Sterling Spring

This whip antenna assembly displays not only our antenna and screw machine manufacturing capabilities but also our assembly or value-added portion of the business. The rod is formed from .100" 302 stainless steel through multiple different station setups on our CNC coilingbending equipment then are trimmed, deburred and ready for assembly. The antenna ball is composed of .250" 304 stainless steel which is formed on our screw machine with programmed memory to make setups quick, consistent and efficient. The antenna ball is then swaged to the rod to complete the assembly. A rare feature that Sterling provides is our pull testing capabilities that will verify strength of the assembly to ensure the ball cannot be easily removed from the rod. This part is subject to a 100 pound pull test, which is tested on our custom built (in-house) pull testing equipment that is calibrated annually by a certified outside source. The finished antenna assembly measures 11.32" in length and is good representative of the many antennas that our antenna department manufactures. At Sterling Spring we produce 15, 000 of these antenna assemblies annually and we deliver to a major communications manufacturer.

Sterling Spring, LLC is a prototype to high volume production supplier of wire forms of all shapes and sizes. Our shop has the capability to make unlimited designs specializing in holding tight tolerances on both length and angle dimensions. We are a customer-driven company that goes the extra mile to make the unique and special designs that other companies won't attempt. We have a multitude of manufacturing options to best suit your functionality and volume requirements. Our in-house fourslides are designed for high-speed and highly precise production with tooling specifically made by our toolmakers for your part. We have open-faced CNC wire formers that can run around the clock to meet both your production and quality needs. For prototyping and specialty wire forms, we have a complete secondary shop that turns samples and small lots around quickly and effectively. Sterling Spring's management team has a hands-on approach to working together with our customers to find the most cost-effective and efficient manufacturing method for all of your wire form needs. We make wire forms out of round, square, rectangular or flat wire and can be manufactured with a wide range of spring tempered and annealed materials, such as stainless steel, music wire, basic wire, tungsten, as well as exotic metals and specialty materials. All of the raw materials purchased by Sterling Spring are certified by our suppliers to the ASTM, AMS or DIN standards required on your print. We purchase RoHS compliant material and DFARS material can be made available upon request.

The dental clip highlighted here is manufactured using our precision fourslide and stamping capabilities. This product requires intricate tool and die work to not only provide the forming of the part but also features a die that stamps the customer's name, country of origin, and material type on every single part formed on our machine. The final bends are completed in our extremely versatile secondary department utilizing specialty tools specifically built for this job to maintain the tight gap and print tolerance requirements. This part is a composed of 17-7 PH Condition A (annealed) stainless steel, slit edged flat stock in accordance with AMS standard 5528 that requires outsourced heat treatment to attain Condition C (spring tempered) after forming and then sent out for electro polishing. Sterling Spring takes great pride in our approved supplier list by selecting high quality raw material suppliers as well as special heat treating and plating providers that meet our quality requirements.

Sterling Spring, LLC is dedicated to becoming the spring supplier of choice through our customer-focused approach to product quality, open communication, technical service and on-time delivery. Through Sterling's commitment to our employees and investment in the latest spring manufacturing technology, we have expanded our capabilities beyond the typical compression, extension and torsion spring product mix. We think outside of the box and get excited to work on unique designs that are outside of the industry standard. Compression springs lay at the foundation of Sterling Spring's history and with the introduction of CNC technology we have been able to reduce our setup times, improve our ability to meet tight tolerances and increase the versatility of spring shapes and sizes made directly off our machinery. We have the ability to make cylindrical, conical, barrel and magazine compression springs that can be manufactured with closed or open ends with our in-house grinding department prepared to meet all of your spring- end grinding needs. We are equipped to run wire sizes ranging from .003" to over a half an inch in diameter with outside diameter production capabilities that exceed five inches and have no boundaries on the length of your spring.

The compression spring highlighted in this portfolio is a product of our precision wire forming and coiling capabilities. This part features a very tight spring index with variable pitch which makes the diameter dimensions difficult to hold throughout the length of this 8.75" spring. The spring is made out of 0.058" music wire and is coiled on one of our CNC coilers. Tight print tolerances and the inside diameteroutside diameter specifications on the print demand careful quality control and attention. As such, Sterling Spring's skilled tool makers fabricated custom gauges to check dimensions for the initial and in-process inspections. The finished springs were then phosphate coated by one of our preferred suppliers and delivered to the customer in Wichita, Kansas. We provide 11, 000 of this precision spring to this customer annually. For more information, see the table below or contact us directly.

The complex double torsion spring shown here features multiple bends, angles, lengths and dimensions that is made complete off of one of our open-faced CNC wire formers. Our skilled operators incorporate the use of a special robot arm attachment that enhances our machinery's capability and allows our machine to handle the intricate bending required for this part. The use of positional probes allows the machine to check angle dimensions and will automatically shut the machine off if the probed angles are not attained which is a big aid in ensuring top notch quality. This part displays Sterling Spring's dedication to technology and drive to keep our customer's costs as low as possible. By making this part complete off of the machine, we are greatly reducing lead times and are eliminating labor costs that come with the need for secondary operations. The cost savings is huge as we ship over 150, 000 of these parts per year to our customer that specializes in the containment industry.