Ace Ratchet Collar Slim:
Unrivalled holding force
The ARC‑Slim delivers industry-leading strength in a small, efficient design. Built for versatility, it fits any size or grade of API pipe and performs flawlessly in both standard and close‑tolerance applications. Whether for challenging wells or global operations, ARC‑Slim adapts to your needs - without compromise.
As with the original Ace Ratchet Collar, the ARC-Slim delivers unrivalled holding force under all operating conditions and is the first 90,000lb+ rated stop collar on the market. Uniquely designed, the ARC-Slim mounts downhole accessories directly to the outside of the casing or completion string.
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Anchor accessories reliably, reduce downtime, cut costs.

Why choose the Ace Ratchet Collar?
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Zero loose or moving parts reduces the impact on drift and reduces the risk of junk downhole
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Ideal for chromium pipe as minimal marks left on pipe
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Flexible in their application – suitable for use with any 3rd party centralizer or casing accessory
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Available off-the-shelf, so no long production leadtimes and transferable between projects
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Slim design is perfect for close tolerance operations, which enables it to pass tight restrictions and effectively manage surge and swab
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Slim design allows for faster running speeds, even in formations with narrow mud margins
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1 minute install time per unit, with no pipe preparation or transportation required
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Versatile in application as it is independent of weight, grade and thread
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Proven to reduce costs by up to 80% when compared to centralizer subs
Features
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Unrivalled holding capabilities – able to withstand minimum axial load of 90,000lb and tested to withstand axial loads up to 180,000lb while meeting passthrough requirements
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Mounted directly to any size and grade API pipe in yield strengths up to 140ksi
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Slim design for close tolerance applications, also available in custom sizes on request
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Manufactured from 4140 steel or chrome materials with non-standard materials available on request
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We offer client training and remote installations, contributing to reducing carbon emissions. Read more about the installation and environmental responsibility:
