SKF 2304 TN9 self-aligning ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
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How to read SKF 2304 TN9
- 23Series
- Self-aligning ball bearings, 23 series. For the same bore, each series has a different outside diameter and width.
- 04Bore
- 20 mm bore: 04 × 5.
- TN9Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
2304 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 2304 TN9 bearing has a 20 mm bore, a 52 mm outside diameter and a 21 mm width (20 x 52 x 21 mm).
SKF 2304 TN9 is a reference of self-aligning ball bearing, within Bearings. Request a quote for 2304 TN9 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF self-aligning ball bearings of the TN series are double-row ball bearings with a spherical outer raceway that compensates for angular misalignment between shaft and housing. They are used in applications where perfect alignment cannot be guaranteed, such as transmissions, fans or agricultural machinery. MR Accesorios Industriales sells this line, backed by experience in the industry.
The designation of these bearings combines a basic number and suffixes that indicate particularities. For example, 2304 TN9 corresponds to a self-aligning bearing of the 23 series, while 11204 TN9 belongs to the 112 series, with specific dimensions. The suffix TN9 indicates that the cage is made of polyamide reinforced with glass fiber, suitable for moderate temperatures. Other suffixes may indicate internal clearance or sealing, but it is always advisable to verify the complete code to ensure the desired configuration.
These bearings are used in equipment where there are shaft deflections or less rigid mountings: conveyor belts, mixers, centrifugal pumps, industrial fans and food machinery. In Argentina, they are common in the agro-industrial sector, processing plants and maintenance workshops. Their self-aligning capability reduces wear and extends service life under demanding working conditions.
To select the appropriate bearing, take into account the radial and axial load, the rotation speed and the environment. The TN series usually comes unsealed, so if there is dust or moisture, consider adding external seals or choosing a sealed variant. During assembly, ensure correct initial alignment and adequate lubrication; the polyamide cage does not require special care, but avoid impacts that could damage it.
Regarding equivalences, SKF self-aligning ball bearings can be interchanged with those of other brands that follow the same standardized dimensions, such as FAG, NSK or NTN. Always verify the complete code and tolerances, since small differences in internal clearance or cage type can affect performance.
If you need to request a quote for an SKF self-aligning ball bearing of the TN series, send us the exact code via WhatsApp. At MR Accesorios Industriales we advise you to choose the correct option for your application.
Dimensions
Boundary dimensions of the basic designation 2304 per ISO 15: 20 x 52 x 21 mm (d x D x B).
- Bore
- 20mm
- Outside diameter (D)
- 52mm
- Width (B)
- 21mm
The same size in other brands
Pages from other brands with the basic designation 2304: 20 x 52 x 21 mm (d x D x B) per ISO 15.
They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the SKF 2304 TN9 bearing?
- The SKF 2304 TN9 bearing has a 20 mm bore, a 52 mm outside diameter and a 21 mm width (20 x 52 x 21 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 2304.
- What does the suffix TN9 mean in an SKF bearing?
- The suffix TN9 indicates that the bearing has a polyamide cage reinforced with glass fiber, suitable for applications with moderate temperatures and high speeds. It does not change the external dimensions or load capacity, but it influences heat dissipation and fatigue resistance.
- Does this bearing allow misalignment?
- Yes, self-aligning ball bearings are designed to compensate for angular misalignment between the shaft and the housing. This reduces stresses and extends service life in mountings where perfect alignment is not achieved, such as in flexible shafts or separate housings.
- How do I request the correct code for a quote?
- Provide the complete code that appears on the bearing or in your equipment manual. If you do not have it, tell us the measurements or send a photo and we will help you identify it. At MR Accesorios Industriales we quote quickly via WhatsApp.