UBACK · USPOT · CNC Application Case Study

Spot-Facing & Counterboring of Aluminum Structural Supports.

Replace inconsistent conventional tools with one UBACK™ tool-holder and a USPOT insert. On cast aluminum automotive structural supports with 12% silicon, a Ø25 mm spot-face with an interrupted cut was machined through a Ø13 mm pilot hole at 2,000 RPM and 80 mm/min, delivering precise counterbores, smoother finishes, faster cycles and longer tool life.

Automotive structural supportsCast aluminum · 12% SiInterrupted cut

See the result

Spot-facing and counterboring of an aluminum structural support with NOGA USPOT — Application from the reported case.

Spot-face: Ø25 mm
Spindle speed: 2,000 RPM
Table feed: 80 mm/min
Cutting speed: 160 m/min

01 / The application

Where conventional tools fell short.

The challenge

The customer faced limitations with traditional counterboring and spot-facing tools:

Inconsistent surface finish in Al-Si casting material
Tool wear leading to frequent replacements
Inefficient cycle times, reducing overall productivity

Application details

Industry: Automotive – structural supports
Material: Aluminum casting, Alu Ac65, 12% Si
Machine: Mazak Variaxis i-600
Adaptation: SK40 (DIN 69871)
Pilot hole: Ø13 mm (0.512")
Spot-face: Ø25 mm (0.984"), interrupted cut

Aluminum structural support part detail with spot-faced hole — Part detail from the application.

02 / Tool & parameters

The tool behind
the result.

UBACK tool-holder

UX3130

UX-d130-C-C16-H80-L133

Pilot hole: Ø13 mm
Adaptation: SK40

USPOT insert

US3007

US-d130-D250-C-R04-PL-NCT

Spot-face: Ø25 mm
Pilot hole: Ø13 mm

Explore USPOT

Recorded machining parameters
Workpiece material	Aluminum casting, Alu Ac65, 12% Si
Pilot hole diameter	Ø13 mm (0.512")
Spot-face diameter	Ø25 mm (0.984"), interrupted cut
Machine	Mazak Variaxis i-600
Adaptation	SK40 (DIN 69871)
Spindle speed	2,000 RPM
Table feed	80 mm/min (3.15 in/min)
Cutting speed	160 m/min (525 sfm)
Feed per tooth	0.04 mm (0.002")
Coolant	Emulsion

These values describe this application. Confirm the setup for your own parts with NOGA MT.

Watch USPOT in action

VIDEO

USPOT by NOGA MT: high-accuracy spot-facing with hydraulic control.

03 / Results

The customer's preferred solution.

Reported by the customer

The UBACK with a USPOT insert delivered precise counterbores, smoother finishes, faster cycles and longer tool life in aluminum casting.

Precise counterbores
Smoother surface finish
Faster cycle times
Longer tool life
Higher process stability and efficiency

The customer reported higher process stability and efficiency, making USPOT their preferred solution.