BOS-DS60 Portable Line Boring Machine

The standard configuration of the BOS-DS60 supports boring and welding operations from 65mm to 600mm diameter. Additional bearing support configurations extend overall application capability even further depending on machine setup and alignment requirements. The spherical support covers up to 270mm, the I-type support handles up to 620mm, and the cross-type support expands capability up to 780mm diameter applications. Custom machine configurations and extensions are also available for specialized industrial requirements.

The correct bearing support depends on the size and configuration of the bore being repaired. The spherical support system covering Ø55–270mm is ideal for standard excavator and backhoe pin bores commonly encountered in construction equipment maintenance. The I-type double-arm support handles larger bores between 170mm and 620mm and is frequently used for crushers, heavy excavators, and industrial equipment. For ultra-large bore applications in cranes, mining machinery, and specialized industrial systems, the cross-type support expands capability up to 780mm. BOS also offers ID mount self-aligning systems for internal bore mounting where traditional external supports cannot be used.

Yes, the BOS-DS60 is designed as a complete 5-function repair platform capable of both welding and boring operations within the same setup. The welding attachment mounts directly onto the same boring bar assembly, eliminating the need for repeated alignment or repositioning between repair stages. Operators simply input bore dimensions into the control system and select the required welding mode, including spiral, sector, jump, or bore welding. Once material buildup is completed, the machine can immediately switch to precision boring mode for final machining and finishing operations.

Traditional portable line boring machines often require separate dedicated tool holders for different bore sizes, increasing tooling costs and transportation requirements. The BOS-DS60 uses a patented modular tool holder system that can be assembled and configured for multiple bore ranges using one adaptable platform. This significantly reduces the amount of equipment technicians need to carry to remote job sites while improving setup flexibility. The modular holder includes a total height of 560mm with Ø14mm round knife edge compatibility and 16mm square knife notch positions for versatile cutting tool installation.

The BOS-DS60 operates on either 220V or 380V industrial power at both 50Hz and 60Hz frequency standards. The main drive system uses a powerful 3800W servo motor supported by an independent axial feed motor for stable and controlled machining performance. For remote field deployment, the machine is generator compatible, and a properly rated 5–6 kVA generator is typically sufficient for standard operation. Customers can specify voltage requirements during ordering to ensure compatibility with local power infrastructure and regional electrical standards.

The BOS-DS60 is engineered to achieve highly precise machining tolerances suitable for heavy industrial repair operations. The machine maintains ellipticity tolerance of ±0.02mm and taper angle tolerance of ±0.02 while delivering surface roughness values of Ra 3.2(25) μm. Stepless speed regulation combined with servo motor positioning control gives operators exceptional control over feed rate and cutting conditions. This level of precision allows restoration of worn bores to near-factory specifications across machining lengths up to 1000mm.

The standard boring bar supplied with the BOS-DS60 measures Ø60mm × 2200mm and is suitable for most heavy equipment repair operations. For larger or specialized applications, custom boring bar lengths can be manufactured using the required workpiece dimensions and machine allowance calculations. The axial feed screw is supplied as standard in 600mm length and can be customized up to 1000mm depending on operational requirements. Both forward and reverse machining operations are supported for increased versatility during repair work.

The BOS-DS60 is widely used across heavy construction, mining, infrastructure, marine, industrial, and energy sectors. Common applications include large excavators, crushers, rope shovels, cranes, thermal power plant machinery, steel plant equipment, road construction machinery, and industrial presses. Any industry operating heavy equipment with cylindrical bore wear can benefit from portable on-site repair using the DS60. Its large machining range and multiple support systems make it adaptable across a broad variety of industrial repair scenarios.

Yes, PR Crane & Earthmovers provides complete operator training and after-sales technical support for every BOS-DS60 installation. Customers receive operational guidance, setup assistance, and troubleshooting support directly from the BOS technical team. Spare parts and service assistance are available through the Udaipur head office and Bangalore branch network, ensuring fast support for domestic and international customers. With more than 1000 customers served globally, BOS continues to provide long-term service support for field repair professionals.