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Tapered roller bearing NSK HR 30311 DJ
- Manufacturer Part Number
- HR 30311 DJ
- Brand
- NSKBrand we market
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Description
NSK HR 30311 DJ is a tapered roller bearing reference, within Bearings. Request a quote for HR 30311 DJ via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NSK HR DJ series tapered roller bearing is a component designed to withstand combined radial and axial loads. Its tapered geometry allows linear contact that distributes loads better, which is why it is used in applications with significant stresses and controlled misalignment. It is a common choice in transmissions, gear reducers and industrial machinery that requires high load capacity and rigidity.
The designation of these bearings is read as follows: HR indicates the high load capacity series, the number that follows (for example, 30305, 30306, 30307) identifies the size and the dimensional series, and the DJ suffix indicates a specific design variant within the family. In the examples, HR 30305 DJ, HR 30306 DJ and HR 30307 DJ share the HR prefix and the DJ suffix, changing the number that defines the dimensions. Knowing this logic helps you order the correct part number.
In Argentine industry, these bearings are used in gear reducer boxes, drive shafts, road machinery, mining equipment, mills and conveyors. They also appear in the agro-industrial sector, in seeders and harvesters, and in railway applications. Their ability to withstand combined loads makes them suitable for assemblies where the shaft must be well guided and transmit significant stresses without deformation.
To select the right bearing, take into account the radial and axial load it will withstand, the rotational speed and the environmental conditions. Mounting requires careful alignment and correct adjustment of axial clearance, which is usually set with lock nuts or shims. Lubrication can be with grease or oil, depending on the duty cycle. Sealing is key to retaining the lubricant and preventing the entry of contaminants, so evaluating seals or protective covers is recommended.
If you need to replace a bearing from another brand, the most practical approach is to compare the main dimensions (bore, outer diameter and width) and the design type. Tapered roller bearings are interchangeable between manufacturers if those measurements and the load capacity match. For a safe equivalence, send us the original part number or the shaft and housing measurements, and we will tell you the equivalent NSK reference.
At MR Accesorios Industriales we sell the NSK brand and quote the exact part number or size you need. If you are looking for an HR DJ series tapered roller bearing, write to us on WhatsApp with the part number or dimensions and we will reply shortly. We can also advise you on mounting and lubrication so that the application runs smoothly.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the DJ suffix mean in NSK HR bearings?
- The DJ suffix indicates a design variant within the HR series. It may refer to a specific cage design, tolerances or heat treatment. To know exactly what it means for your application, consult us with the full part number and we will advise you.
- How do I choose the right tapered roller bearing for my machine?
- You need to know the radial and axial load, the speed and the available space. With that data and the shaft and housing measurements, we help you select the correct part number. If you have the old bearing, send us its dimensions or reference.
- Do you ship anywhere in the country?
- Yes, we coordinate shipping to any point in Argentina. Once you confirm the part number or size, we quote and agree on the delivery method. Write to us on WhatsApp and we will reply shortly.

