NTN 30315DU7GB tapered roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Decoding NTN 30315DU7GB
- 303Series
- Tapered roller bearings, 303 series. Series differ in outside diameter and width even when the bore is the same.
- 15Bore
- Bore 75 mm (15 × 5).
- DU7GBSuffix
- NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
30315 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 30315DU7GB measures 75 mm across the bore and 160 mm across the outside diameter; its total width is 40 mm (75 x 160 x 40 mm).
NTN 30315DU7GB 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 30315DU7GB and any equivalents.
NTN tapered roller bearings handle radial and axial loads in one direction. The tapered raceways and rollers create linear contact that spreads the load across the bearing. They suit gearboxes, wheel axles and agricultural machinery where combined loads occur. MR Industrial Accessories supplies this NTN line and helps you match the exact reference to your equipment.
The part number carries the key information. In 30315DU7GB, 30316DU7GB and 30317DU7GB, the leading digits give the size and dimension series. The DU7 suffix marks an internal modification, and GB identifies a specific manufacturing feature. Reading these codes correctly lets you order the right bearing the first time.
These bearings appear in food processing, metallurgy and agriculture. They are common in conveyor belts, mills, presses and road equipment, as well as in gearboxes and transmission systems that need high load capacity. Their construction handles dusty, vibrating environments with variable loads.
Selection depends on radial and axial load, rotation speed and operating conditions. Mounting must ensure precise alignment to avoid premature wear. Proper lubrication and sealing extend service life. For high-temperature operation, choose lubricants with high thermal stability. Our technical team can assist if you are unsure.
NTN tapered roller bearings interchange with other brands that follow the same standardized dimensions. If you have a part number from another brand, we can help you find the equivalent. Interchangeability depends on tolerances and internal design, so verify the application. MR Industrial Accessories advises you so the replacement is safe and effective.
To request a quote, send the part number or the dimensions you need via WhatsApp or email. We reply promptly with the information to keep your process moving.
Dimensions
75 x 160 x 40 mm (d x D x T): boundary dimensions for basic designation 30315, according to ISO 355.
- Bore
- 75 mm
- Outside diameter (D)
- 160mm
- Total width (T)
- 40mm
SKF and other brands, same size
Other brands' pages with basic designation 30315: 75 x 160 x 40 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 30315DU7GB bearing: what are its dimensions?
- NTN 30315DU7GB measures 75 mm across the bore and 160 mm across the outside diameter; its total width is 40 mm (75 x 160 x 40 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 30315.
- What does the DU7GB suffix mean on these bearings?
- DU7GB indicates internal design and manufacturing variants specific to NTN. These letters and numbers may refer to heat treatment, internal clearance or sealing modifications. Consult us with the full part number to interpret each case correctly.
- Can I replace a bearing from another brand with this NTN one?
- Yes, if the main dimensions and load type match. Tapered roller bearings follow international standards, but verify tolerances and angles. Send us the original part number and 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 match the application. Our technical team can guide you if needed.