STEEL RACK

550 191 97 STEEL RACK is one of those critical bits that keeps your rig moving across the site without a hitch. It’s essentially a big, tough roller that supports the weight of the machine and guides the track chain as it rotates. Think of it as a heavy-duty idler, but specifically designed to handle the constant pounding and abrasive conditions you find on a drill site. It helps distribute the load evenly across the track pads, which is crucial for stability and traction, especially when you’re maneuvering on uneven ground or setting up for a new hole. Without these doing their job right, the whole undercarriage system starts to get out of whack pretty quickly.

When this part starts to go, you'll definitely notice it. Usually, what happens is the bearings inside begin to wear, or the outer rim gets chewed up from rocks and debris. You might start hearing a grinding or squealing noise coming from the undercarriage, especially when the rig is tracking. Another dead giveaway is if the track chain starts to run loose or even derails more often than it should. That’s because a worn STEEL RACK can’t properly guide the chain, leading to excessive slack or misalignment. You might also see uneven wear on your track pads or even on the idler and drive sprocket, which tells you something isn't rolling true.

Replacing one of these isn't rocket science, but you do need to pay attention to a few things. First off, always check the condition of the track frame itself where the wheel mounts; sometimes a worn wheel can cause damage there too. And don't forget to inspect the mounting bolts and washers – they take a beating and often need replacing along with the wheel. Make sure you torque everything down to spec, otherwise, you'll be back out there sooner than you want, chasing down another problem. It's a good idea to check the tension of the track chain after replacement, too, just to make sure everything's sitting right.