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21308 CCK Double Row Spherical Roller Bearing
21308 CCK Double Row Spherical Roller Bearing

21308 CCK Double Row Spherical Roller Bearing

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

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

This model is interchangeable with SKF bearings, offering a practical replacement option. It’s well-suited for heavy-duty applications like industrial gearboxes or mining equipment where combined loads are common.

Weighing 0.74kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 21308 CCK
  • 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$) 29.16

Features

Performance Features of 21308 CCK Bearing

21308 CCK 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 demanding conditions.
The double-row spherical roller design accommodates misalignment, enhancing operational stability.

How Is 21308 CCK Bearing Engineered for Reliability?

21308 CCK Bearing features a tapered bore design, simplifying installation and improving alignment accuracy.
The steel cage maintains roller positioning, reducing wear and extending service life.
With a maximum speed of 9500 rpm, it balances high-speed performance and durability.

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

21308 CCK Bearing operates in temperatures from -30° to 200°C, maintaining performance in extreme conditions.
The chrome steel construction resists wear, ensuring longevity even under heavy loads.
Its open design allows for easy lubrication, reducing maintenance requirements.

Designed for Durability: 21308 CCK Bearing

21308 CCK Bearing’s double-row spherical rollers distribute loads evenly, minimising stress on components.
The lubrication groove and holes ensure consistent oil flow, enhancing operational efficiency.
With a static radial load capacity of 24279 lbf, it delivers reliable performance in tough environments.

Flanged vs Non-Flanged: Benefits of 21308 CCK Bearing

21308 CCK Bearing’s tapered bore ensures secure mounting, reducing slippage during operation.
The spherical roller design compensates for shaft misalignment, improving overall system reliability.
Its wide temperature range makes it versatile for various industrial applications.

Application

Industrial Uses of 21308 CCK Bearing
21308 CCK Bearing is commonly used in heavy machinery like conveyors and crushers, where its double-row design handles both radial and axial loads effectively. The spherical roller construction also helps accommodate misalignment, reducing wear in demanding environments.

What Makes 21308 CCK Bearing a Preferred Choice?
In mining equipment, 21308 CCK Bearing’s high dynamic load capacity ensures reliable performance under extreme conditions. The chrome steel rollers and steel cage provide durability, even with frequent heavy loads.

Built for Heavy-Duty Use: 21308 CCK Bearing
For paper mill machinery, 21308 CCK Bearing’s taper bore design allows for secure mounting on shafts, preventing slippage during operation. Its wide temperature range makes it suitable for both hot and cold processing stages.

Automotive vs Aerospace: Applications of 21308 CCK Bearing
In truck wheel hubs, 21308 CCK Bearing offers stability under combined loads, while its high-speed capability suits helicopter rotor systems. The metric sizing ensures compatibility with global manufacturing standards.

Where Is 21308 CCK Bearing Used?
You’ll find 21308 CCK Bearing in wind turbines, where its self-aligning feature compensates for shaft deflection. The lubrication groove design also simplifies maintenance in hard-to-reach installations.

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