DeWalt 3M Width Bearing Hammer Gear DCH143 DCH253 DCH273

DeWalt 3M Width Bearing Hammer Gear DCH143 DCH253 DCH273

This gear fits below the hammer unit, which is what provides hammer action to your SDS drill. The teeth on these will grind down with use, and will eventually begin to slip. If you notice your drill start to slip or jitter whilst using the hammer, this part could be responsible

Please see suitable models below: