SSA204 Eccentric Locking Collar Insert Ball Bearing (20mm Bore) ── 20x47x31mm | Heavy-Duty Spherical Outer Ring Agricultural Unit | Fits Fafnir Timken GRAE20RRB SSGRAE20RRB, SKF YET 204, FYH SAA204, NTN AEL204-20MM, Asahi KH204
Precision-engineered for agricultural machinery, conveyor drive systems, pillow block housing assemblies, and industrial power transmission equipment, the SSA204 (SAA204) heavy-duty eccentric locking collar insert bearing features exact physical dimensions of 20mm Shaft/Bore (0.787") x 47mm Outer Diameter (1.850") x 31mm Inner Ring Overall Width (1.220"). Built with a narrow inner ring, eccentric self-locking collar mechanism, and heavy-duty contact seals, pre-packed with wide-temperature synthetic grease to ensure positive shaft clamping while locking out mud, crop dust, and moisture under continuous rotational speed. Direct cross-reference replacement for Fafnir / Timken GRAE20RRB / SSGRAE20RRB, SKF YET 204, FYH SAA204, NTN AEL204-20MM, and Asahi KH204.
✦ Technical Specifications & Brand Interchange Matrix
Bearing Part Number: SSA204 / SAA204 (Eccentric Collar Insert Bearing)
Precise Physical Dimensions:
Inner Diameter (Shaft Bore - d): 20 mm (0.787 in)
Outer Diameter (OD - D): 47 mm (1.850 in)
Inner Ring Overall Width (B): 31 mm (1.220 in)
Outer Ring Width (C): 14 mm (0.551 in)
Major Brand Cross-References:
Fafnir / Timken: GRAE20RRB (Standard) / SSGRAE20RRB (Stainless Steel Version)
SKF: YET 204
FYH: SAA204
NTN: AEL204-20MM
Asahi: KH204
⚡ Structural Advantages & Heavy-Duty Performance
Positive Eccentric Locking Mechanism: Unique eccentric collar design secures the inner ring firmly onto the shaft in the direction of rotation, preventing shaft slippage and fretting under dynamic loads.
Spherical Outer Ring Alignment: Precision ground spherical outer diameter allows self-alignment inside housing blocks, compensating for shaft deflection or initial mounting errors.
Heavy-Duty Contact Sealing System: High-efficiency contact rubber seals create a solid barrier against dry crop dust, slurry, moisture, and abrasive dirt contamination.
Maintenance-Free Pre-Lubrication: Pre-filled at the factory with high-grade wide-temperature agricultural synthetic grease, eliminating daily field servicing and lubricant washout.
🚜 Agricultural & Industrial Machinery Deployment
Agricultural Machinery Drives: Ideal insert bearing for combine harvesters, balers, seeders, and tillage implement drive shafts requiring a 20mm eccentric collar bearing.
Conveyors & Pillow Block Assemblies: Direct replacement insert for mounted housing units (P204, F204, FL204) used in material handling and packaging systems.
General Industrial Transmission: Designed for electric motor drives, textile machinery, and agricultural power transmission shafts operating under continuous rotation and vibration.
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