Portable Bore Repair Machines for Heavy Equipment
JDA Machinery supplies portable line boring and bore welding machines for heavy equipment repair contractors, mobile machining service providers, maintenance workshops and mining equipment service companies.
Designed for suitable bore repair applications on excavators, loaders, earthmoving machinery and other heavy-duty equipment, these machines support the restoration of worn pin bores, pivot joints and linkage connections through material buildup and precision boring.
Whether you repair equipment in a workshop or provide on-site machining services, selecting the right machine starts with understanding your bore dimensions, machining requirements, installation conditions and welding needs.
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![Boring and Welding Machine]()
Boring and Welding MachineThe JDA BAW55160 Boring and Welding Machine combines portable line boring with automatic bore welding for repairing worn, deformed or damaged holes in heavy equipment. Its modular boring bar...view more -
![Boring and Welding Machine Tool]()
Boring and Welding Machine ToolThe JDA BAW40160 Boring and Welding Machine Tool combines portable line boring and automatic bore welding for on-site repair of worn pin holes, bushing bores and other compatible bores in heavy...view more -
![Boring Welding Machine]()
Boring Welding MachineThe JDA BAW55160 Boring Welding Machine combines portable line boring and automatic bore welding for on-site repair of worn pin holes and bushing bores in construction and mining equipment. Its...view more -
![Line Boring Machine with Welder]()
Line Boring Machine with WelderThe JDA BAW40160 Line Boring Machine with Welder integrates portable line boring and automatic MIG bore welding in one system. It is designed to rebuild worn internal bore surfaces and machine...view more -
![Line Boring Welder]()
Line Boring WelderThe JDA BAW55160 Line Boring Welder combines automatic internal bore welding and portable line boring in one system for on-site repair of worn bores on construction and mining equipment.view more -
![Line Boring and Bore Welder]()
Line Boring and Bore WelderThe JDA BAW40160 Line Boring and Bore Welder combines portable line boring and automatic bore welding for on-site repair of worn bores in heavy equipment. Its shared mechanical gearbox supports...view more
Machine Models and Technical Specifications
Choosing a suitable portable line boring and bore welding machine starts with understanding the working range and configuration of each model. Compare the specifications below to determine which machine is appropriate for your repair applications.
Machine Comparison
|
Specification |
Model A (Compact) |
Model B (Standard) |
Model C (Heavy-Duty) |
|
Boring diameter range |
40 mm – 200 mm (1.57" – 7.87") |
55 mm – 350 mm (2.17" – 13.78") |
65 mm – 600 mm (2.56" – 23.62") |
|
Bore welding diameter range |
40 mm – 300 mm (1.57" – 11.81") |
55 mm – 450 mm (2.17" – 17.7") |
65 mm – 600 mm (2.56" – 23.62") |
|
Boring bar diameter |
40 mm (1.57") |
50 mm (1.97") |
60 mm (2.36") |
|
Boring bar length |
1200 mm (47.2") |
1500 mm (59.0") |
2200 mm (86.6") |
|
Drive type |
Electric DC Motor (1500W) |
Electric AC Motor / Variable Speed Drive (2200W) |
High-Power Servo Motor / AC Drive (3400W) |
|
Feed adjustment |
Automatic & Manual (0–100 mm/min) |
Stepless variable feed (0–0.5 mm/rev) |
Servo-regulated precision feed with DRO |
|
Power requirements |
110V / 220V Single Phase, 50/60 Hz |
220V Single Phase, 50/60 Hz |
220V / 380V Single/Three Phase options |
|
Standard configuration |
Main machine, drive unit, 40mm bar, mounting brackets, basic tool holders, standard tool kit |
Main machine, drive unit, 50mm bar, universal mounting cones, auto-feed unit, basic welding head |
Main unit, 60mm chromoly bar, heavy-duty mounting kit, integrated bore welding system, Touch-DRO control |
|
Optional accessories |
Extension boring bars, magnetic base digital readout, specialized facing heads |
Facing head, bore welding extension kit, centering cones, extra tool inserts |
Remote pendant, specialized small-bore kits, automated skip-welding modules, heavy transport case |
How to Choose the Right Machine
When comparing portable line boring machines, consider the following factors alongside the published specifications:
Bore diameter
Confirm that the required finished bore diameter falls within the machine's supported boring range.
Bore welding requirements
Check whether the machine supports the required bore welding process and whether separate welding equipment is needed.
Machining depth
Match the boring bar length and support arrangement to the bore depth and workpiece geometry.
Bore spacing and alignment
Consider the distance between connected bores, mounting positions and the required alignment of the machining axis.
Installation conditions
Evaluate the available clearance, mounting surfaces and access for the machine, drive unit and tooling.
Power and accessories
Verify the power supply, drive requirements, mounting components and cutting tools needed for the intended repair.
