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NTN Sealed Disc Bearing – 1-3 /4 Inch Round Bore

Original price was: $60.84.Current price is: $43.19.

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SKU: SMA-321-DS209TT6E Category:

When your disc harrow starts making that grinding noise or you notice the disc blades wobbling, it’s usually the gang bearings crying for help. A worn bearing doesn’t just sound bad—it creates uneven tillage, burns more fuel, and can wreck your entire gang if it lets go at the wrong time. This sealed NTN bearing comes pre-packed with quality grease that’s formulated for disc bearing applications, so you can get back to cutting through corn stalks and working up that perfect seedbed.

What You’re Getting

  • Sealed construction means you don’t have to worry about greasing schedules or contamination from field dust
  • Spherical outer race design lets the bearing self-align, reducing stress on the housing and extending service life even when shafts aren’t perfectly straight
  • 87mm outer diameter with precise 1-3/4 inch round bore for proper fit
  • Built to handle the side loads and impacts that destroy lesser parts during tough tillage work
  • Direct replacement design that installs just like the original

Built for Real Farm Work

Whether you’re running through corn stalks or using your harrow to incorporate cover crops, this bearing handles the side loads and impacts typical of stop-and-go tillage operation. This bearing fits disc harrows with 1-3/4 inch round axles—the workhorses that break up compaction, incorporate residue, and prepare your seedbed.

Made to Last

Disc harrow bearings take a tremendous beating from field debris, moisture, and constant vibration. This NTN bearing is engineered specifically for agricultural applications, with heavy-duty construction and superior sealing that keeps dirt out and grease in where it belongs.

Installation Notes

This is a direct replacement bearing that installs just like the original. While you have the gang apart, inspect all bearings on that shaft—they typically wear at similar rates, and replacing just one often means you’ll be back under there next season.