Product Description
Our portable boring Machine is built for on-site machining and field repair service, it is a reliable solution for restoring worn, deformed, or misaligned bores without removing large components of the equipment.
The power unit of the machine is equipped with a 3.1KW servo motor, it ensures stable torque, smooth cutting performance, precise speed control and consistent machining quality across various materials and bore sizes. Its portable and compact structure allows to do easy transportation and quick installation directly at the job site, even in confined or hard-to-access locations.
The machine is equipped with a visualized control panel, the intuitive and user-friendly operation is ideal for reducing operator learning time and minimizing setup errors. It is suitable not only for experienced technicians, but also for field service teams who are seeking for efficient and repeatable repair results.
By eliminating the need of disassembly and transportation, this portable boring solution significantly reduces downtime, repair costs, and production interruptions, it is an ideal choice for demanding industrial environments.
- True Portable Design for Field Machining
The compact and lightweight structure enables rapid deployment on-site, it is ideal for remote locations, confined spaces, and large stationary equipment.
- Powerful 3.1 kW Servo Motor Drive Unit
Our machine provides stable output, precise speed control, and smooth cutting performance for accurate bore restoration.
- Visualized & Easy-to-Use Control Panel
Clear interface allows operators to quickly adjust parameters, monitor machining status, and improve operational efficiency.
- On-Site Repair, No Disassembly Required
Machining is performed directly on the equipment for avoiding transportation of heavy components and minimizing downtime.
- High Accuracy Bore Restoration
It ensures precise alignment operation and consistent machining performance for repairing worn, oval, or misaligned bores.
Product Specification
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MB40300 |
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Portable Boring |
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Standard Line Boring Ability |
Optional Extended Auto Bore Welding Ability |
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Boring Bar Length |
1600mm, 1200mm, 750mm |
Welding Rod Dia. |
40mm |
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Bore Dia. |
40-300mm |
Welding Dia. |
40-300mm |
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Boring Bar Dia. |
50mm,35mm |
Welding Rod Length |
200,240,300,380mm |
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Lead Screw Stroke |
280mm |
Welding Supply |
MIG |
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Power |
3.1KW |
MIG Type |
200a-500a |
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Voltage |
220V, 380V |
Welding Wire Dia. |
0.8, 1.0, 1.2mm |
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RPM |
50-300rpm |
Welding Torch Cable |
4500mm |
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Torque |
105N.m |
N/A |
N/A |
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Speed Control |
Stepless |
N/A |
N/A |
Main Machining Functions
1.Restoration of worn and damaged bores
2.Re-machining of deformed or oval holes back to original diameter
3.Accurate coaxial alignment of multiple bore positions
4.Precision machining after welding or buildup repair
5.On-site correction of bore misalignment caused by long-term wear
Industries & Applications
Our portable boring machine is widely used in industries where on-site machining and fast turnaround are critical, the main industries are as following:
1. Construction machinery
2. Mining equipment and earthmoving machinery
3. Shipbuilding and marine maintenance
4. Cement plant equipment
5. Steel mill and metallurgical equipment
6. Heavy industrial and structural maintenance
Ideal For
1. Field service and maintenance teams
2. Heavy equipment repair contractors
3. Mining and construction equipment operators
4. Industrial plants seeking to reduce downtime
5. On-site machining and repair specialists
Why Choose Portable Boring for On-Site Machining?
The worn or misaligned bores is able to be repaired directly on site by the portable borer, where the equipment operates, it will restore original tolerances and extending service life without costly tear-down, transport, or extended downtime.
Line Boring Applications from Customers

Other Machine Tools

What is The Price Of Your Portable Line Borer?
Price typically ranges between USD 2,633 and USD 3,033 based on the specified model.
Learn more on our portable line borer for for field machining.
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