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Needle roller bearing NSK NA49/28
- Manufacturer Part Number
- NA49/28
- Brand
- NSKBrand we market
- Category
- Bearings
- Subcategory
- Needle roller bearing
- Series
- NA
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Description
NSK NA49/28 is a needle roller bearing reference, within Bearings. Request a quote for NA49/28 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NSK NA series needle roller bearing is a radial bearing with a very small cross-section, designed to withstand high radial loads where axial and radial space is limited. It is used in machine tools, transmission equipment, pumps, compressors and similar applications. Its design with a steel cage and guided needles allows high load capacity and rigidity. MR Accesorios Industriales sells this line and advises you to choose the correct size for your application.
The NA series designation is read in blocks: the letters NA identify a needle roller bearing with an inner ring, and the numbers that follow indicate the bore diameter and the dimension series. For example, NA49/22, NA49/28 and NA49/32 correspond to the NA49 series with different shaft diameters; NA59/22, NA59/28 and NA59/32 to the NA59 series; and NA69/22, NA69/28 to the NA69 series. Suffixes, when they appear, indicate sealing, internal clearance or tolerance variants. If your part number has a suffix you don't recognize, send us the complete part number on WhatsApp and we'll quote it for you.
In Argentine industry, NA series needle roller bearings are found in gearboxes, textile machines, packaging equipment, vacuum pumps, air compressors and machine tools. They are also used in the automotive sector, in gearboxes and steering systems, and in road and agricultural equipment. Their ability to withstand high radial loads in a minimal space makes them ideal for compact designs where a ball bearing would not fit.
To select the correct bearing, take into account the shaft diameter, radial load and operating speed. Verify that the housing has the appropriate hardness and roughness, and that the shaft meets the recommended tolerance. Mounting is done with a press or controlled heating, never by striking the needles directly. Lubrication can be grease or oil depending on speed and environment; in contaminated applications, choose sealed variants. Alignment between shaft and housing is critical to avoid lateral stresses.
NA series needle roller bearings from different brands are interchangeable if the main dimensions and design type match. When comparing with other brands, check the bore diameter, outer diameter, width and load capacity. The NA48, NA49, NA59 and NA69 series follow dimensional standards that facilitate interchangeability. If you have another brand's part number, send it to us and we'll tell you the equivalent NSK reference to quote it.
MR Accesorios Industriales sells the NSK line and helps you find the needle roller bearing you need. Send us the part number or dimensions on WhatsApp and we'll quote it promptly. If you're looking for a sealed variant, special clearance or a particular size, write to us with the exact model and we'll source it for you.
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 NA designation mean in a needle roller bearing?
- NA indicates that it is a needle roller bearing with an inner ring. The following numbers define the bore diameter and the dimension series. For example, NA49/22 corresponds to the NA49 series with a specific shaft diameter.
- How do I choose between the NA48, NA49, NA59 and NA69 series?
- The choice depends on the shaft diameter, radial load and available space. Each series has different relationships between inner diameter, outer diameter and width. If you send us your application dimensions, we'll advise you on selecting the appropriate series.
- Are NSK NA series bearings interchangeable with other brands?
- Yes, as long as the main dimensions and design match. The NA series follow dimensional standards that allow interchangeability between manufacturers. If you have another brand's part number, we'll tell you the equivalent NSK reference.