SKF 3309 ENR/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 3309 ENR/C3
- 33Series
- Double row angular contact ball bearings, 33 series. For the same bore, each series has a different outside diameter and width.
- 09Bore
- 45 mm bore: 09 × 5.
- ENR/C3Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
3309 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 3309 ENR/C3 bearing has a 45 mm bore, a 100 mm outside diameter and a 39.7 mm width (45 x 100 x 39.7 mm).
SKF 3309 ENR/C3 is a reference of double row angular contact ball bearing, within Bearings. Request a quote for 3309 ENR/C3 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The SKF double row angular contact bearing is a component designed to support radial and axial loads in both directions. Its construction with two rows of balls and inclined raceways allows it to handle tilting moments and combined loads, making it ideal for applications requiring high rigidity and precision. It is a compact solution that simplifies assembly design, as it can replace two single row bearings in a single support.
The designation of these bearings follows a scheme combining numbers and suffixes. For example, in 3309 ENR/C3, the first digits indicate the type and dimension series; ENR indicates specific internal characteristics, such as raceway design or contact angle; and C3 specifies an internal radial clearance greater than normal. Understanding these codes is key to selecting the correct bearing according to operating conditions.
They are used in a wide variety of industries in Argentina, such as metallurgy, food, cement and mining. They are common in gearboxes, pumps, fans, machine tools and power transmission equipment. Their ability to support loads in two directions makes them suitable for applications with load reversal or moments, such as milling machine spindles or roller shafts.
For proper selection, consider the magnitude and direction of loads, rotation speed and environmental conditions. Sealing is essential to retain lubricant and exclude contaminants; choose the sealing type according to the environment. Internal clearance must be appropriate for the working temperature and mounting fit. Correct lubrication and precise alignment extend bearing service life.
There are cross-brand equivalents for this type of bearing, but it is important to verify dimensions and load capacities before interchanging. Not all suffixes match between manufacturers, so consulting a specialist is recommended. At MR Accesorios Industriales we can advise you on interchangeability and ensure the replacement meets your application requirements.
If you need this bearing, send us the complete code via WhatsApp to MR Accesorios Industriales. We provide personalized attention and help you find the right solution for your equipment. Request a quote with no obligation and receive the technical advice you need.
Dimensions
Boundary dimensions of the basic designation 3309 per ISO 15: 45 x 100 x 39.7 mm (d x D x B).
- Bore
- 45mm
- Outside diameter (D)
- 100mm
- Width (B)
- 39.7mm
Frequently Asked Questions
- What are the dimensions of the SKF 3309 ENR/C3 bearing?
- The SKF 3309 ENR/C3 bearing has a 45 mm bore, a 100 mm outside diameter and a 39.7 mm width (45 x 100 x 39.7 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 3309.
- What does the C3 suffix mean on a bearing?
- The C3 suffix indicates an internal radial clearance greater than normal. It is used when the bearing will operate at elevated temperatures or with mounting fits that reduce clearance, to avoid excessive preload.
- Can this bearing support axial loads in both directions?
- Yes, the double row angular contact design allows it to support axial loads in both directions, as well as radial loads and moments. It is ideal for applications with load reversal.
- How do I choose between a single row and a double row bearing?
- If you need to support axial loads in two directions or moments, the double row is more compact and rigid. For loads in a single direction, a single row may be sufficient and more economical.