SKF 3308 ATN9/C3 double row angular contact ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Double row angular contact ball bearings
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Since 1945 · Martínez, Buenos Aires, Argentina
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How to read SKF 3308 ATN9/C3
- 33Series
- Double row angular contact ball bearings, 33 series. For the same bore, each series has a different outside diameter and width.
- 08Bore
- 40 mm bore: 08 × 5.
- ATN9/C3Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
3308 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 3308 ATN9/C3 bearing has a 40 mm bore, a 90 mm outside diameter and a 36.5 mm width (40 x 90 x 36.5 mm).
SKF 3308 ATN9/C3 is a reference of double row angular contact ball bearing, within Bearings. Request a quote for 3308 ATN9/C3 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF double row angular contact bearings are components designed to support radial and axial loads in both directions. Their design with two rows of balls and a contact angle allows superior performance in applications requiring high rigidity and precision. They are ideal for equipment where space is limited and high load capacity is needed, such as in pumps, compressors and machine tools. At MR Accesorios Industriales we supply this SKF line, a brand we sell, to provide reliable solutions to Argentine industry.
The designation of these bearings follows a scheme that combines the series number with suffixes indicating specific characteristics. For example, in 3202 ATN9/C3, the 3202 identifies the size and series, while ATN9 indicates a design with a polyamide cage and a particular contact angle. The suffix /C3 indicates an internal radial clearance greater than standard, suitable for applications with elevated temperatures or fits requiring additional clearance. Other examples such as 3205 ATN9/C2 show a reduced clearance, ideal for assemblies demanding higher precision. Knowing these codes facilitates correct selection.
These bearings are used in a wide variety of industries in Argentina, including food, chemical, petrochemical and manufacturing. They are common in centrifugal pumps, screw compressors, industrial fans, machine tools and power transmission equipment. Their ability to support combined loads and their rigidity make them suitable for applications requiring high precision and reliability, such as in milling machine spindles or electric motor shafts. At MR Accesorios Industriales we supply these bearings to maintain the operational continuity of plants and workshops.
To correctly select a double row angular contact bearing, it is essential to consider the magnitude and direction of loads, rotation speed and environmental conditions. Sealing is key: in dusty or humid environments, it is recommended to choose variants with seals or shields. Internal clearance should be chosen according to the application; a C3 clearance is common in electric motors, while a C2 is preferred in precision spindles. During assembly, ensure careful alignment and adequate lubrication, as these bearings are sensitive to installation errors that can reduce their service life.
There are equivalent bearings from other brands on the market that can be interchanged, but it is crucial to verify dimensions and tolerances. Suffix codes may vary between manufacturers, so equivalence tables should always be consulted. SKF is a global reference and its products are compatible with many applications, but interchangeability must be technically validated. At MR Accesorios Industriales we can advise you on the best option for your equipment and needs, without compromising performance.
If you need to replace a double row angular contact bearing, do not hesitate to contact us. Send the complete code via WhatsApp to MR Accesorios Industriales and we will quote you promptly. We have a technical team ready to help you choose the right SKF bearing for your application. Your inquiry is welcome and allows us to offer you the most efficient solution.
Dimensions
Boundary dimensions of the basic designation 3308 per ISO 15: 40 x 90 x 36.5 mm (d x D x B).
- Bore
- 40mm
- Outside diameter (D)
- 90mm
- Width (B)
- 36.5mm
Frequently Asked Questions
- What are the dimensions of the SKF 3308 ATN9/C3 bearing?
- The SKF 3308 ATN9/C3 bearing has a 40 mm bore, a 90 mm outside diameter and a 36.5 mm width (40 x 90 x 36.5 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 3308.
- What does the ATN9 suffix mean in an SKF bearing?
- The ATN9 suffix indicates a design with a polyamide cage and a specific contact angle. This configuration is common in double row bearings and offers a balance between load capacity and speed. For precise details, consult the product data sheet.
- When to choose a C3 clearance instead of a C2?
- C3 clearance is selected when elevated temperatures or interference fits that reduce internal clearance are expected. C2 is used in high-precision applications where minimal clearance is required. The choice depends on operating conditions and the type of assembly.
- Can I replace an SKF bearing with another brand?
- Yes, equivalents from other brands exist, but it is essential to verify dimensions, tolerances and load capacity. Suffixes may not match exactly. We recommend validating interchangeability with a specialist to avoid premature failures.