SKF 6304 TN9/C4 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Other brands for this category
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Decoding SKF 6304 TN9/C4
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 04Bore
- Bore 20 mm (04 × 5).
- TN9/C4Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6304 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6304 TN9/C4 measures 20 mm across the bore and 52 mm across the outside diameter; its width is 15 mm (20 x 52 x 15 mm).
SKF 6304 TN9/C4 belongs to deep groove ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6304 TN9/C4 and any equivalents.
SKF TN9/C3 deep groove ball bearings handle moderate radial and axial loads in both directions. The TN9 polyamide cage and C3 internal clearance suit applications where operating temperatures are elevated or extra clearance is needed. MR Industrial Accessories LLC supplies this line to customers throughout the United States and in several Latin American countries.
The part number itself tells you what you are getting. In a designation such as 6001 TN9/C3, the digits at the front define the size and series: 60 for extra-light section, 62 for medium section. TN9 signals a glass fiber reinforced polyamide cage, and C3 means internal radial clearance is greater than normal. A C4 suffix goes wider still. Reading these suffixes correctly is the fastest way to match a bearing to its duty.
You will find these bearings in electric motors, centrifugal pumps, fans, gearboxes, conveyors and agricultural machinery. Their design works in fixed or floating arrangements, and they are common where low maintenance and dependable running are priorities. Food, chemical and metallurgical operations use them because they perform well from moderate up to high temperatures.
Selection comes down to radial and axial load, rotational speed and operating temperature. Choose C3 or C4 clearance when the shaft will expand thermally or when fits are interference. The TN9 cage withstands continuous temperatures up to 120 °C. At mounting, align carefully and lubricate properly; for high speeds, a low-viscosity lubricant is preferable. Sealing follows the environment: open bearings for oil, sealed versions for contaminated areas.
SKF deep groove ball bearings interchange with other brands that share the same standardized dimensions. On a replacement, confirm bore, outer diameter and width, plus cage type and internal clearance. Designations differ between manufacturers, but the dimensional codes usually line up. For critical applications, check tolerances and load ratings against the original manufacturer's data.
To replace an SKF deep groove ball bearing, send the complete part number to MR Industrial Accessories LLC by WhatsApp or email. The team replies promptly, can suggest equivalents and will help you choose the right variant for your equipment.
More SKF versions in the 6304 series
SKF lists these 6304 series versions in its catalogs, but they don't have a page on this site. Send us the part number of any of them and we'll find it and quote it.
- SKF 6304 ETN9
- SKF 6304 N
Dimensions
20 x 52 x 15 mm (d x D x B): boundary dimensions for basic designation 6304, according to ISO 15.
- Bore
- 20mm
- Outside diameter (D)
- 52mm
- Width (B)
- 15mm
Same size, other brands
Other brands' pages with basic designation 6304: 20 x 52 x 15 mm (d x D x B) per ISO 15.
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 6304 TN9/C4 bearing: what are its dimensions?
- SKF 6304 TN9/C4 measures 20 mm across the bore and 52 mm across the outside diameter; its width is 15 mm (20 x 52 x 15 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6304.
- What does the TN9 suffix mean in an SKF bearing?
- TN9 identifies a glass fiber reinforced polyamide cage. It is lightweight, resists corrosion and handles temperatures up to 120 °C. It is often found in applications that need low friction and high speed.
- When should I choose C3 clearance instead of CN?
- C3 is greater than normal (CN) clearance. It is the better choice when the shaft expands thermally, when fits are interference or when speeds are high. It helps prevent excessive preload and supports bearing service life under demanding conditions.
- How do I request a quote for SKF TN9/C3 bearings?
- Send the complete part number, for example 6204 TN9/C3, by WhatsApp or email. MR Industrial Accessories LLC will reply promptly with a quote and can advise on equivalents.