The Challenge
A manufacturer supplying aftermarket performance monitoring systems for the automotive sector approached Strategic Innovations Dundee Ltd with a recurring production bottleneck involving a small but highly precise sensor sleeve assembly.
Manufactured from 316 Stainless Steel, the component measured just 18 mm in diameter and 42 mm in overall length. Despite its compact size, the part incorporated multiple external diameters, precision grooves, threaded features, internal bores, and a laser-marked identification zone.
The client’s existing supply chain relied on conventional CNC turning followed by several secondary machining operations. This created long production queues, excessive component handling, and inconsistent lead times during periods of peak demand.
Critical tolerances on several diameters were restricted to ±0.01 mm, while internal surface finish requirements demanded a maximum Ra value of 0.8 μm to ensure consistent sensor fitment.
With annual demand forecast to exceed 25,000 units, the client required a more efficient manufacturing process capable of delivering repeatable quality while reducing production costs and shortening delivery schedules.
As specialists in CNC machining Scotland manufacturers depend upon, Strategic Innovations Dundee Ltd developed a process centred around high-volume automation and reduced handling.
The Engineered Solution
Following a detailed review of the engineering drawings and production volumes, the team identified CNC sliding head turning as the most effective manufacturing route.
The component’s relatively small diameter, tight tolerance requirements, and high-volume demand made it ideally suited to multi-axis sliding head technology.
Production commenced using 316 Stainless Steel bar stock fed directly through a sliding head machine equipped with live tooling capabilities.
Several key features were produced simultaneously during a single machining cycle:
- External profiling operations.
- Internal boring and drilling.
- Precision groove generation.
- Thread cutting.
- Cross-hole machining.
- Part-off operations.
By integrating multiple processes into one cycle, the need for secondary machining operations was virtually eliminated.
Toolpath optimisation focused on minimising non-cutting movements while maintaining dimensional stability. Particular attention was given to chip control due to the material’s tendency to produce long, stringy swarf during aggressive cutting operations.
The engineering team implemented:
- High-pressure coolant delivery.
- Balanced cutting loads across multiple stations.
- Reduced tool overhangs.
- Optimised feed rates for surface finish control.
In-process probing and routine offset adjustments ensured critical diameters remained consistently within specification throughout long production runs.
Following machining, components progressed to laser marking where batch information and customer identification codes were permanently applied.
The final stage involved lightweight sub-assembly engineering, with sealing rings and fastening hardware fitted prior to packaging. By consolidating machining and assembly under one roof, the client was able to eliminate additional subcontract suppliers from the process.
The Outcome & Operational Impact
The project delivered substantial gains in both productivity and manufacturing efficiency.
Key performance improvements included:
- 47% reduction in overall cycle time per component.
- 62% reduction in production handling operations.
- 35% improvement in lead time performance.
- Consistent dimensional accuracy within ±0.01 mm.
- Internal surface finish maintained at Ra 0.6–0.8 μm.
- Reduced supply chain complexity through integrated assembly services.
The adoption of CNC sliding head turning enabled Strategic Innovations Dundee Ltd to transform what had previously been a multi-stage production process into a streamlined manufacturing workflow.
For the customer, the result was lower production costs, improved scheduling reliability, and greater confidence in future volume scaling.
Today, Strategic Innovations continues to support manufacturers across automotive, energy, industrial, and commercial sectors with advanced precision turned parts, subcontract manufacturing UK, and precision engineering Dundee services. By combining modern machining technologies with practical engineering expertise, the company consistently helps clients overcome production bottlenecks while improving operational efficiency.
Call to Action
Have a complex engineering component or production bottleneck? Send your technical specifications and RFQ straight to the engineering team at Strategic Innovations Dundee Ltd (https://www.strategic-innovations.co.uk) for a comprehensive manufacturing evaluation.
