Portable bore welding and machining machine
Portable Line Boring Machine: Mobile boring welding machine supports fast on-site excavator repair
Automatic Welding Feed System: Smooth boring welding machine operation improves repair quality
All-copper Industrial Motor: Durable boring welding machine with stable heat-resistant performance
Best Line Boring Machine for Excavator Repair: Portable boring welding machine restores boom pin holesProduct Introduction
If you’ve ever had a worn pin hole or bearing bore take your excavator, crusher or truck out of service, you know the drill. You spend 2 days tearing down a 5-ton component, pay $3000 to haul it 200 miles to the nearest machine shop, wait 2-3 weeks for them to fit you into their schedule, then spend another 2 days putting it all back together. All for a repair that should take 8 hours. And during that whole time, your machine is sitting idle, costing you thousands a day in lost work.That’s exactly why we built this portable bore welding and machining machine. It’s not some fancy lab gadget – it’s a workhorse designed for dirty, dusty job sites, remote mines, shipyards and construction yards. This all-in-one unit lets you weld up worn bores and machine them back to factory spec right where the equipment sits. No disassembly, no transport, no waiting around for someone else’s schedule.
Product Parameters
Boring Diameter Range | 45mm - 450mm |
Max Boring Depth | 1200mm |
Welding Diameter Range | 50mm - 460mm |
Spindle Speed (Stepless) | 0-150 RPM |
Feed Rate (Stepless) | 0.1-2.0 mm/rev |
Welding Current | 50-350A |
Welding Wire Size | 0.8mm - 1.2mm |
Power Supply | 380V/3Phase/50Hz |
Total Power Draw | 12kW |
Main Unit Weight | 85kg |
Main Unit Dimensions | 650×450×350mm |
Real-World Accuracy | ≤0.02mm/100mm |
Product Usage Scenarios
This integrated boring and welding machine will fix almost any worn bore on almost any heavy equipment. These are the jobs we get called for every day:
Construction Equipment
Excavators: Arm, boom and bucket pin holes; bucket linkages; swing bearing housings
Loaders: Front axle bores; bucket pivots; lift arm bushings
Bulldozers: Track frame bores; blade pivots; transmission housings
Cranes: Outrigger bores; boom hinge points; winch bearings
Mining Equipment
Crushers: Jaw crusher bearing bores; cone crusher main shaft housings
Conveyors: Pulley bearings; idler frames; drive shaft supports
Haul trucks: Wheel hub bores; suspension mounts; steering knuckles
Shovels: Dipper arm pin holes; boom pivots; crowd mechanisms
Marine & Offshore
Ships: Rudder shaft housings; propeller shaft bearings; winch drums
Offshore platforms: Crane bores; pump housings; valve bodies
Ports: Container crane hinges; forklift mast bores
Industrial & Power
Power plants: Turbine casing bores; pump bearings; generator end shields
Steel mills: Rolling mill bearing blocks; roll chocks; gearbox housings
Packaging
Every component is wrapped in 20mm thick foam padding, then wrapped in plastic to keep out moisture
All electrical parts are sealed in vacuum bags with desiccant
Everything goes into an 18mm thick plywood export crate (not the 12mm thin stuff that falls apart)
The crate is reinforced with steel bands top and bottom
We label every side clearly with model number, serial number, weight and handling instructions
Service Commitment
We know that when your multi functional boring and welding machine machine breaks, you need it fixed fast. You can’t wait 2 weeks for a part or a technician. That’s why our service is different.
1.12-month full warranty on all parts and labor. If something breaks because of a manufacturing defect, we’ll send you the replacement part for free, and we’ll pay for shipping.
2.Lifetime technical support for every machine we’ve ever sold. Even if you bought it 15 years ago, we’ll still help you fix it.
3.Free training: We can train your operators at our factory, or we can send an engineer to your facility. The training is hands-on, and it takes 1-2 days.
4.24/7 technical support: Our support team is made up of engineers who actually build and use these machines, not call center reps. You can call, email or WhatsApp us anytime, day or night.



