203KRR7 Agricultural Bearing ── 17mm x 40mm x 12mm (0.669" Bore) | Heavy-Duty Sealed Planter & Grain Drill Disc Unit | Fits John Deere AN160215 AA21480, Great Plains 822-011C, Kinze GA2014 | Replaces Timken Fafnir PEER Link-Belt 203KRR7

⚙️ Technical Specifications & OEM Interchange Matrix

Bearing Part Number: 203KRR7 (Heavy-Duty Sealed Grain Drill & Planter Unit)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 17 mm (0.669 in)

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

Width (B): 12 mm (0.472 in)

OEM Equipment Replacements:

John Deere OEM: AN160215, AA21480 (Grain drill opener discs & planter units)

Great Plains OEM: 822-011C (Planter / seeder row units)

Kinze OEM: GA2014

Major Brand Cross-References:

Timken / Fafnir: 203KRR7

PEER Bearing: 203KRR7

Link-Belt: 203KRR7

⚡ 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.

Heavy-Duty Multi-Lip Contact Sealing: Advanced rubber contact 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 Alignment: Manufactured to standard 17mm tolerances for optimal shaft seating, smooth rotation, and minimal fretting corrosion under high rotational torque.

🚜 Agricultural Machinery Deployment & Usage Scenarios

John Deere, Great Plains & Kinze Equipment: Direct fit replacement component for John Deere grain drill opener discs, Great Plains planter row units, and Kinze seeder assemblies.

Grain Drills & Row Crop Planters: Essential replacement bearing for grain drill openers, seed openers, gauge wheels, and disc coulter hub assemblies requiring a 17mm bore bearing.

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