
RKB 15103 S/15243 tapered roller bearing
- Brand
- RKB
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
RKB 15103 S/15243 is a reference of tapered roller bearing, within Bearings. Request a quote for 15103 S/15243 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
RKB tapered roller bearings are components designed to withstand combined radial and axial loads. Their tapered roller and raceway geometry allows linear contact that distributes loads better. They are used in applications with significant forces and high load capacity requirements, such as gearboxes, machine shafts and industrial equipment. MR Accesorios Industriales sells this brand and advises you on choosing the right bearing for your application.
The designation of these RKB tapered bearings consists of two numbers separated by a slash: the first identifies the cone (inner cone with its cage and rollers) and the second the cup (outer ring). For example, 15103 S/15243 and 15103 S/15245 indicate a 15103 cone combined with different cups. The letter S on the cone may indicate a design or tolerance variant. Knowing both codes is key to ordering the correct replacement, since the cone-cup assembly defines the mounting dimensions.
These bearings are used in a wide variety of industrial equipment in Argentina. They are found in speed reducers, transmission boxes, machine tool shafts, mining equipment, cement plants and food plants. They are also found in conveyor rollers, overhead cranes and agricultural machinery. Their ability to withstand combined loads makes them suitable for applications with simultaneous radial and axial forces, such as helical gears or inclined shafts.
To select the correct bearing, take into account the radial and axial load it must withstand, the rotation speed and the environmental conditions. Mounting requires careful alignment and proper adjustment of the axial clearance, which is regulated by displacing the cup or the cone. Lubrication can be with grease or oil, depending on the application, and keeping it clean is essential to avoid contamination. Seals and oil seals protect the bearing from dust and moisture, extending its service life.
As for equivalents, tapered roller bearings are manufactured under international standards that allow components to be interchanged between different brands, as long as the dimensions and contact angle match. If you need to replace a bearing from another brand, you can send us the complete code or the main dimensions (inner, outer and width diameter) and we will indicate the compatible alternative. MR Accesorios Industriales sells the RKB brand and can quote the exact code you need.
To request a quote for your RKB tapered roller bearing, write to us on WhatsApp with the complete code (for example, 15103 S/15243) or with the dimensions of your application. We will reply shortly with the quote and the technical information you need. MR Accesorios Industriales, with more than 80 years in the industry, is at your disposal to advise you on the selection and mounting of these components.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm the dimensions and version against the manufacturer's data sheet.
Frequently Asked Questions
- How do I identify the tapered bearing I need?
- The complete code includes the cone number and the cup number, separated by a slash. For example,
15103 S/15243. If you have the old bearing, send us both numbers or the inner, outer and width dimensions, and we will quote the exact replacement. - What is the difference between the cone and the cup?
- The cone is the inner assembly with the rollers and the cage; the cup is the outer ring. Both are mounted separately and must be combined according to the original design. When ordering a replacement, it is important to specify both codes to ensure dimensional and angle compatibility.
- How are these bearings lubricated and maintained?
- They can be lubricated with grease or oil, depending on the speed and working temperature. Keeping them clean and checking the axial clearance periodically is key. Proper sealing prevents the entry of contaminants and extends the bearing's service life.

