NTN 30309U Tapered Roller Bearing 45 × 100 × 27.25 mm

Tapered Roller Bearing

RFQ

In stock

EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Tapered Roller Bearing
Bore: 45 mm
Outer Ø: 100 mm
Width: 27.25 mm

Overview

NTN 30309U Tapered Roller Bearing uses tapered rollers and raceways to handle combined radial and axial loads. It is commonly used in wheel hubs, gearboxes, industrial axles, and heavy equipment where shock load capacity and rigidity are required.

The inner ring, outer ring, tapered rollers, and cage are designed so their cone lines converge at a common point. A single-row bearing supports axial load in one direction, while paired mounting supports bidirectional axial load and preload settings.

Key features

Handles combined radial and axial loads
High rigidity and shock-load capability
Adjustable preload or endplay
Separable design for mounting and inspection

Typical applications

Automotive and industrial wheel hubs
Gearboxes and differentials
Construction and agricultural axles
Conveyors and rolling equipment

Selection guidance

Consider load ratio, mounting direction, preload/endplay, lubrication, and the paired bearing arrangement.

Symbol	Value	Description
≈m	1.01 kg	Weight
Cr	123 kN	Basic dynamic load rating, radial
C_0r	126 kN	Basic static load rating, radial
n_G	4000 rpm	Limiting speed (grease)
n_O	5300 rpm	Limiting speed (oil-air)

Symbol	Value	Description
d	45 mm	Bore diameter
D	100 mm	Outside diameter
B	27.25 mm	Width

Symbol	Value	Description
T_min	-40 °C	Operating temperature min.
T_max	120 °C	Operating temperature max.

Code	Description
P0	Tolerance class
Sheet steel cage	Cage

Also searched as

The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page: