5203KYY2 Double Row Agricultural Bearing ── 16.256mm x 40mm x 44.12mm (0.640" Bore) | Heavy-Duty Sealed Planter Disc Opener & Gauge Wheel Bearing | Fits John Deere AN212132, Great Plains 822-170C, Kinze GA6171, Case IH 324461A1A1 | Replaces Fafnir 5203KYY2, BCA 5203VVAN, Koyo DAC164044-2RS

✦ Technical Specifications & OEM / Brand Matrix

Bearing Part Number: 5203KYY2 / 5203VVAN (Heavy-Duty Double Row Agricultural Unit)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 16.256 mm (0.640 in / 5/8 in)

Outer Diameter (OD - D): 40 mm (1.575 in)

Inner Ring Width / Overall Depth (B): 44.12 mm (1.737 in)

OEM Equipment Replacements:

John Deere OEM: AN212132

Great Plains OEM: 822-170C

Kinze OEM: GA6171

Case IH OEM: 324461A1A1

White / AGCO OEM: 854003

Major Brand Cross-References:

Fafnir / Torrington: 5203KYY2

BCA / Federal-Mogul: 5203VVAN

Koyo / JTEKT: DAC164044-2RS

Peer (SKF): 5203KYY2

⚡ Structural Advantages & Heavy-Duty Performance

Double Row Angular Contact Design: Engineered with a heavy-duty double row ball geometry to absorb intense simultaneous radial and axial thrust loads under continuous high-speed planting operations.

Extended Inner Ring Stability: 44.12mm inner ring width distributes mechanical stress over a wider shaft seating surface, substantially reducing shaft wear, fretting corrosion, and alignment wobble.

Maintenance-Free Multi-Lip Sealing: High-efficiency contact rubber seals form an airtight defense against mud, water, fertilizer dust, and abrasive soil grit contamination.

Vacuum-Degassed GCr15 Chrome Steel: Premium high-carbon chromium steel construction provides maximum dynamic load capacity and exceptional fatigue resistance against heavy field shock.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Row Crop Planters & Disc Openers: Direct replacement bearing for John Deere, Great Plains, Kinze, Case IH, and AGCO White row crop planters, seed opener discs, and gauge wheel hub assemblies.

Grain Drills & Coulters: Essential heavy-duty bearing unit for seed drills, rolling coulters, and soil preparation tools requiring a 16.256mm (0.640") bore double-row bearing.

High-Speed Seeding Equipment: Designed for demanding agricultural seeding implements operating under heavy soil drag, wet field slurry, and dust exposure.