How to Weld a Weld-On Sprocket and Weld-On Hub Together

Before Welding a Weld-On Sprocket

Before welding, confirm that the weld-on hub matches the sprocket series, chain size, bore requirement, and application. For example, XX weld-on hubs can be used with larger weld-on sprocket sizes, with common minimum sprocket sizes including 4024X, 5020X, 6017X, 8014X, and 10013X.

Also check chain clearance before welding. On larger weld-on sprockets, there is usually more room for the weld bead. On smaller weld-on sprockets, weld placement matters because the weld can interfere with the roller chain if it is too close to the chain path.

How to Weld a Weld-On Sprocket and Hub

The most important part of welding a weld-on sprocket and hub together is keeping the hub square to the sprocket. A few careful tack welds and an alignment check can prevent a sprocket that runs crooked after it is installed.

Large vs. Small Weld-On Sprockets

For larger weld-on sprockets, there is usually more room around the hub, which makes weld placement easier. For smaller weld-on sprockets, the weld must be placed carefully so it does not interfere with the chain as it wraps around the sprocket teeth.

In simple terms: clean it, clamp it square, tack it evenly, check it, and keep the weld away from the chain.

Why Have MDS of Michigan Weld It?

If you do not want to risk misalignment, MDS of Michigan can help. Our team can weld weld-on sprockets and hubs together in Jenison, Michigan, and our in-house machinist can help with bore sizing, keyways, and other modifications. This is especially helpful when the sprocket needs to fit an existing shaft, repair job, or custom piece of equipment.