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A-B51109-AI Bearing, Thrust
A-B51109-AI Bearing, Thrust
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One New Aftermarket Replacement Thrust Bearing - 51109 Series (A&I Part A-B51109-AI)
This single-direction thrust ball bearing (industry standard 51109) handles axial loads in rotating assemblies found across agricultural equipment, pumps, machine tools, and other machinery. The three-piece separable design -- consisting of a shaft washer, housing washer, and ball-and-cage assembly -- allows for straightforward installation, removal, and maintenance inspection. Designed to carry thrust loads at moderate speeds, this bearing type accommodates unidirectional axial load only; radial loads must be supported separately.
Specifications
- Bearing Type: Single-direction thrust ball bearing
- Series: 51100 Metric (51109)
- Bore (ID): 45 mm
- Outside Diameter (OD): 65 mm
- Width (Height): 14 mm
- Construction: Open style, 3-piece separable design
- Retainer: Steel cage
- Material: Bearing steel
- Load Direction: Axial (single direction) only -- radial load not permitted
Replaces Part Number(s):
A-B51109-AI
Aftermarket Interchange Numbers
51109 (NTN, SKF, KOYO, Rollway, and other manufacturers using the 51100 metric series)
New aftermarket replacement part - not remanufactured, not used.



