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21308 EW Double Row Spherical Roller Bearing
21308 EW Double Row Spherical Roller Bearing

21308 EW Double Row Spherical Roller Bearing

The 21308 EW is a double-row spherical roller bearing with a 40mm bore and 90mm outer diameter, crafted from robust chrome steel. It manages combined loads up to 24055 lbf and operates smoothly at speeds up to 9500 RPM.

Its open design and steel cage ensure durability, while the lubrication groove and holes make maintenance straightforward. The bearing performs reliably in temperatures ranging from -30°C to 200°C.

This model is interchangeable with SKF bearings, offering a dependable replacement option. Suitable for heavy-duty applications like industrial gearboxes or mining equipment where high radial loads are present.

Weighing 0.74kg, it balances strength and practicality. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 21308 EW
  • 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 CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 0.74 kg
  • Price (US$) 37.85

Features

Performance Features of 21308 EW Bearing

21308 EW Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 24055 lbf, ensuring reliable performance in tough conditions.

The double-row spherical roller design allows for slight misalignment, reducing stress on the bearing.
This feature enhances durability and extends the service life even under heavy loads.

With a maximum speed of 9500 rpm, 21308 EW Bearing balances high performance and efficiency.
The steel cage maintains roller alignment, ensuring smooth operation and reduced wear.

21308 EW Bearing operates in temperatures from -30° to 200°C, suitable for various environments.
Its open design simplifies lubrication, making maintenance straightforward and cost-effective.

Application

Industrial Uses of 21308 EW Bearing
The 21308 EW Bearing is commonly used in heavy machinery like conveyor systems and crushers, where its double-row design handles both radial and axial loads efficiently.
Its chrome steel construction ensures durability in demanding environments, making it a reliable choice for industrial applications.

What Makes 21308 EW Bearing a Preferred Choice?
In automotive applications, 21308 EW Bearing supports components like gearboxes and differentials, thanks to its high load capacity and smooth operation.
The open design allows for easy lubrication, extending its service life even under continuous use.

Built for Heavy-Duty Use: 21308 EW Bearing
For wind turbines and mining equipment, 21308 EW Bearing excels due to its ability to withstand misalignment and heavy loads.
The spherical roller design ensures consistent performance, even in harsh operating conditions.

Automotive vs Aerospace: Applications of 21308 EW Bearing
In automotive systems, 21308 EW Bearing is ideal for transmissions and axles, where its combined load capacity is essential.
For aerospace applications, its high-speed capability and temperature resistance make it suitable for auxiliary systems.

Essential Roles of 21308 EW Bearing
In paper mills and steel plants, 21308 EW Bearing provides reliable performance under high temperatures and heavy loads.
The steel cage and chrome steel rollers ensure long-lasting operation, reducing maintenance downtime.

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