Facing portable line boring machine BB8100

Overview
The CLIMAX BB8100 portable line boring machine is a versatile model for precision line boring in demanding field and shop operations. Designed for fast, flexible setup, it provides a high power-to-weight ratio and high-speed operation to improve productivity. Its compact, modular construction enables quick mobilization, reduced setup time, and consistent machining tolerances across a wide range of repair and manufacturing tasks.

Capability and application
Engineered for large-scale work, the BB8100 bores diameters from 14.5 to 85.6 inches (368.3–2174.2 mm). By combining substantial boring capability with an efficient footprint, the machine minimizes downtime and maximizes machining performance—suitable for heavy equipment repair, construction, mining, and industrial maintenance.

Key features

• Portable line boring solution for field and shop use with modular components for rapid setup and mobilization.
• Hydraulic motor option; example motor displacement 11.3 in³ (185.3 cm³) producing ~4783 ft•lb (6484.9 N•m) torque at the bar at 15.1 rpm.
• Bores from 14.5 – 85.6 in (368.3 – 2174.2 mm); facing capability from 14 – 97.7 in (355.6 – 2481.6 mm) with facing attachments.
• ID and end-mount bearings use spherical taper-lock roller bearings; end mount adjustable by ±0.25 in (6.35 mm) to center the bar.
• Optional dual-action boring/facing arms increase facing range and allow boring and facing without switching equipment; full-length square ways on arms for rapid positioning.
• Net-fit tool carrier with split frame for simplified installation; carrier clamps to the bar for facing and can be adjusted for net-fit boring; adjustable/removable half nut for flexibility.
• Support for leading & trailing boring head configuration (two boring heads can be used simultaneously).
• Versatile tool holder block accepts industry-standard tooling with nominal 1 in (25.4 mm) square shank; tool post on boring/facing arm can be rotated for flexible setups including some cantilevered configurations.
• Modular tool carrier channels forces to the boring bar via adjustable guide shoes for increased rigidity.
• Hard-chromed bars straight to within 0.001 in per foot (0.0254 per 304.8 mm); optional gun-drilled bars with optical targets available.
• Backlash adjustment nut for in-field adjustment to eliminate backlash and extend service life.

Specifications (table)
SPECIFICATIONS | INCH | METRIC
Bar diameter | 8 in | 203.2 mm
Boring diameter | 14.5 – 85.6 in | 368.3 – 2174.2 mm
Max. stroke | length of bar | length of bar
Torque at bar | 3350 – 6068 ft•lb | 4542 – 8227 N•m
Power option | Hydraulic | Hydraulic

Technical notes and features

• Net-fit tool carrier with split-frame design for simplified installation and clamp-style attachment to the bar.
• Adjustable/removable half nut to facilitate multi-bore machining and tool carrier removal.
• Full-length square ways on boring/facing arms for quick tool positioning and secure clamping to the carrier.
• Tool holder accepts 1 in (25.4 mm) square-shank tooling; rotating tool post allows varied setups including limited cantilever configurations.
• Optional accessories: dual-action boring/facing arms, facing attachments, axial feed units, indicators and optical targets for gun-drilled bars.

Technical specifications

• Model: BB8100
• Brand: CLIMAX
• Bar diameter: 8 in (203.2 mm)
• Boring diameter: 14.5 – 85.6 in (368.3 – 2174.2 mm)
• Facing range (with attachments): 14 – 97.7 in (355.6 – 2481.6 mm)
• Torque at bar: 3350 – 6068 ft•lb (4542 – 8227 N•m)
• Power option: Hydraulic (hydraulic motor example: 11.3 in³ / 185.3 cm³ producing approx. 4783 ft•lb / 6484.9 N•m at 15.1 rpm)
• Tooling: accepts 1 in (25.4 mm) nominal square shank tooling; supports leading & trailing head configurations
• Construction: hard-chromed bars; optional gun-drilled bars with optical targets; adjustable/removable half nut; backlash adjustment nut
• Typical applications: heavy equipment repair, construction, mining, industrial maintenance