On site and workshop line boring
Line boring in Echuca
Worn pins and oval bores make a machine sloppy, slow and expensive to run. We bring our line boring machine to you across Echuca, Moama and surrounds, weld the bore back up and machine it true, so your gear runs tight again without pulling the whole component off.

Mobile set-up
We come to the machine
Workshop
Fully set up at Wharparilla
Breakdowns
Callouts by arrangement
What line boring actually does
Every pivot on a machine wears. Grease breaks down, dirt gets in, and the pin starts working the hole. What began as a round bore slowly goes oval, the pin loses its fit, and the play works its way through the whole linkage.
Line boring fixes that in place. A boring bar is set up through the worn hole and aligned to the original centreline, the bore is built back up with weld, then machined true to size so a standard bush and pin drops straight back in. The machine usually needs pulling down to get to the pivot. We can do that for you, or you can have it stripped and ready before we arrive.
Left too long, that play stops being a bore problem. It cracks weld seams, elongates the housing past repair and puts load through things that were never meant to carry it. Caught early, it is a day of work. Caught late, it is a new component.
The short version: if you can rock the attachment by hand and feel movement in the joint, the bore has worn and it is worth a look before it costs you a component.
Signs you need line boring
- Slop or knocking through the linkage under load
- Bucket or blade wandering off line
- Pin holes gone oval or egg-shaped
- Pins spinning or seizing in the bore
- Grease weeping straight back out of the joint
- Cracked or dished bush housings
Spotted one or more of these? Give Sean a call and describe what the machine is doing. You will get a straight answer on whether it needs boring now or can wait.
What we line bore
Twenty years across mining, agricultural, civil and factory work. If it pivots and it has worn, there is a good chance we have bored one before.
Excavators & dozers
- Boom and stick pivots
- Bucket ears and links
- Blade and C-frame pins
- Ripper and hitch bores
Loaders & trucks
- Loader linkage and bucket pins
- Articulation joints
- Tipper body hinges
- Suspension and spring eyes
Agricultural gear
- Front end loader arms
- Three point linkage
- Header and harvester pivots
- Trailer and hitch points
Fixed plant
- Crusher and screen pivots
- Conveyor bearing housings
- Press and baler linkages
- Gate and chute hinges
How a line boring job runs
No mystery and no runaround. Here is exactly what happens from the phone call to the machine going back to work.
You call, we talk it through
Tell us the machine and which pivots feel worn. We work out whether it is an on site job or one for the workshop, and what it will take.
We come to you
The mobile set-up carries the boring bar, welder and power. Farm, pit, yard or factory floor, the machine stays where it is.
Strip and measure
Pins and old bushes come out, the bore gets measured, and we confirm how far it has worn before anything is cut.
Weld and bore true
The bore is built back up with weld, then the bar is aligned to the original centreline and the hole is machined round and back to size.
New bushes and pins
Fresh bushes pressed in and pins fitted, so the joint sits tight the way it did when the machine was new.
Checked before we leave
Measured against spec, moved through its range and greased up. You see it working before we pack up.
Why owners keep calling us back
No fuss, no runaround. Just honest work that holds up and gets your machine back to earning.
Quality of workmanship
Every repair is done properly the first time. Bored true, welded clean, measured and checked before it leaves.
Care for safety and equipment
Your machine gets treated like ours. Safe practice on site and respect for the gear we work on.
Reliability
When we say we will be there, we are. Straight answers, on time, and a fix that holds up.

the trade
My promise to you
G'day, I'm Sean. After 20 years in the trade, I decided to open SOS Engineering. That is two decades across mining, agricultural, civil and factory work, so there is not much machinery I have not had my hands on.
When you call, you deal with me. Whether it is a breakdown that cannot wait or a scheduled service to catch the small stuff early, you will get a straight answer, honest work, and a fix that holds up.
That is the deal: I look after your gear like it is my own, and I keep you moving.
Great service, keeping you moving.
Sean O'Sullivan
Line boring based in Echuca
Our workshop sits just out of Echuca and the mobile set-up runs from here, so jobs around town, out on the surrounding farms and across the river get seen quickly. If the machine cannot move, we bring the boring bar to it. If it is easier to bring the component in, the workshop is set up for the bigger rebuilds. We still travel well beyond Echuca when the job calls for it.
Northern Vic
Our base
~300km
Service radius
Line boring FAQs
Line boring is machining a worn pivot hole back to a true, round bore while the component stays where it is. A boring bar is set up through the hole, aligned to the original centreline, and the bore is cut back to size. It is how excavator booms, bucket ears, loader linkages and dozer pivots get brought back to spec without replacing the whole component.
Got a machine down? Let's get you moving
Call Sean with a quick rundown of the job and the machine. Straight answer, no runaround, on site or in the shop.
Call Sean
0402 806 636
sosengineeringco@outlook.com
Workshop
1046 Mount Terrick Rd, Wharparilla VIC 3564
Hours
Mon to Fri, breakdowns by arrangement
