Our Product
Desktop pipeline cutting and beveling machine, hem cnc pipeline high-speed beveling machine,desktop high-speed pipeline beveling machine, OD-Mounted Pipe Cutting and Beveling machine, Internal expansion type pipe beveling machine, OD-Mounted Auto-feed Pipe Beveling machine, Portable Flange Processing Machine, Portable manual flange machine, External card flange processing machine, Plate beveling machine, Portable line boring machine.

Your Leading Portable Line Boring Machine Supplier
Zhejiang Wellnit Machinery Manufacturing Co., Ltd. specializes in the production of electric, pneumatic. hydraulic, CNC, and explosion-proof groove cutting machinery. We have many types ofportable line boring machine, which are divided into Boring Welding Machine and line boring and welding machine. The Wellnit Portable Line Boring Machine is a precision machining tool specifically designed to repair damaged or worn holes and bearing housings on large equipment directly at the site.
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Boring Welding MachineThis portable mobile boring machine with automatic welding function, paired with a mobile boring machine, is designed for field construction.
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Portable Shaft-end LatheOur portable shaft-end lathe represents a breakthrough in on-site machining technology, particularly when combined with an auto bore welder for comprehensive repair applications.
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Boring and Welding MachineThe main application scope includes: processing various rotary holes, articulated holes, and shaft pin holes on engineering machinery structures after welding with an automatic bore welding machine,
Why Choose Us?
Advanced Equipment
The company owns hundreds of pieces of production equipment, including machining centers, CNC lathes, gear shaping machines, wire cutting machines, surface grinders, and cylindrical grinders.
Broad Market
After years of development, the company's ten product series and dozens of product varieties are exported to over 60 countries and regions, including Europe, America, the Middle East, and Southeast Asia.
Wide Range of Applications
Our products are widely used in pipeline installation and maintenance in industries such as petroleum, power generation, steel, chemical industry, shipbuilding and natural gas, nuclear industry, and pressure vessels.
Custom Service
For special working conditions (such as thick-walled pipes and complex groove shapes), the company can provide customized solutions.
What is a portable line boring machine?
The Wellnit Portable Line Boring Machine is a precision machining tool specifically designed to repair damaged or worn holes and bearing housings on large equipment directly at the site. It utilizes a sturdy boring bar and an adjustable cutting head to perform boring operations in situ, restoring the hole's tolerance, concentricity, and surface finish. This machine perfectly solves the problem of disassembling and transporting components weighing tens or even hundreds of tons back to the workshop. It is a key piece of equipment for achieving rapid on-site repairs and dramatically reducing downtime costs.

Specifications of Portable Line Boring Machine
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Technical specification |
Type specification |
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Processing way |
Turning |
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Machining diameter range |
50-300 mm |
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Support way |
Shaft end fixed disk |
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Cylindricity |
0.05 |
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Roughness |
3.2 μm |
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Structure |
Dc servo motor and reducer |
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Motor rated rotating speed |
3000 r/min |
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Spindle rated power |
1.5 kW |
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Motor rated output torque |
100 N·m |
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Feed drive |
Magnetic stripe |
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Feed mode |
Fast and slow |
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Feed stroke |
300 mm |
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Knife |
Turning tool |
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Magnetic stripe |
Quantitative centralized lubrication |
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Power supply |
220V±10%,50 Hz |
Functions of Portable Line Boring Machine

Precision
One of the key advantages of line boring machines is their ability to deliver high precision and accuracy. Utilizing a computer-controlled system, these machines maintain consistency throughout the boring process, resulting in finished bores that meet the required tolerance.

Efficiency
Compared to traditional methods, line boring machines complete the boring process in significantly less time. Their efficiency shines through as they accurately and swiftly bore large diameter bores, minimizing downtime and generating cost savings.

Versatility
Portable Line boring machines are incredibly versatile, capable of working on a wide range of equipment. From excavators and bulldozers to cranes and other heavy machinery, these machines find applications in various industries, including mining, construction, and marine.

Portability
Thanks to their portability, these machines can be easily moved to repair or maintenance sites. This eliminates the need to disassemble the equipment and transport it to a repair shop, resulting in substantial time and cost savings.
Product Advantages and Features
Strong On-Site Adaptability: Modular design with lightweight components allows for quick assembly and positioning in narrow, complex, or high-altitude harsh site environments.
Excellent Machining Precision: Equipped with a high-rigidity boring bar and precision feed system, easily achieves IT7 tolerance level and surface finish above Ra3.2, ensuring perfect fit with new bearings.
Efficient Power and Drive: Offers multiple power options including electric, hydraulic, or pneumatic, providing high torque and smooth operation, suitable for cutting materials ranging from cast iron to high-strength alloy steel.
Convenient and Safe Operation: User-friendly control design supports remote operation, allowing operators to control the machine from a safe distance; setup and adjustments are simple, reducing preparation time.

Application Scope of Portable Line Boring Machine
Mining: Mining equipment operates in some of the harshest environments, and downtime can result in massive production losses. Portable line boring machines allow for quick repairs on everything from bucket pins to hydraulic systems.
Construction: Bulldozers, cranes, and excavators all rely on precision components to operate efficiently. Portable line boring machines help construction companies maintain their fleets without interrupting job site progress.
Oil and Gas: Offshore rigs and oilfield equipment are often located far from traditional repair facilities. Portable line boring machines enable on-site repairs, ensuring continued operation in critical applications.
Marine: Ships and marine equipment experience wear and tear due to continuous use in saltwater environments. Line boring machines can handle repairs on propeller shafts, rudders, and other crucial components while the vessel remains in service.
Forestry: Logging equipment faces constant strain, and repairs often need to be performed in remote locations. Portable line boring machines allow for quick, efficient repairs without having to move equipment.
Machinable Materials
Our portable boring machine, with its powerful performance and high-quality cutting tools, can efficiently process a variety of engineering materials:
Cast Iron (Gray Cast Iron, Ductile Iron): Commonly used in equipment bases and housings.
Carbon Steel and Alloy Structural Steel: Used for manufacturing shafts, gears, and other components.
Stainless Steel: Suitable for components requiring corrosion resistance, such as in chemical and marine applications.
Non-Ferrous Metals: Such as bronze bushings and aluminum alloy housings.
On-site construction case



Maintenance of Portable Line Boring Machine
To ensure longevity and optimal performance, regular maintenance of portable line boring machines is essential. Routine inspections for wear and tear, cleaning to remove any debris or material build-up, lubrication of moving parts, and timely sharpening or replacement of cutting tools are necessary steps.
Additionally, it's beneficial to follow manufacturer guidelines for maintenance schedules. Periodic calibration of the machine will also ensure its accuracy and precision are maintained over time. Professional servicing may be required for complex adjustments or repairs.
Our Factory



Certificate

After-Sales Service
Warranty period: 1 Year free warranty (non-human damage).
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Operation training is provided.
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Paid technical support is still provided outside the warranty period (negotiable fees).
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Provide equipment transportation services.
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Recurring visits.
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Payment Terms
L/C; T/T; Paypal; West Union; MoneyGram etc;
Sample order: 100% payment before shipment;
Bulk order: 50% deposit balance before shipment.
Packing & Shipping
Delivey Time: Generally it is 3-7 days if the goods are in stock. Or 30 days, it's depand to quantity.
Packing Term: Export packing wooden cases, or customer customized requirements.

FAQ
As one of the leading portable line boring machine manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade portable line boring machine for sale here from our factory. All customized machines are with high quality and low price.
Portable Shaft end Lathe, Boring Welding Machine, portable line boring machine
