The BOS-DS50 Intelligent Line Boring Machine is engineered for high precision on-site bore repair and automated welding operations across construction, mining, and industrial equipment. Built by BOS under PR Crane & Earthmovers, the machine allows operators to restore worn pin bores directly on-site without dismantling and transporting heavy equipment to a workshop.
With integrated boring, welding, flange facing, sector welding, and jump welding capabilities, the BOS-DS50 dramatically reduces machine downtime while improving repair quality and consistency. Contractors, OEM dealers, fleet owners, and mining operators rely on the system to achieve precision repairs while reducing operational expenses by nearly 40–60% compared to conventional workshop repair methods.
Bore, weld, and restore heavy equipment directly in the field without transport delays.
The BOS-DS50 combines multiple repair processes into a single intelligent platform designed specifically for demanding field conditions. By integrating boring, welding, and finishing functions into one compact system, operators can complete full bore restoration jobs faster, with better alignment accuracy and significantly reduced setup time.
The BOS-DS50 operates in both automatic and manual modes for precise bore restoration across multiple equipment categories. Hole diameter is fully customizable, making the system ideal for precision repair without removing machinery from the worksite or production area.
Operators simply enter the hole diameter on the control system and select automatic welding mode. The machine then synchronizes rotational movement and axial feed automatically to deliver uniform weld deposition and highly consistent weld quality.
Sector welding is designed specifically for repairing oval, elliptical, or severely worn bores. The programmable welding sequence evenly fills damaged areas and restores correct geometry without excessive manual correction or repeated welding cycles.
The intelligent jump welding system automatically skips over grease grooves, keyways, and obstructions during welding operations. A controlled 15mm clearance ensures weld material is deposited only where required for clean and efficient restoration.
The flange facing attachment enables rough machining of excavator and equipment bore surfaces directly on-site. The tool processes diameters from 120mm to 300mm while automatically following spindle speed for stable and accurate machining.
Both machines are engineered for portable on-site line boring and welding operations, but they are designed for different equipment classes and workload requirements. The DS50 is ideal for standard excavator and backhoe repair operations, while the DS60 is purpose-built for large excavators, crushers, cranes, and mining machinery requiring higher torque and larger bore capability.
| Feature | BOS-DS50 | BOS-DS60 |
|---|---|---|
| Boring Range | 55–160mm | 65–600mm |
| Boring Bar | Ø50mm | Ø60mm |
| Motor Power | 3100W | 3800W |
| Output Torque | 130 N.m | 220 N.m |
| Spindle Speed | 50–255 RPM | 30–133 RPM |
| Bar Length | 1600mm | 2200mm |
| Best For | Standard excavators, backhoe loaders | Large excavators, crushers, cranes, mining |
| Welding Range | 45–160mm | 65–600mm |
| Flange Facing | 120–300mm | 160–600mm |
Precision specifications are critical when restoring heavy equipment pin bores and structural components in the field. The BOS-DS50 is engineered with industrial-grade servo systems, intelligent feed control, and modular tooling to deliver workshop-level accuracy directly at the job site.
Every component is optimized for durability, alignment stability, and high repeatability in demanding environments such as mining operations, infrastructure projects, quarry sites, and industrial plants.
Every BOS-DS50 system is manufactured using industrial-grade components designed for reliability, portability, and precision in harsh field conditions. The modular layout allows operators to assemble, align, and operate the machine efficiently across multiple bore sizes and equipment categories.
Each component is optimized to work together as a complete intelligent repair system, delivering stable performance for boring, welding, and finishing applications.
The BOS-DS50 is engineered for deployment across construction sites, mining operations, crusher plants, industrial maintenance facilities, marine sectors, and infrastructure projects. Its portable design and intelligent 5-function system allow technicians to restore critical bores directly where the equipment operates, minimizing downtime and maximizing productivity.
Pin bores on backhoe loaders wear rapidly due to continuous digging cycles and heavy operational loads. The BOS-DS50 restores boom, arm, and bucket pin bores directly on-site while maintaining alignment and factory tolerance accuracy.
From mini excavators to large mining-class equipment, the BOS-DS50 handles a broad range of bore diameters efficiently. The machine eliminates transport cost, workshop dependency, crane handling time, and unnecessary equipment downtime.
Crusher pivot bores experience extreme impact loads and accelerated wear during production cycles. The integrated welding and boring functions allow technicians to weld, machine, and finish bores in one setup for faster crusher restoration.
Any machinery using cylindrical bores can benefit from the BOS-DS50 repair system, including cranes, road rollers, steel plant equipment, marine machinery, and industrial processing systems operating under heavy load conditions.
Leading OEM dealers, construction giants, mining companies, and industrial enterprises rely on BOS machines for dependable on-site bore repair solutions.
Contact our technical and sales team for machine quotations, live demonstrations, application discussions, or bore repair consultation. Whether you operate a single workshop or a large mining fleet, BOS can help you identify the right solution for your repair requirements.
352, B-Block, Transport Nagar, Balicha,
Udaipur, Rajasthan – 313002
No.2/4/2, Godown 4th Block, 2nd Main,
Goraguntepalya, Yeshwanthpura,
Bangalore, Karnataka – 560022
