SKF 3304 A-2RS1TN9/C3MT33 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 3304 A-2RS1TN9/C3MT33
- 33Series
- Double row angular contact ball bearings, 33 series. For the same bore, each series has a different outside diameter and width.
- 04Bore
- 20 mm bore: 04 × 5.
- A-2RS1TN9/C3MT33Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
3304 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 3304 A-2RS1TN9/C3MT33 bearing has a 20 mm bore, a 52 mm outside diameter and a 22.2 mm width (20 x 52 x 22.2 mm).
SKF 3304 A-2RS1TN9/C3MT33 is a reference of double row angular contact ball bearing, within Bearings. Request a quote for 3304 A-2RS1TN9/C3MT33 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 combined radial and axial loads in both directions. Their construction with two rows of balls and inclined raceways allows them to handle significant axial forces while maintaining high rigidity. They are used in applications requiring precision and load capacity, such as machine tool spindles, pumps, compressors and gearboxes. At MR Accesorios Industriales we carry this SKF line to provide reliable solutions to Argentine industry.
The designation of these bearings follows a scheme that combines numbers and suffixes. For example, in 3203 A-2RS1TN9/C3MT33, the first digits indicate the size and series. The letter A indicates a specific internal design. The suffix 2RS1 indicates rubber seals on both sides, TN9 designates a polyamide cage, C3 establishes an internal radial clearance greater than normal, and MT33 identifies the type of grease and its temperature range. Knowing these codes allows you to select the right variant for each application.
These bearings are used in industries such as metalworking, petrochemical, food and process industries. Typical applications include machine tool main spindles, high-pressure pumps, screw compressors, gearboxes and power transmission equipment. Their ability to support axial loads in both directions makes them ideal for assemblies requiring rigidity and precision, such as electric motor shafts or positioning systems.
To select correctly, you must consider the axial and radial load, the operating speed and the environmental conditions. The 2RS1 seal protects against contaminants and retains lubrication, making it suitable for dusty or humid environments. C3 clearance is recommended when there are thermal differences between the shaft and the housing. During mounting, it is crucial to align the rings and apply the proper preload; poor alignment can reduce service life. Lubrication with MT33 grease is already applied at the factory, but in severe applications it may require relubrication.
As for equivalents, double row angular contact bearings from other brands can be interchanged if dimensions and suffixes match. However, it is essential to verify tolerances and internal clearance, since small differences affect performance. SKF is a global benchmark, and at MR Accesorios Industriales we offer this product. We always recommend consulting with our technical team before replacing one bearing with another of a different brand.
To receive an accurate quote, send the complete bearing code you need by WhatsApp to MR Accesorios Industriales. Our team will advise you and confirm the quote for the exact reference. We work with SKF and can help you find the best solution for your industrial application.
Dimensions
Boundary dimensions of the basic designation 3304 per ISO 15: 20 x 52 x 22.2 mm (d x D x B).
- Bore
- 20mm
- Outside diameter (D)
- 52mm
- Width (B)
- 22.2mm
Frequently Asked Questions
- What are the dimensions of the SKF 3304 A-2RS1TN9/C3MT33 bearing?
- The SKF 3304 A-2RS1TN9/C3MT33 bearing has a 20 mm bore, a 52 mm outside diameter and a 22.2 mm width (20 x 52 x 22.2 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 3304.
- What does the C3 suffix mean in these bearings?
- The C3 suffix indicates an internal radial clearance greater than standard. It is used when operating conditions create thermal differences between the shaft and the housing, preventing the bearing from being left with excessive preload.
- Do these bearings come lubricated from the factory?
- Yes, the MT33 designation indicates that they include factory grease for a specific temperature range. In severe or high-speed applications, relubrication may be necessary according to the manufacturer's recommendations.
- Can I replace an SKF bearing with another brand?
- In general, yes, as long as dimensions, internal clearance and seal type match. It is important to verify tolerances and consult with our technical team to ensure proper operation.