What Is a Test Stand and Why It Matters in Crusher Rebuilds

Rebuilding rock crushers isn’t just about replacing parts, it’s about restoring performance. At Marion Machine, we don’t send a crusher back to work until we know it’s ready to deliver maximum reliability and output. That’s where our test stand comes in.

But what exactly is a test stand, and why is it critical in the crusher rebuild process? Let’s break it down.

What Is a Test Stand?

A test stand is a specialized piece of equipment used to simulate real-world operating conditions for a rebuilt machine before it’s reinstalled in the field. At Marion Machine, we use our in-house test stand to fully power and run crushers after the rebuild process, allowing our technicians to inspect and verify every system so we make sure it’s in perfect working order before it gets sent back to our customer.  It’s like a trial run, except this one happens under expert supervision in a controlled environment.

Why Is It So Important?

✅ Verifies Structural Integrity

After welding, machining, or replacing key components, the test stand allows us to ensure that the frame, mainshaft, and bearings are aligned and functioning as intended.

✅ Checks Lubrication and Hydraulics

Proper oil pressure, flow, and temperature regulation are essential for long-term performance. The test stand gives us the chance to confirm that everything is operating smoothly.

✅ Confirms Operational Readiness

From start-up to shut-down, we evaluate how the crusher performs under real operating conditions—spotting potential issues before they become failures on-site.

✅ Reduces Customer Downtime

When your rebuilt crusher arrives ready to go, you can install it with confidence. That means less troubleshooting, faster setup, and more uptime for your operation.

The Marion Machine Difference

Not every shop has the capability to test large crushers like the 7’ Symons HD, Metso HP300, or Telsmith 5060 under power. Our test stand is designed specifically for high-horsepower, heavy-duty rebuilds. Combined with decades of experience, our rebuilds don’t just look good, they perform better, longer.

Ready to Rebuild with Confidence?

If you’re looking for a partner that doesn’t cut cornersand delivers crushers ready to work?  Contact Marion Machine today. Let’s get your equipment running like new.