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21307 KJ Double Row Spherical Roller Bearing
21307 KJ Double Row Spherical Roller Bearing

21307 KJ Double Row Spherical Roller Bearing

The 21307 KJ is a double-row spherical roller bearing with a 35mm bore and 80mm outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 17805 lbf and operates smoothly at speeds up to 9500 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 combined loads are common.

Weighing 0.54kg, it offers a robust yet manageable size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 21307 KJ
  • Brand TFL
  • Interchangeable SKF
  • Size 35 x 80 x 21 mm
  • Bore Dia 35 mm
  • Bore Dia Tolerance +0.025mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 21 mm
  • Width Tolerance -0.06mm to 0
  • Shoulder Dia Of Inner Ring 47.2 mm
  • Shoulder/Recess Dia Of Outer Ring 65.6 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 17805 lbf
  • Static Radial Load 16186 lbf
  • Max Speed 9500 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 0.54 kg
  • Price (US$) 23.58

Features

Performance Features of 21307 KJ Bearing

21307 KJ Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 17805 lbf, ensuring reliable performance in demanding conditions.

The double-row spherical roller design allows for slight misalignment, reducing stress on the bearing.
With a maximum speed of 9500 rpm, it balances durability and efficiency in high-speed applications.

21307 KJ Bearing operates in temperatures from -30° to 200°C, making it suitable for varied environments.
The steel cage maintains roller alignment, extending service life and reducing maintenance needs.

Application

Industrial Uses of 21307 KJ Bearing
21307 KJ Bearing is commonly used in heavy machinery like conveyor systems and crushers, where its double-row design handles both radial and axial loads efficiently. The chrome steel construction ensures durability in demanding industrial environments.

What Makes 21307 KJ Bearing a Preferred Choice?
In automotive applications, 21307 KJ Bearing fits well in gearboxes and differentials, thanks to its tapered bore for secure mounting. Its high-speed capability up to 9500 rpm makes it suitable for performance vehicles.

Perfect Fit for Automation: 21307 KJ Bearing
For robotic arms and automated production lines, 21307 KJ Bearing offers smooth rotation and reliable load support. The open design simplifies lubrication, ensuring long service life in continuous operation.

Medical vs Industrial: Where 21307 KJ Bearing Excels
While 21307 KJ Bearing isn’t typically used in medical devices, it shines in industrial pumps and compressors. Its temperature range of -30° to 200°C suits harsh conditions like mining or steel plants.

Essential Roles of 21307 KJ Bearing
In wind turbines, 21307 KJ Bearing supports rotor shafts, handling variable loads and misalignment. The spherical roller design accommodates slight shaft deflections, reducing wear over time.

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