BB3100 BOREMAX™ Modular Line Boring & Welding Machine

The BB3100 BOREMAX™ is a compact, high-performance line boring and welding system built for precision in tight spaces. Its through-bar design allows flexible placement of the drive and feed unit along the bar, enabling it to handle jobs where other machines cannot fit. Lightweight, portable, and durable, it is ideal for both shop and field applications.

Designed for versatility, the BB3100 supports line boring, drilling, facing, threading, valve repair, and more. With a wide range of accessories and electric, hydraulic, and pneumatic power options, it delivers fast setup, easy operation, and reliable accuracy for demanding on-site machining.

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Specifications

MODEL BB3100 BOREMAX™
Part number 107889
Drive types 3.1 kW Servo Electric 220 V 50/60Hz single phase
Mounting option Direct bearing mount
Set up cones 2 included with additional fins to cover the full range
Rotational Drive Unit 10:1 gear ratio reduction

MACHINING

Boring diameter range 0.87 – 15.75″ / 22 – 400 mm
Bar diameters Standard 2.25″ / 57.2 mm; with small bore kit: 0.75 & 1.25″ / 19 & 31.8 mm
Bar stroke, max 12″ / 304.8 mm
Feed Type Variable set by touch screen
Feed rate Adjustable 0 – 0.018 in/rev (0–0.457 mm/rev) stepper electric
Bar lengths 1.2, 1.8, & 2.4 m / 47.2, 70.9, & 94.5″ (additional lengths available)

WELDING

Welding Process Step, spiral, and programmed skip
Axial Feed Per Revolution Variable set by touch screen
Axial Travel 12″ / 304.8 mm
Wire diameter range 0.03″ / 0.8 mm
Amperage rating 120 AMPs
Torch extension arm 3 direct threads on extensions included
Standard torches 1.3 – 5″ / 33.02 – 127 mm
Torch range 1.3 – 15.75″ / 33 – 400 mm

MEASURMENTS

Shipping weight
Machine (does not include bar) 600 lbs / 272 kg
Boring bar (Includes metal shipping container) 1.48 lbs/in. / 0.264 kg/cm
Shipping dimensions
Machine W, D, H 48.3 x 40.2 x 20.5″ / 1226 x 1021 x520 mm
Bar 72″ / 1828.8 mm W, D, H 74.5 x 6.5 x 7″ / 1892 x 165 x 178 mm

Product Advantages

Performance & Precision

  • Closed-loop servo control: Maintains consistent RPM for stable tool speeds and improved machining accuracy
  • Automated speed calculation: Input bore size and desired surface speed, and the system calculates optimal RPM to eliminate guesswork and ensure accurate setup
  • High-speed performance: Up to 290 RPM bar speed for enhanced carbide cutting and faster material removal
  • Precision feed control: Ball screw positioning delivers accurate, repeatable machining performance
  • Motor load indicator: Real-time load feedback allows operators to maximize performance or prevent overload

Control, Setup & Flexibility

  • Direct axial feed input: Set feed rate (in/rev or mm/rev) and make on-the-fly adjustments at the push of a button
  • Intuitive touchscreen controls: Visual pictograms guide the operator for easier, more user-friendly operation
  • Precision control pendant: Compact hand-held pendant provides real-time variable speed adjustment, directional control, and simple start/stop operation
  • Modular bar system: Available in 1.2 m, 1.8 m, and 2.4 m lengths to adapt to a wide range of bore sizes and applications
  • Field-ready design: Rugged yet simple construction optimized for durability, quick setup, and ease of use in demanding environments
  • Complete system delivery: Supplied in a transport-friendly container with pallet footprint for easy handling and deployment

Welding Capability

  • Multi-mode weld control: Supports step, spiral, and programmed skip functions for precise weld deposition
  • Adjustable axial feed: Touchscreen-controlled feed rates ensure consistent, high-quality weld builds
  • Stable wire performance: Designed for 0.03” welding wire to ensure smooth feed and consistent arc quality
  • Extended travel capability: 12 inches of axial travel allows efficient repair of longer bore sections
  • Extended reach capability: Includes three direct thread-on torch extensions with built-in liners for easy installation in hard-to-access bores
  • Long reach flexibility: Provides up to 40 inches of unsupported reach for expanded application range
  • Wide bore coverage: Handles 1.3”–5” with the standard torch and up to 15.75” with extended configurations

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BB3100 BOREMAX™ Modular Line Boring & Welding Machine

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Standard Torch Range 0.88 – 12" / (22.4 – 304.8 mm
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Bar Dia. 2.25" / 57.2 mm
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