SOLO: Spotfacing & Counterboring
Swiss Precision Since 1961
SOLO: The Ultimate Solution for Front & Back Spotfacing and Counterboring
Built for high-volume automation — minimizing setup changes and reducing downtime.
The HEULE SOLO tool delivers exceptional efficiency and performance for automated front and back spotfacing and counterboring. Designed for precision CNC machining, SOLO eliminates manual rotation of the workpiece, ensuring consistent, burr-free results and faster cycle times. Built for demanding production environments, it combines Swiss engineering, durability, and flexibility in one streamlined system.
Key Features & Benefits
- Powerful Performance: Handles front and back counterbores automatically in one operation.
- Superior Efficiency: Centrifugal, spring-loaded blade actuation ensures smooth, repeatable operation and reduced downtime.
- Optimal Compatibility: Works seamlessly with CNC, transfer, dial, and multi-spindle machines.
- Maintenance-Free Operation: Sealed head design prevents coolant contamination and extends tool life.
- Innovative Blade System: Pin-driven cutting blade resists jamming and allows fast, easy blade changes.
- Cost-Effective: Exceptional price-to-performance ratio for high-volume manufacturing.
- Customizable Design: Adaptable to your application, with options for indexable countersinks and form countersinks.
Industry Applications
Trusted across the aerospace, automotive, energy, and heavy equipment/large parts industries, where precision, durability, and cycle-time efficiency are critical.
Transform Your Machining Operations
With the SOLO Tooling System, you can seamlessly integrate automation into your production line. Customize your SOLO tool to meet the specific needs of your machining process—making it a versatile, high-performance asset in any manufacturing environment.
View Technical Information for SOLO
How Does the SOLO Tool System Operate?
The HEULE SOLO tool series includes three dynamic models — SOLO 1900, SOLO 2, and SOLO-L — each engineered for precise, automated front- and back-spotfacing or counterboring. Every model offers unique activation methods and performance capabilities to match a wide range of machining applications.
SOLO 1900: Precision Through Innovation
- Mechanism: Operates with two centrifugal weights housed within a sealed head. When spindle speed exceeds 1900 RPM, the weights expand outward to engage a gearwheel that extends the cutting blade.
- Operation: Once spindle activity ceases, a built-in pull-back spring retracts the weights and blade smoothly into the housing, ensuring safe and clean withdrawal.
- Capability: Handles counterbores up to 2× the bore diameter – 1 mm, suitable for through-holes up to 30 mm in diameter.
SOLO 2: Advanced and Versatile
- Mechanism: Inversely designed compared to the SOLO 1900 — activates at 2000 RPM or higher for blade retraction, with weights returning to center below 1500 RPM to lock the blade in place.
- Enhancements: For larger bore applications (≈ 22 mm and above), the optional SOLO S2 model provides an extended head for deeper or more complex machining tasks.
SOLO-L: Large Back Counterbores
- Mechanism: Features a simplified yet robust design using a controlled blade housing for consistent activation. Ideal for heavy-duty spotfacing and counterboring applications.
- Operation: Produces counterbores up to 1.95× the bore diameter, handling bores from 25 mm to 45 mm in diameter. Emphasizes reliability, simplicity, and repeatable precision.
- Capability: Fully customizable to meet customer-specific requirements, especially where larger bore sizes are needed.
Optimized Machining Solutions
The SOLO-L, SOLO 1900, and SOLO 2 expand your machining capabilities with automated precision and reliability across diverse industrial applications. For detailed specifications or assistance in selecting the right model, please contact your local HEULE representative.
View more catalogs/brochures, videos, and technical information for SOLO
How Do I Order SOLO?
Each SOLO tool is built from two key components:
- Standard Tool Head with Integral Shank – The base element for all applications with bore diameters ranging from 8 to 30 mm. Designed for maximum stability and repeatable performance.
- Custom Components – Housing pilots, control mechanisms, and cutting blades are optimized to your specific back-bore requirements, ensuring a perfect fit for your machining setup.
To get started, simply complete the SOLO Application Data Sheet with your project details. Our engineering team will review your specifications and provide approval prints within one week of order.
SOLO Case Study
Reducing Labor Applying Spotfaces to a Nickel Chain Wheel Drum
"By going with the HEULE SOLO Back counterbore tool, our end user documented a $13,249.55 per machine yearly cost savings. With 5 machines, this equals $66,247.75 annual cost savings, which is on top of the 181.33 hours per year of time savings."
Need help selecting a tool? Visit our online Tool Selector and go to the Locate Agent page on our website to find your local technical sales representative. For more assistance, contact us at info@heuletool.com or 513-860-9900 and we'll be happy to point you in the right direction.