Typical Applications
Construction Machinery
Common repair applications include excavator boom and arm pin bores, bucket connection bores, linkage joints and loader attachment points. Wear in these areas can affect pin fit, bushing installation and joint alignment. For suitable components, bore welding can rebuild worn material before line boring restores the required bore dimensions.
Mining and Earthmoving Equipment
Mining and earthmoving equipment operates under demanding working conditions that can contribute to wear in pivot joints, linkage connections and other load-bearing bore locations. Portable machining equipment can support repairs at a maintenance facility or job site, subject to the component geometry, installation conditions and machine's working range.
Industrial Machinery and Heavy Equipment Components
Other potential applications include pivot assemblies, large machinery components and equipment connection points with worn cylindrical bores.
On-Site Installation and Machining Setup
On-site bore repair requires suitable mounting, alignment and working clearance. Before purchasing a portable line boring and bore welding machine, assess the installation conditions at the intended repair location.
Mounting and Workpiece Access
The machine must be secured using a mounting arrangement suitable for the workpiece geometry. Confirm the available mounting surfaces, support points, fixtures and clearance required for installation.
Bore Alignment
Determine how the machining axis will be established relative to the target bore or connected bores. Where multiple bore locations must remain aligned, identify the appropriate alignment references and measurement method before machining begins.
Boring Bar Length and Support
Match the boring bar length and support arrangement to the bore depth, distance between mounting points and machining configuration. The required setup depends on the component geometry and the machine's supported working range.
Working Clearance and Power Supply
Allow sufficient space for mounting, adjustment, tool changes and drive operation. Confirm the electrical supply and identify any external drive units, welding equipment, cables or other items required for operation.
Transport and Handling
For mobile repair services, consider the dimensions and weight of the machine, boring bars, mounting components and accessories. Confirm how the equipment will be transported and positioned at the worksite.
Machining Accuracy and Quality Control
Bore Diameter and Dimensional Tolerance
Confirm the required finished diameter and dimensional tolerance. Ask for the applicable machine accuracy specifications and the conditions under which any stated accuracy is measured.
Bore Alignment
For connected bores or pivot joints, evaluate the required alignment and the method used to establish and verify the machining axis. The achievable result depends on the setup, workpiece geometry and measurement procedure.
Surface Finish
Identify the surface finish required by the repair specification. The final result depends on the workpiece material, cutting tools, machining parameters and finishing procedure.
Machining Stability
Review the boring bar dimensions, support arrangement, mounting rigidity and drive configuration. These factors influence machining stability and should be considered in relation to the required bore size and working conditions.
Process Control
Check the available rotation and feed adjustments, operating controls and applicable setup procedures. Confirm that the machine configuration supports the intended machining process.
Final Inspection
Establish how the repaired bore will be measured and accepted. Depending on the repair requirements, inspection may include bore diameter, alignment, geometry and surface finish using suitable measuring instruments.
Standard Configuration, Optional Accessories and Technical Support
The supplied configuration should be confirmed for the selected model before an order is placed. Components and accessories may vary according to the machine type and the repair requirements.
Machine Configuration
Depending on the model, the equipment package may include:
Main machine and drive unit
Boring bar and associated mounting components
Support brackets or mounting fixtures
Cutting tools and tool holders
Feed and operating controls
Bore welding components, where applicable
Connecting cables and accessories
Storage or transport case, where applicable
Operating and maintenance documentation
Optional Accessories
Depending on model compatibility and the repair requirements, additional accessories may include:
Extension boring bars
Additional mounting components
Specialized cutting tools and tool holders
Facing or other application-specific machining attachments
Bore welding equipment or related accessories
Additional measuring or control components
Spare Parts and Technical Support
Before purchasing, confirm the technical support and maintenance arrangements available for the selected model.
Discuss the following points with JDA Machinery:
Availability of operating and maintenance documentation
Supply of replacement parts and compatible accessories
Installation guidance and operating assistance, where available
Warranty coverage and applicable service conditions
Maintenance and Equipment Care
Regular inspection and appropriate maintenance help keep portable machining equipment in suitable operating condition. Follow the maintenance instructions supplied for the specific model.
Recommended inspection areas include:
Boring bars and mounting components
Check for damage, deformation, wear and loose connections.
Cutting tools and holders
Inspect cutting edges and tool seating, and replace worn components as necessary.
Feed and rotation mechanisms
Check for abnormal movement, noise or operating resistance.
Electrical components
Inspect cables, connectors and controls where applicable.
Precision-fit surfaces
Clean the equipment after use and protect machined surfaces during storage and transport.
Bore welding components
Inspect the welding mechanism and related connections according to the applicable equipment instructions.
FAQ
As one of the most professional boring welding manufacturers and suppliers in China, our products have good reputation in the market. Please rest assured to buy cheap boring welding for sale here from our factory. Quality products and reasonable price are available.
