Z9504RST Agricultural Ball Bearing (3/4" Bore) ── 3/4" x 1.7805" x 0.61" | Heavy-Duty Sealed Implement & Planter Drive Bearing | Replaces Fafnir P204RR6 204KRNP-2, BCA 204BBAR, Koyo DG1945BRKA, Link-Belt SC0451IIC3, Peer SKF PER.Z9504-2RSTFPC3F6

⚙️ Technical Specifications & Brand Interchange Matrix

Bearing Part Number: Z9504RST / P204RR6 (Heavy-Duty Agricultural Ball Bearing)

Precise Physical Dimensions:

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

Outer Diameter (OD - D): 1.7805 in (45.225 mm)

Overall Width / Thickness (B): 0.61 in (15.494 mm)

Brand Interchange Cross-References:

Peer / SKF: Z9504RST, PER.Z9504-2RSTFPC3F6

Fafnir / Torrington: P204RR6, 204KRNP-2

BCA / Federal-Mogul: 204BBAR

Koyo / JTEKT: DG1945BRKA

Link-Belt / Rexnord: SC0451IIC3

⚡ Structural Advantages & Heavy-Duty Performance

Heavy-Duty Rubber Contact Sealing Protection: Advanced contact rubber seals form a tight barrier against dirt, mud, moisture, and fertilizer dust contamination.

Precision Outer Ring Fit: Engineered for smooth housing seating across agricultural equipment assemblies, minimizing operational vibration and misalignment.

Maintenance-Free Synthetic Pre-Lubrication: Pre-filled at the factory with high-grade wide-temperature agricultural synthetic grease, eliminating daily field greasing and grease washout.

Vacuum-Degassed GCr15 Chrome Steel Core: High-precision chrome steel balls and raceways provide elevated dynamic load capacity and maximum resistance against operational fatigue.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Planters & Grain Drills: Direct fit replacement for row crop planters, grain drills, and seed metering drive shafts requiring a 3/4" bore bearing.

Tillage Equipment & Disc Harrows: Essential heavy-duty bearing unit for disc harrows, rolling cultivators, and soil preparation implements operating under continuous field drag.

Severe Duty Power Transmission: Designed for demanding agricultural machinery operating under heavy soil drag, wet field slurry, and abrasive dirt exposure.