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NTN 390/394A Tapered Roller Bearing Assembly - Tapered Roller Bearing Assemblies
NTNTapered Roller Bearing Assemblies

NTN 390/394A Tapered Roller Bearing Assembly

The NTN Tapered Roller Bearing Assembly, model 390/394A, is an inch-system bearing with a 2 1/4 in bore, 4 21/64 in OD, and 0.866 in cone width. It features a carbon steel ring and a pressed steel cage, designed for…

SKU 3G-OTH-109974

Also listed as: 390394A · 390 394A · 390-394A

Brand
NTN
Item
390/394A Tapered Roller Bearing Assembly
Category
Tapered Roller Bearing Assemblies
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

NTN
Manufacturer Part Number
390/394A
Bore
2 1/4 in
OD
4 21/64 in
Cone Wd
0.866 in
Cage Material
Pressed Steel
Ring Material
Carbon Steel
System of Measurement
Inch
Bearing Industry Number
390/394A

Technical Documents

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NTN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NTN Tapered Roller Bearing Assembly, model 390/394A, is an inch-system bearing with a 2 1/4 in bore, 4 21/64 in OD, and 0.866 in cone width. It features a carbon steel ring and a pressed steel cage, designed for industrial applications requiring tapered roller bearing assemblies.

Frequently Asked Questions

What is the NTN 390/394A tapered roller bearing used for?

The NTN 390/394A tapered roller bearing assembly is used in industrial machinery that must support combined radial and axial loads, such as gearboxes, conveyors, and automotive drivetrains. Its inch-system dimensions and pressed steel cage make it suitable for moderate-speed applications requiring reliable load distribution.

What are the specifications of the NTN 390/394A bearing?

The NTN 390/394A is an inch-system tapered roller bearing assembly with a 2 1/4 in bore, 4 21/64 in OD, and 0.866 in cone width. It has a carbon steel ring and a pressed steel cage. The manufacturer part number and bearing industry number are both 390/394A.

Where to buy the NTN 390/394A bearing worldwide?

3G Electric supplies the NTN 390/394A tapered roller bearing assembly worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this bearing to any country.

How to install the NTN 390/394A tapered roller bearing?

To install the NTN 390/394A, clean the shaft and housing, apply a light oil film, and press the cone onto the shaft using a press tool against the inner ring face. Ensure the cup is seated squarely in the housing. Adjust axial clearance per manufacturer guidelines to prevent overheating or excessive play.

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 assemblies. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Inch-system tapered roller bearing assembly with 2 1/8 in bore, 4 7/16 in OD, and 1.187 in cone width. Constructed with carbon steel rings and a pressed steel cage. Used in industrial machinery, gearboxes, and conveyor systems to handle combined radial and axial loads
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Inch-system tapered roller bearing assembly with 2 1/8 in bore, 4 7/16 in OD, and 1.187 in cone width. Constructed with carbon steel rings and a pressed steel cage. Used in industrial machinery, gearboxes, and conveyor systems to handle combined radial and axial loads
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Inch-system tapered roller bearing assembly with carbon steel rings and pressed steel cage. Bore 2-5/8 in, OD 4-7/16 in, cone width 1.187 in. Supports combined radial and axial loads in industrial machinery such as gearboxes and conveyor systems
Inch-system tapered roller bearing assembly with 1-3/4 in bore, 3-21/32 in OD, and 1.193 in cone width. Carbon steel rings and pressed steel cage. Handles combined radial and axial loads in machinery, gearboxes, and conveyor systems
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