BLOCO DE SUPORTE

551 875 83 BLOCO DE SUPORTE is one of those unsung heroes, really. It’s typically bolted right onto the feed beam, acting as the main anchor point for the feed cylinder’s rod end. Think of it as the solid base that keeps the cylinder from just flopping around. It takes the brunt of the push and pull forces when you’re drilling, making sure that cylinder stays exactly where it needs to be to drive the rock drill forward or retract it. Without it, your whole feed system would be out of whack.

When this block starts to give up, you’ll usually notice some slop or play in the feed system. The most common thing is the feed cylinder not tracking straight anymore, or you might hear a new knocking or clunking sound, especially when the feed is reversing or hitting its end stops. Sometimes, if it’s really bad, you’ll see uneven wear on the guide rails because the drill is pushing sideways a bit, or the cylinder rod might even start showing signs of bending due to the off-axis load. It’s not just an annoyance; that misalignment can really chew up other components fast.

Look, replacing this isn't rocket science, but you’ve got to make sure the mounting surface on the feed beam is clean and flat before you bolt the new one down. Don't just slap it on. Always check the bolts for stretch or damage, and use new ones if there's any doubt – they take a beating. And here’s the kicker: double-check the torque specs for those mounting bolts. It’s easy to overtighten or undertighten, and either way, you’re asking for trouble down the road, either cracking the new block or having it work loose again.