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NTN Tapered Roller Bearing Cone: 399A, 2 11/16 in Bore, 4.13 in OD, 0.866 in Cone Wd - Tapered Roller Bearing Cones
NTNTapered Roller Bearing Cones

NTN Tapered Roller Bearing Cone: 399A, 2 11/16 in Bore, 4.13 in OD, 0.866 in Cone Wd

The NTN 399A is a tapered roller bearing cone with a 2 11/16 in bore, 4.13 in OD, and 0.866 in cone width. It features a tapered bore type, chrome steel cage, and carbon steel ring material. This inch-system…

SKU 3G-OTH-110467

Also listed as: 399 A · 399-A

Brand
NTN
Item
Tapered Roller Bearing Cone: 399A, 2 11/16 in Bore, 4.13 in OD, 0.866 in Cone Wd
Category
Tapered Roller Bearing Cones
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

NTN
Manufacturer Part Number
399A
Type
399A
Bore
2 11/16 in
OD
4.13 in
Cone Wd
0.866 in
Bore Type
Tapered
Cage Material
Chrome Steel
Ring Material
Carbon Steel
System of Measurement
Inch
Bearing Industry Number
399A
Compatible Cup Manufacturer Part Number
394A

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

Product Description

The NTN 399A is a tapered roller bearing cone with a 2 11/16 in bore, 4.13 in OD, and 0.866 in cone width. It features a tapered bore type, chrome steel cage, and carbon steel ring material. This inch-system component is compatible with cup manufacturer part number 394A.

Frequently Asked Questions

What is the NTN 399A tapered roller bearing cone used for?

The NTN 399A tapered roller bearing cone is used in industrial machinery and automotive applications that require support for combined radial and axial loads. It is commonly found in gearboxes, conveyor systems, and wheel hubs. The cone works with a compatible cup (394A) to form a complete bearing assembly.

What are the specifications of the NTN 399A bearing cone?

The NTN 399A has a 2 11/16 in bore, 4.13 in OD, and 0.866 in cone width. It uses a tapered bore type, chrome steel cage, and carbon steel ring material. This inch-system component is compatible with cup part number 394A. The bearing industry number is 399A.

Where to buy the NTN 399A bearing cone worldwide?

You can source the NTN 399A tapered roller bearing cone from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. We supply genuine NTN components for industrial applications.

How to select the correct cup for the NTN 399A cone?

To select the correct cup for the NTN 399A cone, use the compatible cup manufacturer part number 394A. Ensure the cup matches the inch-system dimensions and tapered roller design. Always verify the bore size, OD, and width against your assembly requirements. Consult NTN specifications for proper fit and load ratings.

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

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Cross-referenced by specification & description
NTN Tapered Roller Bearing Cone: 39578, 2 1/8 in Bore, 3.98 in OD, 1.187 in Cone Wd, 39578
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NTN Tapered Roller Bearing Cone: 3980, 2 3/8 in Bore, 4.17 in OD, 1.183 in Cone Wd, 3980
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