SSA204-12 Stainless / Heavy-Duty Insert Ball Bearing (3/4" Bore) ── 3/4" x 47mm x 30.9mm | Eccentric Locking Collar Insert Bearing | Replaces Timken Fafnir RA012RRB SSRA012RRB, SKF YET 204-012, FYH SAA204-12, NTN AEL204-012, Peer FH204-12
Precision-engineered for agricultural machinery, food processing conveyors, packaging equipment, and light-duty industrial drive systems, the SSA204-12 heavy-duty / stainless insert ball bearing with eccentric locking collar features exact physical dimensions of 3/4" Bore (19.05mm) x 47mm Outer Diameter (1.850") x 30.9mm Inner Ring Width (1.217"). Designed with a narrow inner ring and an eccentric locking collar for positive, slip-free shaft locking in single-direction rotation, paired with heavy-duty multi-lip seals and pre-packed with wide-temperature grease to block out dust, dirt, and moisture. Direct cross-reference replacement for Fafnir / Timken RA012RRB / SSRA012RRB, SKF YET 204-012, FYH SAA204-12, NTN AEL204-012, and Peer FH204-12 / FH204-12G.
✦ Technical Specifications & Brand Interchange Matrix
Bearing Part Number: SSA204-12 / SAA204-12 (Eccentric Locking Collar Insert Bearing)
Precise Physical Dimensions:
Inner Diameter (Bore - d): 3/4 in (19.05 mm)
Outer Diameter (OD - D): 47 mm (1.850 in)
Inner Ring Width / Overall Depth (B): 30.9 mm (1.217 in)
Brand Cross-Reference Matrix:
Fafnir / Timken: RA012RRB (Standard) / SSRA012RRB (Stainless Steel)
SKF: YET 204-012
FYH: SAA204-12 / SSA204-12
NTN: AEL204-012
Peer Bearing: FH204-12 / FH204-12G
⚡ Structural Advantages & Heavy-Duty Performance
Positive Eccentric Collar Locking Mechanism: Features a self-locking eccentric collar that tightens firmly onto the shaft in the direction of rotation, eliminating shaft marring and preventing axial slip under load.
Spherical Outer Ring Profile: Precision-ground spherical outer diameter allows automatic self-alignment inside mounted bearing housings to compensate for initial shaft deflection or alignment errors.
Superior Contamination Protection: Equipped with dual heavy-duty contact seals and protective flinger plates to prevent water, mud, slurry, and fertilizer dust infiltration.
Corrosion Resistance & Food-Grade Options: Available in premium GCr15 chrome steel or AISI 440C stainless steel for high-humidity, agricultural washdown, or food-processing applications.
🚜 Agricultural & Industrial Machinery Deployment
Agricultural Equipment & Implements: Direct fit replacement for planters, hay rakes, small balers, grain augers, and rotary mowers requiring a 3/4" bore eccentric lock bearing.
Conveyors & Food Processing Machinery: Essential insert bearing for sorting tables, bottling lines, packaging equipment, and light-duty material handling conveyors.
HVAC & Industrial Drives: Designed for commercial fans, blowers, and light-duty mechanical drive shafts working under continuous rotation.
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