About Astro Hydraulics

Astro Hydraulics, Powered by Kundinger, specializes in the repair, replacement and manufacture of hydraulic and pneumatic cylinders—regardless of make, model or size. Our capabilities also include repair and replacement of hydraulic hoses, pumps, valves, cylinders and seals.

We maintain a large inventory of steel tubing, hydraulic hoses, fittings and seals to support fast, reliable repair of both standard and metric components. Our skilled technicians build custom cylinders every day, delivering solutions that meet or exceed original OEM performance.

New look. Same trusted team

Astro Hydraulics is part of the Kundinger Family of Brands—a connected network of companies delivering fluid power, service, hydraulics and automation solutions across Wisconsin and Michigan. While you'll notice an updated look, nothing about how we operate has changed. You'll continue working with the same team you trust, with the same level of service and quality you expect.

What this connection means for you is simple:

• • Greater access to expertise
• • Expanded capabilities
• • A more seamless way to get the support you need

…all backed by Kundinger's shared standards and network.

Astro Hydraulics has been a family-owned business since its acquisition by Jerry Wildenberg in 2012, with his family actively involved in operations. In 2024, Astro Hydraulics became part of Kundinger Service and Repair Solutions, further strengthening our ability to serve customers across northeast Wisconsin and beyond. Jerry continues to lead operations, ensuring continuity, expertise and the hands-on service our customers rely on.