SSA208-25 Eccentric Locking Collar Insert Ball Bearing (1-9/16" Bore) ── 1-9/16" x 80mm x 43.7mm | Heavy-Duty Spherical Outer Ring Agricultural Unit | Replaces Fafnir RA109RRB GRA109RRB, SKF YET208-109W RA208-109, NTN AEL208-109, AMI KH208-25, Link-Belt WB225UL
Precision-engineered for heavy-duty agricultural machinery, power transmission shafts, conveyor systems, and industrial equipment, the SSA208-25 eccentric locking collar insert ball bearing features exact physical dimensions of 1-9/16" Bore/Shaft (39.688mm) x 80mm Outer Diameter (3.150") x 43.7mm Overall Width/Height (1.720"). Built with a spherical outer ring, an extended inner ring on one side with a heavy-duty eccentric locking collar, and high-efficiency contact rubber seals, pre-packed with wide-temperature synthetic grease to lock on smooth shafts firmly without shaft distortion. Direct cross-reference replacement for Fafnir / Torrington RA109RRB / GRA109RRB, SKF YET208-109W / RA208-109, NTN AEL208-109, AMI KH208-25, and Link-Belt WB225UL.
⚙️ Technical Specifications & Brand Interchange Matrix
Bearing Part Number: SSA208-25 / RA109RRB / YET208-109W (Eccentric Locking Collar Insert Bearing)
Precise Physical Dimensions:
Inner Diameter (Shaft Bore - d): 1-9/16 in (39.688 mm)
Outer Diameter (OD - D): 80 mm (3.150 in)
Overall Width / Height (B): 43.7 mm (1.720 in)
Major Brand Cross-References:
Fafnir / Torrington: RA109RRB, GRA109RRB
SKF: YET208-109W, RA208-109
NTN: AEL208-109
AMI: KH208-25
Link-Belt / Rexnord: WB225UL
⚡ Structural Advantages & Heavy-Duty Performance
Positive Eccentric Collar Locking mechanism: Heavy-duty eccentric locking collar provides maximum positive shaft locking force in a single rotation direction, preventing shaft slip and fretting corrosion.
Spherical Outer Ring Design: Precision ground spherical outer ring compensates for initial static alignment errors when mounted inside pillow blocks or flanged housings.
Superior Contact Rubber Sealing Barrier: High-efficiency contact rubber seals create a permanent defensive barrier against moisture, mud, slurry, and abrasive crop dust contamination.
Maintenance-Free Synthetic Pre-Lubrication: Factory pre-filled with high-grade wide-temperature agricultural synthetic grease, eliminating daily field servicing and lube washout.
🚜 Agricultural & Industrial Machinery Deployment
Agricultural Implements & Drives: Direct replacement insert bearing for combine harvesters, balers, seeders, disk harrows, and rotary tillers requiring a 1-9/16" bore unit.
Conveyor Systems & Material Handling: Essential heavy-duty insert bearing for grain augers, crop elevators, conveyor pulleys, and sorting machinery.
Industrial Drives & Pillow Block Units: Designed for demanding power transmission drives operating under heavy torque, mud, and dust exposure.
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