3204 Double Row Angular Contact Ball Bearing ── 20mm x 47mm x 20.6mm (0.787" Bore) | Heavy-Duty Agricultural & Industrial Drive Bearing | Replaces 3204-2RS, SKF 3204 A, FAG NTN 3204 B, 5204

✦ Technical Specifications & Brand Interchange Matrix

• Bearing Part Number: 3204 / 3204-2RS / 5204 (Heavy-Duty Double Row Bearing)

• Precise Physical Dimensions:

  • Inner Diameter (Bore - d): 20 mm (0.787 in)

  • Outer Diameter (OD - D): 47 mm (1.850 in)

  • Overall Width / Thickness (B): 20.6 mm (0.811 in)

• Industry & Brand Cross-References:

  • Metric Standard Designation: 3204 / 3204-2RS

  • American / Industry Equivalent: 5204

  • SKF Standard Designation: 3204 A

  • FAG / NTN / KOYO Variants: 3204 B / 3204-2RS / 3204 LLU

⚡ Structural Advantages & Heavy-Duty Performance

• High-Rigidity Double Row Angular Contact Geometry: High-precision internal ball arrangement provides exceptional structural rigidity capable of supporting heavy radial loads and bi-directional thrust loads simultaneously.

• Dual Contact Rubber Sealing System: High-efficiency contact rubber seals form an airtight defensive barrier against moisture, mud, slurry, and abrasive fertilizer dust.

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

• Vacuum-Degassed GCr15 Chrome Steel: Premium high-carbon chromium steel construction provides maximum dynamic load capacity and superior fatigue resistance under severe field vibration.

🚜 Agricultural & Industrial Machinery Deployment

• Agricultural Implements & Seeders: Direct fit replacement bearing for planter openers, gauge wheels, coulter hubs, and soil preparation tools requiring a 20x47x20.6mm double-row bearing.

• Industrial Gearboxes & Drives: Essential heavy-duty bearing unit for speed reducers, electric motors, hydraulic pumps, and conveyor pulley assemblies.

• Severe Duty Power Transmission: Designed for demanding machinery operating under heavy soil drag, wet field slurry, and abrasive dirt exposure.