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Needle roller bearing with inner and outer ring, needle cage · SKF PNA 30/52
SKF PNA 30/52 needle roller bearing

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SKF PNA 30/52 needle roller bearing

Manufacturer part numberPNA 30/52Also known as: PNA30/52
Brand
SKF
Category
Bearings
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Description

SKF PNA 30/52 belongs to needle 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 PNA 30/52 and any equivalents.

For equipment designs where radial space is tight and radial loads must be supported with high rigidity, the SKF PNA series needle roller bearing is a compact solution. It combines an outer ring, an inner ring and a needle cage, making it suitable for machine tools, transmission equipment and precision mechanisms. MR Industrial Accessories supplies this series as part of its SKF bearing line.

The PNA part number follows a simple pattern: the prefix PNA, then two numbers separated by a slash. The first number gives the bore diameter and the second the outer diameter. For instance, PNA 12/28 has a 12 mm bore and a 28 mm outer diameter, while PNA 20/42 has a 20 mm bore and a 42 mm outer diameter. The examples in this series do not carry additional suffixes, though cage or seal variants may appear in other cases. Always rely on the published examples to interpret each code correctly.

These bearings are found in metalworking, food, textile and automotive industries. Typical uses include machine tool spindles, pumps, compressors, belt or chain transmission systems, and linear motion equipment. Wherever a low radial section is needed, a PNA bearing can support high radial loads in a compact envelope.

When selecting a PNA bearing, focus on the bore and outer diameters, as they determine load capacity and permissible speed. Check that the housing and shaft tolerances are appropriate and that lubrication suits the application. During assembly, precise alignment helps avoid unintended axial loads. If the bearing lacks an integrated seal, consider adding protection against external contaminants. The needle cage supports high speeds, but it requires adequate lubrication.

Needle roller bearings with the PNA designation are available from other brands under similar nomenclatures, but they are not always directly interchangeable. Tolerance, internal clearance and cage type can differ between manufacturers. When replacing a bearing, verify the critical dimensions and operating conditions. MR Industrial Accessories can advise on compatibility with other brands, but always confirm against the technical specifications.

To request a quote for an SKF PNA series needle roller bearing, send the complete part number by WhatsApp or email. The team replies promptly with the information you need and helps you identify the correct part for your equipment. MR Industrial Accessories also supplies other power transmission lines, so you can source related components from the same place.

Dimensions

Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.

Frequently asked questions

What does the PNA designation mean in a needle roller bearing?
PNA indicates a needle roller bearing with an inner and outer ring, of reduced radial section. The numbers after the prefix, separated by a slash, correspond to the bore diameter and the outer diameter. For example, PNA 12/28 has a 12 mm bore and a 28 mm outer diameter.
Where is an SKF PNA series needle roller bearing used?
It is used in applications where radial space is limited and high radial loads are required, such as machine tool spindles, pumps, compressors and transmission mechanisms. It is common in the metalworking and automotive industries.
How do I request a quote for a PNA bearing?
Send the complete bearing part number by WhatsApp or email to MR Industrial Accessories. The team replies promptly with the available information and helps you identify the correct part for your equipment. They can also advise on equivalents from other brands.
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