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Caterpillar's heavy-duty skid steers are globally trusted for their reliability. Their versatility comes from the hydraulic quick coupler system—the heart of the machine—which powers a wide array of attachments for industries from construction and mining to agriculture and forestry.

Hydraulic quick couplers facilitate the quick connection and disconnection of fluid lines in a quick and convenient way.

Get Maximum Performance from Your Skid Steer Hydraulics. The right Bobcat quick couplers​ are essential for a peak-performing skid steer hydraulic system. They ensure efficient, leak-free operation for your machine and all its attachments.

Hydraulic systems are what keep heavy machinery running and getting the job done. They provide the power behind many critical functions, and when something goes wrong, safety can quickly become an issue. That’s why understanding working pressure and burst pressure ratings is so important. In this guide, we’ll break down pressure ratings in a simple, easy-to-understand way to help you choose the right hydraulic components and keep your system running safely and reliably.

ISO 7241:2014 defines the performance and dimensional requirements for both Series A and Series B hydraulic quick couplings.

Flat-face hydraulic quick couplers are designed to reduce leakage and help protect workers from high-pressure hydraulic fluid dangers.

Cat skid steer quick attach systems​ boost jobsite flexibility but face two frequent issues: connecting under pressure​ and hydraulic leaks. Learn proven solutions to these problems to maintain peak machine safety and efficiency.

The true power of a compact excavator lies in its ability to use specialized attachments. From buckets and breakers to augers and grapples, these tools expand the machine’s functionality. However, selecting the right Bobcat mini excavator attachments—and ensuring they are paired with compatible auxiliary hydraulic couplings—is as crucial for compact models as for larger equipment.

Leaking auxiliary hydraulic couplers on Bobcat excavators and skid steers halt productivity, drive up maintenance costs, and pose serious safety risks. Learn critical safety precautions, avoid common repair mistakes, implement preventative maintenance, and discover EH's reliable coupler solutions to restore your Bobcat equipment's efficiency and safety.

Learn how to identify the various types of quick coupler fittings and hydraulic threads including the most common NPT thread and others such as SAE, BSPP, JIC, ORFS and others.

Unit conversions & Seals temperature range.

Caterpillar utility vehicles​ are designed for versatility, allowing you to switch between attachments to complete various tasks with a single machine. To maintain this efficiency, follow two key principles: select the correct Cat skid steer attachments​ for your job, and ensure your auxiliary hydraulics system​ is configured for peak performance and reliability.

Common industry terms related to hydraulic quick couplers and valves.

Specialty hydraulic quick coupler adapters​ solve challenging connection problems. We provide custom and replacement couplers that ensure perfect fit, reliable performance, and seamless compatibility between new and old equipment.