207KRR Agricultural Bearing ── Heavy-Duty Sealed Disc & Tillage Unit | 35mm x 72mm x 25mm (1.378" Bore) | Fits John Deere JD10089 | Replaces Timken Fafnir 207KRR, INA 207-KRR-AH03, NTN 88507

✦ Technical Specifications & OEM Interchange Matrix

Bearing Part Number: 207KRR / 207KRRZ17P (Heavy-Duty Extended Inner Ring Unit)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 35 mm (1.378 in)

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

Inner Ring Width (B): 25 mm (0.984 in)

OEM Equipment Replacements:

John Deere OEM: JD10089

Major Brand Cross-References:

Fafnir / Timken: 207KRR, 207KRRZ17P

INA: 207-KRR-AH03

NTN: 88507, 88107

⚡ Structural Advantages & Heavy-Duty Performance

Extended Inner Ring Architecture: 25mm wide inner ring design distributes operational loads across a wider shaft surface, dramatically reducing shaft wear, fretting corrosion, and rotational chatter under heavy torque.

Maintenance-Free Sealed Protection: Factory pre-lubricated with high-grade wide-temperature agricultural grease, eliminating daily field greasing while preventing lubricant washout during severe field conditions.

Heavy-Duty Rubber Contact Seals: Advanced multi-lip contact rubber seals form an airtight 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.

🚜 Agricultural Machinery Deployment & Usage Scenarios

John Deere Machinery: Direct fit replacement component for John Deere tillage equipment, grain drills, planter drive shafts, and implement support units.

Tillage & Soil Preparation Equipment: Ideal for heavy disc harrows, rotary tillers, seedbed conditioners, and subsoiler attachments requiring a 35mm extended inner ring bearing.

Implement Shaft Drives: Suitable for general agricultural implement drive shafts, idler rollers, and PTO transmission support assemblies.