High-speed cultivation at 15–20 km/h places immense axial tilting moments and slurry pressure on Horsch Joker disc gangs and Pronto/Maestro seeding coulters. Direct Agri Parts produces 5-bolt maintenance-free cassette-sealed hub units (#28077800 / #28077900), 520 mm notched 30MnB5 boron discs, and double-disc seed openers built to exceed 100,000-hectare durability benchmarks.
Integrated heavy-duty 5-bolt flange bearing hub with cassette triple-lip seal for severe field tillage
Through-hardened 30MnB5 aggressive notched disc blade for European high-speed compact disc cultivators
Precision-ground boron steel no-till seed opener disc with pre-riveted double-row triple-lip bearing
Direct replacement cross-reference numbers, base metallurgy, and factory minimum order quantities (MOQ). All OEM part numbers and brand names are used strictly for fitment identification.
| Factory SKU | Part Description | OEM Cross-Reference # | Material / Hardness | MOQ | Action |
|---|---|---|---|---|---|
BRG-HUB-2807 | Maintenance-Free Mud-Proof Disc Harrow Bearing Hub Unit | 28077800280779005554502AH167739 | Bearing Rings & Balls HRC 60-64 | 50 PCS | Quote → |
TIL-DSC-620B | Notched Boron Steel Concave Disc Harrow Blade (510mm / 620mm / 736mm) | 3490465349046928071402820-259C | HRC 48-52 Uniform Through-Hardness | 100 PCS | Quote → |
SED-OPN-AA65 | Heavy-Duty Planter Double-Disc Seed Opener Blade & Sealed Hub Assembly (15" x 3.5mm) | AA65248AA55927AA3747487495784 | Blade HRC 50-54 / Bearing HRC 61-65 | 150 PCS | Quote → |
Yes. Our 28077800 / 28077900 replacement hub features double-row angular contact 100Cr6 ball raceways, an integrated 6-lip cassette seal with external steel labyrinth shield, Mobil/Klüber synthetic grease, and 500-hour salt-spray Dacromet corrosion protection.