Bore, weld and face worn bores on site — no dismantling, no workshop trip
One portable kit for line boring Ø40–300 mm and automatic bore welding Ø45–160 mm. Rebuild pin bores, hinge points and bearing housings right where the machine stands.
The repair is rarely the expensive part. The downtime is.
When a pin bore or bearing housing wears oval, the usual fix means stripping the machine and sending heavy parts away. Every day it waits is a day it doesn’t earn.
Dismantle, lift and ship
Booms, buckets, frames and housings have to come off, be craned and transported to a workshop and back.
Machine stands idle
Excavators, loaders, cranes and vessels sit out of service while the part waits in the workshop queue.
Two trades, two visits
Welding up the worn bore and re-boring it are often done by different shops, adding handling and lead time.
Weld it up and bore it back to size — with one machine, in place
The same bar, bearing supports and drive handle both welding and machining, so the bore is rebuilt and finished without moving the workpiece.
Line boring
Machines bores from Ø40 to 300 mm with stepless 55–255 rpm and automatic or manual axial feed.
Automatic bore welding
Spiral welding builds up worn bores Ø45–160 mm with CO2 and 0.8 / 1.0 / 1.2 mm wire.
Sector welding
Rebuilds only the worn part of the circumference instead of the full bore.
Jump welding
Built-in jump welding function for interrupted weld passes inside the bore.
Flange facing
Optional face tool holder machines flange faces Ø120–130 mm, feed following the spindle.
Optional
Typical jobs
- Excavator and loader boom, stick and bucket pin bores
- Crane, hinge-point and articulation bores
- Bearing housings and bushing seats on heavy plant
- Mining, earthmoving, marine and steel-structure repair
What does one worn bore cost you today?
Enter your own figures. The calculator compares sending the job to a workshop against repairing it on site with the PB-300Super.
Pick the option that fits how often you repair bores
Not sure? Tell us about your job and fleet, and we’ll recommend the most cost-effective route.
We do the job for you
Best for occasional repairs
- INSITOOLS technicians come to your site
- Bore welding and line boring in one visit
- No equipment investment
Rent with operator training
Best when you have your own fitters
- Complete PB-300Super kit for your project period
- Set-up and operating guidance
- Try it on real jobs before you buy
Own it, with training
Best for fleets, mines, shipyards and repair contractors
- Full kit with standard Ø50 × 1,600 mm bar
- Operator training and after-sales support across Singapore, Thailand, Malaysia, Indonesia, Vietnam & the Philippines
- Add-ons: 35 mm system, 300 mm modular tool holders, flange facing
PB-300Super specifications
Drive
| Servo motor voltage | 220 V, 50–60 Hz |
|---|---|
| Servo rated power | 3,100 W |
| Output torque | 130 Nm |
| Axial feed motor | 400 W |
Line boring
| Boring range | Ø40–300 mm |
|---|---|
| Output speed | 55–255 rpm, stepless |
| Axial feed | Automatic / manual |
| Axial feed speed | 0.01–0.5 |
| Cutting thickness | 0.02–8 mm |
| Tool holder | Ø14 mm |
| Standard boring bar | Ø50 × 1,600 mm |
Bore welding
| Welding bore range | Ø45–160 mm (optional) |
|---|---|
| Welding thickness | 3–4 mm |
| Welding functions | Spiral bore, sector, jump welding |
| Welding method | CO2 gas |
| Wire diameter | 0.8 / 1.0 / 1.2 mm |
| Welding machine | 210–500 |
| Welding bar lengths | 200 / 240 / 350 / 800 mm |
| Welding bar assembly length | 1,400 mm |
Mounting & options
| Fixing method | Welded bearing brackets |
|---|---|
| Bearing bracket range | Ø55–270 mm |
| Centering cones | Aluminium Ø55–105 mm Iron Ø100–164 mm |
| Optional 35 mm system | Line boring Ø40–75 mm |
| Optional tool holders | 300 mm modular line boring set |
| Optional flange facing | Face Ø120–130 mm, 50 mm ID, feed follows spindle |
Backed by people who service what they sell
Industrial equipment distribution and after-sales service through Assurich Industries.
Singapore headquarters and a Thailand office, supporting customers in Singapore, Thailand, Malaysia, Indonesia, Vietnam and the Philippines.
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Need it once? Hire our on-site team or rent the kit. Need it often? Buy it with training.
Questions engineers ask us
What can the PB-300Super do?
It combines five functions in one portable kit: line boring from Ø40 to 300 mm, automatic bore welding from Ø45 to 160 mm, sector welding, jump welding, and optional flange facing. It is used to rebuild and re-machine worn bores, pin housings and bearing seats where the equipment stands.
Why repair a worn bore on site instead of in a workshop?
On-site line boring and bore welding avoid dismantling, lifting and transporting heavy components, so the machine returns to service sooner and downtime costs are reduced. Use the savings calculator above with your own figures.
How is the machine mounted?
Bearing brackets (Ø55–270 mm) are fixed to the workpiece by welding, and centering cones (aluminium Ø55–105 mm, iron Ø100–164 mm) align the Ø50 × 1,600 mm boring bar with the existing bore.
Which welding machine and wire does it use?
It works with a 210–500 welding machine using CO2 gas and 0.8, 1.0 or 1.2 mm wire, performing spiral bore welding, sector welding and jump welding.
Can I rent it or hire an on-site service?
Yes. INSITOOLS offers the PB-300Super as an on-site machining service, as an equipment rental, or for purchase with operator training, for customers in Singapore, Thailand, Malaysia, Indonesia, Vietnam and the Philippines.
Get your PB-300Super quotation
Tell us the bore size and the job. Our engineering sales team will recommend service, rental or purchase and send a quotation.
- Reply from an engineer, not a call centre
- Support in Singapore, Thailand, Malaysia, Indonesia, Vietnam & Philippines
- No obligation
Thailand office · 02-0299-378 · 090-168-5559