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21311 CJ Double Row Spherical Roller Bearing
21311 CJ Double Row Spherical Roller Bearing

21311 CJ Double Row Spherical Roller Bearing

The 21311 CJ 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 open design allows for easy lubrication, 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, making it a practical choice for replacements. Suitable for heavy-duty applications like industrial gearboxes or mining equipment where robust performance is needed.

Weighing 1.7kg, it offers a solid balance of strength and manageable size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 21311 CJ
  • Brand TFL
  • Interchangeable SKF
  • Size 55 x 120 x 29 mm
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.015mm 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 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 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$) 41.58

Features

Performance Features of 21311 CJ Bearing

21311 CJ 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.

21311 CJ 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 21311 CJ Bearing
21311 CJ Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row spherical design handles misalignment and heavy radial loads. The chrome steel construction ensures durability in demanding environments.

Where Is 21311 CJ Bearing Used?
You’ll often find 21311 CJ Bearing in conveyor systems and industrial fans, where its high dynamic load capacity keeps operations running smoothly. The open design allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 21311 CJ Bearing
21311 CJ Bearing excels in mining equipment, thanks to its ability to withstand combined loads and harsh conditions. The steel cage adds extra strength, making it a reliable choice for continuous operation.

Automotive vs Aerospace: Applications of 21311 CJ Bearing
In automotive applications, 21311 CJ Bearing supports gearboxes and drivetrains, while in aerospace, it’s used in auxiliary systems. Its high-temperature tolerance makes it versatile across industries.

Perfect Fit for Automation: 21311 CJ Bearing
21311 CJ Bearing is ideal for robotic arms and automated assembly lines, where precision and load capacity are key. The metric sizing ensures compatibility with a wide range of equipment.

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