PORTABLE LINE BORING MACHINE The DIG-DOG Portable Boring Machine is a versatile and indispensable piece of equipment, meticulously designed for the on-site maintenance of construction machinery. This robust machine excels in processing small pipe inner holes and concentric spacing holes, proving its mettle in the efficient upkeep of machinery like excavators, cranes, and loaders. By significantly reducing maintenance costs and boosting operational efficiency, it has become an essential tool for construction professionals.
Main Application: This machine specializes in machining revolving holes, articulated holes, and shaft pin holes on various engineering machinery structures post-repair welding. It is adept at installing hole sleeves after reaming. From repairing and processing concentric holes to executing one-time positioning processing of porous on excavators, loaders, presses, and cranes, this machine ensures perfect coaxiality of the porous.

TYPE |
BM-40 |
BM-50 |
BWM-50S |
BWM-50P |
BM-60 |
BM-60S |
Main motor |
1.5KW Brushless DC |
1.5KW Brushless DC |
3KW Vertical servo |
3KW Vertical servo |
2KW DC servo |
2KW DC servo |
Power of cutter moving motor |
120W |
120W |
120W |
120W |
120W |
120W |
Main motor output speed |
125r/min |
125r/min |
0-300r/min |
0-300r/min |
100r/min |
80r/min |
Motor speed control |
CVT |
CVT |
CVT |
CVT |
CVT |
CVT |
Feed way |
Tiptronic |
Tiptronic |
Tiptronic |
Tiptronic |
Tiptronic |
Tiptronic |
The boring bar diameter |
40mm |
50mm |
50mm |
50mm |
60mm |
60mm |
Scope of boring |
45-200mm |
55mm-260mm |
55mm-260mm |
55mm-260mm |
65--500mm |
65-500mm |
Feed stroke |
380mm |
380mm |
200mm |
200mm |
420mm |
740mm |
Maximum cutting capacity on one side |
2-3mm |
2-3mm |
3mm |
2mm |
2-3mm |
2-3mm |
Machining roundness |
0.03mm |
0.03mm |
0.02mm |
0.03mm |
0.03mm |
0.05mm |
roughness |
3.2um |
3.2 |
3.2 |
3.2 |
3.2um |
3.2um |
Installation |
Weld |
Weld |
Weld |
Weld |
Weld |
Weld |
Hole range |
* |
* |
55-230mm |
55-230mm |
* |
* |
Single side welding thickness |
* |
* |
3-4mm |
2-3mm |
* |
* |
Wire type |
* |
* |
1.0 |
1.0 |
* |
* |





What size of line boring machine should I choose?
With a variety of sizes available, selecting the optimal line boring machine depends on the specific job requirements. No single machine can cover all diameters accurately, so it's crucial to assess the types of tasks you'll be performing to make the right choice.
What boring bar length should I specify?
Choosing the right boring bar length largely hinges on your job's needs. It's important to note that for small diameter boring bars, increased length can lead to a higher risk of sagging. Therefore, selecting the appropriate length is crucial for optimal performance.
What are the lead times for line boring machine?
Lead times can vary based on the machine size and stock availability. Given that each machine package is custom-built from numerous available options, planning ahead is essential. It can take several weeks from payment receipt to machine delivery, so early preparation is advised.
Can DIG-DOG supply a machine in my area?
Absolutely. Our portable boring machines are exported globally, ensuring that high-quality maintenance solutions are accessible worldwide.
What maintenance is needed?
Proper maintenance is key to ensuring the line boring machine delivers years of reliable and precise performance. Regular cleaning, debris removal, and oiling are generally sufficient to keep the machine operating smoothly, providing consistent results time after time.


