Description
When you’re trying to place seed in tough conditions or heavy residue, having disc openers that cut clean and roll smooth makes all the difference. This 15-inch opener assembly is built to handle the demands of no-till and minimum-till planting while giving you the reliable performance that keeps you moving through the field.
What You’re Getting
- Heavy-duty 15-inch disc with 3.5mm thickness for durability and clean cutting action
- Bearing flange positioned on the bevel side for improved strength and easier maintenance
- Precision bearing assembly that keeps the disc spinning true season after season
- Quality riveted construction using 5/16-inch rivets for long-lasting attachment
- Direct replacement design that bolts right on without modifications
Built for Real Farm Work
This opener assembly is designed for Sunflower 9100, 9200, 9300, and 9400 series planters from year 2000 and up. These are serious planting machines built for covering ground in corn, soybeans, and other row crops where precise seed placement and consistent depth control matter most.
Made to Last
The 15-inch disc gives you the cutting diameter to slice through residue while the 3.5mm thickness provides the strength to handle rocks and hard ground without bending. The bearing assembly is built to handle the side loads and impacts that come with field work, and the flanged design makes bearing replacement straightforward when maintenance time comes.
Good to Know
This assembly uses dust cap part number 527-144266 to keep dirt and debris out of the bearing. Check your existing dust caps when installing – if they’re cracked or missing, it’s worth replacing them at the same time to protect your investment. The opener mounts with standard hardware and aligns with your existing row unit spacing.


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