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Single Row Cylindrical Roller Bearings Without Inner Ring RNU 308 ECJ
Single Row Cylindrical Roller Bearings Without Inner Ring RNU 308 ECJ

Single Row Cylindrical Roller Bearings Without Inner Ring RNU 308 ECJ

The RNU 308 ECJ is a single-row cylindrical roller bearing without an inner ring, featuring a 52mm diameter under rollers and a 90mm outer diameter. Made from chrome steel, it handles combined loads with a dynamic radial load capacity of 20925 lbf.
Its open design and stamped steel cage ensure smooth operation at speeds up to 10000 RPM. The bearing works well with both grease and oil lubrication, and operates in temperatures from -30°C to 110°C.
This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for heavy-duty applications like industrial machinery or gearboxes where high radial loads are common.
Weighing 0.5kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable use.

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Product Parameters

  • Part Number RNU 308 ECJ
  • Brand TFL
  • Interchangeable SKF
  • Diameter Under Rollers 52 mm
  • Diameter Under Rollers Tolerance -0.15mm to 0
  • Outer Dia 90 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 23 mm
  • Width Tolerance -0.12mm to 0
  • Shoulder Dia Outer Ring 75.18 mm
  • Corner Radius(r1,2)(min.) 1.5 mm
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Construction Single Row
  • Inner Ring Type Without
  • Seal Type Open
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Stamped steel cage, roller centred
  • Dynamic Radial Load 20925 lbf
  • Static Radial Load 17550 lbf
  • Max Speed 10000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.5 kg
  • Weight 0.5 kg

Features

Performance Features of RNU 308 ECJ Bearing
RNU 308 ECJ Bearing is crafted with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20925 lbf, ensuring reliable performance in demanding conditions.
The stamped steel cage keeps the rollers centred, reducing friction and extending service life.
With a maximum speed of 10000 rpm, it balances durability and efficiency in various applications.
RNU 308 ECJ Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its open design allows for easy lubrication with grease or oil, reducing maintenance needs.
The absence of an inner ring makes RNU 308 ECJ Bearing suitable for specific mounting requirements.
Its precise dimensions and tolerances ensure a secure fit and consistent performance.

Application

Industrial Uses of RNU 308 ECJ Bearing
RNU 308 ECJ Bearing is commonly used in heavy machinery like gearboxes and pumps, where its cylindrical roller design handles combined loads efficiently. The open structure allows for easy lubrication, extending service life in demanding conditions.
In automotive applications, RNU 308 ECJ Bearing fits well in wheel hubs and transmissions, thanks to its high-speed capability and radial load capacity. Its metric dimensions make it a versatile choice for various vehicle designs.
For automation systems, RNU 308 ECJ Bearing’s stamped steel cage ensures smooth operation in robotic arms and conveyor belts. The chrome steel construction provides durability in continuous-use environments.
Medical equipment benefits from RNU 308 ECJ Bearing’s precision in devices like centrifuges, where consistent performance is key. The grease or oil lubrication options adapt to different operational needs.
In household appliances, RNU 308 ECJ Bearing can be found in washing machines and power tools, offering reliable performance under everyday loads. Its compact design fits neatly into space-constrained assemblies.

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