Since its inception in 1965, Koro Industries has manufactured precision gears and other components for the aerospace industry. The descriptions below are highlights of some of the exciting projects in which we are and have been involved:

Photo Credit: NASA


In 1973, Koro was asked to manufacture replacement parts for NASA’s Skylab mission just a few weeks before the scheduled launch date. This replacement emergency was due to tooth breakage occurring on the original guidance system gears during testing. Initial material selection and the excessive vibration in the module proved to be problematic in the field. A solution for NASA was realized within the two weeks allotted with Koro’s completion of the replacement gears. Not only was production completed on time but the gears, when inspected, were found to be right in the middle of the tolerance on each critical gear feature. Skylab became the first U.S. space station and served as a scientific home base for research in space. It helped NASA study how astronauts could work in space and also to determine what problems humans would face in that challenging environment. Skylab was in orbit around the earth from 1973 to 1979 and hosted four different astronaut crews during its lifetime.

Photo Credit: NASA
Photo Credit: NASA

The Hubble Telescope

In 1993, Koro had the opportunity to produce gears for the famous “fix” of the Hubble Space Telescope. As launched, the telescope had a problem which caused all the images it sent back to earth to be blurry. (See before and after galaxy photo examples below.) In order to save the project, NASA designed and built an instrument, approximately the size of a telephone booth (remember those?) to correct a defect in Hubble’s main lens. Koro produced gears that helped the instrument refocus the light reflected off of the principal lens through a series of refractions. Once the instrument was installed by space shuttle Endeavor astronauts, the telescope started sending beautiful, clear images back to earth, the focus problem corrected. The magnificent images sent to us by Hubble have filled us all with awe as we contemplate the astounding expanse of the universe. The Hubble Telescope has provided invaluable scientific data to research for over 25 years and continues its mission today.

Photo Credit: NASA
Photo Credit: NASA
Photo Credit: NASA

“This comparison image of the core of the galaxy M100 shows the dramatic improvement in the Hubble’s view of the universe after the first servicing mission in December 1993. The original view, taken a few days before the servicing mission, is on the left.”
– Caption from

Mars Rover Curiosity

In November of 2011, NASA launched a small rover into space, direction, the planet Mars. Over the next 9 months, Curiosity travelled 354 million miles to the red planet where it began an initial two Martian year program of scientific research. Curiosity has 17 cameras and uses Koro manufactured gears to help it focus 12 of those cameras. Still in operation, Curiosity continues to send photographs and scientific data back to earth. Functioning as its own laboratory, Curiosity conducts experiments to study the chemical composition of martian soil and to study the environment, looking for evidence that Mars has the necessary building blocks that could have, at one time, supported life. See NASA’s website for daily Curiosity updates.

Photo Credit: NASA

Space Vehicle Separation System

Koro manufactures gears for an established product that deploys satellites into space without the use of pyrotechnics. This technology may be demonstrated to prospective customers safely and in a less restrictive environment than outer space. To our great delight, our customer came to the Koro Industries facility in order to demonstrate the product to our employees. “Counting T minus 10 seconds, 9, 8, 7,…”. We thoroughly enjoyed the opportunity to see the space vehicle separation system in action and to learn more about the growing satellite industry.

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Koro Industries recently received the highest possible ratings in all indexes from one of their long-time aviation customers.  With a delivery index of 100%, a quality index of 100% and an overall quality index of 100%, Koro Industries is considered an "Outstanding" supplier by this leading aviation instrumentation manufacturer. Ratings provided by the "Supplier Quarterly Performance Rating" report for the period 01/02/2019 thru 03/29/2019.
Performance Rating from the Director of Quality Leading Aviation Instrumentation Manufacturer
"Steve will work with me on small jobs or big ones. He is willing to spend the time to get it right. With Koro, you know you're not going to leave dissatisfied. If the problem can be solved, they will solve it. Everyone there is very conscientious about quality. Another positive is Koro's 50 plus years of experience. Steve has been there since the beginning, he knows everything about gear cutting. We are all trying to help our customers and sometimes, they don't know where to go with a particular problem. It's nice to have Koro to turn to, to run the jobs I don't run in my plant. They also sharpen hobs, which is very convenient for me."
Mike Pallow
"Koro Industries shows an attention to detail and quality above other vendors.  When others have tried and failed to produce intricate parts for us, Koro has shone for us many times by manufacturing top quality parts and delivering on time.  Communication throughout the ordering and manufacturing process is excellent.  Koro has become more than just another vendor, they've become a key partner in the success of our business."
Angela Meier
“We value you [Koro] as a supplier and look forward to continued business. Your ability to meet delivery dates with top quality parts is unparalleled. Thank you for all you do.”
Logistics Management and Quality Assurance Departments Miniature Drive Systems Manufacturer
Koro Industries received a delivery index of 100%, a quality index of 100% and an overall quality index of 100%. A value >99% is considered to be a rating of “Outstanding” by our customer. Deliveries for this customer are scheduled via a Kanban fulfillment system from which Koro receives daily triggers. This information is taken from the Supplier Quarterly Performance Rating for the period 01/04/2016 thru 03/31/2016.
Performance Rating from the Director of Quality Leading Aviation Instrumentation Manufacturer
“Koro far exceeds competitors. There have been a number of times when we have chosen another vendor to receive a better price and they have failed with quality. We have come to Koro with minute urgent orders and they have come through offering the quality we need in the time frame they promised.” Koro Industries has saved us […] from a number of binds and we are thankful to have them as a vendor…” and, “Keep up the great work!”
General Industry Customer