Business Details
50+ Years
experience
Your Trusted Partner for Precision CNC Machining Solutions
C & L Supreme is a privately owned contract manufacturer with over 50 years of experience in precision CNC machining. Founded in 1957 as Supreme Manufacturing Company, we merged with C&L Screw in 1972 and transitioned to advanced CNC capabilities in 1983. Our leadership team combines decades of industry expertise, with current owners Mike Sronkoski and Don Coleman continuing our tradition of honesty, trust, and quality.We specialize in multi-axis vertical/horizontal milling, Swiss turning, and electro-mechanical assembly, serving diverse industries like aerospace and fluid power. Our ISO 9001:2015 certification underscores our commitment to lean manufacturing principles and customer-specific solutions.
Services
Turning
Vertical Machining
Horizontal Machining
High Speed Rotary Indexing
Assembly
Details
- Year established: 1957
Highlights and features
- We offer 50+ years of specialized CNC machining expertise.
- Our ISO 9001:2015 certification ensures quality manufacturing standards.
- We provide tailored machining technology solutions for complex components.
- Our lean manufacturing processes reduce costs and improve efficiency.
- We serve diverse industries with specialized precision requirements.
Associations and certifications
- ISO 9001:2015
Services
CNC Swiss Turning
Our CNC Swiss turning delivers high-speed, accurate machining for complex parts. Using live tooling and sub-spindles, we eliminate secondary operations while maintaining tight tolerances. This technology reduces cycle times by 40% and supports one-setup production for diameters up to 3 inches, including through-spindle machining of specialized components.
Vertical Machining
Our vertical machining centers feature palletized systems that increase throughput by 30%. With 15x30 capacity and automated work-holding, we achieve repeatable precision for complex geometries. This technology optimizes production efficiency while maintaining 0.0002-inch tolerances across multiple part batches.
Horizontal Machining
Dual-pallet horizontal machining centers enable simultaneous loading/unloading operations. Our 16-cube capacity systems maintain 0.0001-inch accuracy for complex components. Precision work-holding techniques ensure consistent quality across high-volume production runs of intricate parts.
Electro-Mechanical Assembly
We provide complete electro-mechanical assembly services with inventory management solutions. Our bench testing capabilities and Kanban systems reduce supply chain costs by 25%. This service consolidates manufacturing and assembly under one quality-controlled process for complex customer specifications.
OD Rubber Grinding
Proprietary OD grinding technology handles rubber molded shafts up to 4 inches in diameter. Our precision contouring maintains 0.001-inch tolerances for specialized industrial applications. This process supports both straight and plunge grinding operations for custom rubber component requirements.
People
Mike Sronkoski
Co-Owner
With over 30 years in manufacturing, Mike Sronkoski brings deep operational expertise to C & L Supreme. His leadership focuses on maintaining quality standards while expanding CNC capabilities to meet evolving industry demands.
Don Coleman
Co-Owner
Don Coleman contributes 30+ years of metal industry experience to C & L Supreme. His technical background ensures continued innovation in precision machining while upholding the company's core values established in 1957.
Questions
What industries does C&L Supreme serve?
We serve aerospace, fluid power, professional audio, material handling, and other specialized industries requiring precision CNC machining solutions.
Are your manufacturing processes ISO certified?
Yes, our facility maintains ISO 9001:2015 certification for quality management systems and precision manufacturing processes.
What materials can you machine?
We work with most ferrous and non-ferrous metals, plastics, and specialized rubber components for diverse application requirements.
Do you offer prototyping services?
Yes, we provide prototype samples upon request to validate designs before full production runs for customer-specific components.
