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21308 EKW Double Row Spherical Roller Bearing
21308 EKW Double Row Spherical Roller Bearing

21308 EKW Double Row Spherical Roller Bearing

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

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

This model is interchangeable with SKF bearings, offering a practical replacement option. Suitable for heavy-duty applications like industrial gearboxes or mining equipment where combined 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 EKW
  • Brand TFL
  • Interchangeable SKF
  • Size 40 x 90 x 23 mm
  • Bore Dia 40 mm
  • Bore Dia Tolerance +0.025mm 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 Taper 1:12
  • 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$) 34.73

Features

How Does 21308 EKW Bearing Handle Combined Loads?

21308 EKW Bearing features a double-row spherical roller design, ideal for handling both radial and axial loads.
Its chrome steel construction ensures strength and durability under high dynamic radial loads of 24055 lbf.
The tapered bore design allows for secure mounting, enhancing stability during operation.
With a maximum speed of 9500 rpm, it delivers reliable performance in demanding conditions.

What Makes 21308 EKW Bearing Suitable for High-Temperature Applications?

21308 EKW Bearing operates efficiently in temperatures ranging from -30° to 200 °C.
Its chrome steel rollers and rings maintain structural integrity even under thermal stress.
The open design facilitates easy lubrication, ensuring smooth performance in extreme conditions.
This makes it a dependable choice for industrial applications requiring high-temperature resistance.

Engineered for Precision: 21308 EKW Bearing

21308 EKW Bearing is designed with a spherical roller type for precise alignment under combined loads.
The steel cage ensures proper roller spacing, reducing friction and wear.
Its radial clearance of CN grade provides optimal performance for various applications.
With a static radial load capacity of 24279 lbf, it offers reliability in heavy-duty operations.

Steel vs Ceramic Bearings: Strengths of 21308 EKW Bearing

21308 EKW Bearing uses chrome steel for both rollers and rings, ensuring high load capacity and durability.
The steel cage provides robust support, maintaining roller alignment under stress.
This construction makes it more cost-effective than ceramic options while delivering reliable performance.
Its dynamic radial load rating of 24055 lbf highlights its strength in demanding environments.

Application

Industrial Uses of 21308 EKW Bearing
21308 EKW Bearing is commonly used in heavy machinery like conveyor systems and crushers, where its double-row design handles combined loads efficiently. The spherical roller construction helps accommodate misalignment, reducing wear in demanding environments.

Where Is 21308 EKW Bearing Used?
You’ll often find 21308 EKW Bearing in mining equipment, where its high dynamic radial load capacity ensures reliable performance. Its taper bore design also makes it easy to mount on shafts, saving time during installation.

Built for Heavy-Duty Use: 21308 EKW Bearing
21308 EKW Bearing excels in applications like gearboxes and industrial fans, thanks to its chrome steel rollers and steel cage. The wide temperature range (-30° to 200°C) makes it suitable for both hot and cold operating conditions.

Automotive vs Aerospace: Applications of 21308 EKW Bearing
In automotive systems, 21308 EKW Bearing supports components like differentials, offering durability under high stress. For aerospace, its precision and speed tolerance (up to 9500 rpm) make it a fit for auxiliary power units.

Essential Roles of 21308 EKW Bearing
21308 EKW Bearing is a go-to for paper mills and steel plants, where its robust construction handles harsh conditions. The lubrication groove design ensures smooth operation, even in high-load scenarios.

Q&A

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