PATENTED SYSTEM · DUAL SYSTEM
Maucotools portable line boring machines restore worn bores and housings directly on the component, from Ø22 to Ø800 mm, with no disassembly. With the patented Dual System, the same machine performs line boring and bore welding in a single set-up.
The DUAL SYSTEM is the revolutionary and patented technology that makes our portable machine tools truly modular: built in two separate modules that can perform independent operations.
Each module weighs approximately 17 kg, making transport and installation possible by a single operator without hoists or cranes.

No hoists or cranes needed. Weight distributed for manual assembly by a single operator. The most versatile portable boring machines on the market.
The splittable system allows separating the machine into two independent modules:
Independent motors allow simultaneous boring and overlay welding operations, or boring and facing, drastically reducing intervention times on industrial sites.
Integrated welding or a separate welder? Read the guide to the portable line boring and welding machine.


The patented design eliminates vibrations during machining, guaranteeing surface finish quality and centesimal tolerances even in the most demanding conditions.
Compare all boring machines in the Dual System range. From the compact START160 to the powerful LBM600X.
| MODEL | BORING RANGE | WELDING | POWER | RPM | ACTION |
|---|---|---|---|---|---|
LBM SERIES — LINE BORING MACHINES | |||||
LBM250 | Ø22 - 250 mm | Ø32 - 250 mm | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
LBM400 | Ø42 - 400 mm | Ø32 - 400 mm | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
LBM600 | Ø42 - 600 mm | Ø32 - 600 mm | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
LBM600XMAX POWER | Ø62 - 600 mm | Ø32 - 600 mm | Electric 2.3kW | Hydraulic | Speed I: 30-90 RPM Speed II: 50-140 RPM Speed III: 130-400 RPM Speed IV: 210-630 RPM | VIEW |
LBM800XMAX POWER | Ø62 - 800 mm | Ø32 - 800 mm | Electric 2.3kW | Hydraulic | Speed I: 30-90 RPM Speed II: 50-140 RPM Speed III: 130-400 RPM Speed IV: 210-630 RPM | VIEW |
OB SERIES — ORBITAL BORING MACHINES | |||||
OB200 | Ø22 - 200 mm | Optional (extra kit) | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
OB400 | Ø42 - 400 mm | Optional (extra kit) | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
START SERIES — COMPACT BORING MACHINES | |||||
START160 | Ø22 - 160 mm | Optional (extra kit) | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
START160X | Ø22 - 160 mm | Ø32 - 160 mm | Electric 1.8kW | Hydraulic | Speed I: 54-126 RPM Speed II: 180-423 RPM | VIEW |
FAQ
A portable line boring machine is a machine tool that mounts directly on the component to be repaired and restores worn bores, housings and bushings to nominal diameter, with no need to dismantle the part or send it to a workshop. It is used on excavators, cranes, presses, turbines and Oil & Gas plants to cut downtime.
None in practice: both names describe the same machine. "Line boring" stresses that the tool machines one or more aligned bores on a single axis; "portable boring machine" simply says that the machine goes to the part. In both cases an existing bore is machined on site to machine-shop tolerances.
Start from the diameter of the bore to be restored: START160 and START160X cover Ø22 to 160 mm, OB200 up to Ø200 mm, LBM250 Ø22 to 250 mm, LBM400 and OB400 Ø42 to 400 mm, LBM600 and LBM600X up to Ø600 mm, LBM800X Ø62 to 800 mm. The configurator points to the right model for your part and sector.
Yes. With the Dual System the same portable line boring machine performs bore welding on the worn seat and then bores it back to nominal size, without removing the module or re-centering. Welding is built into the LBM series and the START160X; on OB200, OB400 and START160 it is added with the optional kit.
The price depends on the model, the working range, the electric or hydraulic version and the kits included, so there is no single price list. Maucotools prepares a tailored quotation within 24 hours of your request, with payment by bank transfer or credit card and financing options on request. To see what drives it, read our guide to the portable line boring machine price.
Discover how the patented Dual System technology can reduce your machine downtime and increase workshop productivity.