SKF 302/28 J2 tapered roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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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 302/28 J2
- 302Series
- Tapered roller bearings, 302 series. For the same bore, each series has a different outside diameter and width.
- /28Bore
- 28 mm bore.
- J2Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
302/28 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 302/28 J2 bearing has a 28 mm bore, a 58 mm outside diameter and a 17.25 mm total width (28 x 58 x 17.25 mm).
SKF 302/28 J2 is a reference of tapered roller bearing, within Bearings. Request a quote for 302/28 J2 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF tapered roller bearings are separable units made up of a cone (inner ring with rollers and cage) and a cup (outer ring). They are designed to support combined radial and axial loads, with high load capacity. They are used in gearboxes, wheel hubs, machine tools and industrial equipment where axial clearance must be controlled precisely. MR Accesorios Industriales carries this line as a brand, with technical advice to choose the correct designation.
The designation of a tapered roller bearing combines numbers and letters that indicate dimensions and variants. For example, in 30302 J2, the digits define the size according to the dimension series, the letter J identifies the contact angle and the final number the cage or treatment variant. The series is named by its letters and examples: series J, with cases such as 30302 J2. Not all letters are present in every item; each suffix responds to a specific design feature.
In Argentine industry, these bearings appear in gearboxes, speed reducers, vehicle wheel hubs and material handling equipment. They are also found in road and agricultural machinery and in machine tool spindles. Their ability to support combined loads makes them suitable for assemblies where the shaft works with radial and axial forces at the same time, such as in pumps, fans and conveyors.
To select correctly, take into account the type of load, the rotation speed and the available space. Assembly requires adjusting the axial clearance: excessive clearance generates vibration and wear, while insufficient clearance raises the temperature. Lubrication must be adequate for the operating regime, and sealing prevents contamination. Alignment between cone and cup is critical; angular misalignment reduces service life. Follow the manufacturer's instructions for assembly and start-up.
As for equivalences, tapered roller bearings are identified by their numeric designation and suffixes, which may vary between manufacturers. There is no universal automatic correspondence: two bearings with the same basic designation may differ in tolerances, cage or heat treatment. Therefore, when replacing, verify the dimensions and characteristics with the complete part number. MR Accesorios Industriales can help you interpret the designation and find the right part.
If you need a tapered roller bearing, send the complete part number via WhatsApp to MR Accesorios Industriales. We advise you so you can choose the correct option for your application. We support Argentine industry with products and technical support.
Dimensions
Boundary dimensions of the basic designation 302/28 per ISO 355: 28 x 58 x 17.25 mm (d x D x T).
- Bore
- 28mm
- Outside diameter (D)
- 58mm
- Total width (T)
- 17.25mm
The same size in other brands
Pages from other brands with the basic designation 302/28: 28 x 58 x 17.25 mm (d x D x T) per ISO 355.
- RKB302/28
They share the boundary dimensions set by ISO 355, 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 302/28 J2 bearing?
- The SKF 302/28 J2 bearing has a 28 mm bore, a 58 mm outside diameter and a 17.25 mm total width (28 x 58 x 17.25 mm). These are the standardised boundary dimensions (ISO 355) of the basic designation 302/28.
- What does the designation of a tapered roller bearing mean?
- The designation combines numbers and letters that indicate dimensions, contact angle and cage or treatment variants. For example, in
30302 J2, the digits define the size, the J the angle and the 2 the variant. Each suffix responds to a specific design feature. - How is a tapered roller bearing mounted?
- It is mounted by adjusting the axial clearance according to the manufacturer's specifications. It is important to align cone and cup, lubricate correctly and avoid blows that damage the raceways. Poorly adjusted clearance shortens service life. Follow the technical instructions for each application.
- Can I replace a bearing from one brand with one from another?
- Not always. Although the basic designation matches, tolerances, cage or heat treatment may vary. Verify the dimensions and characteristics with the complete part number. MR Accesorios Industriales can help you interpret the designation and find the right equivalent.