208KRR2 Agricultural Bearing ── Heavy-Duty Extended Inner Ring Tillage Unit | 40mm x 80mm x 27mm (1.575" Bore) | Based on 88508 Series Geometry | Replaces Timken Fafnir 208KRR2, BCA 208RR2, Link-Belt 208KRR2, NTN 208KRR2

⚙️ Technical Specifications & Brand Interchange Matrix

Bearing Part Number: 208KRR2 / 208RR2 (Heavy-Duty Extended Inner Ring Unit)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 40 mm (1.575 in)

Outer Diameter (OD - D): 80 mm (3.150 in)

Inner Ring Width (B): 27 mm (1.063 in)

Dimensional Base Reference: Industry Standard 88508-series footprint (40×80mm heavy-duty ring configuration)

Major Brand Cross-References:

BCA / Federal Mogul: 208RR2

Link-Belt: 208KRR2

NTN: 208KRR2

Timken / Fafnir: 208KRR2

⚡ Structural Advantages & Heavy-Duty Performance

27mm Extended Inner Ring Architecture: Extra-wide inner ring design distributes heavy radial and axial shock loads over a larger shaft contact area, eliminating shaft wear and fretting corrosion under high rotational 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 Multi-Lip Contact Sealing: Advanced contact rubber seals create a solid barrier against moisture, mud, abrasive soil grit, and organic fertilizer 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 shock.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Tillage & Soil Preparation Equipment: Ideal for heavy disc harrows, rotary tillers, seedbed conditioners, subsoilers, and roller harrows requiring a 40mm extended inner ring bearing.

Planters & Heavy Grain Drills: Essential heavy-duty drive and support bearing for large-capacity grain drills, row crop planters, and opener hub assemblies.

Heavy Implement Shaft Drives: Suitable for main drive shafts, idler rollers, and PTO transmission support units across various heavy agricultural machinery.