


PORTABLE LINE BORING WELDING MACHINE

Main Application: Machine the Revolving Holes, Articulated Holes, Shaft Pin Holes on Various Engineering Machinery Structures after Repair Welding, or Installing Hole Sleeves after Reaming. Repair and Processing Concentric Holes, One-time Positioning Processing of the Porous on Excavators, Loaders, Presses, Cranes, etc. to Ensure the 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 | * | * |





DIG-DOG is a branch of BONOVO Group. We have an independent brand and are dedicated to excavation projects in the construction machinery market.
DIG-DOG can provide excavators, wheel loaders, backhoe loaders, skid steer loaders, forklifts for the construction machinery industry, so that
you can buy not only a single machine, but also full range of multi-functional and customized attachments to deal with different work requirements.
DIG-DOG machinery products exported more than 80 countries, and DIG-DOG have our own brand agents in North America, South America, Europe and many other regions,and we welcome more friends to become our brand agents. We can provide customers with more convenient and comprehensive after-sales service. Choose DIG-DOG to make your excavation work more easier and more convenient, and choose DIG-DOG to fully realize the possibility of configuring more accessories for the machine.
What size of line boring machine should I choose?