Wider blades are especially valuable for preventing soil buildup on the rear-gang blades. You can also add a knock out scraper bar. You'll appreciate this option if you frequently disk in moist, sticky soil. The wide, top-mounted paddle removes buildup from around spools as well as blades. Extra-long triple lips on the inner race team with a wide seal between the outer race and flange.
Bearings are greasable for long life.
Optional bearing-wear guards are recommended to reduce flange wear when you work in abrasive soil or need to disk deep. They are not recommended in rocky soil. Continuous-weld spools add protection. Straight standards are massive. This design directs thrust forces upward, prevents twisting of the gang tube when you encounter an obstacle in the field.