Cal-Disc Grinding Co

Paramount Machine is a leading precision machining company in Rancho Cucamonga, CA, with over 50 years of expertise in the field. Their highly-experienced craftsmen specialize in machining various materials for industries such as aerospace, defense, electronics, medical, and commercial, offering top-quality precision machining and assembly services. With a modern manufacturing environment equipped with advanced CNC machines, Paramount Machine is capable of handling materials ranging from aluminum and titanium to aircraft steels and high-temp alloys, ensuring exceptional quality, delivery, value, and flexibility for their clients.Generated from the website

Since 1969 Roncelli Plastics has been recognized as a world-class supplier of plastic and non-metallic machined parts. Many of the largest and most technologically advanced companies in the United States and across the globe entrust Roncelli Plastics with their plastic and non-metallic components. . Finished components are delivered companies such as Boeing, Raytheon, Honeywell, Northrop Grumman, Lockheed Martin, NASA, and hundreds of other companies. Roncelli Plastics has the capability and the capacity to manufacture components from the conceptual/Research and Development stage through prototyping and on to full production. It has two buildings totaling 37,000 square-feet. The company is located in Monrovia, Calif.

Established in 1960, Downey Grinding Company Inc. provides centerless grinding services with tight tolerances and finishes on parts in materials such as stainless, titanium and specialty alloys. Based in Downey, Calif., the grinding capabilities include spherical radii, full balls, grooves, flats and multiple diameter shafts. Additionally the company performs thread rolling and knurling and manufactures a range of Cincinnati #2 centerless grinder replacement parts, including work rests, dresser cylinders, kick-out units, camouts, thrufeed guides and gear pins. The equipment list includes 15 fully automated grinders and a 5,000 gallon centralized oil system to filter and cool oil for optimum quality and surface finish.