NTN Tapered Roller Bearing Cup: 3 17/64 in Bore, 3 5/8 in OD, 0.781 in Cup Wd
The NTN Tapered Roller Bearing Cup (SKU 55PX37, MPN 28521) is an inch-system cup with a 3 17/64 in bore, 3 5/8 in OD, and 0.781 in cup width. It is made of alloy steel and is compatible with cone manufacturer part…
SKU 3G-OTH-111834
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Product Description
The NTN Tapered Roller Bearing Cup (SKU 55PX37, MPN 28521) is an inch-system cup with a 3 17/64 in bore, 3 5/8 in OD, and 0.781 in cup width. It is made of alloy steel and is compatible with cone manufacturer part number 28580.
Frequently Asked Questions
What is the NTN 28521 tapered roller bearing cup used for?
The NTN 28521 cup is used in tapered roller bearing assemblies to support radial and axial loads in industrial equipment such as gearboxes, conveyors, and heavy machinery. It pairs with cone 28580 to form a complete bearing set for rotating shaft applications.
What are the specifications of the NTN 28521 tapered roller bearing cup?
The NTN 28521 cup has a 3 17/64 in bore, 3 5/8 in OD, and 0.781 in cup width. It is made of alloy steel, uses inch-system measurement, and is compatible with cone part number 28580. The overall width is also 0.781 in.
Where to buy the NTN 28521 tapered roller bearing cup worldwide?
3G Electric supplies the NTN 28521 tapered roller bearing cup worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct cone for the NTN 28521 bearing cup?
Select the NTN 28580 cone as the matching component for the 28521 cup. Ensure the cone bore and width align with your shaft and housing dimensions. Always verify the manufacturer part numbers to guarantee proper fit and load capacity in your application.
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3G Electric supplies NTN tapered roller bearing cups. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.










