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21308 E/C3 Double Row Spherical Roller Bearing
21308 E/C3 Double Row Spherical Roller Bearing

21308 E/C3 Double Row Spherical Roller Bearing

The 21308 E/C3 is a double-row spherical roller bearing with a 40mm bore and 90mm outer diameter, crafted from sturdy chrome steel. It supports combined loads up to 24055 lbf and can reach speeds of 9500 RPM.

Its spherical roller design allows for slight misalignment, while the steel cage ensures durability. The open construction requires regular lubrication but offers easy maintenance.

This bearing operates smoothly in temperatures from -30°C to 200°C. It’s interchangeable with SKF models, making it a practical choice for replacements.

Ideal for heavy-duty applications like industrial gearboxes or mining equipment where high radial loads are common. Weighing 0.74kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number 21308 E/C3
  • Brand TFL
  • Interchangeable SKF
  • Size 40 x 90 x 23 mm
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 90 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 23 mm
  • Width Tolerance -0.06mm to 0
  • Shoulder Dia Of Inner Ring 60 mm
  • Shoulder/Recess Dia Of Outer Ring 79.8 mm
  • Width Of Lubrication Groove 5.5 mm
  • Diameter Of Lubrication Hole 3 mm
  • Chamfer Dimension min.1.5 mm
  • System of Measurement Metric
  • Radial run-out Standard
  • Bearing Type Roller
  • Roller Bearing Type Spherical
  • Bore Type Cylindrical
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 24055 lbf
  • Static Radial Load 24279 lbf
  • Max Speed 9500 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance C3
  • RoHs Compliant
  • REACH Compliant
  • Weight 0.74 kg
  • Price (US$) 37.85

Features

Performance Features of 21308 E/C3 Bearing

21308 E/C3 Bearing is built with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity of 24055 lbf ensures reliability in heavy-duty applications.

The double-row spherical roller design allows for slight misalignment, maintaining smooth operation.
With a maximum speed of 9500 rpm, it delivers both durability and efficiency.

21308 E/C3 Bearing operates in temperatures from -30° to 200°C, suitable for varied environments.
The C3 radial clearance provides optimal performance under thermal expansion conditions.

Its steel cage keeps rollers aligned, reducing wear and extending service life.
The lubrication groove and hole design ensure consistent performance with minimal maintenance.

Application

Industrial Uses of 21308 E/C3 Bearing
The 21308 E/C3 Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row design handles combined loads effectively.
Its spherical roller construction allows for slight misalignment, making it suitable for rough operating conditions.

Where Is 21308 E/C3 Bearing Used?
You’ll often find 21308 E/C3 Bearing in mining equipment, where its high dynamic radial load capacity ensures reliable performance.
The C3 radial clearance also helps accommodate thermal expansion in high-temperature environments.

Built for Heavy-Duty Use: 21308 E/C3 Bearing
21308 E/C3 Bearing works well in conveyor systems, thanks to its robust chrome steel rollers and steel cage.
The lubrication groove design simplifies maintenance, extending bearing life in demanding applications.

Automotive vs Aerospace: Applications of 21308 E/C3 Bearing
In automotive applications, 21308 E/C3 Bearing supports drivetrain components, while its high-speed capability makes it useful in aerospace auxiliary systems.
The metric sizing ensures compatibility with a wide range of industrial and transportation equipment.

Perfect Fit for Automation: 21308 E/C3 Bearing
21308 E/C3 Bearing is a solid choice for robotic arms, where its combined load handling and misalignment tolerance improve precision.
The open seal design allows for easy relubrication, keeping automation systems running smoothly.

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