NTN 30319DU tapered roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
How to read NTN 30319DU
- 303Series
- Tapered roller bearings, 303 series. For the same bore, each series has a different outside diameter and width.
- 19Bore
- 95 mm bore: 19 × 5.
- DUSuffix
- NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).
30319 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NTN 30319DU bearing has a 95 mm bore, a 200 mm outside diameter and a 49.5 mm total width (95 x 200 x 49.5 mm).
NTN 30319DU is a reference of tapered roller bearing, within Bearings. Request a quote for 30319DU via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
NTN DU series tapered roller bearings are separable bearings that support radial and axial loads in one direction. Their tapered raceway design and guided rollers allow linear contact that distributes load better than a ball bearing. They are used in applications with combined forces where rigidity is required, such as transmission cases, gear reducers, wheel hubs and motion equipment. MR Accesorios Industriales sells this series in Buenos Aires, Argentina, and quotes it on WhatsApp.
The DU series designation is read as follows: the initial numbers indicate the size and the dimensional series; for example, 30318DU and 30319DU correspond to single-row tapered roller bearings. The DU suffix identifies a design variant specific to NTN, generally associated with the treatment or the cage. To correctly interpret each code, note that the first two digits usually indicate the diameter series and the following ones the size. If you need to confirm the exact equivalent, send us the complete code on WhatsApp and we will quote it.
In Argentine industry, tapered roller bearings are found in speed reducers, gearboxes, transmission shafts, mining equipment, cement plants and food plants. They also appear in wheel hubs of commercial vehicles and in agricultural machinery, where combined loads and shocks are frequent. The NTN DU series is chosen when a robust bearing is needed, with good load capacity and the possibility of adjustment. MR Accesorios Industriales supplies this line for replacement and maintenance in Buenos Aires, Argentina and the rest of the country.
To select a tapered roller bearing, consider the radial and axial load, the rotation speed and the type of lubrication. These bearings are usually mounted in pairs, facing each other, to absorb loads in both directions; internal clearance is adjusted with shims or nuts. It is important to verify the alignment of the shaft and the housing, because they are sensitive to misalignment. Proper sealing and lubrication extend service life. If you have doubts about mounting, ask us and we will advise you.
Tapered roller bearings are manufactured under international standards, which facilitates interchangeability between brands. If the customer brings a code from another brand, we can offer the NTN equivalent or one from another company that meets the same dimensions and load capacity. It is always advisable to verify the complete designation and the tolerances. At MR Accesorios Industriales we help you find the correct equivalent for your application.
To request a quote for your NTN DU series tapered roller bearing, send us the complete code on WhatsApp. If you don't have it at hand, send us the main dimensions or a photo of the part and we will tell you the reference you need. At MR Accesorios Industriales we work to give you a fast and accurate response. Write to us and we will quote you shortly.
Dimensions
Boundary dimensions of the basic designation 30319 per ISO 355: 95 x 200 x 49.5 mm (d x D x T).
- Bore
- 95 mm
- Outside diameter (D)
- 200mm
- Total width (T)
- 49.5mm
Same size in SKF and other brands
Pages from other brands with the basic designation 30319: 95 x 200 x 49.5 mm (d x D x T) per ISO 355.
They share the boundary dimensions set by ISO 355, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the NTN 30319DU bearing?
- The NTN 30319DU bearing has a 95 mm bore, a 200 mm outside diameter and a 49.5 mm total width (95 x 200 x 49.5 mm). These are the standardised boundary dimensions (ISO 355) of the basic designation 30319.
- What does the DU suffix mean in NTN bearings?
- The DU suffix identifies a design variant within the NTN line. It may refer to the heat treatment, the type of cage or a dimensional modification. To know exactly what it means in your code, ask us with the complete designation.
- How do I choose between a tapered roller bearing and a ball bearing?
- Tapered rollers support combined radial and axial loads much greater than ball bearings. They are chosen when there are significant forces and rigidity is required. If the load is light and only radial, a ball bearing may be sufficient.
- Can I replace a bearing from another brand with an NTN one?
- Yes, as long as the main dimensions and load capacity match. International standards allow interchangeability. Send us the code of the original brand and we will quote the NTN equivalent or the alternative that best suits you.