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Single Row Cylindrical Roller Bearings Without Inner Ring RNU 304

Single Row Cylindrical Roller Bearings Without Inner Ring RNU 304

The RNU 304 is a single-row cylindrical roller bearing without an inner ring, featuring a 28.5mm diameter under rollers and a 52mm outer diameter. Made from chrome steel, it’s built to handle combined loads with a dynamic radial load capacity of 4612 lbf.
Its brass cage keeps the rollers centred, ensuring smooth operation at speeds up to 18000 RPM. The open design allows for easy lubrication with grease or oil, making maintenance straightforward.
This bearing suits applications where space is tight, such as in gearboxes or pumps. It’s interchangeable with SKF models, offering a reliable replacement option. Weighing just 0.11kg, it’s lightweight yet durable for its size.
With a temperature range of -30°C to 110°C, it performs well in various environments. Compliant with RoHS and REACH standards, it’s a safe choice for industrial use.

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Product Parameters

  • Part Number RNU 304
  • Brand TFL
  • Interchangeable SKF
  • Diameter Under Rollers 28.5 mm
  • Diameter Under Rollers Tolerance -0.01mm to 0
  • Outer Dia 52 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 15 mm
  • Width Tolerance -0.12mm to 0
  • Shoulder Dia Outer Ring 40.55 mm
  • Corner Radius(r1,2)(min.) 1.1 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 Brass cage, roller centred
  • Dynamic Radial Load 4612 lbf
  • Static Radial Load 3735 lbf
  • Max Speed 18000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.11 kg
  • Weight 0.11 kg
Single Row Cylindrical Roller Bearings Without Inner Ring RNU 304 dimension drawing
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Features

How Is RNU 304 Bearing Engineered for Reliability?
RNU 304 Bearing features a chrome steel construction, ensuring durability under combined loads.
Its brass cage keeps the rollers centred, reducing friction and enhancing performance.
The dynamic radial load capacity of 4612 lbf makes RNU 304 Bearing suitable for demanding applications.
It operates smoothly at speeds up to 18,000 rpm, balancing speed and reliability.
RNU 304 Bearing works in temperatures from -30° to 110°C, adapting to various environments.
Its open design allows for easy lubrication with grease or oil, simplifying maintenance.

Application

Industrial Uses of RNU 304 Bearing
RNU 304 Bearing is commonly used in machine tools, where its cylindrical roller design handles combined loads efficiently. The open seal allows for easy lubrication, making it suitable for high-speed operations.
In automotive applications, RNU 304 Bearing fits well in gearboxes and drivetrains, thanks to its brass cage that reduces friction. Its metric dimensions ensure compatibility with various vehicle designs.
For automation systems, RNU 304 Bearing provides reliable performance in robotic arms and conveyor belts. The chrome steel construction ensures durability even in demanding industrial environments.
Medical equipment like diagnostic machines benefit from RNU 304 Bearing’s precision and smooth operation. The grease or oil lubrication options make it adaptable to different maintenance needs.
In household appliances, RNU 304 Bearing can be found in washing machines and power tools. Its compact size and robust design make it a practical choice for everyday use.

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