PROTECTIVE SPIRAL

871 962 39 PROTECTIVE SPIRAL is usually found tucked away, doing the dirty work of keeping contaminants out of a critical joint or bearing assembly. Think of it as the first line of defense for a cylinder rod or a rotating shaft, stopping all that rock dust and muck from getting where it shouldn't. It essentially takes the brunt of the wear so the more expensive bits don't have to.

When this little guy starts to give up the ghost, usually what happens is you'll see accelerated wear on the components it's supposed to be protecting. Maybe the cylinder rod starts getting scratched up, or a bearing housing gets packed with grit. You might even notice the movement getting a bit sluggish or sticky, especially if it's on a feed cylinder or something that needs smooth travel. It's not always a dramatic failure, but it definitely shortens the life of bigger, more expensive parts.

Replacing one of these isn't usually a huge job, but it's crucial to get it right. Always make sure the surface it's protecting, like the rod or housing bore, is clean and free of burrs or scratches before you put the new one in. A lot of guys forget to give that mating surface a good once-over, and then the new ring wears out fast or doesn't seal properly. Don't cheap out on cleaning.