Hydraulic safety that works as hard as you do

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HNA Group was founded by diesel fitters who were tired of seeing the same avoidable risks play out again and again during shutdowns and day-to-day maintenance. From those early conversations on the job, Anthony Lye and Craig Hall decided there had to be a better, safer way to work with hydraulics.

Since then, the Bowen Basin-based company has become a trusted engineering partner to major mining and equipment operators, including BHP, Rio Tinto, Liebherr and Thiess. Their growing suite of hydraulic safety solutions is built to do one thing: reduce risk without slowing you down.

Hydraulic tools are powerful and effective, but that power comes with the risk of high-pressure fluid injection injuries, especially during testing, coupling, or tool changes. HNA’s Tooling Covers are designed to minimise this danger by shielding critical connection points on hydraulic equipment.

Built specifically for hydraulic tools, the HYD Tool Sock reduces the risk of fluid escaping from hoses and swivels during use. Its standout features include:

• Pin-hole protection up to 800 bar for 1 minute, using densely woven polyamide
• Full RS23 and MDG41 compliance
• FRAS-rated for use in mining environments
• Easy access for inspections via Velcro seams
• A secure camlock to keep everything in place
• Custom-made to suit your existing tooling

Designed with fitters in mind, the HYD Tool Sock can be fitted quickly and reused again and again, whether you're in the workshop or out in the pit.

The HNA Band is a versatile sleeve designed to wrap around high-pressure connections on both tools and machinery. It’s made from flame-resistant, anti-static materials and features:

• Two- to three-stage fastening with Velcro and buckled strapping
• Protection from pin-hole bursts and hydraulic spray
• Fitment options for either temporary jobs or permanent machine install
• Pressure-washable and environmentally friendly

Available in multiple widths and lengths—or custom-made to order—the HNA Band can be applied just about anywhere high-pressure fluid runs through fittings or pipes. And with optional anti-corrosive Denso tape, permanent installs are built to last.

The Gauge Cover completes HNA’s Tooling Covers range. Designed for hydraulic gauges used during testing and adjustments, it:

• Reduces risk of exposure to fluid or air bursts
• Offers the same 0.8mm pin-hole protection at 800 bar
• Is hands-free, thanks to a magnetised backing—letting maintainers place the gauge out of harm’s way while under test
• Is made to fit any gauge on the market, customised per application

When it comes to hydraulic circuits on heavy machinery, a single hose failure can cause injury, environmental harm, or even fire. Traditional sleeving methods often require full hose removal, meaning downtime, contamination risk, and extra labour.

HNA’s Burst Sleeve Kits offer a smarter solution: engineered sleeves custom-fit to high-risk hydraulic circuits, without the unnecessary bulk or disruption.

Rather than covering the entire machine, HNA’s sleeves are designed to target specific circuits known to present risk.

Each kit comes:

• Pre-labelled with matching OEM hose part numbers
• With installation diagrams to make setup simple
• In your choice of full sleeves or split-and-Velcro sleeves for quick wraparound installs—no hose removal required

This means you keep your machine clean, avoid circuit contamination, and get back up and running faster.

And HNA’s sleeves are tough. They:

• Withstand 11,600 PSI pin-hole penetration for up to 1 minute
• Stay secure with sewn-in Velcro straps—no zip ties, no heat shrink
• Reduce installation time, labour costs, and circuit exposure
• Are RS23 compliant, used by top-tier operators across the industry

In one real-world example, HNA’s burst sleeve kit was installed on a CAT 6040 excavator, covering the main and swing pump circuits. The old method took 4 tradesmen, full hose removal, and a day of downtime; HNA’s method takes only 2 tradesmen, requires no hose removal, and the job is done in just 1.5 hours.

That’s the kind of efficiency that pays for itself, without compromising safety.

Whether it’s a quick coupler job or a full machine maintenance, HNA Group’s covers and sleeves are making hydraulic safety easier, faster, and smarter. Each solution is designed from lived experience, tested in real conditions, and backed by some of the biggest names in mining.

To find out more or request a custom kit, visit www.hnagroup.com.au or contact Anthony and Craig directly—because at HNA Group, you’ll always speak to someone who’s walked the same path.