PN70042 Heavy-Duty Flanged Hub Agricultural Bearing Unit ── 40mm x 127mm x 106.5mm (1.575" Bore) | Sealed High-Speed Disc Harrow & Seeder Unit | Fits Horsch 28077800 28077900 | Replaces PFI PHA70042, AG-0021, RM-056

✦ Technical Specifications & OEM / Interchange Matrix

Bearing Part Number: PN70042 / PHA70042 (Integrated Extended Shaft Flanged Hub Unit)

Precise Physical Dimensions:

Inner Diameter (Shaft Bore - d): 40 mm (1.575 in)

Outer / Flange Diameter (OD - D): 127 mm (5.000 in)

Overall Width / Length (B): 106.5 mm (4.193 in)

OEM Equipment Replacements:

Horsch Machinery OEM: PN70042, 28077800, 28077900

Major Brand & Aftermarket Cross-References:

PFI Bearing: PHA70042

Aftermarket Designations: AG-0021, RM-056

⚡ Structural Advantages & Heavy-Duty Performance

127mm Reinforced Extended Shaft Flange Architecture: Heavy-duty integrated 127mm flange housing with a 106.5mm extended shaft design provides unrivaled structural rigidity, high torque absorption, and zero alignment deflection under high-speed tillage drag.

Double-Row Angular Contact Internal Core: High-precision double-row ball architecture engineered to absorb continuous severe combination radial and axial dynamic shock loads during deep soil penetration.

Multi-Lip Cassette Sealing Barrier: Advanced multi-lip cassette rubber seals form a permanent defensive shield against moisture, mud, slurry, and abrasive soil grit contamination.

Maintenance-Free Synthetic Pre-Lubrication: Factory pre-filled with high-grade wide-temperature agricultural synthetic grease, completely eliminating daily routine field maintenance and grease washout.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Horsch Tillage & Seeding Equipment: Direct fit replacement for Horsch Joker disc harrows, Pronto seed drills, and high-speed soil conditioning machinery requiring a 40x127x106.5mm unit.

High-Speed Disc Harrows & Cultivators: Essential heavy-duty hub bearing assembly for large-diameter soil opener discs, rolling coulters, and stubble cultivators operating under intense field drag.

Severe Duty Tillage Tools: Designed for deep tilling implements and broadacre farming operations working under continuous high field speeds and harsh soil conditions.