a VLD (very large diameter) rig capable of drilling 3.0m diameter hole to depths of 250m!

Due to the incredible torque created, we have to machine completely custom rods that are quite literally off the scale - 40% larger than anything readily commercially available. It dwarfs an 8 5/8 reg (about as big as it gets for standard onshore rigs to my knowledge).

OD is well over 300mm
Thread length is close to 200mm

Can’t share much more specifics as it’s a custom prototype.

It’s definitely a record for the 60 year history of the company (by FAR) and MIGHT just be one of the biggest rod threads machined with the intention of being spun off the back of a road registered drill rig.

No doubt the comments section will light up like a christmas tree if not.

Which is exactly what I want.

I can't find bigger, but if someone knows of it, PLEASE let me know. No claims of an actual world record in this video... we just don't know for sure. Yet.

Enjoy, and thanks for tuning in.

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