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Cylindrical roller bearing without inner ring, steel cage · SKF RNU 205 ECP
SKF RNU 205 ECP cylindrical roller bearing

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SKF RNU 205 ECP cylindrical roller bearing

Manufacturer part numberRNU 205 ECPAlso known as: RNU205ECP · RNU205 ECP
Brand
SKF
Category
Bearings
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Description

SKF RNU 205 ECP belongs to cylindrical roller 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 RNU 205 ECP and any equivalents.

For equipment that runs on high radial loads and needs a compact, rigid bearing arrangement, the SKF RNU ECP series is a practical choice. Because these cylindrical roller bearings have no inner ring, the shaft itself serves as the raceway, provided it is hardened and ground to the required specification. This design simplifies assembly and reduces weight in the surrounding structure. Typical uses include machine tools, pumps, compressors and transmission equipment.

The series covers sizes such as RNU 202 ECP, RNU 203 ECP, RNU 204 ECP, RNU 205 ECP, RNU 208 ECP, RNU 307 ECP, RNU 308 ECP and RNU 2304 ECP. To read the designation, start with RNU: a single-row cylindrical roller bearing without an inner ring. The ECP suffix points to a glass fiber reinforced polyamide cage, which suits high speeds and moderate operating temperatures. The digits that follow identify the size and dimension series, which change with shaft diameter and required load capacity.

These bearings appear in metalworking, food processing, petrochemical and power generation plants. They are common in centrifugal pumps, screw compressors, gearboxes, machine tools and continuous process lines. Since they handle radial forces well, they fit gear and belt drives where the load is mainly radial. When the shaft can act as the raceway, the assembly becomes smaller and mounting is simplified.

Selection depends on more than the part number. Check the hardness and surface roughness of the shaft, because it must meet raceway requirements. Mounting calls for precise alignment and a correct fit between shaft and rollers. Grease or oil lubrication is chosen according to speed and operating temperature. For contaminated environments, lip seals or shields are recommended. Internal clearance and thermal expansion also need attention to avoid premature failure.

Interchangeability is possible with other manufacturers that use the same standardized designation, but dimensions and tolerances can differ slightly from one brand to another. Verify dimensional and load compatibility before substituting. MR Industrial Accessories supplies this line and can help you confirm the designation and review operating conditions for your application.

To request a quote, send the full product code by WhatsApp or email. The team responds promptly and can suggest equivalents and help you choose the right variant. Guidance on mounting, lubrication and maintenance is also available.

Dimensions

Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.

Frequently asked questions

What does the RNU ECP designation mean?
RNU identifies a cylindrical roller bearing without an inner ring, with one row of rollers. ECP refers to a glass fiber reinforced polyamide cage for high speeds and moderate temperatures. The numbers indicate size and dimension series.
Where are RNU ECP bearings used?
They suit high radial load applications such as pumps, compressors, gearboxes, machine tools and transmission equipment, across metalworking, food, petrochemical and power generation industries.
How is an RNU ECP bearing mounted?
The shaft must be hardened and ground to act as the raceway. Ensure precise alignment and a proper fit. Lubrication can be grease or oil, and sealing depends on the environment. Check the technical manual for recommended internal clearance.
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