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51311
The 51311 is a thrust ball bearing designed to support primarily axial loads in one direction. With a bore diameter of 55 mm and belonging to the 513 series, this bearing uses ball elements positioned between hardened raceways to accommodate thrust forces with minimal friction.
Thrust ball bearings are commonly used in automotive transmissions, machine tool spindles, vertical pump assemblies, and rotating platforms where axial loads predominate. They require proper mounting on flat, rigid surfaces and are not suitable for combined radial-axial load applications.
Interchange / cross reference
RIV MP-55
Cross-references are provided as a guide — verify dimensions and fit for your application.
For large orders ($2000+) please inquire by email.
Measurement Type
Metric
Inner Diameter (ID)
55 mm
Outside Diameter (OD)
105 mm
Width
35 mm
Sealing
Open
Precision Class
ISO P0
Series
513
Bearing Type
Thrust ball bearing
Other Features
Single Direction | Thrust Ball Bearing | Metric Series
Component
Assembly
Weight (kg)
1.3
Basic Number
51311
UNSPSC
31171552
