
NSK 5209A1DDU double row angular contact ball bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Double row angular contact ball bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
How to read NSK 5209A1DDU
- 52Series
- Double row angular contact ball bearings, 52 series. For the same bore, each series has a different outside diameter and width.
- 09Bore
- 45 mm bore: 09 × 5.
- A1DDUSuffix
- NSK suffix: it defines the variant (sealing, cage, internal clearance or other features).
5209 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
NSK 5209A1DDU is a reference of double row angular contact ball bearing, within Bearings. Request a quote for 5209A1DDU via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The double row angular contact ball bearing is a component designed to support combined radial and axial loads in both directions. Its two-row ball construction allows it to handle higher loads than a single row bearing, while maintaining the precision and rigidity required for demanding industrial applications. It is used in equipment where space is limited but high load capacity is required, such as pumps, compressors, gearboxes and machine tools. At MR Accesorios Industriales we quote the NSK part number you need.
The designation of this series combines numbers and letters that indicate key characteristics. For example, in 5209A1DDU, the numeric prefix identifies the size and series; the letter A indicates an internal design variant; the 1 may refer to a dimensional or clearance modification; and the DDU suffix indicates double-lip contact sealing on both sides. Knowing these codes allows you to order exactly the bearing your equipment needs. If you have doubts, send us the full part number and we will advise you.
This type of bearing is used in industries such as food, chemical, petrochemical and process industries, where centrifugal pumps, screw compressors and gearboxes need to withstand combined loads with high rigidity. It also appears in machine tool spindles and power transmission equipment. In Argentina, it is common in continuous production plants, where reliability and durability are critical. MR Accesorios Industriales sells this line to supply maintenance and industrial projects.
To select correctly, take into account the radial and axial load it must withstand, the rotation speed and the environmental conditions. The DDU seal protects against contaminants and retains lubricant, ideal for environments with dust or humidity. Internal clearance and lubrication must be suitable to prevent overheating. During mounting, ensure precise alignment between shaft and housing, and apply force only on the appropriate ring. Careful installation extends the bearing's service life.
If you need to replace a bearing from another brand, we can help you find the equivalent. Double row angular contact bearings usually have standardized dimensions, which makes interchangeability between manufacturers easier. Send us the original part number and we will tell you the equivalent NSK reference. We work with each manufacturer's actual nomenclature. Ask us on WhatsApp and we will reply shortly.
To request a quote for the bearing you need, send us the full part number by WhatsApp. At MR Accesorios Industriales we will send you the quote and coordinate the best way for you to receive it. If you have an unidentified part, we can also help you identify it. Write to us and we will assist you shortly.
Dimensions
- Bore
- 45mm
Frequently Asked Questions
- What does the DDU suffix mean on an NSK bearing?
- The DDU suffix indicates that the bearing has double-lip contact seals on both sides. This improves protection against external contaminants and helps retain lubricant, extending service life in demanding environments.
- How do I request a quote for an NSK double row bearing?
- Write to us on WhatsApp with the full part number of the bearing you need. We will send you the quote shortly and coordinate delivery or pickup at our facilities.
- Can I replace a bearing from another brand with an NSK one?
- Yes, in many cases it is possible if the dimensions and load capacity match. Send us the original part number and we will tell you the equivalent NSK reference so you can compare. Ask us on WhatsApp.

