GL304KPP72 Heavy-Duty Agricultural Spherical Ball Bearing (OD 72mm x Width 23mm) ── Heavy-Duty Multi-Lip Sealed Tillage & Planter Drive Unit | Replaces 304KPP72 Series Agricultural Hub Assemblies

⚙️ Technical Specifications & Structure Details

Bearing Part Number: GL304KPP72 / 304KPP72 (Heavy-Duty Agricultural Spherical Bearing)

Precise Physical Dimensions:

Outer Diameter (OD - D): 72 mm (2.835 in)

Overall Width / Thickness (B): 23 mm (0.906 in)

Outer Ring Profile: Spherical Outer Ring (Outer Diameter: 72mm)

Sealing Type: Heavy-Duty Multi-Lip Contact Rubber Seals (KPP / Tri-Ply Protection)

⚡ Structural Advantages & Heavy-Duty Performance

Specialized KPP Multi-Lip Sealing Technology: Advanced multi-lip contact rubber seals form a permanent defensive shield against mud, water, slurry, fertilizer dust, and abrasive soil grit contamination.

Spherical Outer Ring Alignment Fit: Precision-ground 72mm spherical outer ring allows self-alignment within housing units, eliminating stress concentrations caused by shaft deflection.

Maintenance-Free Synthetic Pre-Lubrication: Pre-filled at the factory with high-grade wide-temperature agricultural synthetic grease, eliminating daily field routine maintenance and lube washout.

Vacuum-Degassed GCr15 Chrome Steel: Premium high-carbon chromium steel construction provides elevated dynamic load capacity and maximum resistance against continuous operational fatigue.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Tillage Machinery & Disc Harrows: Essential heavy-duty bearing unit for disc openers, rolling coulters, stubble cultivators, and soil conditioning machinery requiring a 72mm OD bearing.

Planters & Seed Drills: Direct fit replacement for row crop planters, seed drill metering drive shafts, and gauge wheel hub assemblies.

Severe Duty Farm Implements: Designed for demanding agricultural equipment operating under heavy soil drag, wet field slurry, and abrasive dirt exposure.