SKF 6306-2RS1NR/C3 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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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 6306-2RS1NR/C3
- 63Series
- Deep groove ball bearings, 63 series. For the same bore, each series has a different outside diameter and width.
- 06Bore
- 30 mm bore: 06 × 5.
- 2RS1NR/C3Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
6306 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 6306-2RS1NR/C3 bearing has a 30 mm bore, a 72 mm outside diameter and a 19 mm width (30 x 72 x 19 mm).
SKF 6306-2RS1NR/C3 is a reference of deep groove ball bearing, within Bearings. Request a quote for 6306-2RS1NR/C3 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The SKF deep groove ball bearing of the 63 series is a medium section component that supports radial and axial loads in both directions. Its compact and robust design makes it suitable for applications requiring high load capacity and rigidity. SKF is a brand that MR supplies, which guarantees quality and technical support for your industrial equipment.
The designation of these bearings is interpreted as follows: the prefix 63 indicates the dimension series, in this case medium section, with a balance between load capacity and size. The suffixes 2RS1 indicate elastomer seals on both sides, which retain lubricant and block contaminants. The code NR indicates a groove for a retaining ring on the outer ring, useful for axial fixing. Finally, C3 specifies a radial internal clearance greater than standard, suitable for high-temperature conditions or interference fits. Examples such as 6306-2RS1NR/C3 and 6308-2RS1NR/C3 show this combination of features.
These bearings are used in a wide variety of industrial applications in Argentina: electric motors, centrifugal pumps, fans, gearboxes, conveyors and agricultural machinery. Their ability to support combined loads and their sealing make them ideal for environments with dust or moderate humidity. Industries such as food, chemical, petrochemical and metallurgical often use them in transmission and continuous rotation equipment.
To select correctly, take into account the radial and axial load, the rotation speed and the environmental conditions. The 2RS1 sealing is suitable for applications requiring protection against particles and water. The C3 clearance is recommended when the bearing operates at high temperatures or when the fit on the shaft and housing can reduce the internal clearance. Lifetime lubrication in these sealed bearings simplifies maintenance. Ensure precise alignment between shaft and housing to avoid additional loads and extend service life.
Regarding equivalences, deep groove ball bearings of the 63 series with seals and NR groove can be interchanged with products from other brands that follow the same dimensional and suffix designation. However, always verify tolerances and radial clearance, as they may vary between manufacturers. Standard interchangeability is based on ISO dimensions, but the sealing and clearance characteristics must match the requirements of your application. Consult our technical team to validate the exact equivalent.
To request a quote for the bearing you need, send us the complete part number by WhatsApp to MR Accesorios Industriales. We advise you so you can choose the right option according to your equipment and operating conditions. Write to us and we will respond shortly.
Other SKF versions of the 6306 series
These versions of the 6306 series appear in SKF catalogues and do not have their own page on this site. Ask us about any of them with the part number: we will source it and send you a quote.
- SKF 6306 ETN9
- SKF 6306 N
Dimensions
Boundary dimensions of the basic designation 6306 per ISO 15: 30 x 72 x 19 mm (d x D x B).
- Bore
- 30mm
- Outside diameter (D)
- 72mm
- Width (B)
- 19mm
The same size in other brands
Pages from other brands with the basic designation 6306: 30 x 72 x 19 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 6306-2RS1NR/C3 bearing?
- The SKF 6306-2RS1NR/C3 bearing has a 30 mm bore, a 72 mm outside diameter and a 19 mm width (30 x 72 x 19 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 6306.
- What does the 2RS1 suffix mean in an SKF bearing?
- 2RS1 indicates that the bearing has elastomer seals on both sides. These seals retain lubricant and protect against the entry of contaminants, ideal for environments with dust or humidity.
- What is the NR groove on the outer ring for?
- The NR groove allows a retaining ring to be fitted that axially fixes the bearing in the housing. This simplifies the design and prevents unwanted displacement in applications with axial loads.
- When is it advisable to choose a bearing with C3 clearance?
- The C3 clearance is recommended when the bearing operates at high temperatures, since thermal expansion reduces the internal clearance. Also in assemblies with interference fits that may compress the bearing.