205KR3 Agricultural Bearing (3/4" Bore) ── 19.05mm x 52mm x 17.76mm | Heavy-Duty Sealed Planter Disc Unit | Fits John Deere JD9331, Case IH 669807C91, Lilliston 20-50-012 | Replaces Timken Fafnir 205KR3, BCA 205RHN, A&I A-205KR3

⚙️ Technical Specifications & OEM Interchange Matrix

Bearing Part Number: 205KR3 / 205RHN (Heavy-Duty Sealed Planter Bearing)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 19.05 mm (0.750 in / 3/4 in)

Outer Diameter (OD - D): 52 mm (2.047 in)

Width (B): 17.76 mm (0.699 in)

OEM Equipment Replacements:

John Deere OEM: JD9331

Case IH (CNH) OEM: 669807C91

Lilliston OEM: 20-50-012

Brand Interchange Cross-Reference:

Fafnir / Timken: 205KR3

BCA / National: 205RHN

A&I Products: A-205KR3

⚡ Structural Advantages & Heavy-Duty Performance

Maintenance-Free Sealed Protection: Factory pre-lubricated with high-grade wide-temperature agricultural grease, eliminating daily field greasing while preventing lubricant washout during heavy tilling and planting operations.

Heavy-Duty Multi-Lip Contact Sealing: High-efficiency contact rubber seals create a solid barrier against moisture, mud, abrasive soil grit, and fertilizer dust contamination.

Vacuum-Degassed GCr15 Chrome Steel: Manufactured from premium high-carbon chromium steel (AISI 52100) for maximum dynamic load capacity and superior fatigue resistance under continuous field shock.

Precision Bore Fitment: Engineered to exact 3/4" (19.05mm) bore tolerances for optimal shaft seating, smooth rotation, and minimal fretting corrosion.

🚜 Agricultural Machinery Deployment & Usage Scenarios

John Deere, Case IH & Lilliston Equipment: Direct fit replacement component for John Deere row crop planters, seed openers, Case IH tillage machinery, and Lilliston peanut combines and cultivators.

Planters & Seed Drills: Essential replacement bearing for row crop planters, seed openers, gauge wheels, and disc coulter hub assemblies requiring a 3/4" bore bearing.

General Agricultural Implements: Suitable for various agricultural seeding, planting, and harvesting drive units requiring heavy-duty sealed protection.