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NTN Tapered Roller Bearing Cup: 45.618 mm Bore, 3 17/64 in OD, 0.75 in Cup Wd - Tapered Roller Bearing Cups
NTNTapered Roller Bearing Cups

NTN Tapered Roller Bearing Cup: 45.618 mm Bore, 3 17/64 in OD, 0.75 in Cup Wd

The NTN Tapered Roller Bearing Cup (SKU 798AL3, MPN 25521) is an inch-system cup made from alloy steel with a 45.618 mm bore, a 3 17/64 in OD, a 0.75 in cup width, and a 19.05 mm overall width. It is compatible with…

SKU 3G-OTH-112640

Brand
NTN
Item
Tapered Roller Bearing Cup: 45.618 mm Bore, 3 17/64 in OD, 0.75 in Cup Wd
Category
Tapered Roller Bearing Cups
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Technical Specifications

NTN
Manufacturer Part Number
25521
OD
3 17/64 in
Cup Wd
0.75 in
Overall Wd
19.05 mm
Ring Material
Alloy Steel
System of Measurement
Inch
Compatible Cone Manufacturer Part Number
4T-25590,4T-25581, 4T-25580, 4T-25577, 4T-25572, 4T-25578
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NTN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NTN Tapered Roller Bearing Cup (SKU 798AL3, MPN 25521) is an inch-system cup made from alloy steel with a 45.618 mm bore, a 3 17/64 in OD, a 0.75 in cup width, and a 19.05 mm overall width. It is compatible with NTN cones 4T-25590, 4T-25581, 4T-25580, 4T-25577, 4T-25572, and 4T-25578.

Frequently Asked Questions

What is the NTN 25521 tapered roller bearing cup used for?

The NTN 25521 cup is used in inch-system tapered roller bearing assemblies to support combined radial and axial loads in industrial equipment such as gearboxes, conveyors, and pumps. It pairs with NTN cones like 4T-25580 to form a complete bearing set.

What are the specifications of the NTN 25521 bearing cup?

The NTN 25521 cup has a 45.618 mm bore, a 3 17/64 in OD, a 0.75 in cup width, and a 19.05 mm overall width. It is made of alloy steel and uses inch-system measurement. Compatible cones include NTN 4T-25590, 4T-25581, 4T-25580, 4T-25577, 4T-25572, and 4T-25578.

Where to buy NTN 25521 bearing cup worldwide?

3G Electric supplies the NTN 25521 tapered roller bearing cup to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this inch-system alloy steel cup.

How to select the correct cone for the NTN 25521 cup?

To select the correct cone for the NTN 25521 cup, use one of the compatible NTN cone part numbers: 4T-25590, 4T-25581, 4T-25580, 4T-25577, 4T-25572, or 4T-25578. Always verify the cup bore and cone OD match the application's shaft and housing dimensions.

Used in

Common applications for NTN
Automotive driveline — NTN tapered roller bearing assemblies (e.g., 4T-30303) for differential and wheel hub applications
Conveyor systems — NTN 4-bolt flange bearings (e.g., UCF211-200D1) for idler rollers and take-up units
Machine tool spindles — NTN duplex angular contact bearings (e.g., ML7006CVDUJ74S) for high-speed precision rotation
Industrial fans — NTN high-temperature radial ball bearings (e.g., 6004FT150) for oven and dryer exhaust systems
Pump drives — NTN radial ball bearings (e.g., 6008LLBC3/L627) for electric motor and pump shaft support
Agricultural equipment — NTN tapered roller bearing cones (e.g., LM29748L) for gearbox and PTO shaft assemblies

NTN Products

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.

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