Excavator pin hole boring machine
High Precision Boring: Line boring machine restores worn holes with high accuracy
Portable On-site Repair: Portable boring machine works directly on equipment, no disassembly needed
High Efficiency Operation: Reduces repair time and improves maintenance efficiency
Heavy-duty Industrial Design: Durable boring machine for continuous work
Wide Application Range: Suitable for excavators, loaders and heavy machinery
Product Introduction
Our excavator pin hole boring machine is a portable on-site tool—specifically made to fix those worn, elliptical, or misaligned pin holes that every excavator and heavy equipment operator deals with. If you’ve ever had to tear apart heavy excavator parts just to ship them to a workshop for boring, you know how much of a headache it is—wasting time, burning money, and leaving your equipment sitting idle. With our portable model, you don’t need to take apart the boom, arm, or bucket joints at all. Just bring the machine to your job site, set it up, and do precise repairs right there—no extra hassle, no unnecessary work.It’s perfect for excavator maintenance crews, construction companies, and heavy machinery repair shops. It fits most excavator models—from 5-ton mini excavators to 50-ton large ones—and covers almost all common pin hole sizes. You can use it on other heavy equipment too—loaders, bulldozers, cranes—so it’s a one-tool solution that saves you money in the long run.
Product Parameters
Parameter Name | Specification |
Model | JS-300 (We can customize it to fit exactly what you need) |
Boring Range | 30mm - 300mm (1.2 inches - 11.8 inches)—fits just about every excavator pin hole out there |
Machining Accuracy | Roundness ≤ 0.02mm, Coaxiality ≤ 0.03mm, Surface Roughness Ra ≤ 3.2μm—good enough to meet factory standards, no issues with fitting pins |
Main Motor Power | 3.1KW—plenty of torque for heavy cutting, no struggling with tough materials like alloy steel |
Stepper Motor Power | 400W—keeps feeding smooth and precise, no jittering that messes up the hole |
Voltage | 220V/380V, 50/60Hz—dual voltage, works anywhere in the world, no need for extra adapters |
Spindle Speed | 50-300 RPM—stepless adjustment, so you can set it to match whatever material you’re cutting |
Maximum Single-Side Cutting Capacity | 9mm—handles deep cuts in one go, no need to make multiple passes |
Machine Weight | 135-165kg (varies by configuration)—light enough for a small team to move, heavy enough to stay stable while working |
Overall Dimension (L×W×H) | 850×600×550mm—compact enough to fit in the tight spots on job sites |
Control Mode | Manual + Remote Control + Automatic—super easy to use, even for guys who haven’t run this kind of machine before |
Product Details
1. Installation & Alignment System
The machine comes with an adjustable support base and laser alignment tool, so setting it up and lining it up with the pin hole is super easy. You can mount it horizontally, vertically, even upside down—great for those hard-to-reach pin holes on booms and arms. The laser makes alignment spot-on, so you don’t waste time messing with manual adjustments, and you get accurate results every single time.
2. Control System
The electric control cabinet is separate, with a clear digital display that shows spindle speed, feeding speed, and machining depth in real time. You can use the remote control to operate it from a safe distance—no need to stand right next to the cutting area, which keeps your guys safe. The automatic feeding and knife retracting feature cuts down on manual work, keeps the quality consistent, and keeps your operators from getting worn out.
3. Sealing & Protection
We use a fully sealed lubrication system—no oil leaks, and all moving parts run smooth. The cutting area has a protective cover to stop metal chips from flying around, keeping operators safe and the machine clean. All electrical parts are IP54 waterproof and dustproof, so it works fine outdoors and in harsh conditions—no need to worry about rain or dust ruining it.
Packaging and Delivery
Packaging Details
We take packaging seriously—we don’t want your machine damaged during shipping. Here’s how we pack it:
•Each machine is wrapped in waterproof, shockproof foam to keep the surface and parts from getting scratched or dented—no cosmetic damage, no broken parts.
•We put the wrapped machine in a fumigated plywood crate—meets international export standards—so it stays dry, mold-free, and safe during long shipping, even across oceans.
•All accessories—cutting tools, support bases, laser alignment tools, remote control, user manual—are packed in separate boxes and placed in the same crate, so nothing gets lost in transit.
Customer Visit
We love having customers visit our factory—come see our production strength and product quality for yourself. Every year, hundreds of customers come—large construction companies, machinery repair shops, international distributors—they want to see how we make our machines, and we’re happy to show them around.
During your visit, our team will show you around the production workshop, R&D center, and testing area—explain how we make the machines, design them, and check their quality. You can watch the machine work, test it yourself, and talk to our R&D team to get a custom solution if you need it. No sales pitches, just honest answers to your questions.
Lots of customers tell us they’re impressed with our advanced equipment, strict quality control, and professional team—and they end up working with us long-term. We’ll pick you up from the airport or train station, and arrange accommodation and meals, so your visit is easy and comfortable—no stress, just a chance to see our operation firsthand.
