NTN Tapered Roller Bearing Assembly: 3977/3920, 2 23/64 in Bore, 4 7/16 in OD
The NTN Tapered Roller Bearing Assembly, model 3977/3920, is an inch-system tapered roller bearing assembly featuring a 2 23/64 in bore, 4 7/16 in OD, and 1.183 in cone width. It is constructed with a carbon steel…
SKU 3G-OTH-110214
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Product Description
The NTN Tapered Roller Bearing Assembly, model 3977/3920, is an inch-system tapered roller bearing assembly featuring a 2 23/64 in bore, 4 7/16 in OD, and 1.183 in cone width. It is constructed with a carbon steel ring and a pressed steel cage, as specified by the manufacturer.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the NTN 3977/3920 tapered roller bearing used for?
The NTN 3977/3920 tapered roller bearing assembly is used in industrial machinery and automotive drivetrains to support combined radial and axial loads. Its inch-system dimensions suit legacy equipment and heavy-duty applications such as gearboxes, conveyors, and axle assemblies.
What are the specifications of the NTN 3977/3920 bearing?
The NTN 3977/3920 is an inch-system tapered roller bearing assembly with a 2 23/64 in bore, 4 7/16 in OD, and 1.183 in cone width. It features a carbon steel ring and pressed steel cage. The manufacturer part number and bearing industry number are both 3977/3920.
Where to buy the NTN 3977/3920 bearing worldwide?
You can source the NTN 3977/3920 tapered roller bearing assembly worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct NTN tapered roller bearing for an application?
To select the correct NTN tapered roller bearing, match the bore, OD, and cone width to your shaft and housing dimensions. Consider load ratings and operating speed. For the 3977/3920, verify the inch-system measurements and confirm the carbon steel ring and pressed steel cage suit your environment.
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Common applications for NTNNTN Products
3G Electric supplies NTN tapered roller bearing assemblies. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.










