Inner bore welding and boring machine
Fast Repair Efficiency: Portable boring machine shortens maintenance cycles and improves productivity
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High-precision Hole Repair: Portable line boring welding machine restores worn holes with accurate alignmentProduct Introduction
Our inner bore welding and boring machine is a rugged, field-proven 2-in-1 solution designed specifically for on-site repair of worn or damaged cylindrical bores in heavy machinery. Unlike traditional workshop-based equipment, this portable system eliminates the need for costly disassembly and transportation of large components, cutting downtime by up to 80% compared to conventional repair methods .Engineered for harsh industrial environments, our bore welding and boring machine features heavy-duty construction with hardened alloy steel components and reliable electrical systems. Its modular design allows for quick setup in tight spaces, high-altitude locations, and even inverted positions, making it the preferred choice for maintenance teams across construction, mining, agriculture, and marine industries worldwide .
Product Parameters
Standard Boring Range | 45-300mm |
Small Bore Kit (Optional) | 35-300mm |
Welding Range | 50-300mm |
Standard Boring Bar | 50mm x 1500mm |
Optional Long Bar | 50mm x 2000mm |
Max Boring Depth | 1500mm (standard)2000mm (long bar) |
Max Welding Depth | 1200mm |
Spindle Speed | 0-300 RPM stepless |
Auto Feed Speed | 0-100 mm/min |
Welding Process | MIG/GMAW (short circuit + pulse) |
Wire Sizes | 0.8mm, 1.0mm, 1.2mm |
Welding Current | 50-350A |
Main Motor | 1.8kW Siemens |
Power | 220V/380V 3-phase 50/60Hz |
Total Weight (Standard Kit) | 85kg |
Control System | Digital PLC with LCD |
Product Details
Let me tell you what makes this machine different from all the cheap garbage you see on Alibaba.
1. Automated Welding That Doesn’t Suck
Manual bore welding is garbage. Even the best welder in the world gets tired after 2 hours. You get thin spots. Thick spots. Porosity. Slag inclusions. It’s a nightmare.Our integrated boring and welding machine automated system takes the human out of it. It spins at a constant speed. Feeds wire perfectly. Moves up the bore exactly 1mm per rotation. You set the parameters once. Press start. Walk away. It will lay down a perfect, uniform layer 360 degrees around the entire bore. No mistakes.
2. So Simple A Trainee Can Run It
You don’t need an engineering degree. You don’t need 10 years of welding experience.
The control panel has 6 big buttons. A big LCD screen. No confusing menus. No touchscreens. I’ve trained 19-year-old kids who just graduated high school. I’ve trained 62-year-old mechanics who hate computers. Everyone is running jobs on their own after 4 hours.
Packaging
I take packaging seriously. I’ve seen too many machines arrive broken because someone used a cheap plywood box.
Every machine goes into a 12mm thick solid wood crate. Custom-cut high-density foam inserts hold every part in place. Nothing moves. Nothing rattles. All metal parts are wrapped in anti-rust paper and plastic film. Reinforced metal corners. Steel strapping. Waterproof plastic covering.
Last year a crate fell off a forklift at the port in Los Angeles. Rolled 3 times. Landed on its corner. The customer opened it up. The machine was perfect. Not a scratch.
Factory Profile
We’re a factory in Jining, Shandong. Every single part is made in-house. From cutting the raw steel to painting the final machine. We don’t outsource anything. We control every step.All our engineers used to be field mechanics. They don’t sit in offices drawing pretty pictures. They’ve spent years in the dirt fixing equipment. They know what works. They know what breaks. Every change we make comes from customer feedback.We’re ISO 9001:2015 certified. All our multi functional boring and welding machine products meet CE standards. You are welcome to visit our factory anytime. I will pick you up from the airport. Put you up in a nice hotel. Take you to dinner. Show you every part of the workshop. You can watch us build a machine from start to finish. You can test one out yourself. No sales pitches. No pressure. Just honest talk.
Service Commitment
I know the biggest fear people have when buying from China is that once you pay, you’ll never hear from me again. That’s not how I do business.
My Promise To You
1-Year Full Warranty: If anything breaks because I built it wrong, I send you the part for free. I pay for shipping. No questions asked.
Lifetime Technical Support: Forever. If you have a question 15 years from now, call me. I will answer.
Spare Parts Guarantee: I keep all spare parts in stock for at least 12 years after you buy your machine. I will never discontinue parts.
What Happens If Something Breaks?
Call or WhatsApp me. My phone is on 24/7. Even on Christmas. Even at 3 AM.
95% of problems can be fixed over a video call. I will walk you through it step by step.
If you need a part, I ship it the same day via DHL. It will arrive in 3-5 days anywhere in the world.
If it’s a major problem that can’t be fixed remotely, I will send a technician to your location. You only pay for their flight and hotel. No labor charge.
I don’t just sell you a machine. I become your partner. If you succeed, I succeed.




