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The 51105 thrust ball bearing is a single-direction thrust bearing belonging to the 51100 (thin-section) series, designed exclusively for axial load transmission. It conforms to international standards, with a nominal inner diameter of 25mm, outer diameter of 42mm, and thickness of 11mm, featuring a compact flat structure ideal for space-constrained axial load scenarios.
It is engineered to carry pure axial loads (one direction only) and cannot withstand radial loads, making it highly efficient in applications where force acts along the shaft axis.
With a thin-walled design (minimal thickness relative to diameter), it occupies extremely limited axial space, fitting perfectly in equipment with strict size restrictions.
Composed of two precision-ground washers (shaft washer and housing washer) and a cage with steel balls, it ensures smooth rotation and low axial runout under rated loads.
Its separable structure (washers and cage assembly can be separated) allows straightforward mounting on shafts or housings.
Used in the tailstocks and tool turrets of lathes, milling machines, and grinders. It provides stable axial positioning for the spindle, ensuring precision during cutting or machining operations.
Applied in automotive transmission systems (such as gearbox end covers) and clutch release bearings. It bears the axial thrust generated during gear shifting and clutch engagement/disengagement.
Essential in small pumps, compressors, and textile machine tension rollers. Its compact size and axial load capacity meet the lightweight and efficient design needs of these devices.
Used in the rotating parts of precision instruments (like centrifuges), small electric motors, and household appliance components (e.g., air conditioner fan shafts). It delivers low-noise, high-precision axial support for small-scale rotating mechanisms.
The 51105 thrust ball bearing features a nominal inner diameter of 25mm, an outer diameter of 42mm, and a thickness of 11mm.
No. The 51105 thrust ball bearing is designed exclusively for axial load transmission in one direction and cannot carry radial loads.
It belongs to the 51100 thin-section series, which is characterized by a compact, flat structure and minimal thickness relative to its diameter.
It has a separable structure, allowing the shaft washer, housing washer, and cage assembly to be separated, which simplifies mounting on shafts or housings.
It is commonly used in transmission systems (such as gearbox end covers) and clutch release bearings to handle the axial thrust generated during shifting and clutch engagement.
