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21311K CKJ Double Row Spherical Roller Bearing
21311K CKJ Double Row Spherical Roller Bearing

21311K CKJ Double Row Spherical Roller Bearing

The 21311K CKJ is a double-row spherical roller bearing with a 55mm bore and 120mm outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 35745 lbf and operates smoothly at speeds up to 7500 RPM.

Its tapered bore design ensures a secure fit, while the open structure allows for easy lubrication. The steel cage enhances durability, making it suitable for heavy-duty use.

This bearing works in temperatures from -30°C to 200°C, ideal for harsh environments. It’s interchangeable with SKF models, offering a reliable replacement option.

Weighing 1.7kg, it’s robust yet manageable for industrial applications like conveyor systems or mining equipment. Compliant with RoHS and REACH standards for safety and environmental care.

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Product Parameters

  • Part Number 21311K CKJ
  • Brand TFL
  • Interchangeable SKF
  • Size 55 x 120 x 29 mm
  • Bore Dia 55 mm
  • Bore Dia Tolerance +0.03mm to 0
  • Outer Dia 120 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 29 mm
  • Width Tolerance -0.06mm to 0
  • Shoulder Dia Of Inner Ring 72.7 mm
  • Shoulder/Recess Dia Of Outer Ring 96.2 mm
  • Width Of Lubrication Groove 6 mm
  • Diameter Of Lubrication Hole 3 mm
  • Chamfer Dimension min.2 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 35745 lbf
  • Static Radial Load 37318 lbf
  • Max Speed 7500 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 1.7 kg
  • Price (US$) 44.28

Features

Performance Features of 21311K CKJ Bearing

21311K CKJ Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 35745 lbf, ensuring reliable performance in heavy-duty applications.

The double-row spherical roller design allows for slight misalignment, reducing stress on the bearing.
With a maximum speed of 7500 rpm, it maintains efficiency even under demanding conditions.

21311K CKJ Bearing operates in temperatures from -30° to 200°C, suitable for various industrial environments.
The steel cage ensures proper roller alignment, enhancing durability and reducing maintenance needs.

Application

Industrial Uses of 21311K CKJ Bearing
The 21311K CKJ Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row spherical design handles misalignment and heavy radial loads. Its chrome steel construction ensures durability in harsh industrial environments.

In automotive applications, 21311K CKJ Bearing supports drivetrain components, providing reliable performance under combined loads. The taper bore design simplifies installation in vehicle axles and transmissions.

For mining equipment, 21311K CKJ Bearing’s high dynamic load capacity makes it suitable for conveyors and excavators. The lubrication groove design helps maintain smooth operation in dusty conditions.

What Makes 21311K CKJ Bearing a Preferred Choice?
The 21311K CKJ Bearing works well in paper mill machinery, where its spherical rollers compensate for shaft deflections. Its steel cage offers strength and longevity in high-speed operations.

In wind turbines, 21311K CKJ Bearing handles variable loads and misalignment caused by wind forces. The wide temperature range ensures performance in both hot and cold climates.

Built for Heavy-Duty Use: 21311K CKJ Bearing
The 21311K CKJ Bearing is ideal for construction equipment like cranes, where its high static load capacity supports heavy lifting. The open design allows for easy relubrication during maintenance.

In agricultural machinery, 21311K CKJ Bearing withstands shocks and vibrations in tractors and harvesters. The metric sizing ensures compatibility with European and Asian equipment standards.

Q&A

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