On-site boring and welding machine
Dual-function Integrated Design: Boring and welding integrated machine, 1 device meets two mechanical maintenance needs
Cost-saving & Low Consumption: Energy-saving structure cuts daily power cost for integrated boring welding machine
Quick Mode Switching: One-click conversion for boring and welding integrated machine, shorten operation preparation time
Multi-scene Universal Application: Boring and welding integrated machine for engineering, mining, agricultural machinery and auto repairProduct Introduction
We built this on-site boring and welding machine for real field mechanics, not just lab tests. Unlike flimsy single-function boring bars or bulky workshop welders that can’t leave the shop, our all-in-one unit lets you do full bore overlay welding AND precision line boring right where your machine sits. No full disassembly, no expensive heavy haul, no waiting around for a machine shop slot. It works in tight boom cavities, dusty job sites, 45°C heat, and even on offshore vessels. Every part is built to take the abuse of daily field use, not just look good on a spec sheet.
Product Parameters
Specification
| Specification | JS40 (Compact Model) | JS50 (Universal Model) | JS90 (Heavy-Duty Model) |
Boring Diameter Range | Ø35mm – Ø200mm | Ø55mm – Ø350mm | Ø65mm – Ø600mm (Custom up to 1000mm) |
Inner Bore Welding Range | Ø40mm – Ø250mm | Ø55mm – Ø350mm | Ø70mm – Ø600mm |
Standard Boring Bar | Ø40mm × 1500mm (Custom length available) | Ø50mm × 1600mm (Custom length available) | Ø90mm × 2000mm (Custom length available) |
Spindle Speed | 0 – 300 RPM (Stepless Adjustment) | 0 – 200 RPM (Stepless Adjustment) | 0 – 150 RPM (Stepless Adjustment) |
Max Single-Side Cutting Capacity | 3mm (A3 Steel) | 3.5mm (A3 Steel) | 5mm (A3 Steel) |
Feed Speed | 0 – 100 mm/min (Manual + Auto Dual Mode) | 0 – 120 mm/min (Manual + Auto Dual Mode) | 0 – 150 mm/min (Manual + Auto Dual Mode) |
Machining Accuracy | Roundness ≤ 0.03mm, Surface Roughness Ra3.2 | Roundness ≤ 0.02mm, Surface Roughness Ra3.2 | Roundness ≤ 0.02mm, Surface Roughness Ra1.6 |
Main Motor | 1.5kW Sealed Brushless Servo | 2.2kW Sealed Brushless Servo | 4kW Heavy-Duty Sealed Servo |
Power Supply | 110V/220V Single Phase, 50/60Hz | 220V/380V Single/Three Phase, 50/60Hz | 380V Three Phase, 50/60Hz |
Standard Stroke | 390mm (Customizable) | 400mm (Custom up to 1000mm) | 600mm (Custom up to 1500mm) |
Main Unit Net Weight | 58kg (breaks into 2 carryable parts) | 85kg (breaks into 3 carryable parts) | 180kg (modular breakdown for transport) |
Skilled Operator Setup Time | ≤ 30 Minutes | ≤ 40 Minutes | ≤ 60 Minutes |
Product Details
1. Sealed Industrial Servo Control (Built For Dusty Job Sites)
We don’t use cheap stepper motors that skip steps under load, or fragile circuit boards that die the second they get dust in them. Our portable line boring machine brushless servo motors are fully sealed, with built-in overload and overheat protection, and the closed-loop control system automatically adjusts for cutting resistance—even when you’re machining through hardfaced weld material.
2. Modular Portable Design (Fits Tight Spaces No Workshop Machine Can Reach)
The entire machine breaks down into lightweight, manageable components, no crane or forklift needed for transport and installation. The spherical bearing mounting system lets you align and fix the bar in 30 minutes or less, even in narrow, hard-to-reach spaces like excavator boom interiors, ship engine compartments, and underground mining equipment.
Standard Export Packaging
Inner Protection: Every precision part (servo motor, control cabinet, boring bar, tool holders) gets wrapped in 2 layers of shock-absorbent EPE foam and sealed in waterproof plastic film. We add extra reinforced foam around the threaded ends of the boring bar—this is the #1 part that gets damaged in shipping, so we take extra care here.
Outer Case: The entire bore welder unit goes into a thick, fumigated solid wood case, fully ISPM 15 compliant for international shipping. We reinforce every corner with steel brackets, and add moisture-absorbent desiccant packs inside to prevent rust during long ocean voyages.
Custom Options: We offer non-fumigation plywood cases, heavy-duty flight cases for crews that move the machine between job sites weekly, and custom branded packaging for distributors.
Documentation: Every case has a printed, numbered packing list on the outside in English, so you can check off every part when it arrives, and customs can clear it fast.
Shipping Details
In-Stock Standard Models: Shipped within 3-7 business days after payment confirmation.
Custom Builds: 15-30 business days, depending on customization complexity. We’ll send you weekly build progress photos, so you know exactly where your order is at.
Trade Terms: We support EXW, FOB, CIF, DDP, and all common international trade terms.We’ll send you full tracking information and all shipping documents the second your order leaves the factory.
Customer Feedback
These are unedited messages from real customers, no paid testimonials or scripted lines.
“We’ve had our JS50 line bore welder for 3 years now, use it every week on our rental fleet of 40+ excavators and loaders across Germany. Before this, we’d have to haul broken booms 100km back to our workshop, which took 3-5 days minimum, and cost a fortune in hauling and downtime. Now we drive to the job site, mount the machine, weld and bore the hole, and are done in 8 hours max. We’ve saved over 60% on repair costs, easy. The only thing we wish was a longer standard power cord, but we just extended it ourselves, no big deal. We just ordered a second unit for our northern branch.”
— Markus Weber, Operations Manager, German Construction Equipment Rental
“We run a shipyard in Brazil, and we bought 5 of these machines 2 years ago. Before, we had to dry dock a vessel for 2 weeks just to fix a rudder pin bore or engine cylinder bore. Now we do it in 2 days, no full disassembly, no exorbitant dry dock fees. We’ve had to order a few replacement tool holders over time, but that’s just normal wear and tear. Our repair efficiency is up 70% since we started using these.”
— Carlos Mendes, Engineering Director, Brazilian Shipyard
Service Commitment
We don’t just sell you a portable boring bar machine machine and disappear. We’ve got your back for the entire life of the equipment, no fine print, no hidden fees.
Pre-Sales Support
1-on-1 technical consultation with our engineering team. We won’t push you to buy the most expensive unit—if you only fix small excavators, the JS40 is all you need. We’ll ask for your bore drawings, the materials you work with, and your job site conditions, then give you a custom recommendation.
Free access to real customer references from your country and industry, so you can talk to actual people who use our machines every day.
Full demo videos, operation manuals, and virtual factory tours, so you know exactly what you’re getting before you buy.
Warranty Policy
12-month full machine warranty, covers all manufacturing defects, excluding normal wear and tear. If a part breaks due to a factory defect, we’ll send you a replacement for free, and cover all shipping costs.
Custom & OEM Service
Full OEM/ODM for distributors: custom branding, packaging, color scheme, and spec tweaks for your local market.
Fully custom machine builds for special jobs: explosion-proof models, extra long stroke, custom diameter ranges, and specialized CNC functions for repeat work. Just send us your requirements, and we’ll give you a fixed quote.
