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NTN Tapered Roller Bearing Assembly: SET421, 3 1/4 in Bore, 5 1/4 in OD - Tapered Roller Bearing Assemblies
NTNTapered Roller Bearing Assemblies

NTN Tapered Roller Bearing Assembly: SET421, 3 1/4 in Bore, 5 1/4 in OD

The NTN Tapered Roller Bearing Assembly, model SET421 (MPN HM516449A/HM516410), is an inch-system bearing assembly with a 3 1/4 in bore, 5 1/4 in OD, and 1.562 in cone width. It features a carbon steel ring and a…

SKU 3G-OTH-108228

Also listed as: HM516449AHM516410 · HM516449A HM516410 · HM516449A-HM516410

Brand
NTN
Item
Tapered Roller Bearing Assembly: SET421, 3 1/4 in Bore, 5 1/4 in OD
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
HM516449A/HM516410
Bore
3 1/4 in
OD
5 1/4 in
Cone Wd
1.562 in
Cage Material
Pressed Steel
Ring Material
Carbon Steel
System of Measurement
Inch
Bearing Industry Number
SET421

Technical Documents

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

Product Description

The NTN Tapered Roller Bearing Assembly, model SET421 (MPN HM516449A/HM516410), is an inch-system bearing assembly with a 3 1/4 in bore, 5 1/4 in OD, and 1.562 in cone width. It features a carbon steel ring and a pressed steel cage.

Frequently Asked Questions

What is the NTN SET421 tapered roller bearing used for?

The NTN SET421 tapered roller bearing assembly handles combined radial and axial loads in industrial machinery, gearboxes, and conveyor systems. Its inch-system dimensions (3 1/4 in bore, 5 1/4 in OD) suit heavy-duty applications requiring precise shaft alignment and high load capacity.

What are the specifications of the NTN SET421 bearing?

The NTN SET421 bearing has a 3 1/4 in bore, 5 1/4 in OD, and 1.562 in cone width. It uses carbon steel rings and a pressed steel cage. The manufacturer part number is HM516449A/HM516410, and it is an inch-system assembly with industry number SET421.

Where to buy the NTN SET421 bearing worldwide?

You can source the NTN SET421 tapered roller bearing through 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 on this inch-system bearing assembly.

How to select the correct NTN tapered roller bearing for an application?

To select the correct NTN tapered roller bearing, match the bore (3 1/4 in), OD (5 1/4 in), and cone width (1.562 in) to your shaft and housing dimensions. Verify load ratings and speed limits from NTN specifications. The SET421 assembly uses a pressed steel cage suitable for moderate speeds.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
NTN Tapered Roller Bearing Assembly: SET422, 3 1/4 in Bore, 5 1/4 in OD, 1.562 in Cone Wd (MPN HM516449/HM516410)
NTN
NTN Tapered Roller Bearing Assembly: SET422, 3 1/4 in Bore, 5 1/4 in OD, 1.562 in Cone Wd (MPN HM516449/HM516410)
NTN Tapered Roller Bearing Assembly: SET415, 3 1/2 in Bore, 6 in OD, 1.562 in Cone Wd (MPN HM518445/HM518410)
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NTN Tapered Roller Bearing Assembly: SET415, 3 1/2 in Bore, 6 in OD, 1.562 in Cone Wd (MPN HM518445/HM518410)
NTN Tapered Roller Bearing Assembly: HM516442/HM516410, 3 in Bore, 5 1/4 in OD, 1.562 in Cone Wd
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NTN Tapered Roller Bearing Assembly: HM516442/HM516410, 3 in Bore, 5 1/4 in OD, 1.562 in Cone Wd
NTN Tapered Roller Bearing Assembly: SET412, 2 1/2 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212047/HM212011)
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NTN Tapered Roller Bearing Assembly: SET412, 2 1/2 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212047/HM212011)
NTN Tapered Roller Bearing Assembly: SET427, 2 5/8 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212049PW6/HM2#01)
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NTN Tapered Roller Bearing Assembly: SET427, 2 5/8 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212049PW6/HM2#01)
NTN Tapered Roller Bearing Assembly: SET413, 2 5/8 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212049/HM212011)
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NTN Tapered Roller Bearing Assembly: SET413, 2 5/8 in Bore, 4 13/16 in OD, 1.51 in Cone Wd (MPN HM212049/HM212011)

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