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Successful Partnership with Numachine
In contract manufacturing, micrometers, seconds, and stable processes matter. Every process variable affects quality, costs, and productivity—including the metalworking fluid. At Numachine Ltd., this very factor was specifically optimized in collaboration with Oemeta. The result: longer tool life, cleaner components, lower metalworking fluid consumption, and more sustainable production.
Founded in 2019, Numachine specializes in the CNC machining of complex components. Among other materials, the company manufactures components from cast iron, aluminum, stainless steel, structural steel, and plastics. Using state-of-the-art machining and measurement systems, Numachine supplies demanding industries such as the automotive sector, medical technology, and aerospace—fields in which repeatability, process reliability, and uncompromising quality are crucial.
The Start of Our Collaboration
About six months before the switch, Oemeta worked with Numachine to analyze the existing metalworking fluid processes. The standard metalworking fluid used up to that point was causing problems, particularly during thread tapping and thread milling in castings. Tool life was too short, and tool breakage led to scrap and additional costs.
In addition, residues were left on components, machines, and work surfaces. This resulted in coolant loss, additional cleaning efforts, and potential safety risks in production.
Our solution: ESTRAMET S 95
Following the analysis, Oemeta recommended the use of ESTRAMET S 95. This water-miscible metalworking fluid is based on ester oil and contains no fossil-based raw materials. As such, it supports both Numachine’s technical performance requirements and its sustainability goals. The analysis also revealed the potential for a roughly 20% increase in tool efficiency.
The solution offers advantages in three key areas: longer tool life, cleaner components, and more sustainable production. Thanks to its high lubricating performance, friction and heat generation at the cutting edge are reduced. At the same time, the low-residue formulation ensures that components emerge from the machine cleaner, eliminating the need for additional cleaning steps.
Our metalworking fluid in action on site
Prior to the full transition, ESTRAMET S 95 was tested for six months under real production conditions. Among other factors, tool life, foaming, mist formation, residues on components, and general cooling lubricant performance were monitored.
The results were measurable:
- Consumption and costs for tap and thread milling cutters decreased by nearly 40%.
- In a regular casting run with 42 threaded holes at 3 × D, the service life of the taps increased from about 60 to 90 components.
- Coolant consumption decreased from about one drum every two to three weeks to about one drum every six weeks.
- Components came out of the machine cleaner, eliminating the need for additional cleaning steps.
- Mist formation, evaporation, and the odor of coolant in the production area disappeared almost completely.
- The stable foaming behavior ensured a reliable coolant supply and greater process reliability.
ESTRAMET S 95 thus improved not only process reliability but also the work environment. At the same time, the switch supports Numachine in its preparations for the targeted ISO 14001 certification.
Phased Introduction in Manufacturing
Following the successful launch, the test was expanded to two additional machines. ESTRAMET S 95 was gradually added to the existing metalworking fluid. This allowed compatibility to be tested without having to completely empty the tanks and without causing unnecessary downtime or additional disposal costs.
After six months, Numachine began rolling out the product on all machines. Oemeta is supporting the transition through regular sampling, condition analyses, and on-site technical support.
Technical Support as Part of the Solution
In addition to the product, technical service is a key component of the partnership. Oemeta regularly monitors the metalworking fluid, documents the results, and supports Numachine in operating its equipment reliably and cost-effectively.
Significant savings are also evident in machine cleaning: Thanks to the use of ESTRAMET S 95, the machines are significantly cleaner at the scheduled cleaning times. As a result, cleaning effort and the associated costs have been reduced by about 50%.
Numachine Ltd.
Numachine Ltd. was founded in 2019 and specializes in the CNC machining of complex components. Among other things, the company manufactures parts from castings, aluminum, stainless steel, structural steel, and plastics.
Using state-of-the-art machining centers and measurement technology, Numachine serves customers in demanding industries such as the automotive, medical technology, and aerospace sectors. The company focuses on precise manufacturing, high repeatability, process reliability, and cost-effective component production.
For more information about Numachine, visit: numachine.co.uk
Numachine on Oemeta:
“We chose Oemeta because of their technical support. Ryan, a technical sales engineer at Oemeta, guided us through the entire process and kept us involved every step of the way.
If anyone is looking for a new coolant supplier, I would definitely recommend Oemeta.”
George Hawkins, Managing Director, Numachine Ltd.
Canada
