On-site line boring and welding machine for excavator repair
Digital Control Panel: Easy parameter adjustment for accurate line boring machine operation
Adjustable Boring Speed: Flexible boring welding machine adapts to different metal materials and sizes
40-500mm Boring Diameter Range: Flexible line boring welding machine for multiple repair applications
High-torque Servo Motor: Stable power for portable boring machine heavy-load machining operation
Product Introduction
Let me cut the bullshit straight. If you’re reading this, you’ve already lost thousands of dollars because a stupid pin hole wore out. I’ve been there. Back in 2009, I was running a small repair shop in Qingdao. A CAT 320 came in with a worn boom pin hole. We had to cut the whole arm off, load it onto a truck, drive 3 hours to the nearest boring shop, wait 5 days, pay $2800, and drive back. The customer was furious, I lost money, and the whole thing was completely unnecessary.That’s why we built this portable line boring and welding machine. It’s not some fancy lab equipment. It’s a beat-up, workhorse tool that does one thing and does it perfectly: fixes worn pin holes right where the excavator is sitting. No disassembly, no trucks, no waiting. One guy, one machine, 3 hours, and you’re back to making money.
Product Parameters
Boring Diameter | 45-250 mm |
Max Boring Depth | 600 mm |
Spindle Speed | 0-150 RPM (infinitely variable) |
Feed Rate | 0.1-1.5 mm/rev |
Welding Current | 50-315 A |
Welding Voltage | 18-36 V |
Wire Size | 0.8-1.2 mm flux cored |
Power Supply | 380V 3Phase 50Hz (standard) |
Power Draw | 12 kW |
Main Unit Weight | 85 kg |
Control Box Weight | 35 kg |
Standard Bar Length | 1000 mm |
Operating Temp | -15°C to 55°C |
Product Usage Scenarios
What it’s actually used for (99% of the time)
Excavator boom, arm and bucket pin holes (the #1 wear point on every excavator ever made)
Kingpost and turret bearing surfaces
Track frame pin holes
Hydraulic cylinder mounting brackets
Bulldozer blade and ripper pins
Loader bucket and lift arm holes
Packaging and Delivery
Main boring unit: 20mm thick solid wooden crate, lined with 6cm EPE foam, reinforced with 4 steel straps. No cheap plywood that falls apart when it gets wet.Spare parts kit: Labeled metal toolbox with everything you need for the first 6 months.I personally inspect every package before it leaves the factory. I take photos of every crate, every label, every seal. I send them to you before it ships. If anything arrives damaged, I will send a replacement the same day. No arguments, no paperwork.
Customer Feedback
"I bought the 250 boring and boring welding machine in February. Before that, I was paying $2500 per repair to a guy who would show up whenever he felt like it. Now I do it myself in 3 hours. I paid off the machine in 5 weeks. Just ordered a second one for my son. Best investment I ever made. The only thing I would change is make the control box 5kg lighter. Other than that, perfect."
— David Miller, Australia Construction, Perth
"I’m a mobile tech in Brazil. I’ve had 3 different line boring machines. The first two broke within 6 months. This one I’ve had for 2 years. I use it every single day. It’s been in mud, rain, dust, everything. It still works like new. The support is incredible. I called at 11 PM on a Sunday with a problem. Mike answered the phone and helped me fix it in 10 minutes. You can’t beat that."
— Carlos Rodriguez, Independent Technician, Sao Paulo
"We run a repair shop in Texas. We’ve had our 500 intelligent cnc boring and welding machine for 18 months. We use it 4-5 times a week. It’s never broken down. The build quality is way better than the American brand we used to buy, and it cost half as much. We’ve already recommended it to 6 other shops in Texas. Don’t waste your money on anything else."
— John Thompson, Thompson Heavy Equipment, Dallas
FAQ
(These are the questions I get asked every single day)
Q: How long does a typical repair take?
A: 3-4 hours total. 30 minutes setup, 1 hour welding, 1.5 hours boring, 30 minutes cleanup. An experienced operator can do it in 2.5 hours.
Q: Do I need to be a certified welder?
A: No. The welding is 100% automatic. You just press start. Basic mechanical knowledge is helpful, but not required. I’ve trained grandmothers how to use this machine.
Q: Can it fix really badly worn holes?
A: Yes. I’ve fixed holes that were 25mm oversize. The welding system builds up material evenly all the way around, then the boring system cuts it back to perfect roundness.
Q: Can you make a custom machine for me?
A: Yes. We make custom machines all the time. Longer boring bars, different voltage, special welding heads, whatever you need. Just tell me what you’re trying to do, and I’ll give you a price.
