Koike Aronson Beetle II
Key Specifications
Machine Type
Cutting Processes
Drive System
Travel Speed Range
Pipe Diameter Range
Torch Adjustment
Overview
The Koike Aronson Beetle II is a compact, self-propelled pipe and plate cutting machine designed for pipe cutting and beveling applications in field construction, pipeline fabrication, and maintenance environments. Built as a successor to the original Beetle, the Beetle II wraps around a pipe or rides along a flat plate on magnetic wheels, maintaining a consistent cutting speed and path without a separate track. This self-guided design makes the Beetle II particularly effective for pipe work — the machine indexes itself around the pipe circumference automatically, producing square or beveled cuts perpendicular to the pipe axis with minimal operator intervention.
The Beetle II is engineered for rapid deployment in demanding field conditions. Its magnetic drive wheels adhere firmly to carbon steel pipe and plate surfaces, providing reliable traction even on vertical surfaces and in confined spaces. The drive system delivers smooth, consistent travel speed that is critical for quality oxy-fuel and plasma cuts. The machine's compact and rugged construction is designed to survive the rough handling of pipeline and petrochemical construction jobsites, where equipment is frequently transported, stored in field conditions, and operated by crews who prioritize speed and reliability over sophisticated controls.
Torch compatibility on the Beetle II follows Koike Aronson's universal mount philosophy, accommodating both oxy-fuel and plasma cutting torches. For pipe work, oxy-fuel is commonly used on thick-wall carbon steel pipe where penetration and cut face quality favor the oxy-fuel process. Plasma is preferred for thinner-wall pipe, stainless steel pipe, and when faster cycling between cuts is needed. The torch mount includes angular adjustment for bevel cutting, enabling weld prep cuts — a critical capability for pipeline construction where all girth welds require beveled pipe ends.
Sectors that rely heavily on the Beetle II include oil and gas pipeline construction and maintenance, petrochemical plant construction, shipbuilding pipe shops, power generation plant construction, and heavy industrial maintenance operations. Koike Aronson's reputation for durable, reliable portable cutting equipment — built on decades of supplying the global shipbuilding and energy construction industries — is the primary reason the Beetle family has maintained its market position against generic competitors.
Full Specifications
| Parameter | Value |
|---|---|
| Machine Type | Self-propelled magnetic pipe/plate cutting machine |
| Cutting Processes | Oxy-fuel and plasma (universal torch mount) |
| Drive System | Magnetic wheel drive, self-propelled |
| Travel Speed Range | Approx. 5 – 100 cm/min (stepless) |
| Pipe Diameter Range | Approx. 100 mm (4 in) and larger (no upper limit for plate) |
| Torch Adjustment | Height and angle adjustment for bevel cutting |
| Weight | Approx. 6–8 kg |
| Power Supply | 100–240V AC, 50/60 Hz |
| Cutting Capacity (Oxy-Fuel) | Up to 100 mm thick carbon steel |
| Operating Surface | Carbon steel pipe and plate (magnetic adhesion) |
| Construction | Heavy-duty cast aluminum and steel housing |
Specifications sourced from koike.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Self-guiding magnetic wheel drive eliminates the need for a separate track — machine wraps around pipe or travels on plate automatically
- Pipe cutting and beveling capability makes it ideal for pipeline construction where weld prep is a primary operation
- Compact and rugged design survives field construction environments with minimal maintenance
- Dual oxy-fuel and plasma process compatibility from a single machine with universal torch mount
- No upper limit on pipe diameter or plate size — the machine scales to any workpiece the magnetic wheels can grip
Limitations
- Limited to ferromagnetic (carbon steel) workpieces — will not adhere to stainless steel, aluminum, or non-metallic surfaces without special fixturing
- Not a CNC system; complex cutting profiles beyond straight cuts and bevels require a different approach
- Cut squareness and bevel angle consistency depend on proper machine alignment and surface condition of the workpiece
Best For
Frequently Asked Questions
01
The Beetle II is designed for pipe diameters of approximately 100 mm (4 inches) and larger. There is effectively no upper diameter limit — the machine rides on the pipe surface via magnetic wheels and can accommodate very large-diameter pipe used in pipeline and process plant construction.
02
Yes. The magnetic wheel drive provides sufficient adhesion for cutting on vertical pipe and in overhead positions, which is essential for in-situ pipeline repair and petrochemical maintenance work where pipe cannot always be positioned horizontally.
03
The magnetic drive wheels require a ferromagnetic (carbon steel) surface for adhesion. Stainless steel pipe (austenitic grades) is generally non-magnetic, which will prevent adhesion. Plasma cutting of stainless pipe with the Beetle II requires the pipe to have sufficient carbon steel content or the use of supplemental clamping.
04
The Beetle II's torch mount adjusts to produce bevel angles typically in the range of 0° (square cut) to 45°, covering standard weld preparation geometries including V-groove and J-groove bevel profiles used in pipeline girth weld preparation.
05
The Pug 100 is a track-mounted carriage that requires a separate flexible track for guidance and is optimized for straight cuts on flat plate. The Beetle II uses magnetic self-propulsion without a track and is specifically designed for pipe cutting and circumferential cuts, making it the preferred tool for pipeline and piping work.
Videos
Koike Aronson Ransome
Koike Aronson Ransome
Koike Aronson Ransome
Koike Aronson Ransome
Koike Aronson Ransome
Community Discussions
Pricing and buying discussion — Koike Aronson - Page 2 - CNCzone
Pricing and buying discussion — Koike Aronson - cnczone.com
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Troubleshooting and problem-solving — Need Help! KOIKE ARONSON - cnczone.com
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Options and configuration advice — Tool box recommendations? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.




