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Colonial Tool Group, Inc. (CTGI), often referred to simply as Colonial, has a storied history rooted in innovation and growth. Since its early beginnings in 1929, the company has undergone several transformations, evolving into a leader in precision manufacturing.
Over the decades, Colonial has expanded its capabilities through strategic acquisitions and a steadfast commitment to quality, enabling us to serve diverse industries worldwide.
With a focus on advanced technology, expert craftsmanship, and customer-driven solutions, Colonial continues to build on its legacy, delivering cutting-edge broach tools, special machines, precision spindles and custom cutting tools.
Windsor, 1950 — the crew behind Colonial Tool’s early success stand proudly outside our original facility where a legacy of precision and innovation began.
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Our Windsor location in 1950 versus the present day.
A look inside Colonial Tool’s 1975 brochure, showcasing 'The Plant and People', a tribute to the skilled team and advanced facility driving innovation.
Colonial's innovative spirit has continued throughout our history. Colonial has been awarded several US and International Patents on its products and processes throughout the years.
US Patent #6,042,273
One of our unique features to our modular spindles. The Adjustable Preload spindles helps our customers commonize on our spindles, through engine manufacturing plants, reducing the need for excessive spare spindles; this spindle can be used in a variety of applications and configurations. The cost savings to our customers—in using this spindle—has been as high as $500,000 at one plant alone.
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US Patent #4,867,619
The High Speed Spindle with Adjustable Tool was developed with a motorized spindle: to reduce complexity of separate components it has the features necessary for our customers to produce rounder holes and straighter holes. These units have proven to achieve cylindricity of parts within a few microns, and increased tool life—as much a three times the expected levels.
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United States Patent #4,498,361
This Broach Manufacturing Method #1 used by Colonial rewarded us with significant market share, unmatched quality in roundness, and increase our throughput tenfold in critical manufacturing areas of our plant. This broach manufacturing continues to outperform traditional methods. Company Recognition Over the years, Colonial has provided unsurpassed products and services, which have kept us on the forefront of the minds of our customers when they are in need. Please take a moment to review the testimonials of our satisfied customers.
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United Statues Patent #4,850,253
This Broach Manufacturing Method #2 used by Colonial rewarded us with significant market share, unmatched quality in roundness, and increase our throughput tenfold in critical manufacturing areas of our plant. This broach manufacturing continues to outperform traditional methods.
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