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NTN tapered roller bearing · NTN 32308U2FD
NTN 32308U2FD tapered roller bearing

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NTN 32308U2FD tapered roller bearing

Manufacturer part number32308U2FDSize: 40 x 90 x 35.25 mm (d x D x T)More 40 x 90 x 35.25 mm bearings →NTN 323 series size chart →
Brand
NTN
Category
Bearings
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Decoding NTN 32308U2FD

323Series
Tapered roller bearings, 323 series. Series differ in outside diameter and width even when the bore is the same.
08Bore
Bore 40 mm (08 × 5).
U2FDSuffix
NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.

32308 is the standard ISO basic designation, which sets the bearing type, series and bore.

Description

NTN 32308U2FD measures 40 mm across the bore and 90 mm across the outside diameter; its total width is 35.25 mm (40 x 90 x 35.25 mm).

NTN 32308U2FD belongs to tapered roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 32308U2FD and any equivalents.

NTN tapered roller bearings handle radial and axial loads at the same time. The cone and cup arrangement creates a linear contact path that spreads stress across the rolling surfaces. You will find them in gearboxes, wheel axles and other equipment where power transmission must be precise. MR Industrial Accessories LLC quotes these bearings by part number for customers in the United States and Latin America.

Codes such as 32308U2FD and 32312U2FD follow a structure worth understanding. The 323 series identifies single-row tapered rollers with standardized dimensions. The U2 suffix points to a design or treatment variant, and FD typically relates to sealing or lubrication. For a reliable reading of any code, check the manufacturer's catalog or ask our team to confirm the details.

These bearings appear in mining, cement, steel, food processing and transport equipment. Typical positions include gearboxes, conveyor rollers, machine tool spindles and heavy vehicle axles. Because they take combined loads, they suit helical gear arrangements and setups with tilting moments. MR Industrial Accessories LLC serves plants and workshops across the United States and several Latin American countries.

Selection starts with radial and axial load, rotation speed and the operating environment. Mounting calls for accurate alignment and correct adjustment of axial clearance, usually through lock nuts or shims. Grease or oil lubrication is possible, and the sealing method should match contamination and temperature levels. Poor mounting practice reduces service life, so follow the manufacturer's instructions.

Tapered roller bearings from different brands can be interchanged when the main dimensions and contact angle align. Before replacing a part, verify the complete code and tolerances. If you only have another brand's code, we can identify a compatible equivalent. We can also quote the exact size you need. Send the code or dimensions by WhatsApp or email and our team will reply promptly.

Dimensions

40 x 90 x 35.25 mm (d x D x T): boundary dimensions for basic designation 32308, according to ISO 355.

Bore
40mm
Outside diameter (D)
90mm
Total width (T)
35.25mm

SKF and other brands, same size

Other brands' pages with basic designation 32308: 40 x 90 x 35.25 mm (d x D x T) per ISO 355.

What they share are the ISO 355 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.

Frequently asked questions

NTN 32308U2FD bearing: what are its dimensions?
NTN 32308U2FD measures 40 mm across the bore and 90 mm across the outside diameter; its total width is 35.25 mm (40 x 90 x 35.25 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 32308.
What does the U2 suffix indicate on an NTN bearing?
The U2 suffix marks a specific design variant in the series. It may indicate a special heat treatment or a particular component design. Ask our team to confirm the exact meaning when you request a quote.
How do I select the correct tapered roller bearing?
Gather the radial and axial load, speed, available space and lubrication conditions. With that information we can match the right code. If you have the original code, send it and we will quote the exact part.
Can you suggest an equivalent if I have a code from another brand?
Yes. Tapered roller bearings are interchangeable when the main dimensions and contact angle match. Share the complete code and tolerances, and we will identify a compatible option for you.
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