NTN 30317DU7GB tapered roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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How to read NTN 30317DU7GB
- 303Series
- Tapered roller bearings, 303 series. For the same bore, each series has a different outside diameter and width.
- 17Bore
- 85 mm bore: 17 × 5.
- DU7GBSuffix
- NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).
30317 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NTN 30317DU7GB bearing has a 85 mm bore, a 180 mm outside diameter and a 44.5 mm total width (85 x 180 x 44.5 mm).
NTN 30317DU7GB is a reference of tapered roller bearing, within Bearings. Request a quote for 30317DU7GB via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
NTN tapered roller bearings are components designed to support radial and axial loads in a single direction. Their tapered raceway and roller design allows linear contact that distributes the load better. They are used in applications with combined loads, such as gearboxes, wheel axles and agricultural machinery. MR Accesorios Industriales sells this NTN line with personalized service so you can find the exact reference your equipment needs.
The designation of this series combines numbers and letters that identify dimensions and variants. For example, in 30315DU7GB, 30316DU7GB and 30317DU7GB, the first digits indicate the size and the dimension series. The suffix DU7 refers to an internal modification, while GB indicates a specific manufacturing feature. Knowing these codes lets you order the correct reference without ambiguity.
These bearings are used in industries such as food, metallurgy and agriculture. In Argentina, they are commonly found in conveyor belts, mills, presses and road equipment. They are also present in gearboxes and transmission systems that require high load capacity. Their robustness makes them suitable for demanding environments with dust, vibration and variable loads.
To select the right bearing, take into account the radial and axial load, the rotation speed and the environmental conditions. Mounting must ensure precise alignment to prevent premature wear. Correct lubrication and proper sealing extend service life. If the equipment operates at high temperatures, choose lubricants with high thermal stability. If in doubt, consult our technical team.
NTN tapered roller bearings can be interchanged with those of other brands that follow the same standardized dimensions. If you have the part number of another brand, we can help you find the equivalent. Interchangeability depends on tolerances and internal design, so it is important to verify the application. MR Accesorios Industriales advises you so the replacement is safe and effective.
If you need a quote for these bearings, write to us on WhatsApp with the part number or the dimensions you are looking for. We will reply promptly with the information you need to move forward. At MR Accesorios Industriales we work so your process does not stop.
Dimensions
Boundary dimensions of the basic designation 30317 per ISO 355: 85 x 180 x 44.5 mm (d x D x T).
- Bore
- 85 mm
- Outside diameter (D)
- 180mm
- Total width (T)
- 44.5mm
Same size in SKF and other brands
Pages from other brands with the basic designation 30317: 85 x 180 x 44.5 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 30317DU7GB bearing?
- The NTN 30317DU7GB bearing has a 85 mm bore, a 180 mm outside diameter and a 44.5 mm total width (85 x 180 x 44.5 mm). These are the standardised boundary dimensions (ISO 355) of the basic designation 30317.
- What does the suffix DU7GB mean in these bearings?
- The suffix DU7GB indicates internal design and manufacturing variants specific to NTN. These letters and numbers may refer to modifications in heat treatment, internal clearance or sealing. To interpret each case correctly, consult us with the full part number.
- Can I replace a bearing from another brand with this NTN one?
- Yes, as long as the main dimensions and the load type match. Tapered roller bearings follow international standards, but it is essential to verify tolerances and angles. If you send us the original part number, we will indicate the appropriate NTN equivalent.
- How should I mount these bearings to avoid failures?
- Mounting requires cleanliness, precise alignment and correct adjustment of axial clearance. Use suitable tools and avoid direct blows on the rollers. Lubrication must be the one indicated for the application. If you need assistance, our technical team can guide you.